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High power amplifier for 1296
1 KW SSPA for 1.8-54 MHz
A 1.5 KW LPF for 160-6m
1.8 to 54 MHz Dual Directional Detector
1.8 to 54 MHz combiner set
Automatic Transverter Interface
1 KW 6 Meter LDMOS Amplifier
2 Meter 80W All Mode Amplifier
1 KW 2M LDMOS Amplifier
1 KW 222 MHz LDMOS Amplifier
500w 70cm Amplifier
1KW 70cm LDMOS Amplifier
A Big Power Supply for SSPAs
Low Pass Filter/Dual Directional Detector
Sampling RF Power
LED Bar Graph Meter
Amplifier Control Board
LNAs (preamps) and MMICs
LNA Sequencing and Protection
Building UHF Antennas
VHF OCXO
MIcrowave Marker
Crystal Oven Controller
Microwave L.O.
Latching Relay Driver
12 to 28v
Relay Sequencer
High Current DC Switch
L & S Band LNA
Microwave L.O. Filters
PC Board Filters
Using Inexpensive Relays
600w 23cm LDMOS Amplifier
XRF-286 Amplifiers for 23cm
150W 23CM Turn-Key Amplifier
300w 23cm Amplifier
200w 23cm Amplifier
100w 23cm "brick"
100w 23cm Transverter
60w 23 cm Amplifier
23 CM Beacon
23cm Signal Generator
23cm Double Quad
23cm filters
13cm filter
13cm Signal Generator
13cm Transverter
120w 13 cm Amplifier
600w+ 33cm Amplifier
300w 33cm Amplifier
33cm filter
33 cm Crystal Source
33cm Signal Generator
9cm Transverter
Transverter Selector
12 AND 28 volts
Klitzing Amplifiers
IC-910H tweaks
Audio Files
Parts I Can Supply
Current Projects
Links

Comments? email to

Parts I Can Supply


 

Please read this section before ordering, there have been changes to International shipping methods, etc

Instructions on assembling and use of the kits listed here are contained in the articles on this site, as well as close-up component layout pictures to aid in assembly. Surface-mount parts are used throughout, so it is helpful to have some experience in working with them. There is a video here showing some of the techniques used in working with these components.

You can order any of the items listed here using the shopping cart provided, or by sending an email (see contact information on the card below). Payment can be made with your PayPal account (if you have one), or a credit card of your choice at checkout. Parts are usually sent by Priority Mail the next business day for domestic. Priority mail within the USA has been reliable with transit times from 1 to 3 days.

For all international orders

PayPal does have volume agreements with both DHL and UPS for international shipments, and this will help lower your shipping costs if I am able to use it; however I will be able to use it only if you place your order using the default PayPal system used on this page. First class and priority mail has been unreliable for international shipments and is no longer recommended as an option.   
 

To make navigation a little easier, I re-arranged this page so the major products are grouped into sections. Most of these sections also list accessories commonly used with those major items.

 


 

A 600 watt+ 33cm LDMOS amplifier (900 MHz band)


 

in stock

Fully assembled and tested RF deck mounted on a 3" x 5" x 0.5" copper heat spreader, ready to bolt down to your heat sink. Requires 6 to 7w drive (9w max drive) for 650-750w or more out, 50v at up to 25 amps VDD, 12v @ 30ma for bias. The technical article for this product is here

Assembled and tested, $745.00

Other components useful in assembling a complete amplifier system with this rf deck are listed in the column to the right ->

The Ultimate Amplifier Control Board

This photo is version 6.3 (current version 6.5 is the same functionally), designed for the highest powered amplifiers and mast-mounted LNA's, with the following functions and features:

  • On-board sequencer for control of antenna relays, amplifier bias and power supply feeds, and driver RF hold-off
  • High VSWR lockout that will accept either a negative or a positive trigger signal
  • High temperature lockout that will bypass an overheated amplifier until it cools down to a safe temperature
  • Temperature-sensitive fan control for normal cooling
  • Driver RF blocking during antenna relay changeovers
  • Internal regulator, which allows operation from power sources ranging from 12v to 50v
  • LED indicator feeds for power, transmit, SWR lock and High Temperature lock
  • Can be used as a controller for a mast-mounted LNA

A description of all connections into and out of the board is located here: v63control.htm

The temperature sensor, optional voltage reducer and indicator LEDs are supplied; the user must supply the vswr detector and the fan if those functions are to be used.

Assembled and tested, $85  


High Current DC FET Switch

12v and 28v models can switch up to 35 amps, 50v or 65v models more than 45 amps

 

The photo shows Rev 3, an upgrade to the FET switch shown in the technical article; rev 4 is the currently shipping model which has an extra disable pad and includes the aluminum oxide ceramic insulator upgrade which is shipping with all switches beginning Sept. (2019)

 


 

Assembled and tested, low range, 13.5v (10-18v)   $24

Assembled and tested, mid range, 28v (18-35v)   $24

Assembled and tested, high range, 50v (35-55v)   $24

Assembled and tested, highest voltage range, for 65v systems (55-75v)   $27


 

Dual Microwave RF detector (38mm by 50mm)


Designed to be used with directional couplers lacking their own detectors. An explanation for the use of this board is explained in the Sampling RF Power article. By changing the values of the input attenuators, and the mounting positions of the diodes, the board can be configured for different power levels and output polarities. An assembly guide for the kit is here.

Complete kit, $20


LNAs (preamps) and MMICs

assembled/tested VHF/UHF LNA, 0.5 to 0.6 NF as shown above, $25

blank pc board only, $4


LED Bar Graph Display

The current version changes R22 to a trimmer resistor, allowing the input sensitivity to be adjustable from less than 500mv to more than 15v.

Assembled/tested with red display $27.00  

Assembled/tested with green display $27.00  

Assembled/tested with yellow display $27.00  

Assembled/tested with dual color, 7 green 3 red $27.00  

 

 

  A 600 watt 23cm LDMOS amplifier (1296MHz band)


 

in stock

Fully assembled and tested RF deck mounted on a 3" x 5" x 0.5" copper heat spreader, ready to bolt down to your heat sink. Requires 7 to 10w drive (15w max drive) for 600w or more out, 50v at up to 25 amps VDD, 12v @ 30ma for bias.

Assembled and tested, $710.00


Please read the kit assembly instructions before deciding to purchase the kit instead of the assembled/tested RF deck

in stock

600w 23cm RF deck basic kit, $145  

This kit includes the PCB. You will also need the copper heat spreader (available on the right) and the MRF13750 LDMOS to duplicate the complete RF deck listed above this kit

in stock

Blank board only for the 600w 23cm amplifier, $45  

NXP MRF13750H LDMOS, $225.00    


 

 

3 x 5 x 1/2" copper heat spreader, fully machined for the 600w 23cm rf deck $115.00  


 

Here is a video showing how to flow-solder your LDMOS to the spreader.

If you do not wish to do the flow-soldering procedure yourself, this service is available at the time you order your NXP MRF13750H with a copper spreader. Just add this service to your shopping cart.

LDMOS flow-solder attachment service, $20.00  

The Ultimate Amplifier Control Board

This photo is version 6.3 (current version 6.5 is the same functionally), designed for the highest powered amplifiers and mast-mounted LNA's, with the following functions and features:

  • On-board sequencer for control of antenna relays, amplifier bias and power supply feeds, and driver RF hold-off
  • High VSWR lockout that will accept either a negative or a positive trigger signal
  • High temperature lockout that will bypass an overheated amplifier until it cools down to a safe temperature
  • Temperature-sensitive fan control for normal cooling
  • Driver RF blocking during antenna relay changeovers
  • Internal regulator, which allows operation from power sources ranging from 12v to 50v
  • LED indicator feeds for power, transmit, SWR lock and High Temperature lock
  • Can be used as a controller for a mast-mounted LNA

A description of all connections into and out of the board is located here: v63control.htm

The temperature sensor, optional voltage reducer and indicator LEDs are supplied; the user must supply the vswr detector and the fan if those functions are to be used.

Assembled and tested, $85  

 

High Current DC FET Switch

12v and 28v models can switch up to 35 amps, 50v or 65v models more than 45 amps

 

The photo shows Rev 3, an upgrade to the FET switch shown in the technical article; rev 4 is the currently shipping model which has an extra disable pad and includes the aluminum oxide ceramic insulator upgrade which is shipping with all switches beginning Sept. (2019)

 


 

Assembled and tested, low range, 13.5v (10-18v)   $24

Assembled and tested, mid range, 28v (18-35v)   $24

Assembled and tested, high range, 50v (35-55v)   $24

Assembled and tested, highest voltage range, for 65v systems (55-75v)   $27

 

LED Bar Graph Display

The current version changes R22 to a trimmer resistor, allowing the input sensitivity to be adjustable from less than 500mv to more than 15v.

Assembled/tested with red display $27.00  

Assembled/tested with green display $27.00  

Assembled/tested with yellow display $27.00  

Assembled/tested with dual color, 7 green 3 red $27.00  

 

 

Dual Microwave RF detector (38mm by 50mm)


Designed to be used with directional couplers lacking their own detectors. An explanation for the use of this board is explained in the Sampling RF Power article. By changing the values of the input attenuators, and the mounting positions of the diodes, the board can be configured for different power levels and output polarities. An assembly guide for the kit is here.

Complete kit, $20

 

LNAs (preamps) and MMICs

assembled/tested VHF/UHF LNA, 0.5 to 0.6 NF as shown above, $25

blank pc board only, $4

 

 

23cm High-Power Coupler (Ro4003C)

This coupler is for those of us combining the outputs of larger amplifiers, even the bigger XRF-286, 2C39, or GS-15B high-power amplifiers. Made from thick (.060) Rogers R04003 low-loss substrate, it will handle more than 500W at the output. Requires a termination for the isolated port (like the 150w termination offered below).

This link demonstrates a layout for combining 4 amplifiers (the layout method is the same as the 13cm couplers shown)

23cm High Power Coupler $25.00

 

Anaren or ATC 150w Termination (DC - 2.5 GHz), $18

Data sheet

 

1.8 to 54 MHz (160 through 6 meters)

 

1 KW SSPA for 1.8 to 54 MHz

This RF deck began shipping in December 2016; it was developed on .078 thick FR4, and incorporates all the changes made to the original one done on TC350

(see the new kit assembly instructions here)

The original assembly guide for this product is here

1.8-54 MHz Kilowatt RF Deck, Complete using the BLF188xr


 

Fully assembled and tested RF deck mounted on a 4" x 6.5" x .375" copper heat spreader, ready to bolt down to your heat sink. Requires 2 to 4w drive for 1kw out, 50v at up to 35 amps VDD, 12v @ 30ma for bias. (the reference technical article is here).

Assembled and tested as shown $863.00

Note: The BLF188 will be discontinued in early 2023; the RF deck using the MRF1K50 listed below is the recommended replacement.

1.8-54 MHz Kilowatt RF Deck, Complete using the MRF1K50H

Fully assembled and tested RF deck using the MRF1K50H, mounted on a 4" x 6.5" x .375" copper heat spreader, ready to bolt down to your heat sink. Requires 3 to 5w drive for 1kw+ out, 50v at up to 40 amps VDD, 12v @ 30ma for bias.

The MRF1K50N is pictured here with its blue PC boards; this device is no longer supplied in the completed RF decks.

the MRF1K50H (ceramic version) is supplied with green boards; specs are the same as the 1K50N.

This module wll deliver about 150w more than the one using the BLF188xr.

Assembled and tested as shown $863.00

Assembly guide is here


 

Basic kit (pc board included) with all parts except LDMOS and copper spreader, $195

4 x 6.5 x 3/8" copper heat spreader, fully machined $125.00  
 

NXP MRF1K50H LDMOS, $199.00  


 

Here is the original video showing how to flow-solder your LDMOS to the spreader

Complete copper heat spreader assembly with NXP MRF1K50H LDMOS already installed using flow-solder process: $344.00  
 

Blank PC board only (for the MRF1K50H), $40.00  

Blank PC board only (for the MRF1K50N), $30.00  


 

Additional items useful for building a complete amplifier system are listed in this column


1.5 KW Low Pass Filter Board for 1.8 to 54 MHz

Generation 2 filter (a description for this version is here); This version is rated for 2kw+


Unassembled 6-range filter kit, allowing multiple configurations for constructing an LPF for either single or dual-pallet LDMOS amplifiers of any type. $375

The assembly instructions and Bill of Materials for the generation 2 kit is here

Completed board (gen 2) for a single-pallet (1kw) amplifier, assembled, tested and tuned on a network analyzer $475

Completed board (gen 2) for a double-pallet (2kw+) amplifier, assembled, tested and tuned on a network analyzer $480

Blank PC board only, .094 FR4 $45.00


1.8-54 MHz Dual Directional Detector

This is 3rd revision with the following enhancements:

  • A sample port (-50dbc) has been added for forward power signal monitoring, or for use with adaptive feedback radios (Apache Labs Puresignal)
  • Output from the detectors can now be configured as either positive or negative
  • Parts for configuring as a band switch safety sensor are now included in the kit

Unassembled kit $40

Completed board as shown, assembled/tested/ optimized on a scalar anayzer, negative output (standard) $80

Assembled/tested board configured as a band select safety sensor, optimized on a scalar anayzer $80

blank PC board only $12

The assembly guide for this product is here


ALC Detector (26mm by 38mm)

Used at the input of an amplifier to provide an Automatic Level Control signal back to the driving radio. The adjustment trimmer can also be mounted to the back side of the PCB for panel mounting (with access hole for adjustment).

Assembled/tested with control mounted to component side $20

Assembled/tested with trimmer mounted to foil side (for panel mount with access hole) $20

 


High Current DC FET Switch

12v and 28v models can switch up to 35 amps, 50v or 65v models more than 45 amps

 

The photo shows Rev 3, an upgrade to the FET switch shown in the technical article; rev 4 is the currently shipping model which has an extra disable pad and includes the aluminum oxide ceramic insulator upgrade which is shipping with all switches beginning Sept. (2019)

 


 

Assembled and tested, low range, 13.5v (10-18v)   $24

Assembled and tested, mid range, 28v (18-35v)   $24

Assembled and tested, high range, 50v (35-55v)   $24

Assembled and tested, highest voltage range, for 65v systems (55-75v)   $27


The Ultimate Amplifier Control Board

This photo is version 6.3 (current version 6.5 is the same functionally), designed for the highest powered amplifiers and mast-mounted LNA's, with the following functions and features:

  • On-board sequencer for control of antenna relays, amplifier bias and power supply feeds, and driver RF hold-off
  • High VSWR lockout that will accept either a negative or a positive trigger signal
  • High temperature lockout that will bypass an overheated amplifier until it cools down to a safe temperature
  • Temperature-sensitive fan control for normal cooling
  • Driver RF blocking during antenna relay changeovers
  • Internal regulator, which allows operation from power sources ranging from 12v to 50v
  • LED indicator feeds for power, transmit, SWR lock and High Temperature lock
  • Can be used as a controller for a mast-mounted LNA

A description of all connections into and out of the board is located here: v63control.htm

The temperature sensor, optional voltage reducer and indicator LEDs are supplied; the user must supply the vswr detector and the fan if those functions are to be used.

Assembled and tested, $85  


LED Bar Graph Display

The current version changes R22 to a trimmer resistor, allowing the input sensitivity to be adjustable from less than 500mv to more than 15v.

Assembled/tested with red display $27.00  

Assembled/tested with green display $27.00  

Assembled/tested with yellow display $27.00  

Assembled/tested with dual color, 7 green 3 red $27.00  

 


 


DC through UHF input Relay board

(please see the technical article here)

 

12v relay PCB as shown with medium power DPDT relay, 8A contacts $20


High Power Output Relay Board

.094 FR4, DC through 222MHz, up to 1.5kw through 2m, 1kw through 222MHz

 

12v high power relay PCB as shown with SPDT relay, 16A contacts $20

12v high power relay PCB with 2 meter/222MHz  compensation capacitor installed, 16A contacts $22


1.8 to 54 MHz Couplers

(for combining amplifiers)

1.8 to 54 MHz 2kw coupler, assembled $76.00

1.8 to 54 MHz input coupler, assembled $47.00

100 ohm 500 watt flange-mount resistor $51.00

 


 

6 meters (50-54 MHz)


 

6 Meter (single-band optimized) 1KW+ RF deck using the MRF1K50N, 1200w max

  $838.00 

Additional items useful for making a complete amplifier system for the 6m RF deck are listed in the 2 meter section (next).


 

2 meters (144-148 MHz)


 


 2 Meter Kilowatt RF Deck, Complete

Fully assembled and tested RF deck mounted on a 3" x 5" x 1/2" copper heat spreader, ready to bolt down to your heat sink. This is the newest RF deck design using coaxial matching capacitors in the critical spots, with DC power feeds directly to the drain connections on the LDMOS device; and the adjustable bias circuit is regulated and temperature compensated.

1kw output minimum, typical output at saturation is 1100 to 1200w. Requires aprox. 2w drive for 1kw out, 50v @ 30a VDD, 12v @ 30ma for bias.

Assembled and tested as shown $722.00

Complete kit for building the RF deck, supplied with machined copper spreader with Ampleon ART1K6 LDMOS attached, $501.00  


Basic kit (includes PC board), without copper spreader or LDMOS, $157.00  

3 x 5 x 1/2" copper heat spreader, fully machined $125.00  


 

NXP/Ampleon BLF188XR LDMOS, $215.00  

The BLF188 will be discontinued in 2023, but I have a good supply of them in stock.
 

Ampleon ART1K6 LDMOS, $215.00 

 
 

Here is a video showing how to flow-solder your LDMOS to the spreader.

If you do not wish to do the flow-soldering procedure yourself, add this attachment service at the time you order your LDMOS with a copper spreader. The complete kits already include this service.

LDMOS flow-solder attachment service, $20.00  


PC board only, $47.00  

Additional items useful for building complete amplifier systems are listed in this column


VHF/UHF Low Pass Filter and Dual Directional Detector board (for use with kilowatt 50, 70, 144, 222 or 432 MHz amplifiers)

The technical article is here: This is a useful reference for assembling the kit versions.

Note: The default configuration for assembled/tested boards is for the detector diodes to be mounted to produce negative output signals. If you will be ordering the assembled/tested version of this product and prefer the output signals to be positive, be certain to send me an email when you place your order indicating that preference (contact info at the top of this page). Please read the end of the technical article for additional info.

Blank board only (.060 Teflon) $45.00

Complete kit as shown for 50 MHz $75.00

Complete kit as shown for 70 MHz (4M) $75.00

Complete kit as shown for 144 MHz $75.00

Complete kit as shown for 222 MHz $75.00

Complete kit as shown for 70cm $60.00

Assembly and network analyzer tuning/testing service of any filter/detector kit $40.00


For 2m amplifiers capable of producing 1500w or more - a very high power version of the 2m filter/detector using Teflon coaxial capacitors, capable of 2000w+, assembled/tested/tuned
$135.00


For 222MHz amplifiers capable of producing 1500w or more - a very high power version of the 222MHz filter/detector using Teflon coaxial capacitors, capable of 2000w+, assembled/tested/tuned
$135.00

 


The Ultimate Amplifier Control Board

This photo is version 6.3 (current version 6.5 is the same functionally), designed for the highest powered amplifiers and mast-mounted LNA's, with the following functions and features:

  • On-board sequencer for control of antenna relays, amplifier bias and power supply feeds, and driver RF hold-off
  • High VSWR lockout that will accept either a negative or a positive trigger signal
  • High temperature lockout that will bypass an overheated amplifier until it cools down to a safe temperature
  • Temperature-sensitive fan control for normal cooling
  • Driver RF blocking during antenna relay changeovers
  • Internal regulator, which allows operation from power sources ranging from 12v to 50v
  • LED indicator feeds for power, transmit, SWR lock and High Temperature lock
  • Can be used as a controller for a mast-mounted LNA

A description of all connections into and out of the board is located here: v63control.htm

The temperature sensor, optional voltage reducer and indicator LEDs are supplied; the user must supply the vswr detector and the fan if those functions are to be used.

Assembled and tested, $85  


High Current DC FET Switch

12v and 28v models can switch up to 35 amps, 50v or 65v models more than 45 amps

 

The photo shows Rev 3, an upgrade to the FET switch shown in the technical article; rev 4 is the currently shipping model which has an extra disable pad and includes the aluminum oxide ceramic insulator upgrade which is shipping with all switches beginning Sept. (2019)

 


 

Assembled and tested, low range, 13.5v (10-18v)   $24

Assembled and tested, mid range, 28v (18-35v)   $24

Assembled and tested, high range, 50v (35-55v)   $24

Assembled and tested, highest voltage range, for 65v systems (55-75v)   $27


ALC Detector (26mm by 38mm)

Used at the input of an amplifier to provide an Automatic Level Control signal back to the driving radio. The adjustment trimmer can also be mounted to the back side of the PCB for panel mounting (with access hole for adjustment).

Assembled/tested with control mounted to component side $20

Assembled/tested with trimmer mounted to foil side (for panel mount with access hole) $20


 


LED Bar Graph Display

The current version changes R22 to a trimmer resistor, allowing the input sensitivity to be adjustable from less than 500mv to more than 15v.

Assembled/tested with red display $27.00  

Assembled/tested with green display $27.00  

Assembled/tested with yellow display $27.00  

Assembled/tested with dual color, 7 green 3 red $27.00  


 


DC through UHF input Relay board

(please see the technical article here)

 

12v relay PCB as shown with medium power DPDT relay, 8A contacts $20


High Power Output Relay Board

.094 FR4, DC through 222MHz, up to 1.5kw through 2m, 1kw through 222MHz

 

12v high power relay PCB as shown with SPDT relay, 16A contacts $20

12v high power relay PCB with 2 meter/222MHz  compensation capacitor installed, 16A contacts $22


HF, VHF and UHF input attenuators for LDMOS amplifiers

Reactance compensated for input VSWR less than 1.1 to1 across the entire band. Other values not shown below are available on request.

HF through 6 meter bands, 3db/100w, assembled and tested - $35.00

HF through 6 meter bands, 6db/90w, assembled and tested - $35.00

HF through 6 meter bands 10db/100w, assembled and tested - $35.00

HF through 6 meter bands, 13db/50w, assembled and tested - $35.00

HF through 6 meter bands, 13db/100w, assembled and tested - $47.00

HF through 6 meter bands, 16db/100w, assembled and tested - $47.00

2 meter band, 3db/100w, assembled and tested  - $35.00

2 meter band, 6db/90w, assembled and tested  - $35.00

2 meter band, 10db/100w, assembled and tested  - $35.00

2 meter band, 13db/50w, assembled and tested  - $35.00

2 meter band, 13db/100w, assembled and tested  - $47.00

2 meter band, 16db/100w, assembled and tested  - $47.00

220 MHz band, 3db/100w, assembled and tested - $35.00

220 MHz band, 6db/90w, assembled and tested - $35.00

70cm band, 3db/100w, assembled and tested - $35.00

70cm band, 6db/90w, assembled and tested $35.00

70cm band, 10db/100w, assembled and tested $35.00


LNAs (preamps) and MMICs

assembled/tested VHF/UHF LNA, 0.5 to 0.6 NF as shown above, $25

blank pc board only, $4

 


 

222 MHz

222MHz Kilowatt RF Deck, Complete

Fully assembled and tested RF deck mounted on a 3" x 5" x 1/2" copper heat spreader, ready to bolt down to your heat sink. 1kw output minimum; typical output at saturation is 1100 to 1200w. Requires 4 to 5w drive for 1kw out, 50v @ 30a VDD, 12v @ 30ma for bias. (the reference technical article is here).

Assembled and tested as shown $721.00


222MHz Kilowatt RF Deck Kit

This kit provides all parts necessary to build the 222MHz Kilowatt amplifier RF deck, and will work with the Freescale MRFE6VP1K25H, the NXP BLF578XR the BLF188XR LDMOS or the newer ART1K6 devices. The board included in the kit has all the latest improvements (temperature compensated bias circuit, separate DC drain feeds to reduce transformer heating, and ruggedized coaxial output matching capacitors). The reference technical article is here).

Complete kit for building the RF deck shown, supplied with machined copper spreader and NXP ART1K6 LDMOS, $501.00  

Or if you prefer, you can mix and match the various components below:

Basic kit (includes PC board), without copper spreader or LDMOS , $157.00  

3 x 5 x 1/2" copper heat spreader, fully machined $125.00  
 

NXP/Ampleon BLF188XR LDMOS, $215.00  

The BLF188 will be discontinued in 2023, but I have a good supply of them in stock.
 

Ampleon ART1K6 LDMOS, $215.00 

 
 


 

PC board only, $47.00  

Here is a video showing how to flow-solder your LDMOS to the spreader.

If you do not wish to do the flow-soldering procedure yourself, add this attachment service at the time you order your LDMOS with a copper spreader. The complete kits already include this service.

LDMOS flow-solder attachment service, $20.00  


 

 

Additional items useful for building complete amplifier systems are listed in this column


VHF/UHF Low Pass Filter and Dual Directional Detector board (for use with kilowatt 50, 70, 144, 222 or 432 MHz amplifiers)

The technical article is here: This is a useful reference for assembling the kit versions.

Note: The default configuration for assembled/tested boards is for the detector diodes to be mounted to produce negative output signals. If you will be ordering the assembled/tested version of this product and prefer the output signals to be positive, be certain to send me an email when you place your order indicating that preference (contact info at the top of this page). Please read the end of the technical article for additional info.

Blank board only (.060 Teflon) $45.00

Complete kit as shown for 50 MHz $75.00

Complete kit as shown for 70 MHz (4M) $75.00

Complete kit as shown for 144 MHz $75.00

Complete kit as shown for 222 MHz $75.00

Complete kit as shown for 70cm $60.00

Assembly and network analyzer tuning/testing service of any filter/detector kit $40.00


For 2m amplifiers capable of producing 1500w or more - a very high power version of the 2m filter/detector using Teflon coaxial capacitors, capable of 2000w+, assembled/tested/tuned
$135.00


For 222MHz amplifiers capable of producing 1500w or more - a very high power version of the 222MHz filter/detector using Teflon coaxial capacitors, capable of 2000w+, assembled/tested/tuned
$135.00


The Ultimate Amplifier Control Board

This photo is version 6.3 (current version 6.5 is the same functionally), designed for the highest powered amplifiers and mast-mounted LNA's, with the following functions and features:

  • On-board sequencer for control of antenna relays, amplifier bias and power supply feeds, and driver RF hold-off
  • High VSWR lockout that will accept either a negative or a positive trigger signal
  • High temperature lockout that will bypass an overheated amplifier until it cools down to a safe temperature
  • Temperature-sensitive fan control for normal cooling
  • Driver RF blocking during antenna relay changeovers
  • Internal regulator, which allows operation from power sources ranging from 12v to 50v
  • LED indicator feeds for power, transmit, SWR lock and High Temperature lock
  • Can be used as a controller for a mast-mounted LNA

A description of all connections into and out of the board is located here: v63control.htm

The temperature sensor, optional voltage reducer and indicator LEDs are supplied; the user must supply the vswr detector and the fan if those functions are to be used.

Assembled and tested, $85  


High Current DC FET Switch

12v and 28v models can switch up to 35 amps, 50v or 65v models more than 45 amps

 

The photo shows Rev 3, an upgrade to the FET switch shown in the technical article; rev 4 is the currently shipping model which has an extra disable pad and includes the aluminum oxide ceramic insulator upgrade which is shipping with all switches beginning Sept. (2019)

 


 

Assembled and tested, low range, 13.5v (10-18v)   $24

Assembled and tested, mid range, 28v (18-35v)   $24

Assembled and tested, high range, 50v (35-55v)   $24

Assembled and tested, highest voltage range, for 65v systems (55-75v)   $27


ALC Detector (26mm by 38mm)

Used at the input of an amplifier to provide an Automatic Level Control signal back to the driving radio. The adjustment trimmer can also be mounted to the back side of the PCB for panel mounting (with access hole for adjustment).

Assembled/tested with control mounted to component side $20

Assembled/tested with trimmer mounted to foil side (for panel mount with access hole) $20


 


LED Bar Graph Display

The current version changes R22 to a trimmer resistor, allowing the input sensitivity to be adjustable from less than 500mv to more than 15v.

Assembled/tested with red display $27.00  

Assembled/tested with green display $27.00  

Assembled/tested with yellow display $27.00  

Assembled/tested with dual color, 7 green 3 red $27.00  


 


DC through UHF input Relay board

(please see the technical article here)

 

12v relay PCB as shown with medium power DPDT relay, 8A contacts $20


High Power Output Relay Board

.094 FR4, DC through 222MHz, up to 1.5kw through 2m, 1kw through 222MHz

 

12v high power relay PCB as shown with SPDT relay, 16A contacts $20

12v high power relay PCB with 2 meter/222MHz  compensation capacitor installed, 16A contacts $22


HF, VHF and UHF input attenuators for LDMOS amplifiers

Reactance compensated for input VSWR less than 1.1 to1 across the entire band. Other values not shown below are available on request.

HF through 6 meter bands, 3db/100w, assembled and tested - $35.00

HF through 6 meter bands, 6db/90w, assembled and tested - $35.00

HF through 6 meter bands 10db/100w, assembled and tested - $35.00

HF through 6 meter bands, 13db/50w, assembled and tested - $35.00

HF through 6 meter bands, 13db/100w, assembled and tested - $47.00

HF through 6 meter bands, 16db/100w, assembled and tested - $47.00

2 meter band, 3db/100w, assembled and tested  - $35.00

2 meter band, 6db/90w, assembled and tested  - $35.00

2 meter band, 10db/100w, assembled and tested  - $35.00

2 meter band, 13db/50w, assembled and tested  - $35.00

2 meter band, 13db/100w, assembled and tested  - $47.00

2 meter band, 16db/100w, assembled and tested  - $47.00

220 MHz band, 3db/100w, assembled and tested - $35.00

220 MHz band, 6db/90w, assembled and tested - $35.00

70cm band, 3db/100w, assembled and tested - $35.00

70cm band, 6db/90w, assembled and tested $35.00

70cm band, 10db/100w, assembled and tested $35.00


LNAs (preamps) and MMICs

assembled/tested VHF/UHF LNA, 0.5 to 0.6 NF as shown above, $25

blank pc board only, $4

 


 

70 cm (420-450MHz)

 

500 watt 70cm RF decks and sub-assemblies

For the NXP ART700 or BLF184xr LDMOS

7 to 8w in for 500w out

click here to view the assembly guide for this product

blank board only (TC-350 substrate, 2oz copper, plated in immersion gold) - $47  


Basic 500W amplifier kit for the NXP ART700 or BLF184xr LDMOS transistor (does not include the LDMOS transistor) - $132  


3 x 5 x 1/2" copper heat spreader fully machined for the NXP ART700, $115.00  
 


Ampleon ART700 LDMOS, $199.00 

 
 


Here is a video showing how to flow-solder your LDMOS to the spreader.

If you do not wish to do the flow-soldering procedure yourself, this service is available at the time you order your LDMOS with a copper spreader. Just add this service to your shopping cart.

LDMOS flow-solder attachment service, $20.00  


 

Assembled and tested RF deck using NXP ART700 LDMOS transistor, as shown above - $757  


VHF/UHF Low Pass Filter and Dual Directional Detector board (for use with kilowatt 50, 70, 144, 222 or 432 MHz amplifiers)

The technical article is here: This is a useful reference for assembling the kit versions.

Note: The default configuration for assembled/tested boards is for the detector diodes to be mounted to produce negative output signals. If you will be ordering the assembled/tested version of this product and prefer the output signals to be positive, be certain to send me an email when you place your order indicating that preference (contact info at the top of this page). Please read the end of the technical article for additional info.

Blank board only (.060 Teflon) $45.00

Complete kit as shown for 50 MHz $75.00

Complete kit as shown for 70 MHz (4M) $75.00

Complete kit as shown for 144 MHz $75.00

Complete kit as shown for 222 MHz $75.00

Complete kit as shown for 70cm $60.00

Assembly and network analyzer tuning/testing service of any filter/detector kit $40.00


For 2m amplifiers capable of producing 1500w or more - a very high power version of the 2m filter/detector using Teflon coaxial capacitors, capable of 2000w+, assembled/tested/tuned
$135.00


For 222MHz amplifiers capable of producing 1500w or more - a very high power version of the 222MHz filter/detector using Teflon coaxial capacitors, capable of 2000w+, assembled/tested/tuned
$135.00


The Ultimate Amplifier Control Board

This photo is version 6.3 (current version 6.5 is the same functionally), designed for the highest powered amplifiers and mast-mounted LNA's, with the following functions and features:

  • On-board sequencer for control of antenna relays, amplifier bias and power supply feeds, and driver RF hold-off
  • High VSWR lockout that will accept either a negative or a positive trigger signal
  • High temperature lockout that will bypass an overheated amplifier until it cools down to a safe temperature
  • Temperature-sensitive fan control for normal cooling
  • Driver RF blocking during antenna relay changeovers
  • Internal regulator, which allows operation from power sources ranging from 12v to 50v
  • LED indicator feeds for power, transmit, SWR lock and High Temperature lock
  • Can be used as a controller for a mast-mounted LNA

A description of all connections into and out of the board is located here: v63control.htm

The temperature sensor, optional voltage reducer and indicator LEDs are supplied; the user must supply the vswr detector and the fan if those functions are to be used.

Assembled and tested, $85  


High Current DC FET Switch

12v and 28v models can switch up to 35 amps, 50v or 65v models more than 45 amps

 

The photo shows Rev 3, an upgrade to the FET switch shown in the technical article; rev 4 is the currently shipping model which has an extra disable pad and includes the aluminum oxide ceramic insulator upgrade which is shipping with all switches beginning Sept. (2019)

 


 

Assembled and tested, low range, 13.5v (10-18v)   $24

Assembled and tested, mid range, 28v (18-35v)   $24

Assembled and tested, high range, 50v (35-55v)   $24

Assembled and tested, highest voltage range, for 65v systems (55-75v)   $27


ALC Detector (26mm by 38mm)

Used at the input of an amplifier to provide an Automatic Level Control signal back to the driving radio. The adjustment trimmer can also be mounted to the back side of the PCB for panel mounting (with access hole for adjustment).

Assembled/tested with control mounted to component side $20

Assembled/tested with trimmer mounted to foil side (for panel mount with access hole) $20


 


LED Bar Graph Display

The current version changes R22 to a trimmer resistor, allowing the input sensitivity to be adjustable from less than 500mv to more than 15v.

Assembled/tested with red display $27.00  

Assembled/tested with green display $27.00  

Assembled/tested with yellow display $27.00  

Assembled/tested with dual color, 7 green 3 red $27.00  

 


 


HF, VHF and UHF input attenuators for LDMOS amplifiers

Reactance compensated for input VSWR less than 1.1 to1 across the entire band. Other values not shown below are available on request.

HF through 6 meter bands, 3db/100w, assembled and tested - $35.00

HF through 6 meter bands, 6db/90w, assembled and tested - $35.00

HF through 6 meter bands 10db/100w, assembled and tested - $35.00

HF through 6 meter bands, 13db/50w, assembled and tested - $35.00

HF through 6 meter bands, 13db/100w, assembled and tested - $47.00

HF through 6 meter bands, 16db/100w, assembled and tested - $47.00

2 meter band, 3db/100w, assembled and tested  - $35.00

2 meter band, 6db/90w, assembled and tested  - $35.00

2 meter band, 10db/100w, assembled and tested  - $35.00

2 meter band, 13db/50w, assembled and tested  - $35.00

2 meter band, 13db/100w, assembled and tested  - $47.00

2 meter band, 16db/100w, assembled and tested  - $47.00

220 MHz band, 3db/100w, assembled and tested - $35.00

220 MHz band, 6db/90w, assembled and tested - $35.00

70cm band, 3db/100w, assembled and tested - $35.00

70cm band, 6db/90w, assembled and tested $35.00

70cm band, 10db/100w, assembled and tested $35.00


LNAs (preamps) and MMICs

assembled/tested VHF/UHF LNA, 0.5 to 0.6 NF as shown above, $25

blank pc board only, $4


 
Multipurpose Items

LDMOS transistors

 

NXP/Ampleon BLF188XR LDMOS, $215.00  

The BLF188 will be discontinued in 2023, but I have a good supply of them in stock.
 

Ampleon ART1K6 LDMOS, $215.00 

 
 

NXP MRF1K50H LDMOS, $199.00  


 

Ampleon ART700 LDMOS, $199.00 

 
 

NXP MRF13750H LDMOS, $225.00    

 

 

 

 

 


Automatic (remote-controllable) solid-state transverter interface and selector

(click link above for technical article)

Assembled and tested board $115

Blank PC board only $16

 

 

Dual Microwave RF detector (38mm by 50mm)


Designed to be used with directional couplers lacking their own detectors. An explanation for the use of this board is explained in the Sampling RF Power article. By changing the values of the input attenuators, and the mounting positions of the diodes, the board can be configured for different power levels and output polarities. An assembly guide for the kit is here.

Complete kit, $20

 

Latching Relay Driver


 Assembled and tested, positive pulses, $20

 Assembled and tested, negative pulses, $20

Bias T for operating a remote LNA (preamp)

 

This board was designed to work with the IC-9700 on the low power side (up to 50w); the 9700 has the ability to enable a remote LNA by sending 12v down the coax to operate the LNA and its bypass relays; there are some other radios which can do the same (IC910H) and perhaps a few more I don't have experience with.

One of the shortcomings of the 12v supply is the 200 ma current limitation of the IC9700, but the bias T can "amplify" that current to a few amps if that much is needed (the technical write-up on its use is here)

The two versions of the board (for 144 through 432 and for 1296) are loaded and ready to put into your own enclosure with connectors of your choice. The pcb is small, just 1 x 2 inches (144-432 MHz version shown).

Assembled bias T board, 144 through 432 MHz $22

Assembled bias T board, 1296 MHz $22

4-event sequencer

 

Assembled and tested $37.50

LNAs (preamps) and MMICs

assembled/tested VHF/UHF LNA, 0.5 to 0.6 NF as shown above, $25

blank pc board only, $4

 

13 cm High Power Coupler (Ro4003c)

For combining the outputs of two amplifiers (or more), and capable of power levels in excess of 500w. Rogers 4003c substrate, commercially manufactured. Designed for a frequency range of 2280 to 2500 MHz, and measures aprox. 1.5 inches square. V11a specs are identical to the previous version shown in the photos in the links below.

This link shows how to connect the coupler

This link shows coupling response

This link shows return loss response

This link shows isolation response

This link demonstrates a layout for combining 4 amplifiers

13 cm Coupler as shown, $25.00

Mosfet Module Amplifier Board Kit  - for any of the Mitsubishi RF modules in the H2 or H2S package; this board will also work with some of the Toshiba SAV modules.

 (SMT parts and blank board, does not include the mosfet module itself)

Unassembled kit, $15

Assembled, $22.50

 

High Current DC FET Switch

12v and 28v models can switch up to 35 amps, 50v or 65v models more than 45 amps

 

The photo shows Rev 3, an upgrade to the FET switch shown in the technical article; rev 4 is the currently shipping model which has an extra disable pad and includes the aluminum oxide ceramic insulator upgrade which is shipping with all switches beginning Sept. (2019)

 


 

Assembled and tested, low range, 13.5v (10-18v)   $24

Assembled and tested, mid range, 28v (18-35v)   $24

Assembled and tested, high range, 50v (35-55v)   $24

Assembled and tested, highest voltage range, for 65v systems (55-75v)   $27

 

The Ultimate Amplifier Control Board

This photo is version 6.3 (current version 6.5 is the same functionally), designed for the highest powered amplifiers and mast-mounted LNA's, with the following functions and features:

  • On-board sequencer for control of antenna relays, amplifier bias and power supply feeds, and driver RF hold-off
  • High VSWR lockout that will accept either a negative or a positive trigger signal
  • High temperature lockout that will bypass an overheated amplifier until it cools down to a safe temperature
  • Temperature-sensitive fan control for normal cooling
  • Driver RF blocking during antenna relay changeovers
  • Internal regulator, which allows operation from power sources ranging from 12v to 50v
  • LED indicator feeds for power, transmit, SWR lock and High Temperature lock
  • Can be used as a controller for a mast-mounted LNA

A description of all connections into and out of the board is located here: v63control.htm

The temperature sensor, optional voltage reducer and indicator LEDs are supplied; the user must supply the vswr detector and the fan if those functions are to be used.

Assembled and tested, $85  

 

LED Bar Graph Display

The current version changes R22 to a trimmer resistor, allowing the input sensitivity to be adjustable from less than 500mv to more than 15v.

Assembled/tested with red display $27.00  

Assembled/tested with green display $27.00  

Assembled/tested with yellow display $27.00  

Assembled/tested with dual color, 7 green 3 red $27.00  

 

Anaren or ATC 150w Termination (DC - 2.5 GHz), $18

Data sheet

 

 

DC through UHF input Relay board

(please see the technical article here)

 

12v relay PCB as shown with DPDT relay, $20

High Power Output Relay Board

.094 FR4, DC through 222MHz, up to 1.5kw through 2m, 1kw through 222MHz

 

12v high power relay PCB as shown with SPDT relay, 16A contacts $20

12v high power relay PCB with 2 meter/222MHz  compensation capacitor installed, 16A contacts $22

 

50 watt dc through 1.7 GHz relay board

 

 

12v relay PCB as shown with 50w SPDT microwave relay, $32

Blank PCB only, $6

 

VHF/UHF Low Pass Filter and Dual Directional Detector board (for use with kilowatt 50, 70, 144, 222 or 432 MHz amplifiers)

The technical article is here: This is a useful reference for assembling the kit versions.

Note: The default configuration for assembled/tested boards is for the detector diodes to be mounted to produce negative output signals. If you will be ordering the assembled/tested version of this product and prefer the output signals to be positive, be certain to send me an email when you place your order indicating that preference (contact info at the top of this page). Please read the end of the technical article for additional info.

Blank board only (.060 Teflon) $45.00

Complete kit as shown for 50 MHz $75.00

Complete kit as shown for 70 MHz (4M) $75.00

Complete kit as shown for 144 MHz $75.00

Complete kit as shown for 222 MHz $75.00

Complete kit as shown for 70cm $60.00

Assembly and network analyzer tuning/testing service of any filter/detector kit $40.00


For 2m amplifiers capable of producing 1500w or more - a very high power version of the 2m filter/detector using Teflon coaxial capacitors, capable of 2000w+, assembled/tested/tuned
$135.00


For 222MHz amplifiers capable of producing 1500w or more - a very high power version of the 222MHz filter/detector using Teflon coaxial capacitors, capable of 2000w+, assembled/tested/tuned
$135.00

 

HF, VHF and UHF input attenuators for LDMOS amplifiers

Reactance compensated for input VSWR less than 1.1 to1 across the entire band. Other values not shown below are available on request.

HF through 6 meter bands, 3db/100w, assembled and tested - $35.00

HF through 6 meter bands, 6db/90w, assembled and tested - $35.00

HF through 6 meter bands 10db/100w, assembled and tested - $35.00

HF through 6 meter bands, 13db/50w, assembled and tested - $35.00

HF through 6 meter bands, 13db/100w, assembled and tested - $47.00

HF through 6 meter bands, 16db/100w, assembled and tested - $47.00

2 meter band, 3db/100w, assembled and tested  - $35.00

2 meter band, 6db/90w, assembled and tested  - $35.00

2 meter band, 10db/100w, assembled and tested  - $35.00

2 meter band, 13db/50w, assembled and tested  - $35.00

2 meter band, 13db/100w, assembled and tested  - $47.00

2 meter band, 16db/100w, assembled and tested  - $47.00

220 MHz band, 3db/100w, assembled and tested - $35.00

220 MHz band, 6db/90w, assembled and tested - $35.00

70cm band, 3db/100w, assembled and tested - $35.00

70cm band, 6db/90w, assembled and tested $35.00

70cm band, 10db/100w, assembled and tested $35.00


Heat sink material

I no longer supply heat sinks as a part, but you can still purchase the material directly from www.heatsinkusa.com. The amplifiers use the 10.080 inch extrusion, which weighs roughly 1 pound per inch of length. For amplifiers up to 1kw, and for the 1.5kw VHF amplifiers, order a 6-inch length. For 1.5kw HF amplifiers like the HF2000, you will need a length of 10 inches...or you can use two of the 6-inch pieces. Use the drilling templates supplied with your amplifier kits as a guide to drill and tap.