Home
A 1.5 KW LPF for 160-6m
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
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
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

Some of the projects listed on this site produced requests for PC boards and other parts, so here they are.

Instructions on assembling and use 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 above). 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 Priority Mail the next business day. Postage is added at checkout, and can be as low as $7.50 within the U.S., and $15 U.S.D. International (first class mail). Usually, several kits or parts can be sent in the same box for no additional postage. It can get a bit complex, but the checkout shipping calculator will figure it out for you.

1.5 KW Low Pass Filter Board for 1.5 to 54 MHz

 

Complete kit, unassembled $358

Completed board, assembled, tested and tuned on a network analyzer $463

Blank PC board only, .094 FR4 $45.00

Blank boards are in stock now; complete kits, as well as assembled/tuned/tested boards will ship by December 15th.

 

80 Watt 2 Meter All Mode Amplifier

Blank unpopulated PC board $17.50

Board populated only with the components shown in the photo above, with pre-aligned low pass filter. $90

This pre-populated assembly is offered for builders not wishing to build with surface-mount parts, or are otherwise unable to work with small components. I can customize the input attenuator for whatever drive level you want at no additional cost, just email me after ordering with your requirements (anything from 1w to 10w, 10w is the default if you do not specify).

The other components needed for the complete amplifier are not supplied with this assembly, and are listed here.

Machined heat sink for the 80w 2 Meter All Mode Amplifier

I have a small number of these available, black anodized with a machined cavity for the amplifier module, and another to provide clearance for the relay contacts. This was done to eliminate the need for the board spacers, and to permit the board to be installed flush against the heat sink. Drilled/tapped holes are provided for mounting the board.

$70


 

 

4-event sequencer

 

Unassembled kit $20

Assembled and tested $30

 

Latching Relay Driver


 Unassembled kit, $15

 Assembled and tested, positive pulses, $25

 Assembled and tested, negative pulses, $25

12 to 28v Boost Regulator


Unassembled kit, $26

Assembled and tested, $33.50

L and S Band LNA (Board Only)

Blank board only, FR4 material, $7.50

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, $15

Can switch 12v, 28v, or 48v ranges at more than 30 amps

 

The version in the kit is Rev 3, an upgrade to the FET switch shown here and in the technical article. The schematic and optimizing table for rev 3 is here.


Unassembled kit,  $15

Assembled and tested, low range (12v)   $20

Assembled and tested, mid range (28v)   $20

Assembled and tested, high range (48v)   $20

 

The Ultimate Amplifier Control Board (V6)

This is version 6, 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

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.

Unassembled kit (aprox 110 parts in the kit), $50  

Assembled and tested, $85  

LED Bar Graph Display Kit

The current version supplied in the kits is v5, which changes R22 to a trimmer resistor, allowing the input sensitivity to be adjustable from less than 1v to more than 15v.

Unassembled Kit with red display $18.50  

Unassembled Kit with green display $18.50  

Unassembled Kit with yellow display $18.50  

Unassembled Kit with tri-color display $20.00  

Assembly Service for one board $7.50  

Dual RF Detector Board Kit

Can be used for monitoring RF power, to provide ALC feedback to a driving radio, or an SWR trip signal for the Control Board Kit.

Unassembled Kit, negative output (recommended), $18.50  

Unassembled Kit, positive output, $18.50  

Assembly Service for one board, please specify negative or positive output and attenuation values via email: $6.50  

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). There is a VIDEO here showing how to connect this coupler. The hardware kit listed below contains an .040 aluminum spacer and the fasteners mentioned in the video.

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

23cm High Power Coupler $20.00

Hardware Kit for Coupler above $5.00

 

23cm FR4 Hybrid Coupler

Lower-cost part for output power levels up to 50w

Provided with a 1w termination for low-power applications $9.50

Provided with a 10w termination installed at "dump" port $14.50

 

 

Anaren or ATC 150w Termination (DC - 2.5 GHz), $11

Data sheet

 

DC through UHF input Relay board

(please see the technical article here)

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

12v relay PCB as shown with SPDT relay, $18

 

High Power Output Relay Board

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

 

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

13 cm High Power Coupler (Ro4003c)

For combining the outputs of two amplifiers (or more), and capable of power levels in excess of 500w. Supplied with RG401/402 coax fasteners as shown in the photo. Designed for a frequency range of 2280 to 2500 MHz, and measures aprox. 1.5 inches square.

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 provided with 3 coax fasteners as shown, $25.00

125w or 150w chip termination (shown on this page), mounted on a copper spreader, and spaced at the correct height for this coupler, $10.00

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

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

The technical article is here

6 Meter Kilowatt RF Deck Kit

This kit provides all parts necessary to build the 6 Meter Kilowatt Amplifier RF deck, and will work with the Freescale MRFE6VP1K25H, the NXP BLF578XR or the newer BLF188XR LDMOS 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). All coax pieces are pre-cut and trimmed, ready to install. (The reference technical article is here).

Complete kit for building the RF deck shown on the right, supplied with machined copper spreader and NXP BLF188XR LDMOS, $473.00  

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

Basic kit without LDMOS or copper spreader (includes PC board), $165.00  

3 x 5 x 1/2" copper heat spreader, fully machined $100.00  
 

NXP BLF188XR LDMOS, $208.00  
 

PC board only, $40.00  

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 BLF188XR with a copper spreader (or when you order the complete complete kit). Just add this service to your shopping cart.

LDMOS flow-solder attachment service, $20.00  

6 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. 1kw output minimum; typical output at saturation is 1100 to 1200w. Requires 1 to 1.5w drive for 1kw out, 50v @ 27a VDD, 12v @ 20ma for bias. (the reference technical article is here).

Assembled and tested as shown $740.00

 

6 Meter Kilowatt Amplifier

The complete turn-key amplifier as shown in the web article, using the latest RF pallet. This amplifier also has a sequenced 13.5v power feed for operating a remote LNA, if you use one. Meets all FCC specs for harmonic and spurious signal suppression.

Requires a 50v 30a power supply (not included).

There is one unit in stock at this time ($2700.00); it is the standard build as shown here, with engraved front panel, dual meters and a 16 db input attenuator, suitable for 50w to 100w drivers. Contact me directly at the email address shown below if you'd like to have this unit.

I build these to order in several configurations; different attenuator values, painted or engraved front panel, etc. Custom builds take about 2 weeks from start to finish. The standard build as shown is $2700, and has an engraved front panel, dual meters and a 16db input attenuator, suitable for 50w to 100w drivers. Cost for other options varies  ($2650 and up); shipping within the US is included, international postage is a few $ more. A 10% deposit will get the process started, please contact me via email if you would like a custom build.

 

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 or the newer BLF188XR LDMOS 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). All coax pieces are pre-cut and trimmed, ready to install. The reference technical article is here).

Click here to view the assembly instructions for the board kit.

Complete kit for building the RF deck shown on the right, supplied with machined copper spreader and NXP BLF188XR LDMOS, $458.00  

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

Basic kit without copper spreader or LDMOS  (includes PC board), $150.00  

3 x 5 x 1/2" copper heat spreader, fully machined $100.00  
 

NXP BLF188XR LDMOS, $208.00  
 

PC board only, $40.00  

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 BLF188XR with a copper spreader (or when you order the complete complete kit). Just add this service to your shopping cart.

LDMOS flow-solder attachment service, $20.00  

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 @ 27a VDD, 12v @ 20ma for bias. (the reference technical article is here).

Assembled and tested as shown $725.00

 

222 MHz Kilowatt Amplifier

The complete turn-key amplifier as shown in the web article, using the latest RF pallet. This amplifier also has a sequenced 13.5v power feed for operating a remote LNA, if you use one. Meets all FCC specs for harmonic and spurious signal suppression.

Requires a 50v 30a power supply (not included).

There is one unit in stock at this time ($2700.00); it is the standard build as shown here, with engraved front panel, dual meters and a 6 db input attenuator, suitable for 5w to 25w drivers. Contact me directly at the email address shown below if you'd like to have this unit.

N0IRS (JD) took the time to make a demo video on the one I built for him, and it can be seen on YouTube here.

I can build these to order in other configurations; different attenuator values, painted or engraved front panel, etc. Custom builds take about 2 weeks from start to finish. Cost varies with options chosen ($2650 and up); shipping within the US is included, international postage is a few $ more. A 10% deposit will get the process started, please contact me via email if you would like a custom build.

2 Meter Kilowatt RF Deck Kit

The kit provides all parts necessary to build the 2 Meter Kilowatt amplifier RF deck, and will work with the Freescale MRFE6VP1K25H, the NXP BLF578XR or the newer BLF188XR LDMOS 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). All coax pieces are pre-cut and trimmed, ready to install. (The reference technical article is here).

Assembly instructions are here

Complete kit for building the RF deck shown on the right, supplied with machined copper spreader and NXP BLF188XR LDMOS, $458.00  

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

Basic kit without copper spreader or LDMOS, $150.00  

3 x 5 x 1/2" copper heat spreader, fully machined $100.00  


 

NXP BLF188XR LDMOS, $208.00  
 

PC board only, $40.00  

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 BLF188XR with a copper spreader (or when you order the complete complete kit). Just add this service to your shopping cart.

LDMOS flow-solder attachment service, $20.00  

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 @ 27a VDD, 12v @ 20ma for bias. (the schematic for this unit is here).

Assembled and tested as shown $725.00

 

2 Meter Kilowatt Amplifier

The complete turn-key amplifier as shown in the web article, using the latest RF pallet. This amplifier also has a sequenced 13.5v power feed for operating a remote LNA, if you use one. Meets all FCC specs for harmonic and spurious signal suppression.

Requires a 50v 30a power supply (not included).

There is one unit in stock at this time ($2700.00); it is the standard build as shown here, with engraved front panel, dual meters and a 13 db input attenuator, suitable for 2.5w to 50w drivers. Contact me directly at the email address shown below if you'd like to have this unit.

N0YK (Chad) also made a demo video for the one he has, and his can also be seen on YouTube, as well as on his web site at http://users.wbsnet.org/n0yk/kilowatt.htm

I build these to order in several configurations; different attenuator values, painted or engraved front panel, etc. Custom builds take about 2 weeks from start to finish. The standard build as shown is $2700, and has an engraved front panel, dual meters and a 13db input attenuator, suitable for 2.5w to 50w drivers. Cost for other options varies  ($2650 and up); shipping within the US is included, international postage is a few $ more. A 10% deposit will get the process started, please contact me via email if you would like a custom build.

 

VHF and UHF input attenuators for LDMOS amplifiers

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

6 meter band, 6db/25w, assembled and tested - $35.00

6 meter band, 10db/50w, assembled and tested - $35.00

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

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

2 meter band, 6db/50w, assembled and tested  - $35.00

2 meter band, 10db/50w, assembled and tested  - $35.00

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

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

220 MHz band, 6db/50w, assembled and tested - $35.00

70cm band, 3db/25w, assembled and tested - $35.00

70cm band, 6db/50w, assembled and tested $35.00

The XRF-286 150w amplifier boards for 23cm are back in stock

Blank board only (Rogers Ro4003c) $45.00

Click here for a high-resolution photo showing component locations (component locations in the bias circuits are re-arranged a bit).

The original write-up on this amplifier is here

And for those of you who have the XRF LDMOS, but lack the copper heat spreaders...

Please note: this item is temporarily out of stock until 30 November

1.75 x 1.75 x 1/4" thick copper spreader, fully machined with milled slot and holes. $20.00

And the XRF-286 150w amplifier kits for 23cm are also back in stock

All parts requited to build the amplifier are included as shown in the photo (less heat sink extrusion). Machined heat sinks (5.35 x 8) will be available in September.

150w 23cm amplifier kit $310.00

There is a video here showing how to assemble and test this amplifier.

150w 23cm XRF-286 amplifier, assembled and tested to 5.35 x 8" heat sink, SMA connectors as shown

 

150w 23cm amplifier, assembled and tested $450.00

 

 

150W Turn-Key Amplifier

Plug-and-play with internal power supply, runs on 120 or 240 VAC, 50-60Hz. 150w out for 10w in.

Cost is $1700.00 USD plus shipping. Shipping has been running $35 CONUS, and $96 outside of the USA). If you are interested in purchasing this item, please contact me directly via email.

order form for 70cm amplifiers

70cm Products (432MHz)

The left side of this page lists the products optimized for the NXP BLF184xr LDMOS, and the right side lists offerings for the Freescale MRFE6VP5600H LDMOS. The Freescale device has been getting to be more difficult to find and tends to be more expensive, and that is the reason for offering the same products optimized for the NXP device, which is currently in good supply. Aside from a small difference in gain, one seems to perform as well as the other, but the advantage of using the NXP device is they are in stock at most distributors, and I can also offer them here from my own stocks.

500 watt 70cm RF decks and sub-assemblies

For the NXP BLF184xr

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, tin plated) - $45  


Basic 500W amplifier kit for the NXP BLF184XR LDMOS transistor (does not include the LDMOS transistor) - $125  


3 x 5 x 1/2" copper heat spreader fully machined for the NXP BLF184xr, $100.00  
 


One NXP BLF184XR LDMOS, $137.00  
 


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 BLF184XR 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 BLF184XR LDMOS transistor, as shown above - $650  

For the Freescale MRFE6VP5600H

4 to 5w in for 500w out

click here to view the assembly guide for this product

blank board only (TC-350 substrate, 2oz copper, tin plated) - $45  


Basic 500W amplifier kit for the MRFE6VP5600H LDMOS transistor (does not include the copper spreader or the LDMOS transistor) - $125  


3 x 5 x 1/2" copper heat spreader, fully machined for the Freescale MRFE6VP5600 $100.00  
 


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 BLF184XR with a copper spreader. Just add this service to your shopping cart.

LDMOS flow-solder attachment service, $20.00  


  

 


1 Kilowatt 70cm RF decks and sub-assemblies

For the NXP BLF184xr

18 to 20w in for 1kw out

click here to view the assembly guide for this product 

blank board only (TC-350 substrate, 2oz copper, tin plated) - $125    


Basic 70cm KW amplifier kit for the NXP BLF184XR (does not include the copper spreader, heat sink, board spacers, termination spacers, or the LDMOS transistors) - $300  


board and termination spacers for the 70cm KW amplifier  - $20  


Fully machined 4 x 5.5 x 1/2" copper heat spreader for 1KW rf deck; LDMOS trench at the correct width/height for two NXP BLF184XR, and fly-cut for flatness to mate with heat sink surface - $115  

 


Two NXP BLF184XR LDMOS, $274.00  
 


If you do not wish to do the flow-soldering procedure yourself, this service is available at the time you order your NXP BLF1884XR pair with a copper spreader. Just add this service to your shopping cart.

LDMOS flow-solder attachment service for two BLF184xr, $40.00  


Assembled and tested RF deck using BLF184xr LDMOS, mounted to the machined heat sink shown in the photo above - $1275  


Assembled and tested RF deck using BLF184xr LDMOS, without aluminum heat sink; after testing, the product is transferred to a flat shipping plate, ready to be mounted to your own heat sink (this method reduces the weight for shipment, and is the most economical method for international shipping). Includes the board and termination spacers - $1150  

For the Freescale MRFE6VP5600H

10 to 12w in for 1kw out

 

 

blank board only (TC-350 substrate, 2oz copper, tin plated) - $125    


Basic 70cm KW amplifier kit for the Freescale MRFE6VP5600H (does not include the copper spreader, heat sink, board spacers, termination spacers, or the LDMOS transistors) - $300  


board and termination spacers for the 70cm KW amplifier  - $20  


Fully machined 4 x 5.5 x 1/2" copper heat spreader for 1KW rf deck; LDMOS trench at the correct width/height for two MRFE6VP5600, and fly-cut for flatness to mate with heat sink surface - $115  

 


70 cm Amplifier notes

Postage for blank boards, basic kits and the copper spreaders runs $7.50 CONUS, and $25 international. If ordering the 1kw spreader, or more than one of the 500w spreaders,  postage is higher (due to weight). For the assembled RF decks, USA postage is included in the price, $35 additional for international. For the heaviest product (assembled 1 kw RF deck attached to a heat sink) the additional international postage is $65.

The recommended method for attaching LDMOS devices to the copper spreader is flow-soldering. For those builders uncomfortable with the process, this service is available as listed above.

If you are building from the blank board or the basic kit, the transistors can be ordered from several suppliers; at this time, most of the major distributors have them in stock, and the NXP devices can also be ordered from my own stock here. Material for making the copper spreaders and aluminum spacers is available from Onlinemetals.com (specify C110 H04 copper). Heat sink material is available from Heatsinkusa.com (specify the 10" wide material with a .375" base).

For those without the capability to machine heat sink material for flatness, or to drill/tap required hole patterns for the rf deck, I have a small number of pre-machined heat sinks available ($90).