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.
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
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.
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)
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.
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
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.
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)
The current version changes R22 to a trimmer resistor, allowing the input sensitivity to be
adjustable from less than 500mv to more than 15v.
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.
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 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
Unassembled 6-range filter kit, allowing multiple configurations for
constructing an LPF for either single or dual-pallet LDMOS amplifiers of any
type. $375
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
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
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
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.
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.
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)
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