4-event sequencer

VHF OCXO

Supplied with all parts except for the crystal and enclosure

Latching Relay Driver

Crystal Oven Controller

12 to 28v Boost Regulator

L and S Band LNA

Mosfet Module Amplifier Board Kit  - for any of the Mitsubishi RF modules in the H2 or H2S package (SMT parts and blank board, does not include the mosfet module itself)

High Current DC FET Switch, $15

Can switch 12v, 28v, or 48v ranges at up to 30 amps

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

Upgraded Multifunction Amplifier Control Board (V5)

(sequencer + fan control + bias switch + VSWR switch)

This kit includes all parts shown here, plus a sensor (thermistor) for the fan controller, 3 panel-mount LEDs, and 2 spacers for mounting the board.

The builder must supply the cooling fan, and a VSWR detector if those functions are to be used.

The Ultimate Amplifier Control Board (V6)

This is version 6, designed for the highest powered amplifiers and mast-mounted LNA's, with all the functions and features of the V5 board, plus:

• Driving Radio RF blocking feature

• High temperature lockout feature

• Accepts power supply voltages from 12v to 50v

• SWR latch will accept a positive or negative input signal

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.

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.

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.

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.

23cm FR4 Hybrid Coupler

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

I was able to locate additional Teflon material to make a few more of these sets, so they are back by popular demand for now. These couplers are made using .062 Teflon substrate, are mounted on a copper backplane, and have 150w terminations permanently installed at the 'dump' ports. Coax fasteners are provided with the set. Please see the video demonstrating recommended installation and use.

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

Data sheet

222MHz Kilowatt RF Deck Kit

This kit provides all parts necessary to build the Kilowatt 222MHz amplifier RF deck, including the PC board, 12 ohm and 25 ohm coax cables, ATC chip capacitors, and metal mica matching capacitors. The copper heat spreader and LDMOS transistor are not included (the reference technical article is here).

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. Supplied with 24 inch wiring as shown, ready for connection into your system. (the reference technical article is here).

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).

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 build these to order, and it takes about 3 weeks from start to finish. Cost is $2500.00, 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 one built for you.

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 metal mica matching and bypass 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. Supplied with 24 inch wiring as shown, ready for connection into your system. (the schematic for this unit is here).

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).

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, and it takes about 3 weeks from start to finish. Cost is $2500.00, 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 one built for you.

150W Turn-Key Amplifier

I'll have the next unit available in late March (2012). 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.

XRF AMPLIFIER BOARDS and KITS

I'm no longer buying/supplying commercially made boards or making kits for the XRF amplifiers. Additional information on making these amplifiers, including the artwork necessary to make your own PC boards for them, can be found here:XRF-286 Amplifiers for 23cm.