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
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

Comments? email to

Current Projects

PRF/MRF13750 1296MHz power amplifier; 6-7w in for 600w + output, 50v @ about 22amps
Instructions for setting up an IC-9700 for WSJT-X and WSJT-10
Instructions for setting up an FT991 for digital modes using WSJT-X
Remote LNA Controller (for handling mast-mounted LNAs)

Solid-State 23cm Amplifiers

For those of you participating in this 23cm amplifier project, here is the link to the project construction tips and tools page.

RA18H1213G Module data sheet
Test Data after Enhancement
Initial development notes: Couplers for combining amplifier modules, made with FR4 and R4350B laminates
Suggested general layout for a 2-module amplifier and 4-module amplifier
2-28-2006 - Revised module board (v3) schematic.
3-2-2006 - module PC board, (v3), test load with SMT components
2-28-2006 - FR4 coupler measurements after manufacture by a PC shop
2-28-2006 - Input coupler for use with10w radios
3-9-2006 - Some steps in the making of the output couplers
3-12-2006 - BOM (bill of materials) for the pc boards for this project
A completed turn-key 60w amplifier
11-18-2006 Steve Miller's (W6QIW) completed 2-module amplifier