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
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

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33 cm Crystal Source

There is a shortage of simple, economical test equipment out there for 33 cm right now, so if you are on the band, or thinking of getting on, you may find it useful to have a portable signal source separate from your main radio to use for various tasks, including:

  • Testing newly constructed antennas for proper match
  • Beacon transmitter service
  • A portable signal source for antenna pattern testing
  • Testing various UHF or microwave components (cables, relays, etc.) 

The source described here is crystal-controlled, it's output is clean (it uses the 33 cm filter described in the navigation bar on the left) and the output can be varied from 20 mW to 3 Watts. It also has a 1 kHz pulse position for use with other test equipment. It can be powered by any 12 Vdc power source, including a simple "wall wart".

click any thumbnail to enlarge the picture or see more information
Finished Source Inside Layout Output Spectrum Modulation
done.jpg (34448 bytes) inside.jpg (66349 bytes) final test at 3w.jpg (278880 bytes) biasmod.jpg (37445 bytes)
Block Diagram Low Level Stages 3 Watt Final Control
osc-flx-amps.jpg (174120 bytes) 3wfinal.jpg (40740 bytes) pandc.jpg (59833 bytes)