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
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Latching Relay Driver
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Relay Sequencer
High Current DC Switch
L & S Band LNA
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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
600w+ 33cm Amplifier
300w 33cm Amplifier
33cm filter
33 cm Crystal Source
33cm Signal Generator
9cm Transverter
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23cm Signal Generator

click the thumbnail pictures for enlargements or more details
23cm-source-3.jpg (28156 bytes) 23cm-source-4.jpg (24651 bytes) 23cm-source-2.jpg (41485 bytes) 23sigdia.gif (31436 bytes)

This signal generator uses a free-running L-band VCO as it's source. It has a 1 KHz modulator, and a variable-level amplifier (-20 dbm to 3 watts), making it suitable as a source for antenna range measurements, which was it's design intent.

It is reasonably stable for an unlocked oscillator, drifting no more than 300 KHz or so over an hour's time. This is stable enough for instrumentation measurements (like SWR and attenuation). An example of it's use are these sample SWR measurements made on several 23cm antennas.

The small consumer electronics power module shown here is it's power source.