majoco
Stirrer
Same radio as previous post but with another problem - more of a philosophical problem really! On the front panel is the pseudo LED "S" meter that shows the output power as well as the incoming signal strength. The instruction manual warns against trying to squeak more power than rated, 5 watts low, 25 watts high, but unfortunately I don't have any such luxuries as a Bird 43 inline power meter or anything that will measure power or voltage at 145MHz at all. I have a couple of HF twin meter VSWR meters that do indicate something and one of them says to set the calibrator control to 1.8 at 144MHz to measure the power - but it says the low power is 11 watts and the high is 22 watts so I don't believe that, especially when the ammeter on the power supply says only 2 amps when delivering 22 watts. It does show that my 2m antenna has a very low VSWR at mid-band so I'm pleased with that. About the only thing I have that could be used is a Heathkit RF scope probe and measure the peak half wave rectified signal on a scope or a digital voltmeter - I do have a 12watt 50ohm load and BNC Tee piece..
Anyone got any suggestions on how to achieve setting the power to 5 watts so I can calibrate the VSWR meter? Thanks for your ideas.
Anyone got any suggestions on how to achieve setting the power to 5 watts so I can calibrate the VSWR meter? Thanks for your ideas.