G0MGX via rec.radio.amateur.moderated Admin
2018-03-22 15:11:41 UTC
A new approach to 13cm
Posted: 21 Mar 2018 09:35 AM PDT
You may recall back here where I built a 13cm capability. I've decided to
go about it a different way.
Instead of sending lots of RF up lossy coax with a fixed station
arrangement, I'm going to generate less RF but right next to the
antennamabob and make the whole setup portable.
So here we have 13cm take 2:
In here we have the transverter, sequencer, the VLNA, a SMA relay and
driver, plus this PA will also fit; but I dont have the PA yet. The wonky
board you can see is a FET driver to switch the PA bias supply on during
TX; that will be mounted on top of the PA once I have it here.
I've hooked up my XL Microwave power meter to the output of the Transverter
via a 40dB attenuator and I am measuring:
about 32.5 dBm so close to 2 watts - exactly on the money of the
The PA needs a 1W drive so I will have to attenuate the TX signal by 3dB to
get that correct.