Homemade 2.4 GHz RF Amplifier - Testing ON AIR 

Did you try measuring the RF coming out trough the various non-RF wires? (like the power cable, thermal monitoring); I noticed that the wires just pass trough the enclosure, without any other measure applied - I may have missed something of course; the point that I am trying to make is that any conductor that passes trough the case which is not locally grounded will carry the RF signal - it is common to use dedicated pass trough's that provide capacitance to the case to shunt any high frequency noise.

Nice engineering mate. Good work.

Great setup Matt!

I think you might need to add some heat sinking to that isolator. As it stands, it would probably get very warm if a significant proportion of your output power ever came back down to it. Why not try to thermally couple it into that big blown heatsink?

Awesome ‼ Thanks, Matt 👍

Oh! Great, I was just interested in such amplifiers. However, I have a different range - HF

G'day, interesting build. You showed us the 10GHz out of the satellite to show you have no out of band radiation but you didn't show us the harmonics you may be generating on 4.8/7.2GHz etc. Do you have some spectrum analyser shots of that to give us an idea of the spectral purity of the amp? Cheers.

Wow that's quite a powerful amp at these frequencies, considering the gain available in a small dish. Good job. 73 de KT1R

The circulator looks good but that needs to be directly off the PA as it needs to be mounted to the heatsink but I cant work out why ya didnt put any TX/RX relay and a sequencer in the case cause u will need it

Great video and great technology BUT!!! One of those frequencies I personally ( ex radar worker ) won't amplify to more than a few milliwatts at best (in a home setting). The fact that technology allows us to do it does not mean we should be doing that (again, in a home set up), stay safe, and avoid those Frequencies ( in high power). 250mw radiated AWAY from your property should be the max around your home and family, why? cancer is not your mate, the gear to measure this kind of unwanted radiation on this spectrum of the RF band (RF leaks/reflections ) are limited and expensive, its a hobby, doing the wrong thing here might limit your play time in the long run. never underestimate the high frequency spectrum, some frequencies are best left alone (again, in a home setting). No tin foil hat around here, 2.4Ghz is a great band to play with when used with low power applications it will not be something to worry about. Using 1 Watt at 1m from an omnidirectional antenna, at 2.4GHz, that signal has dropped by 40dB, which has you at .01 milliwatts, or 10 microwatts, now compare that with 900MHz (same condition as above) will be dropped by 30dB, which is 100 microwatts., when using higher power setting things will become ugly very quickly.

Nice job, 73 de Iu3qph Bob