Looks like I blew my sband LNA.
I noticed that I could not hear the "beacon" sat signal on 2242.488, so checked. changed the LNA to another one, and signals came back - probably with a slightly higher Noise Figure (L-band LNA).
so - I opened the LNA and what did I find ? it is not a GaAs Fet amplifier as such, but a GaAs MMIC. Not really a problem, I have a replacement with the same pinout - only snag - it is SMD, so I hope my soldering and vision will up to the challenge.
LNA Spiritus Basta !
Why did this happen ? I transmitted on 2m with an antenna too close to the sband antenna. Oops !
Another Blast from the Past -- Dino KL0S in the early 70s -- A Turner mic,
a Vibroplex, an HQ-100, a DC receiver, and a tech library.
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*Dino: Yes the parallels are really eerie OM. There is that Turner mic.
I still have mine too, but I had to replace the element with an Electret.
Mine ...
1 day ago
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