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All posts for the month April, 2017

Here is a Saturday morning update report regarding my rf switch project.
Back to the good old drawing board, I guess.
Switch are switching ok, and loses are acceptable, this is fine.
However, it is picking up ambient noise. I suspect its being a shielding problem and an isolation problem between RF parts and DC parts of the relays.
To give you an idea of the rx degradation with this thing is in line compared to the narda 023.
Pointing the 144 array to a relatively cold spot, the wsjt noise floor rises about 4dB, and this is simply not acceptable. This thing is useless for weak signal work until these problems are rectified.
I have now installed a narda 023 again.
Hoping to do some EME contacts again this weekend. See you on the moon.