[Lowfer] N1BUG on 137.779 kHz QRSS60

Michael Sapp wa3tts at verizon.net
Wed Mar 21 18:12:51 EDT 2018


Paul & All:  Looks like I'm 200Hz low as I did not do a rx calibration and no GPS lock here....

As received this afternoon on my NW EWE antenna and considerably less noise than past 4~5 days....


N1BUG 137.779 kHz ARGO

https://www.dropbox.com/s/u2k0m15ssu2q3rf/capt00022.jpg?dl=0


Current Bench Top LF Converter @ WA3TTS

 https://www.dropbox.com/s/u2k0m15ssu2q3rf/capt00022.jpg?dl=0


The diplexer between the LPF and preamp seems to have the most beneficial effect

in matching and additional filtering.  The second 137 kHz diplexer takes what little is left of

the AM band signals in the 540~600 kHz range and places them below the noise level.  

Note that with my 4 and 5 mile proximity between 50kw stations at 1020 and 1080, I can light

an LED with my NE EWE antenna...~:)

https://www.youtube.com/watch?v=VfGIeZIoWZo


73, Mike wa3tts


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