[Lowfer] MP and EAR in daylight

Michael Sapp wa3tts at verizon.net
Thu Nov 29 14:05:00 EST 2012


Hi All: MP on Wed afternoon overloading the ARGO waterfall at 30dB out of the noise peak

http://i1296.photobucket.com/albums/ag19/wa3tts/mpnv2812.jpg


And EAR about 11~12dB out of the noise on Tue afternoon with some HVAC modulation (radios near basement furnace) on the Heath HD-1420 converter.

http://i1296.photobucket.com/albums/ag19/wa3tts/EARNV272.jpg

I recall W4UCH had a simple proportional temperature control circuit for a DIY crystal heater in his Gunnplexer Cookbook with some back-to-back PNP transistors and a diode sensor.  I may try have to give it a try on the LO crystal in the HD-1420.....

Bit's and Pieces of TAG showed up on 185.297 around 6PM Wed evening but I did not save that capture....

73  Mike wa3tts



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