[HCDX] QRM from LCD thermometers

[Björn Danielsson <bjorndan@xxxxxxxxxxxxxxx>]

I also had the same problem with a LCD thermometer as Johan Berglund. When I tried to listen at ham´s on the 160m band I had two S9+ short buzzes every 10th sec. But it was only on my Sangean 909 with an indoor active antenna (telescope wip) and not on my Icom R75 with 100m wire. So after some days (and nights) it was a very irritating Qrm. So after I had gone through the whole house in my hunt for the local qrm I tried at the last resort to remove the batteries from my thermometer and ... it dissapeared!

I figured out that it was a very local qrm since the thermometer is located 50 cm from the Sangean´s antenna and 1.5 m from the start of my 100m wire and om the wire there was no qrm from the thermometer. It´s temp sensor is  located where the wire starts so it is only the displayhousing causing the problem.

73 Björn Danielsson, Dals långed, Sweden

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