[Elecraft] Popping noise and problems with iSDR / iMic

Andrew Robertson andrew.robertson at gmail.com
Mon Apr 29 16:59:55 EDT 2013


I've been enjoying my new KX3, finally hitting the paddle after meaning to learn code for years and years.  It's really fun and the narrow DSP filtering is really easy on the ears.

Anyway I have noticed, that when I have been working portable (with wires radiating from the screw where I have grounded the rig), that I tend to hear occasional pops, very loud pops that blow my ears off if using headphones. It seems to be related to the antenna moving (phonics?) but sometimes they happen even if it is still.  Has anybody else encountered this issue?  Is there something I am missing?

Another issue that I have had is with iSDR.  It works great as a waterfall chart and such, but the audio quality is just awful.  No matter what the iPad's volume is set to, the sound is very overdriven and crunchy.  If I tune the radio to a station and listen to it through the speaker in the radio, or phones hooked to the radio, it sounds fine. However, when the iPad demodulates the same signal it is just awful.  For now I have just forgotten about demodulating with the iPad and am just using it as a simple panadapter.

Great radio and I can't wait for the filter module to get here!

73, KE7TMA


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