My subscription to Life expired, but I still have a subscription to Mad.

Sunday, June 19, 2016


Thank you for your suggestions on how to fix the interference problem I encountered while using the ELAD FDM-S2 SDR receiver with my MacBook Pro computer.

The source of the noise seemed to be the computer's battery charger/power supply, but all my attempts to fix the problem failed until I noticed that my Heath coaxial switch was not grounded. I assume its connection to ground had been disconnected while I was rearranging the furniture and I forgot to reconnect it.

Reconnecting the switch to ground made a big difference and eliminated most of the noise on the AM/MW band.

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