Have you tried it without the clip-on mic? I used an Olympus recorder for quite a while with no problems. I hooked the speaker output of the radio through a "Y" connecter directly to my recorder and headphones. The first set of headphones that I used were of the "noise blanking" variety and were battery powered. When I transmitted the rf would wreak havoc with them. I switched to another set of standard headphones and that eliminated the problem.
Chuck, KM9U
----- Original Message ----- From: "Bill W1PA" w1pa@hotmail.com To: AMSAT-BB@amsat.org Sent: Friday, April 15, 2011 17:19 Subject: [amsat-bb] RF Quiet my digital recorder
I am using an Olympus digital audio recorder for logging LEO passes, because I can directly transfer a .wma to my PC from it (versus the tape recorder I used in the 90's).
I am using an extension clip-on mic. I am finding that it generates a lot of RF crud on 435, enough to swamp the RX if I am not careful.
Beside a torroid on the mic cable, and maybe a foil/mesh cover over the recorder (maybe one of those new-fangled RF-ID protecting wallets), anything else I should try?
Bill W1PA
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