My Yamaha CM500 does not include electronic noise reduction. The supplied battery box is for bias, and isn't required if you can get bias elsewhere, like a PC microphone connector, or a K3 with microphone bias turned on.
Dick, K6KR -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Malcolm Sent: Saturday, February 18, 2012 10:18 AM To: [email protected] Subject: [Elecraft] Yamaha CM500 / KOSS SB40 Can some one who has a pair of these tell me if there is any electronic noise reduction circuitry in the headphones or is it by physical isolation only please? Sorry to be off topic Malcolm G0MIC ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
