Benny, I know nothing about that particular microphone, but the bias voltage and resistor value for an electret microphone element is not normally critical. I would try a 5600 ohm resistor between the K2 front panel +5 volt line and the AF pin.
73, Don W3FPR On 11/2/2011 4:53 AM, kruegerbenny wrote: > Hello, > > a friend of mine gave me an old microphone from Philips (serial no. : > C944685 ; part no. : 3513 505 00692) which I want to use with my K2 > transceiver. The friend said that it should be an electret microphone, so it > will need a bias voltage (he said 12V, but I found in the KSB2 manual that > some mic's work well with only 5V). It is also written that some mic's need > a bias resistor between AF and 5V. > Is there someone who has a manual to the described mic or an idea how I can > find out how to connect the mic. > > Thx for your help > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
