As per my experiments with fixed audio out on pin 8 of the mic socket... Don and Sverre were both correct in their assessment that changing the value of the 10k resistor would make little difference. I tried a 3k and 2k in it's place and could detect no noticeable difference.
I did however manage to fix my problem by simply using the 'mic' socket on the PC soundcard, instead of the 'line-in'. In fact I need to run with the slider control on the soundcard set-up at virtually zero, or it will overload. Thanks to Don and Sverre for their advice...Much appreciated guys. David, VK2NU David, I would say the answer is 'maybe'. And the reason for the uncertainly is that it depends on what you are driving. The impedance of whatever you connect to the far end of the resistor will determine how much current will be drawn and the voltage developed across it. You can install the fixed audio board between the front panel and control board if you lay the resistor and capacitors down flat on the board. The fixed audio board will provide up to about 3 volts to the soundcard, and that is much more than enough to overdrive it. 73, Don W3FPR > -----Original Message----- > > I'm just playing about with my K2 and have performed the mod to > get a fixed > audio out on pin 8 on the mic socket as per LA3ZA's instructions, using a > 10k resistor between R3 and the mic socket. > > This works fine, but the audio out isn't quite enough to drive my PC > soundcard to the level I would like. I have a small board here > (as per Don's > W3FPR design) for the small audio amp, but would prefer if possible to get > the audio out of the mic socket without having to install this board. > > My question is.....would I be-able to get more audio out of pin 8 if I > change the value of the 10k resistor in LA3ZA's mod ?? > > Cheers All > > David, VK2NU _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
