Keith, KD1E asked: I haven't used or worked a K2 on SSB but I get the impression it is not the best audio. Seems to me the issue is not the mic, but the 2.0 KHz SSB filter. That's pretty narrow and won't give good hi-fi (or mid-fi) SSB.
How hard would it be to increase the bandwidth of the SSB board's filter to 2.6 KHz or so? I'd love that. If I want the bandwidth limited I can do it with an outboard parametric EQ. ------------------------------------- Elecraft provides kits of capacitors to change the SSB filter bandwidth, widening it to 2.2 or 2.6 kHz. Order SSBCAPKT. The original SSB filter was made narrow to provide more "talk power" or "punch" for QRP signals. It's a tradeoff between the narrowest possible bandwidth, which provides the loudest signal at the other end, and audio quality. I opened up the filter in my K2 to 2.6 KHz and it receives 'standard broadcast' A.M. signals with the same fidelity as most small AM receivers. (With the 160 meter option installed, the K2 receives the upper part of the North American A.M. broadcast band). The wider bandwidth also allows you more flexibility in setting the passband for test transmit audio (remember, FL1 is *always* the one used on xmit, no matter which filter you have selected for receive). With my somewhat gravelly voice I find better to raise the low frequency cutoff up above 300 Hz and make use of some of the higher frequency response to balance the audio. Ron AC7AC _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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
