Guy, Forgive me for putting bandwidth change into the already complex argument, but since you mentioned it, here is further explanation of my view on that:
When I'm operating QSK I want to hear my frequency between dits but *only my* frequency. All too easily I make transmission errors if the radio doesn't do a perfect emulation of a code practice oscillator. Cranking down the receive bandwidth to 100 Hz during transmission often brings something close to that effect. In all but the shortest QSO's I routinely do this manually. It would be great if it could be done automatically. If the other station in the qso breaks into my transmission then I welcome it, even with the stumbling on my part that is likely to result. If I hear another station nearby *while I am transmitting* I see it as a nuisance. During reception things are a bit different. On the one hand, my copy will be better if the bandwidth is narrow. On the other hand, another station may legitimately be calling me slightly off frequency. I am less embarrassed to miss a character during reception than stumbling during transmission. Probably in a typical situation the ideal receive bandwidth during reception is wider than during transmission, assuming that a small bandwidth is used as the tool of choice to remove unwanted din during transmission (which does not include what may be coming from the other station in the qso). 73, Erik K7TV > When I'm operating QSK, I don't want the K3 to change bandwidth, level or > where the AGC was when I hit the key. I operate QSK because I WANT to hear > my frequency between dits. What I am listening to within the RX bandwidth > is hardly knowable by the K3, nor can it know when I am done. I > specifically WANT the "din" between the bits. The "din" in between is why > I > turned on QSK. > > 73, Guy _______________________________________________ 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
