Yes, many of us know all this, but it's still nice, under benign conditions, to operate using a wider waterfall for both transmit and receive. I often operated PSK on my Orion using the 6kHz filter, it's fun to see pretty much all the PSK activity on the band at once - context, right? When I've opened up the BW like this I always disable AGC anyway. When the going gets tough, I narrow the BW.
Since I paid for the 6kHz filter, I'd like to use it on DATA A if I choose, since there is no technical limitation in the K3 preventing it AFAIK. Bob NW8L On Fri, Sep 19, 2008 at 1:35 PM, Don Wilhelm <[EMAIL PROTECTED]> wrote: > Dave, > > OTOH, best results with AFSK is to use a narrow receive filter. It keeps > strong undesired signals out of the passband. > Strong undesired signals in the passband cause a reduction of receiver gain > because the AGC reacts to them. > Sure, the computer can handle and display them, but if the receiver gain is > reduced because of a strong signal that just came on, your chances of > maintaining solid print is reduced. > > Do as you choose, but I prefer to tune my data mode signals just like any > other - with the VFO knob, and use a narrow filter to get rid of the 'other > trash' on the band. > > 73, > Don W3FPR > > > Dave Quick - KØEKL wrote: >> >> I'd like to be able to transmit in Data-A mode through my 6 Khz AM filter. >> Being able to see ~6 Khz of spectrum in the waterfall window would be >> great. >> >> -Dave Quick KØEKL >> >> >> >> >> -----Original Message----- >> From: [EMAIL PROTECTED] >> [mailto:[EMAIL PROTECTED] On Behalf Of Joe Subich, W4TV >> Sent: Friday, September 19, 2008 11:55 AM >> To: 'zibs'; [email protected] >> Subject: RE: [Elecraft] K3 PSK31 with Digipan >> >> >> >>> >>> But in Data A mode, one can expand the receive width out to >>> 4 kHz using the 2.7 kHz filter. If you attempt to transmit below 200 or >>> above 2800 Hz, power output will drop to zero. >>> >> >> Perhaps all of the data modes should be limited to 2.8 KHz of DSP >> bandwidth >> (or even 2 KHz). That's more than enough for any reasonable amateur data >> mode and will keep users from shooting themselves in the foot. >> >> >> > > _______________________________________________ > 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 > _______________________________________________ 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
