I agree, Jerry. I don't use my K2 for PSK. I use my xtal-controlled PSK20, and I have the exact symptoms as Les. I'll try your tip next time I'm on. Which may be awhile. I have been deeply immersed in PICs and SPICE (for unrelated reasons) and haven't been on for more than 2 or 3 QSOs since the end of April!
Eric KE6US -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of NR5A Sent: Friday, June 10, 2005 10:45 AM To: Lynn and Les; [EMAIL PROTECTED] Qth. Net Subject: Re: [Elecraft] Slight K2 Drift When on PSK31 I have ran across the same problem but I don't think its the K2. I believe its a software thing. When running the Digipan program click on Options and make sure AFC and Snap are not checked. When I did that it pretty much went away for me. Like I said I don't think its a K2 problem but would like to see comments on this also. Jerry - NR5A - South Dakota ----- Original Message ----- From: "Lynn and Les" <[EMAIL PROTECTED]> To: "[EMAIL PROTECTED] Qth. Net" <[email protected]> Sent: Friday, June 10, 2005 4:36 AM Subject: [Elecraft] Slight K2 Drift When on PSK31 > I have now operated K2 S/N 4751 for about a month and everything seems to > work pretty good. I am mainly a PSK and RTTY operator and I would like to > know if others have had the same experience about the K2 with PSK. > > The narrow band width with PSK requires a stable radio. I see sporatic cases > on receive where a station transmits a "waterfall" line and then stops to > receive a signal. When the station restarts transmitting again, the K2 > receiver has drifted about 1/3 the width of the average waterfall line. This > drift (10-20 HZ I think) requires me to reclick on the waterfall line to > recenter the cursor so Digipan 1.6 can continue to decode the "waterfall > line" information. Last night , I got a similar report on transmit as well. > The effect appears sporatic. Right now, this is an bother - not a fatal > defect, BUT my old ICOM 706MIIG never exhibited this drift . So has anybody > seen this effect before. Obviously, CW, SSB and RTTY seem unaffected by this > drift. > > * Is this drift normal for the K2? > > * If not, can I reposition the thermal sensor card (i.e., tilt it slightly) > to get better performance? > > * Also, at what power levels do most people run a barefoot K2 in PSK? (I get > slight heating of the heat sink (~100F) and I am thinking that the heat > effects the PLL)? > > 73, > > Les WA3SGZ > > _______________________________________________ > 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 _______________________________________________ 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
