[Elecraft] KSB2 Question
Hi All! I have subscribed to this list in the past when I was working on my K1-4 a few year back. I just recently broke down and bought a K2 (10 W) s/n 7164. I'm long overdue to get one, but I figured it was now or never. I am planning on using this rig as a CW only QRP radio. I am not even going to install the mic connector. I have some sheet metal I am going to use to cover the holes for the options I did not get. I am mostly a CW only operator (kind of strange for a 34 y/o), but I do like to listen to SSB when I am just messing around in my shack. I was wondering if the KSB2 option would be worthwhile to get, AND does it affect the K2's performance if you don't align it for transmit? Any feedback would be appreciated. Thanks 73, David, KC9EHQ K1-4 s/n 2051 K2 s/n 7164 (starting build soon!) __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KSB2 Question
David, If you are considering the KSB2, I would suggest you install it and the mic jack - it will be ready if you ever decide to try out some digital mode. 73, Don W3FPR On 5/29/2011 3:34 PM, David Dietrich wrote: Hi All! I have subscribed to this list in the past when I was working on my K1-4 a few year back. I just recently broke down and bought a K2 (10 W) s/n 7164. I'm long overdue to get one, but I figured it was now or never. I am planning on using this rig as a CW only QRP radio. I am not even going to install the mic connector. I have some sheet metal I am going to use to cover the holes for the options I did not get. I am mostly a CW only operator (kind of strange for a 34 y/o), but I do like to listen to SSB when I am just messing around in my shack. I was wondering if the KSB2 option would be worthwhile to get, AND does it affect the K2's performance if you don't align it for transmit? Any feedback would be appreciated. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KSB2 Question
At 12:34 PM 5/29/2011 -0700, you wrote: Hi All! I have subscribed to this list in the past when I was working on my K1-4 a few year back. I just recently broke down and bought a K2 (10 W) s/n 7164. I'm long overdue to get one, but I figured it was now or never. I am planning on using this rig as a CW only QRP radio. I am not even going to install the mic connector. I have some sheet metal I am going to use to cover the holes for the options I did not get. I am mostly a CW only operator (kind of strange for a 34 y/o), but I do like to listen to SSB when I am just messing around in my shack. I was wondering if the KSB2 option would be worthwhile to get, AND does it affect the K2's performance if you don't align it for transmit? Any feedback would be appreciated. Thanks 73, David, KC9EHQ K1-4 s/n 2051 K2 s/n 7164 (starting build soon!) Hi David' Aside from SSB the KSB2 module is required for the DATA mode. I also like CW ... but with low pwr PSK31 is a wonderful mode and personally wouldn't want to do without it. Jim, VE3CI __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] KSB2 Question
Hello Everybody. I've begun to look at my KSB2 kit. The parts are inventoried and the board is in the vise ... My question is regarding the current Rev. F. as compared to my Rev. D. I noticed that some component values are different, but the board layout looks the same. I assume that the values have been optimized. Is this an accurate assessment? Can I simply change the values to the Rev F values? Should I just stick with the Rev D values that originally came in my kit? My firmware is Ver 1.04. Thanks for the help. 73/72 Jeff - VA3JFF K2 #3375 KX1 #631 Canadian QRP Award: http://www3.sympatico.ca/wjhetherington/cqa.htm ___ 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
Re: [Elecraft] KSB2 Question
Off List Reply Follows - copied to the reflector Hi Jeff. I don't have the schematics in front of me but some of the crystal filter capacitors were changed in the later revisions to widen the response from about 2.1 KC (actually measured about 1.9 at 6 dB down points on mine) to about 2.4 KC. These caps are a part of the xtal lattice filter and are identified on the schematic as CA, CB, etc. The old standard was the approximate 2.1 kc width and the new standard is the 2.4 kc width (maybe it was 2.3 - something like that). As I recall, a couple of other changes were made - a couple of resistors and an electrolytic capacitor - and additionally, enhanced xtals were available and still are as matched sets. Just my 2 cents but I'd change the xtal lattice caps to the new values now during initial construction. Removing those caps is a real pain later - this from experience as I've done it a total of 3 times to get various widths. All in all, the 2.4 width is very nice! As for the matched xtal set, I did change out mine and noticed no difference at all. Others have reported that it did make a big difference. Hope that helps - 73 es have fun --Don N4HH K2/100/KAT100 #2028, etc, etc My question is regarding the current Rev. F. as compared to my Rev. D. I noticed that some component values are different, but the board layout looks the same. I assume that the values have been optimized. Is this an accurate assessment? Can I simply change the values to the Rev F values? Should I just stick with the Rev D values that originally came in my kit? Jeff - VA3JFF K2 #3375 KX1 #631 Canadian QRP Award: http://www3.sympatico.ca/wjhetherington/cqa.htm -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.300 / Virus Database: 265.8.3 - Release Date: 1/31/05 ___ 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
