Re: [Elecraft] KPA100 Power Malfunction
Don, You were spot on. The SWR Bridge diodes D16 and D17 had failed. The diodes arrived today in the mail, I replaced them and my K2 is up. Thank you very much for your help. 73, Ed - AD7GR K2 #6050 Don Wilhelm wrote: Lack of power control with the KPA100 installed normally points to a failure of the KPA100 wattmeter circuit. Start with replacing the 1N5711 diodes D16 and D17... If your KPA100 was working at one time and there is *any* possibility that you encountered a lightning surge, then D16 and D17 are the most likely suspects. ___ 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
[Elecraft] KPA100 Power Malfunction
When the KPA100 is not installed, my K2/QRP operates normally. However, with KPA100 installed I have no incremental power control and no lit LEDs on the K2 S/RF meter. The SWR is indicated to be 1:1 into an OHR RFL 100 Dummy Load. HiCur does flash on momentarily after switching to the 80 40 meter bands. I am using my straight key to key the K2... not TUNE. First test on 40Mtr band: Both Hi Current and Lo Current Power Supplies on: Requested power = .1 to 10w, power to dummy load = 20w Requested power = 11 to 110w, power to load = 110w With only Lo Current Power Supply on: Requested power = .1 to 15w, power to load = 10w I cycled DC power off/on: Requested power = .1, power to load = .3w Requested power = 10, power to load = 10 I backed off requested power: Requested power = .1, power to load = 10w I turned Hi Current Power Supply on: And raised requested power: Requested power = 20w, power to load = 110w Then backed off again: Requested power = 9.5w, power to load = 10w Band Initial Power readings after I raised (Mtr) Power requested pwr past about 1w. (With Hi and Lo Current Power Supplies on:) 160-15 0 20, 110 12, 10 03, 25 (With only the Lo Current Power Supply on:) 160-15 0 10, 10 12, 10 0 3, 3 (The lower power readings read when = 10W requested, the higher power readings read when 10W requested and the Initial Power is what I read just after switching bands) HiCur does flash on momentarily after switching bands. There are no INFO ### messages. My equipment for this test: OHR WM-2 (QRP) and Heathkit HM-2140 (QRO) watt meters and OHR RFL 100 and Heathkit Cantenna dummy loads. The testing steps during the KPA100 build checked out properly. I have double checked the solder joints and reworked those that I thought might have been questionable with no change in the (mis)behavior. I don't know if these findings are of any help to you... I would be glad to supply whatever readings as I may be able. Troubleshooting suggestions appreciated! Thanks, Ed - AD7GR K2 #6050 ___ 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
[Elecraft] T-Shirt Slogans
Elecraft - Raising the bar, again - K3 Elecraft K3 - The bar is raised. Elecraft K3 - The standard. Ed - AD7GR K2 #6050 ___ 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
[Elecraft] K2 6050 Built!
K2 #6050 with KDSP, KNB2, KSB2, K160RX AND KPA100 options is now up and running. I took my time in the build and it was great fun, however, as always, over far too soon. I had wanted to use Rework Eliminators boards (www.unpcbs.com) and although I came close to not installing them I did decide to go ahead with the build including the RE boards as part of the process. I am very glad that I did. I found the RE manual's instructions very easy to follow in conjunction with the K2 manuals. When I had a question regarding a RE component value they were quick to respond and help me... even though it turned out to be a problem with my measuring instruments. They have gone far out of their way to help. I especially thanked them ... for the definite sense of the fellowship of ham radio that I learned to love back in the 70's when I was first licensed. Nice fellows to work with. I also had a couple of difficulties with the K2 kit and needed to receive a replacement Tilt Bail and a length of speaker wire and they had the needed items in the mail to me immediately. Absolutely great service. My thanks to the friendly folks at Elecraft for a great kit and service... to Ron, AC7AC, for the Builder's Alert on Installing Trimmer Capacitors, to Gary, AB7MY, for the KPA100 Errata E-2 and to Scott, AH6KL, for sending the need parts out so quickly. With the exception of the tilt bail, speaker wire and the two files previously mentioned, I found that the difficulties I had with the kits were of my own misinterpretation of the instructions and very easily and quickly corrected. With the addition of the Reflector and the various K2 supporting websites one may not go wrong in choosing to build an Elecraft kit. I believe that the marriage of Elecraft K2 and Rework Eliminator boards is an excellent one. The RE boards have saved me time and eliminated unnecessary rework during the k2 assembly. What a great feeling to just unplug the RE board, plug in the Elecraft Option and have it work correctly the first time, every time... that really made it worthwhile. The only RE board still plugged in is the one for the K60XV option which I have not bought as yet.In using the RE boards the K2 definitely is Option Ready. Now to get this tired 62 year old mind wrapped around all those menu selections. g.I am sure I will have questions sometime. Great job everyone! Excellent products! I would do it again... and again. 73, Ed - AD7GR K2 #6050 ___ 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] N4PY
snip Wow, $55 initial, and $30/year? Ouch! Ham Radio Deluxe seems to run well and it's free for the download. Web page http://hrd.ham-radio.ch/ Ed - AD7GR K2 #6050 ___ 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
[Elecraft] K2 6050 is alive and well
Hi all, Since I posted its arrival I thought I'd follow it up with this announcement that another K2 is alive and well. I had no issues with the build except those of my own doing... i.e. not interpreting the instructions correctly. We just process things a bit differently and I had no difficulty bailing myself out. After I familiarize myself with the K2's operation I'll start working on the option kits I have waiting. Thanks to Ron, AC7AC, for the emailed Builder's Alert Installing Trimmer Capacitors.My wife guessed it's orientation rightly but I didn't.BTW... I still do not see it on the Builder's Alert web page. This is a lot of fun... this is a great kit. Thank you Elecraft for making it possible. Ed -AD7GR- K2 6050 ___ 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
[Elecraft] K2 Trimmers - Which flat side?
Folks, I have successfully reached my K2 Assembly, Part III, pg. 65, trimmer installation step. The red marked trimmers were no problem identifying the orientation. It looks like the 30 pF trimmers are different than were in the older kits and there is my difficulty: The 30pF trimmer caps (C32, C34, C44 C46) have two flat sides... a large flat and an opposing small flat and my question is... which is the correct flat for proper orientation? --I did not find this in the archive... I may not be phrasing my search properly.-- Thanks, Ed - AD7GR K2 6050 ___ 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
[Elecraft] K2 #6050 Arrived
My K2 and options arrived in yesterdays mail just three business days after having ordered it... very fast service... my thanks to Elecraft. I have updated the manuals with the Errata and am reading them cover to cover. Today to check in the parts. I love the kit process... to slowly savor every step. Even the S/N, 6050, has a nice ring to it. I also ordered and built the Rework Eliminators kit for the K2... ordered on Friday, here the following Monday! I had questions for them and they were very gracious and patient with me. As I told them, they went the extra mile and gave me the gift of the fellowship of ham radio that I learned to love back in the 70's when I was first licensed... I have confidence that their product will add to the pleasure of this build. It is very nice to be part of this at last! Ed - AD7GR K2 5060 ___ 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
[Elecraft] First Elecraft Kit
Greetings all. I have placed my first Elecraft kit order... a K2 plus lots of trimmings. The old heathkit-er in me rejoices and I look forward to joining you. Ed AD7GR ___ 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
