[Elecraft] K2 results
I'm so strongly glad with the K 2 results during the CQWWCW Contest that I can not resit the pleasure to let the list know what I did, continents by continents ! I run QRP CW Mono Band and only Oceania was absent of the setup ! Why ??? Continent Statistics F5UL CQ WORLD WIDE DX CONTESTSingle Operator 29 Nov 2004 1544z 160 80 40 20 15 10 ALL percent CW North AmericaCW0 0 320 00 3212.4 South America CW0 06 0 006 2.3 Europe CW0 0 197 0 00 19776.4 Asia CW0 0 160 00 16 6.2 AfricaCW0 0 70 007 2.7 OceaniaCW0 0 00 000 0.0 Well anyway it was a real pleasure ! F5UL/Bob ___ 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] Dead Band Quiz
According to K1EA's cty.dat file, the following prefixes: IG9, IH9, IQ9L and IZ9, although the only one I've worked was IG9. These are Italian islands in Zone 33. Bob, N7XY ___ 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] K2 results
Congratulations Bob. Murphy struck here so could not get on much, but did manage a JA on 40m around 1100Z Sunday - strange conditions. Oceania also absent here, only KH6, VK and ZL on 40m. Fun to hear N.A. East Coast to West Coast coming through on 40m at whatever time I could listen, even at 1100Z ish. 73, GeoffGM4ESD - Original Message - From: F5UL [EMAIL PROTECTED] To: elecraft@mailman.qth.net Sent: Tuesday, November 30, 2004 7:30 AM Subject: [Elecraft] K2 results I run QRP CW Mono Band and only Oceania was absent of the setup ! Why ??? ___ 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] RE: Elecraft CW Net Report for November 29, 2004
40 Meters was really rough when the pactor station got on it wiped out everything here in Fl. I want to Thank Dan (WG4S)for the relay to Keven. By the way Kevin I did here you on early but lots of QSB here. You ranged from 599+ to nothing. But my antenna here is a ground mounted Butternut with 1 radial Temporary because of the hurricanes. This was my first time checking into the net. And the first time I checked into a CW net I must say it was a very interesting experience. It requires alot more focus than doing the 599 contests, Or just a Rag Chew. Lets just say I am impressed Thanks for having me on the net David KR4OW __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com ___ 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] re:K2 - Strange problem
Stewart G3RXQ wrote: I am wondering if any other K2 user has experienced the following. NO receive when NOT on transmit. VERY occasionally I get the my K2 stuck on what seems to be transmit. If I press the MODE button to select the VOX function the display shows SPCH 0.2 then returns to the frequency display with the mode (U or L) flashing. With no microphone connected and the POWER control fully ACW their is no received audio out of the speaker. Therefore one would think that the K2 is stuck on transmit. However, I am able to select other VOX delays, RIT, XIT etc. These functions are normally locked when on transmit with either VOX or PTT. If I power my K2 OFF then ON sometimes I can get the same problem, but more often than not the problem goes away. Because of the very intermittent nature of the fault it will be really difficult to track down. PTT operation always works fine. Well this has happened to me just once. On Friday evening I was downstairs and my station was all set up ready to start CQWW upstairs. I was aware of what seemed to be someone tuning up - seconds of tuning audio - but didn't bother to look in the shack. When I came up a bit later just before getting some pre-contest shuteye I found that the K2 had no audio and no signals. Not sure what else was wrong, but it may indeed have been in transmit mode. Panicking of the worst, I switched it off then on, and all seemed OK again. I did speculate that the audio stage had overheated from the tuning chap's loud audio and it needed a power up reset, but that is pure speculation. The K2 continued to work perfectly for the whole of the contest (40 hours of operating (!!) and the rig powered up right through to the end), but you can imagine it got the adrenalin going here As for the contest, running 5W QRP, I had 837 QSOs, 210 total band countries (77 countries overall) and 50 band zones. Claimed score is 298,062. 10m didn't really open and conditions were not that brilliant, but there was plenty of DX around to work. Mention has been made of abbreviated CW - A for 1, T for 0, and N for 9 are universal. U for 2 is less common but also used. EA8ZS was taking it to the limit and sending VV for 33 which is pushing it a bit as it sounded like 44 (but there are only 40 zones in CQWW!) and you already had to train your ear not to misread the S in his call as an I When using logging software it is academic as it puts in the correct zone for you anyway. Use of abbreviated numbers in contests with serial numbers causes no end of problems however... 73 Dave G3YMC http://www.davesergeant.com ___ 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] Simply Amazed - A Story of the K2
Ladies and Gents, I have been somewhat inactive for the last 8 months due to health issues with my wife and myself. Never grow old! My wife broke her leg and I have osteoarthritis that hampers my tower climbing let alone getting around home and work. Myt wife and I are in our 50s and still think we are in our 20s. So, it has been a discouraging year on the medical front. But, This weekend, I was doing a little hamming withe the K2/100 and the KAT100. What amazed me was the versatility of the KAT100. I screwed up this weekend by accidentally switching to Antenna 2. You can do that very easily and not know it. So, I got out the KAT100 book and started troubleshooting. After about 15 minutes (yea, I'm slow too), I discovered my mistake. It would work on all bands except 20 meters. Well, everytime I went from band to band it would switch in Ant 1 except on 20 where it went to Ant 2. Well, I was pleased with myself for figuring that out but then started reading more of the manual. I have not read the manual for quite some time. So, as I was re-reading the manual I saw that the KAT 100 is a simple LC tuner. Now, I've been reading on Eham recently about 1/2 wave antennas and also random wire antennas. So, I started playing around with the KAT 100 on my 160 meter Inverted-L. Now the Inverted-L is not perfect, but the KAT-100 matched it quickly. Then, hey this should work on 80 and 40 too. It did quite well too. Then I tried it on 30 meters and it worked like a champ. I have not put up antennas for the new WARC bands so it was nice to know that I have at least 30 meters to work with. I have not tried to match the Inverted-L on the higher bands because I was having to much fun have a QSO. The KAT100 is a great tuner...as I said the the subject lineI am simply amazed. Lee - K0WA ___ 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] K2 - Filters adjustement
Bob said: I used it after modification to inprove the filter rejection (positive) and it helped a lot. But I was not very glad with the results ! CW 1.0 - 0.7 - 0.4 - 0.2 LSB 2.4 - 2.0 - 1.8 - 1.6 USB 2.4 - 2.0 - 1.8 - 1.6 RTTY 1.8 - 1.5 - 1.0 - 0.6 Hi Bob, I use MixW too. I was using it with my TS850 with its nice 8.8 mHz 270 Hz filter for PSK31. With the MixW waterfall I could see that the Kenwood filter was pretty much about 300 Hz wide. It was a pretty nice setup for PSK31. I have an old K2 (s/n 402) that has not yet been upgraded with all the filter mods. I put the K2 in line with MixW and put in the 100 Hz wide CW filter. Note that I have not aligned this rig in 5 years. The 100 Hz K2 filter outperformed the 270 Hz filter in the TS850. I would say that the K2 filter at the nominal 100 Hz setting was about 175 Hz wide as judged by looking at the MixW waterfall and spectrum views. I'm sure using Spectromgram would give a better esult. I sold the TS850 to help pay for some K2 upgrades. So the K2 filtering stands up to and surpasses one of the better analog radios ever made. True - the filtering will not be IF Digital brick wall, but with the addition of the AF DSP unit, and the good BDR and IMD numbers that the K2 has, it should be tough to beat. Regards, Steve --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.802 / Virus Database: 545 - Release Date: 11/26/2004 ___ 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] purchase decision
I'm looking for a backup, portable, ares rig and have a few questions. 1 At low dc voltage, What is the power output of the k2/100? 2 Has anyone used the k2/100 on pactor III? Are the ssb filter widths an issue? 3 The stock radio has 10 memories? Is there a way to expand this? Thanks, Scott N2PEE ___ 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] Dead Band Quiz
IH9YMC 73, de Earl, K6SE ___ 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 2597
My upgraded K2 did battle in the WWDX CW portion, with an outboard RM auto-bandswitching amp. I used my recently completed K0SS (thanks Tom) kitted tuning indicator, and it SURE came in handy with the filters screwed down tight. I was very impressed with the capability of the K2 to hold its own in all the strong signals. I only got to play for about 4 hours, but the K2 performed very well, coupled with the Logger 32 software. Fun stuff! Now all I have to do is to figure out how to type during head copy! John K5MO ___ 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] Dead Band Quiz
Wait a minute -- the bands AREN'T dead??? -- oh,oh, better chck to see if the antenna is down! Tom WB2QDG OK Eric, I'll stay On Topic - Original Message - From: Art - W6KY [EMAIL PROTECTED] Date: Sunday, November 28, 2004 11:52 pm Subject: [Elecraft] Dead Band Quiz Even tho the bands are not dead, here is a good question. What is the Prefix for an Italian station located in Africa? Hint: Actual Italian call, starts with an I, No / 1st Correct answer wins an official W6KY weather forecaster. Hang it outside the shack. If it's Wet - It's raining If it's White - It's snowing If it's Stiff - It's Freezing If it's Moving - It's windy If it's Gone - you've been ripped off.. 73, Art W6KY ___ 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 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] CQ WW DX CW...and Elecraft K2/100 #3311
Well folks another contest weekend is gone... The K2 was excellent: Some 600+ QSOs with over 400 multipliers. Not bad for hunt and pounce, may have been a few more if 80 and 10 had been a bit livelier. I even managed a few 160M QSOs, with a less than efficient radiator... The K2 worked well with the N1MM logging software. I see there were a few K2 op's in the show.. hope all had fun! One item of note, while playing with the antennas (a voltage feed 40M Half Square) I noticed an interesting phenomenon. It seems that there is some sort of feedback, if the antenna isn't tuned properly. This causes the K2 to go into a keydown mode above about 50 Watts. You can escape it by lowering power or shutting the rig off. Not sure why this happens, but retuned the antenna and the problem ceased. Noticed when I tried to tune the antenna with a shack located tuner on 20M, the same situation occured. Any thoughts? Thanks for the excellent rig Elecraft! cheers, Julius n2wn ___ 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] Re: purchase decision [K2/100 as ARES/ermergency rig]
Hi Scott, Thanks for your interest in the K2/100. I'm sure you'll get many responses to your posting, but I thought I'd give you my perspective, too: I'm looking for a backup, portable, ares rig... I think you'll find the K2 well-suited to an ARES application. It's quite small, and weights just 5 pounds with the KPA100 module or the internal battery installed. Current drain is extremely low for a high-performance transceiver: less than 0.5 amp on receive with the KPA100 module installed. If you ever had to run from a battery and/or solar panel, you'd be on the air for a long time. The K2/100 also has a companion automatic antenna tuner (KAT100) that's quite rugged and can match a very wide range of ad-hoc or emergency antennas. The KAT100-1 (slim package) can be installed directly underneath the rig, forming a compact package. Another unique feature of the K2/100 is that it has two DC input jacks: an APP connector for the usual 20 amp supply, and a DC barrel jack for powering just the 15-watt basic radio. If you have a backup supply (say a small battery) connected to the barrel jack, and the 20 amp supply goes down (due to loss of mains, etc.), the rig will keep right on running at the 15-watt level. This is totally seamless -- you don't even have to unkey the mic. The LCD will flash NO PA P.S. (no PA power supply). 1 At low dc voltage, What is the power output of the k2/100? The basic K2 is unusual in that it's designed to provide stable operation from as low as 9 volts. Power will automatically roll back (due to the programmable current limit) from 15 watts to between 2 and 5 watts as you approach this lower voltage limit. When using the PA, a higher supply voltage is recommended (11 volts), but you'll be able to use the PA even at the end-of-life voltage for a gel-cell (around 10 to 10.5 V) in a pinch. The K2 has a built-in voltmeter for monitoring supply voltage, so it you suspect the voltage is low, you can check it periodically and adjust the POWER control downward manually. You might experiment with this ahead of time to gain some experience with low-voltage operation. 2 Has anyone used the k2/100 on pactor III? Are the ssb filter widths an issue? The K2 meets the turnaround times for Pactor, although I haven't used the rig in this mode myself. The SSB filter bandwidth should suffice (about 2.2 to 2.4 kHz). This bandwidth was selected to provide good punch when operating at low power. 3 The stock radio has 10 memories? Is there a way to expand this? There are actually 20 memories: one per band that saves the last VFO A/B setting on each, and 10 general-purpose memories. The modest number of memories reflects the K2's low-power/high-performance pedigree; the rig has a very efficient microcontroller that keeps internal RFI to a minimum as well as drawing just a few mA. You can use the memories for scanning, either continuously from VFO A to B, or for channel-hopping, e.g. among the five fixed frequencies of the 60 meter band. The VFO knob can even be programmed to channel hop manually, especially useful on 60 meters and with VHF transverters. If you control the radio from a computer, you can have unlimited memories, since the computer can store and retrieve them and program the radio. A number of radio-control and logging programs have been adapted to work well with the K2. 73, Wayne N6KR --- http://www.elecraft.com ___ 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] KPA-100 for sale
Hello... I have the above amplifier module kit, in unopened factory carton, for sale at $310 shipped UPS 2nd day air CONUS. I have had it for a year or so, so there may well be some updates for it. Thanks. 73 Dick, K5AND 770-844-7002 ___ 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] Control Board Strageness
My Christmas project of the K2 build got started early (s/n 4539). Here are the two problems I have right now: * Display LCD (i.e. text readout) is very dim. It's almost impossible to read with the backlight off. Everything displays as normal, but just very dim text. (The LED backlight comes right on and is great.) * When adjusting the pot on the control board (R1) for 3.80V per the alignment procedure during the checkout of the control board and display board, the most I can get is 3.6V. The measured and reported supply voltage is 14.7-14.8V and the current draw varies between 80 and 100 mA. Yes, I've checked the solder joints. First item I looked at. I was using a pretty bad DMM (since I started the build much sooner than I planned, I didn't have everything with me) but I *think* the resistance checks were all normal (I'm stealing a better DMM from work this weekend). Thanks in advance, tim -- Tim Cailloux W4EGT ___ 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] Dead Band Quiz - Winners - End of Thread
What is the Prefix for an Italian station located in Africa? Wolf, Bob and Earl are all winners and their W6KY Official Weather Forcasters are on the way. Thanks Eric for the bandwith for a lil holiday fun instead of questions like 'My K1 won't switch to 10 meters. Help!' 'How do I hook up my Heath QF-1 Q Multiplier to my K2?' Bob,N7XY really nailed it. They all count for 'Italy', 'Zone 33, and Africa. A triple hit...IH9P was on the CQWW this weekend... This must be IH9, I think. 73 Wolf, DL2WRJ According to K1EA's cty.dat file, the following prefixes: IG9, IH9, IQ9L and IZ9, although the only one I've worked was IG9. These are Italian islands in Zone 33. Bob, N7XY IH9YMC 73, de Earl, K6SE Art - W6KY [EMAIL PROTECTED] wrote:Even tho the bands are not dead, here is a good question. What is the Prefix for an Italian station located in Africa? Hint: Actual Italian call, starts with an I, No / 1st Correct answer wins an official W6KY weather forecaster. Hang it outside the shack. If it's Wet - It's raining If it's White - It's snowing If it's Stiff - It's Freezing If it's Moving - It's windy If it's Gone - you've been ripped off.. 73, Art W6KY ___ 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] C W question/Cut numbers
--- Doug Faunt, N6TQS [EMAIL PROTECTED] wrote: As I understand it, cut numbers are only used where there's no ambiguity. There is certainly ambiguity possible in callsigns, [...] But when giving a signal report or sending the zone as part of an simple contest exchange, cut numbers are certainly appropriate. And any CW operator should be aware of them. I agree completely. Of course, a long dah is not necessary in these situations, since the lack of ambiguity allows us to just send T for 0, A for 1, ..., and N for 9. But I guess that was the problem that the long dah was trying to conquer, that is, to allow cut numbers in ambiguous situations. And I'll bet it was the influence of Landline/American Morse proficiente who introduced that, since the long dah was an actual element (eg. L and 0 (zero)). Either way, I would nto advocate it in ambiguous situations. dt . ___ 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] C W question/Cut numbers
On Mon, Nov 29, 2004 at 01:29:57PM -0800, David Toepfer wrote: --- Doug Faunt, N6TQS [EMAIL PROTECTED] wrote: As I understand it, cut numbers are only used where there's no ambiguity. There is certainly ambiguity possible in callsigns, [...] But when giving a signal report or sending the zone as part of an simple contest exchange, cut numbers are certainly appropriate. And any CW operator should be aware of them. I agree completely. Of course, a long dah is not necessary in these situations, since the lack of ambiguity allows us to just send T for 0, A for 1, ..., and N for 9. But I guess that was the problem that the long dah was trying to conquer, that is, to allow cut numbers in ambiguous situations. And I'll bet it was the influence of Landline/American Morse proficiente who introduced that, since the long dah was an actual element (eg. L and 0 (zero)). Either way, I would nto advocate it in ambiguous situations. Of course, it is a bit tough to send a long dah with an electronic keyer, which may partially explain the increased use of T. ___ 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] Newest Elecraft WAS award earned
Congratulations to Jerry Ewell Sr., N4GE who receives the Elecraft Worked All States Award #38. Jerry used his K2 #1054 to reach all fifty states. Jerry, your award will be in tomorrow's mail! Thanks for applying. 73 de Larry W2LJ Your most humble Elecraft Awards Administrator. Please don't forget that in addition to the WAS Award, we still have the Century Award and the Elecraft Ragchewer's Club Award, also. Details can be found at the Elecraft Website. ___ 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] RE: K1 10 turn pot
I have an early K1 #00427. My tuning pot shaft over the years has got very loose. I have been looking at a pot in the Allied Electronics catalog that has a metal shaft with a metal bushing. Would there be any problem using this pot? Allen kn4ud ___ 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] RE: K1 10 turn pot
Hi I have done this on a number of K1's. I used a Bourns pot with a metal shaft. The part number from Mouser is 652-3540S-1-104. It cost about $15 with shipping. It has a much nicer feel than the stock pot and is more rugged if the knob takes a hit on the front. If you use a nut and lockwasher on the back rather than the plastic washer it will move the knob closer to the front panel. I think the knob looks better when mounted closer. Don Brown - Original Message - From: KN4UDmailto:[EMAIL PROTECTED] To: Elecraft@mailman.qth.netmailto:Elecraft@mailman.qth.net Sent: Monday, November 29, 2004 5:59 PM Subject: [Elecraft] RE: K1 10 turn pot I have an early K1 #00427. My tuning pot shaft over the years has got very loose. I have been looking at a pot in the Allied Electronics catalog that has a metal shaft with a metal bushing. Would there be any problem using this pot? Allen kn4ud ___ Elecraft mailing list Post to: Elecraft@mailman.qth.netmailto: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/elecrafthttp://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htmhttp://mailman.qth.net/subscribershtm Elecraft web page: http://www.elecraft.comhttp://www.elecraft.com/ ___ 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] QST Review of KAT100 and KDSP2 in Jan 2005 Issue
Elecrafters, For those who are ARRL members, you can see the review at the Members Only web page (http://www.arrl.org/members-only/). 73, Henry - K4TMC K2 #3137 ___ 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] Heil ProSet Plus with K2
FYI and FWIW - I use the Heil ProSet Plus! with my Orion. I ordered the on sale Heil Elecraft MD2 thinking it came with the adaptor for the 8 pin mic connector so I could use my ProSet Plus! with both rigs and get a spare mike for only $15 morewrong!The 8 pin connector is soldered onto the cable of the MD2. So if anyone else ordered an MD2 with the thought of doing the same thing they will be disappointed. I ordered the adaptor from Heil for $20. I then plugged the ProSet Plus! into the K2 and I see no difference between the output of my MD2 and the ProSet Plus! with either mike element selected...no mods needed in my K2 (good news!). Tom K2TA ___ 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] Highest power supply voltage for K2?
I see old messages about undercharging the K2's internal battery if you don't use more than 14VDC for the PS.I had a nice 15VDC 20W wall wart that I thought would make a perfect PS/charger for the K2. The trouble is while drawing 350ma in receive the K2 shows a supply voltage of 17.2 VDC. I turned off the K2 immediately and turned to the Elecraft group for advice. What is the absolute highest safe voltage you can pump into the K2 before you start overheating the regulators etc?Could I squeek by with 17.2 VDC without worrying about letting the smoke out of any of the internal componants? Tom K2TA ___ 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] K2: Control Board Strangeness; Low AGC threshold
Tim, I had a similar problem with my K2. I was not able to get the full 3.8 volts with the pot cranked all the way over. Search 'Low AGC threshold on the e-mail list archive for more info. I was getting full brightness on the LCD display. I'm certinally no expert, but sound like yuo may have a bad connection somewhere. When you bet the better DVM, check the input voltage to the 8v regulator. It should be same as the voltage at your power supply. Good luck, and 73, Mike, W8ENG - Original Message - From: Tim Cailloux [EMAIL PROTECTED] To: elecraft@mailman.qth.net Sent: Monday, November 29, 2004 10:28 AM Subject: [Elecraft] K2: Control Board Strangeness My Christmas project of the K2 build got started early (s/n 4539). Here are the two problems I have right now: * Display LCD (i.e. text readout) is very dim. It's almost impossible to read with the backlight off. Everything displays as normal, but just very dim text. (The LED backlight comes right on and is great.) * When adjusting the pot on the control board (R1) for 3.80V per the alignment procedure during the checkout of the control board and display board, the most I can get is 3.6V. The measured and reported supply voltage is 14.7-14.8V and the current draw varies between 80 and 100 mA. Yes, I've checked the solder joints. First item I looked at. I was using a pretty bad DMM (since I started the build much sooner than I planned, I didn't have everything with me) but I *think* the resistance checks were all normal (I'm stealing a better DMM from work this weekend). Thanks in advance, tim -- Tim Cailloux [EMAIL PROTECTED] W4EGT ___ 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 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] Built K2 and unbuilt KPA100 For Sale
I'm selling my K2, s/n 3155, along with an unbuilt KPA100 kit. K2 s/n 3155 is stock (no mods), and has the following options installed: KNB2 KAF2 KSB2 K160M I purchased K2 s/n 3155 along with the KPA100 kit in Dec. of 2002, and built it in early 2003.This K2 was built with the K2 toroid kit from Mychael, AA3WF. The unbuilt KPA100 includes the KPA100 toroid kit from Mychael. I'm selling the entire package for $1025 including shipping. I have previously built another K2 (s/n 1521) and a K1 (s/n 799). Email me if you are interested. 73 de Mike, W2VD ___ 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] Built K2 and unbuilt KPA100 For Sale
My email is w2vd(at)arrl(dot)net I'm selling my K2, s/n 3155, along with an unbuilt KPA100 kit. K2 s/n 3155 is stock (no mods), and has the following options installed: KNB2 KAF2 KSB2 K160M I purchased K2 s/n 3155 along with the KPA100 kit in Dec. of 2002, and built it in early 2003.This K2 was built with the K2 toroid kit from Mychael, AA3WF. The unbuilt KPA100 includes the KPA100 toroid kit from Mychael. I'm selling the entire package for $1025 including shipping. I have previously built another K2 (s/n 1521) and a K1 (s/n 799). Email me if you are interested. 73 de Mike, W2VD ___ 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 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] Highest power supply voltage for K2?
[EMAIL PROTECTED] writes: What is the absolute highest safe voltage you can pump into the K2 before you start overheating the regulators etc? - The K2 manual says 9 to 15 vdc I'd be inclined to believe them if you want to keep the smoke inside those components... Ron AC7AC ___ 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 - Strange Problem ?
I think that I have found the problem, but have yet to work out a solution. To combat the lack of TX audio system gain I have a 1 transistor pre-amp mounted on the microphone header plug on the front panel board. This gives about 9dB of gain which provides sufficient audio for the compressor IC and the VOX. The amplifier is supplied from the 5V pin on the header. This rail is the 5A supply which is used by the MCU logic, plus other functions. The amplifier only draws about 1mA, however because of noise on the 5A line, mainly from the LED bar graph I have had to heavily decouple the pre-amp supply to stop the noise from being superimposed on my speech. What I think is happening is that this decoupling is affecting the rise time of the 5A line which is used for the MCU reset amongst other things. I have tried reducing the value of decoupling. This seems to stop the strange problem, but I am back with the noise. It is a shame that there is no way to get at the +8V rail on the front panel board as that would be an ideal mic supply. The way things are looking I will have to put the pre-amp outside my K2 and power it separately. The only alternative seems to go back to shouting ! 73 Stewart G3RXQ ___ 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] Highest power supply voltage for K2?
Bob G3VVT wrote ...a string of 1N4000 series 1A diodes could bring down the voltage to what you require... I'm glad you mentioned it Bob. It's my favorite way to drop a DC supply a few volts down. I have four 10amp rectifiers here which would give me 2.4V drop..17.2 - 2.4 = 14.8. The wall wart is rated at 15VDC but as Don pointed out the regulation on these things is pretty poor and under no load I was experiencing 17VDC. Under a 1 amp load the voltage was 15.1. Since most of the time I'm not transmitting under load I was hesitant to apply it until I checked here. The manual that came with my K2 when discussing the output capacity of the PA stages states on page 102 of the Theory of Operation... The transmit strip is conservatively rated to provide excellent reliability and immunity to high SWR. The same push-pull final could be pushed to over 40W on the lower bands. This is what let me to believe there might be some leeway. I doubt they were talking about trying to draw 4 times as much current to get the 40W but to run it at a higher voltage than was in the specs. I just need something to keep the battery charged while I'm at the cabin. I didn't want to bring my 10AMP boat anchor supply so the wall wart was a small, though less than optimum, solution. I'll eventually add Don's smart charger hookup to help extend the life of the battery. Thanks to all who answered. 73 de Tom K2TA - Original Message - From: [EMAIL PROTECTED] To: [EMAIL PROTECTED] ; elecraft@mailman.qth.net Sent: Monday, November 29, 2004 9:29 PM Subject: Re: [Elecraft] Highest power supply voltage for K2? In a message dated 30/11/04 02:01:23 GMT Standard Time, [EMAIL PROTECTED] writes: What is the absolute highest safe voltage you can pump into the K2 before you start overheating the regulators etc? Most manufacturers seem to give 16V as the upper sustained voltage limit for DC input on 12V equipment. The 2SC1969 PA transistors are rated at this in their data sheets and the regulators seem to come out at 25V as their maximum input so should not represent a problem. Faced with the situation you have with 1.2V above the 16V normal limit a string of 1N4000 series 1A diodes could bring down the voltage to what you require. Normal forward voltage drop comes out somewhere near 0.6V per diode, so two in series would probably fit the bill. Used this technique to power a Sony 2001 SW broadcast radio I had in the Middle East for over 20 years needing 4.5VDC power source. Bob, G3VVT ___ 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
