[Elecraft] K2 receiver problem
Hi list, got a K2 from another OM on my workbench. It's got a receiver problem and I just want to make sure I do the checks in the correct order and I'm looking for hints, if available! Thanks in advance! So here's the problem and what I want to do. It seems the receiver runs with "handbrake on". So the s-meter shows 3 bars without an antenna but the rf gain is fully clockwise. I can reduce signals to zero (using RF gain) with this K2 which I can't using my own K2. So mine has a higher sensitivity. Any idea what's wrong? What I want to do: - s-meter alignment - I.F. amplifier alignment - (maybe band pass alignment) - signal tracing receiver and synthesizer Kind regards Gerhard DH3FAW ___ Gesendet von Yahoo! Mail - Jetzt mit 1GB Speicher kostenlos - Hier anmelden: http://mail.yahoo.de ___ 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 receiver problem
Did You try to listen with AGC off? - Original Message - From: "GS" <[EMAIL PROTECTED]> To: "Mailingliste Elecraft" Sent: Wednesday, November 09, 2005 10:58 AM Subject: [Elecraft] K2 receiver problem > Hi list, > > got a K2 from another OM on my workbench. It's got a > receiver problem and I just want to make sure I do the > checks in the correct order and I'm looking for hints, > if available! > > Thanks in advance! > > So here's the problem and what I want to do. It seems > the receiver runs with "handbrake on". So the s-meter > shows 3 bars without an antenna but the rf gain is > fully clockwise. I can reduce signals to zero (using > RF gain) with this K2 which I can't using my own K2. > So mine has a higher sensitivity. > > Any idea what's wrong? > > What I want to do: > - s-meter alignment > - I.F. amplifier alignment > - (maybe band pass alignment) > - signal tracing receiver and synthesizer > > Kind regards > > Gerhard > DH3FAW > > > > > > > > ___ > Gesendet von Yahoo! Mail - Jetzt mit 1GB Speicher kostenlos - Hier anmelden: http://mail.yahoo.de > ___ > 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] KNB2 trouble...
Hi all! I´ve just finished installation of the KNB2 into my K2. When tapping the "NB-button" on the K2, the display shows "Not Inst". I have re-examined the KNB2 board. U3 is installed/soldered correctly and as far as I can see no other components are installed incorrectly or backwards. I have also made a few measurements on P12 on the KNB2 board and on U3, where pin 1 measures 6.1 volts and pin 8 measures 0 Ohm´s so everything seems to be correct. The modifications on the K2 RF board in order to install the KNB2 module are made according to the instructons in the KNB2 manual. While examining the board, everything seems to be correctly done without any solder bridges. Still the display shows "Not Inst" while tapping the NB-button. Any suggestions? Regards, Hans / LA2MOA K2 #4896 ___ 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] KNB2 trouble...
Hans, The Not Inst message means only one thing - the KNB2 is not communicating with the K2 MCU. That comunication occurs over the Auxbus line. That signal is present at pin 7 of the KNB2 connector. I suggest that you check for continuity (and shorts) from the K2 Control board MCU pin 40 to the KNB2 U3 pins 3 and 4 - you should find about 570 ohms (100 on the control board plus 470 on the KNB2). If you find anything different than that, check the path against the schematics to find the source of the problem. 73, Don W3FPR > -Original Message- > I´ve just finished installation of the KNB2 into my K2. When tapping > the "NB-button" on the K2, the display shows "Not Inst". I have > re-examined the KNB2 board. U3 is installed/soldered correctly and as > far as I can see no other components are installed incorrectly or > backwards. I have also made a few measurements on P12 on the KNB2 > board and on U3, where pin 1 measures 6.1 volts and pin 8 measures 0 > Ohm´s so everything seems to be correct. > > The modifications on the K2 RF board in order to install the KNB2 > module are made according to the instructons in the KNB2 manual. > While examining the board, everything seems to be correctly done > without any solder bridges. > > Still the display shows "Not Inst" while tapping the NB-button. > ___ 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 - Why Not?
First I must emphasise that I am *not* an Elecraft junky - junkies check Elecraft's web page when asked by the XYL for a new washing machine 'just in case'. But I have just finished the KX-1 and am *more* than impressed. And I really enjoyed building it (no smoke, flames or burnt fingers). Question: just how good is the K1's receiver? I am thinking about taking a radio to the Isle of Man with me when I go there on holiday (I am also GD4ELI). Also I travel a bit to Finland visiting customers. The K1 does look very attractive, easy to pack, add a simple PSU / 3Ah batteries, Kent paddles, nice pole and I am off. But I have the KX-1 - so I don't need the K1 as well - or do I? But I haven't had as much fun in the last 20 years as I did building the KX-1. Oh dear :-) Simon Brown --- www.hb9drv.ch www.laax.ch ___ 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] OT: C.A.T. or Cat (meow)?
Happiness is a K2 on 40M CW! Thanks for sharing Steve! 73, 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
RE: [Elecraft] K2 receiver problem
Gerhardt, It sounds like the AGC Threshold is not set properly. I would proceed by first checking the alignment of the bandpass filters in Transmit mode (at 2 watts) and then set the AGC Threshold for optimum receiver sensitivity - with no antenna connected and AF and RF Gains set to max, adjust for the highest voltage at Control Board U2 pin 5 which yields no change in the audio noise when switching the AGC between OFF and ON. That will usually result in a voltage in the range of 3.65 to 3.8 volts at U2 pin 5. Set the S-meter end points (CAL S Hi and CAL S-Lo) after setting the threshold. If that does not cure the problem, then look for a problem in the IF receive chain - that will be where the signal tracing is required, follow the p[rocedure for receiver signal tracing in the Troubleshooting appendix of the K2 manual. 73, Don W3FPR > -Original Message- > > got a K2 from another OM on my workbench. It's got a > receiver problem and I just want to make sure I do the > checks in the correct order and I'm looking for hints, > if available! > > Thanks in advance! > > So here's the problem and what I want to do. It seems > the receiver runs with "handbrake on". So the s-meter > shows 3 bars without an antenna but the rf gain is > fully clockwise. I can reduce signals to zero (using > RF gain) with this K2 which I can't using my own K2. > So mine has a higher sensitivity. > > Any idea what's wrong? > > What I want to do: > - s-meter alignment > - I.F. amplifier alignment > - (maybe band pass alignment) > - signal tracing receiver and synthesizer > > Kind regards > > Gerhard > DH3FAW > ___ 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 - Why Not?
You need both, Simon... I could not sleep at night till I got both!! Paul, KD3JF --- "Simon Brown (HB9DRV)" <[EMAIL PROTECTED]> wrote: > First I must emphasise that I am *not* an Elecraft > junky - junkies check > Elecraft's web page when asked by the XYL for a new > washing machine 'just in > case'. But I have just finished the KX-1 and am > *more* than impressed. And I > really enjoyed building it (no smoke, flames or > burnt fingers). > > Question: just how good is the K1's receiver? I am > thinking about taking a > radio to the Isle of Man with me when I go there on > holiday (I am also > GD4ELI). Also I travel a bit to Finland visiting > customers. > > The K1 does look very attractive, easy to pack, add > a simple PSU / 3Ah > batteries, Kent paddles, nice pole and I am off. But > I have the KX-1 - so I > don't need the K1 as well - or do I? > > But I haven't had as much fun in the last 20 years > as I did building the > KX-1. Oh dear :-) > > Simon Brown > --- > www.hb9drv.ch www.laax.ch > > ___ > 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 > Paul Gates, KD3JF K1 #0231 KX1 #1186 XG1 __ Start your day with Yahoo! - Make it your home page! http://www.yahoo.com/r/hs ___ 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 receiver problem
Hello Gerhard, First, do the AGC threshold adjustment (instructions located at end of Assembly, Part I in the manual) Then do the S-Meter Alignment, the instructions of which follow the AGC threshold adjustment instructions. It sounds like the AGC is set a bit too aggressively at the moment. 73, Dale WA8SRA GS wrote: Hi list, got a K2 from another OM on my workbench. It's got a receiver problem and I just want to make sure I do the checks in the correct order and I'm looking for hints, if available! Thanks in advance! So here's the problem and what I want to do. It seems the receiver runs with "handbrake on". So the s-meter shows 3 bars without an antenna but the rf gain is fully clockwise. I can reduce signals to zero (using RF gain) with this K2 which I can't using my own K2. So mine has a higher sensitivity. Any idea what's wrong? What I want to do: - s-meter alignment - I.F. amplifier alignment - (maybe band pass alignment) - signal tracing receiver and synthesizer Kind regards Gerhard DH3FAW ___ Gesendet von Yahoo! Mail - Jetzt mit 1GB Speicher kostenlos - Hier anmelden: http://mail.yahoo.de ___ 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] Moderation?
I sent the following to the list "owner" and did not receive the coutesy of a response. I attempted to send the following message to the Elecraft list in response to a query. It never showed up on the list, although I attempted twice. I never received a "rejected" or "moderated" notice. Am I being censored for some reason? > Clint Sprague wrote: > >> Heard a bunch of stations last nite on 40CW calling >> CQ sp test >> exchange was state & power(w) >> I searched all the contest listing but couldn't find >> a contest that was being run at this time. >> Anyone know what contest this was, and where I can >> find a good webpage listing all contest activity? >> >> 73, >> Clint >> WS1V >> > > You heard the Spartan Sprint, held the first Monday of every month by the Adventure Radio Society. > > For QRP Contests, check Ken, N2CQ's page: > http://www.amqrp.org/contesting/contesting.html > > -- _ _ _ _ _ / \ / \ / \ / \ / \ John L. Sielke ( W ) ( 2 ) ( A ) ( G ) ( N ) http://w2agn.net \_/ \_/ \_/ \_/ \_/ "CRUSTY OLD CURMUDGEON - AND PROUD OF IT!" ___ 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: Moderation?
Hi John, No, you are not being moderated. :-) We frequently do not reply to list list owner emails for 24 hours or more. What was the content of the reject message? Can you forward it to me? It likely was an automatic reject from the qth.net server thinking your email server is sending spam.When an ISP's mail server gets flagged as a spamming site (which happens when any user's PC is hijacked by a virus) you can be blocked. It usually clears the block in a day or less. If you continue to be blocked send your email to [EMAIL PROTECTED] and he will forward it to the list. I'll check out the message and let you know if that was the problem. 73, Eric _..._ W2AGN wrote: I sent the following to the list "owner" and did not receive the coutesy of a response. I attempted to send the following message to the Elecraft list in response to a query. It never showed up on the list, although I attempted twice. I never received a "rejected" or "moderated" notice. Am I being censored for some reason? > Clint Sprague wrote: > >> Heard a bunch of stations last nite on 40CW calling >> CQ sp test >> exchange was state & power(w) >> I searched all the contest listing but couldn't find >> a contest that was being run at this time. >> Anyone know what contest this was, and where I can >> find a good webpage listing all contest activity? >> >> 73, >> Clint >> WS1V >> > > You heard the Spartan Sprint, held the first Monday of every month by the Adventure Radio Society. > > For QRP Contests, check Ken, N2CQ's page: > http://www.amqrp.org/contesting/contesting.html > > ___ 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: Moderation-Disregard
Although I never did hear from Brian, my query to Eric, which I also addressed to the list, apparently made it, so it was a temporary thing. Not sure why, but remember, just because you're paranoid doesn't mean they're NOT out to get you." :-) Anyway, Cliff's question did get answered. -- _ _ _ _ _ / \ / \ / \ / \ / \ John L. Sielke ( W ) ( 2 ) ( A ) ( G ) ( N ) http://w2agn.net \_/ \_/ \_/ \_/ \_/ "CRUSTY OLD CURMUDGEON - AND PROUD OF IT!" ___ 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
Fw: [Elecraft] KIO2
Hi fellows. Can't manage to communicate between computer and K2. Through control program or HyperTerminal verified that serial port is functional on the computer ( Win XP ). Can hear Q1s signal loud. Here are some voltage measurements made this morning. U1-1 14.12 shud be 14 U1-2 -1.3mv".1 U1-3 13.65 "14 U1-4 -5.4mv" .1 U1-5 -.017mv " -8 U1-6 -2.38" .1 U1-7 13.66 " 14 U1-8 -3.13" -9 U1-9 0" 0 U1-10 0 " 0 U1-11 4.89 " 5 U1-12 4.98 " 5 U1-13 4.89 " 4.5 U1-14 0 " 0 U1-15 4.89 " 4.5 U1-16 4.89 " 5 Wonder if getting voltage on pin 8 would to proper level would cure the problem? J1-1 0shud be0 2 -.011 " -8 3 -2.36 " .1 46.27"4.5 50 " 0 65.62" 5.5 70 " 0 814.12 "14 98.18 "8 Voltages on J2 are in limits. Any help would be greatly appreciated. Thanks Gil K8EAG ___ ___ 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] K1 - Why Not?
>First I must emphasize that I am *not* an Elecraft junky. That's how it starts. I built the KX1 first and then the K2 and then the K1. Soon I looked around at all the other test gear that I bought from Elecraft and now I'm not too sure how much gear you can buy before qualifying as an Elecraft junky. >Question: just how good is the K1's receiver? Very good - better filters and I found the K1 a bit more sensitive. Of course this is really not the point, is it? I asked the very same question here pretty much convinced I was going to buy the K1 anyway. I don't regret it one bit. The K1 is a great little radio and I often use it just for a change of pace. The KX1, however, is the radio that goes with me most often. It's just too easy to take it along with my Par End-Fed antenna and use it on a whim if there is a little time to kill. If you use the attachable paddles you have the ultimate in portability and you can even use the KX1 while standing up. Building, of course, is half the fun. Good Luck. Tom, AK2B p.s. Order it with the back light kit ___ 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 - Why Not?
The replies are flooding in (mainly private mail), so far the advice is split evenly between: [1] Yes, [2] No, [3] Therapy will not help. So do I build a K1 over the Christmas holidays or write more software? Or save my money for the K3 (DC to daylight)? Simon Brown --- www.hb9drv.ch www.laax.ch - Original Message - From: "Simon Brown (HB9DRV)" <[EMAIL PROTECTED]> First I must emphasise that I am *not* an Elecraft junky - junkies check Elecraft's web page when asked by the XYL for a new washing machine 'just in case'. But I have just finished the KX-1 and am *more* than impressed. And I really enjoyed building it (no smoke, flames or burnt fingers). [CHOP] ___ 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] KIO2
Gil, Yes, first concentrate on the low voltage at U1 pin 8 - be sure diodes D1, D2 and D3 are oriented properly and capacitor C8 is correctly 10 uf and properly soldered. If that does not bring the voltage up to somewhere between -6 and -12 volts, look at the oscillator components connected to Q1 (look on the schematic to identify which components). Once you get a reasonable negative voltage on U1 pin 8, check it again - be certain you have turned PORT ON in the K2 menu. There are only 2 signal lines (other than ground) that you need to be concerned with for communications with the computer - those are TXD and RXD, and you can ignore the remainder for the time being. Be certain the miniature inductors indicate continuity first. The computer will control the voltage on RXD (J1 pin 3 and U1 pin 6), so if that voltage is not correct blame the computer port or the cable. TXD (J1 pin 2 and U1 pin 5) on the other hand is controlled by U1 on the KIO2 board - it will be either a positive or a negative voltage greater than 3 volts (up to 15 is allowed), but should not be anywhere near zero volts. Whether it is positive or negative depends on the voltage at U1 pin 12 (either near zero volts or near 5 volts - and this signal originates at the K2 MCU). I hope that helps you locate the source of the problem. 73, Don W3FPR > -Original Message- > > > Hi fellows. Can't manage to communicate between computer and K2. > Through control program or HyperTerminal verified that serial port is > functional on the computer ( Win XP ). > Can hear Q1s signal loud. > Here are some voltage measurements made this morning. > U1-1 14.12 shud be 14 > U1-2 -1.3mv".1 > U1-3 13.65 "14 > U1-4 -5.4mv" .1 > U1-5 -.017mv " -8 > U1-6 -2.38" .1 > U1-7 13.66 " 14 > U1-8 -3.13" -9 > U1-9 0" 0 > U1-10 0 " 0 > U1-11 4.89 " 5 > U1-12 4.98 " 5 > U1-13 4.89 " 4.5 > U1-14 0 " 0 > U1-15 4.89 " 4.5 > U1-16 4.89 " 5 > Wonder if getting voltage on pin 8 would to proper level would > cure the problem? > J1-1 0shud be0 > 2 -.011 " -8 > 3 -2.36 " .1 > 46.27"4.5 > 50 " 0 > 65.62" 5.5 > 70 " 0 > 814.12 "14 > 98.18 "8 > Voltages on J2 are in limits. > Any help would be greatly appreciated. > Thanks Gil K8EAG > ___ > ___ 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 - Why Not?
You've given generously of your time writing software. Have a break and do something for yourself. Smell the flux and build a radio. Simon Brown (HB9DRV) wrote: So do I build a K1 over the Christmas holidays or write more software? <><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><> Nigel A. Gunn. 59 Beadlemead, Milton Keynes, MK6 4HF, England. Tel +44 (0)1908 604004 mobile +44 (0)7765 471661 e-mail [EMAIL PROTECTED] www http://www.ngunn.net Amateur radio stations G8IFF, KC8NHF Member of AMSAT-UK #182, ARRL, GQRP Club, QRPARCI, SOC #548, RAYNET Flying Pig #385, Dayton ARA #2128, AMSAT-NA LM-1691, MKARS <><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><> ___ 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 - Why Not?
Well, the selfish answer is that you should write code, which would benefit all of us ;-) But considering the season, I think we should all give you the gift of time to relax and build a K1. 73, Larry N8LP Simon Brown (HB9DRV) wrote: The replies are flooding in (mainly private mail), so far the advice is split evenly between: [1] Yes, [2] No, [3] Therapy will not help. So do I build a K1 over the Christmas holidays or write more software? Or save my money for the K3 (DC to daylight)? Simon Brown --- www.hb9drv.ch www.laax.ch - Original Message - From: "Simon Brown (HB9DRV)" <[EMAIL PROTECTED]> First I must emphasise that I am *not* an Elecraft junky - junkies check Elecraft's web page when asked by the XYL for a new washing machine 'just in case'. But I have just finished the KX-1 and am *more* than impressed. And I really enjoyed building it (no smoke, flames or burnt fingers). [CHOP] ___ 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] Re: K1 - Why Not?
So the suggestions are now: [1] Yes, [2] No, [3] Therapy will not help, [4] Get high on solder! I like [4] :-) Simon Brown --- www.hb9drv.ch www.laax.ch - Original Message - From: "G8IFF/KC8NHF" <[EMAIL PROTECTED]> You've given generously of your time writing software. Have a break and do something for yourself. Smell the flux and build a radio. ___ 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 Strangeness on 160
Over the past month or so, I've been taking my K2 (#4119) to a remote mountaintop cabin for R&R with my XYL. This location is quite remote and previous visits seemed to be very RFI-quiet on the other bands, so I decided to install a Beverage on October 12 and try listening on 160. It is ~800' long and oriented NE to Europe. I have no transmit antenna but was just curious to see how Top Band sounded from an extremely RFI-quiet location. When I first listened, I was surprised to hear what sounded like a BCI carrier image on 1837.5. With LCW mode selected, the K2 acted like it was in UCW when tuning past the carrier. My K2 was powered by a 7AH SLA, so the only connection to it was the Beverage feed line. I thought possibly I was getting some common mode, so on my latest trip I took along a section of coax with about 50 ferrite beads to attenuate any common mode. This did not help but I was even further surprised to copy audio from the BCI speaking in German! Also, I heard another image below 1810. Both of these were well before my sunset so I'm assuming they were images from somewhere higher in frequency. I should have listened long enough to get an ID but was more interested in listening for DX at the time. Has anyone ever seen anything like this on 160? While listening with the K2, I also noticed the following: 1. The image was worse on the RX port than on the Main port. I did use a 50 ohm termination on the unused antenna port when checking. 2. I noticed with only the 50 ohm termination and using battery power, I heard a drifty warbling tone that reminded me of switching power supply birdies. It is not very strong, but noticeable with both RF and AF gain near maximum. I wondered it it could have been my battery, so I tried a linear supply when I got home but I still hear the same sound. Again, it sounded slightly worse when listening on the RX antenna port than the Main port, although it was clearly audible in both. This is something that can probably be verified in any unit since it seems to be internal to the K2. 3. I have a KAF2 in my K2, and noticed when the clock is selected I hear a "chuff...chuff...chuff" sound which is in synch with the KAF2's clock update. This is not a big deal since I can easily turn it off, but I wonder if anyone has found where to add a ferrite to eliminate it? All of these things would not normally be audible, but I was listening near the K2's noise floor on an extremely quiet band. 160 was amazing from this location since I heard F5IN at 2028z yesterday, which was nearly 2 hours before my sunset. I went on to log nearly 50 DX stations including RA6AX at 2121z who is very deep into EU Russia (near Asia), about 1 hour before my sunset. My K2 seems to work well but I am wondering if there is something that can cure the things I've noticed above. 73, Bill W4ZV ___ 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] KIO2
Might there be a short on the output of U1 pin 5? This is a TX output from the driver chip, and even with the negative supply being low, it should not be that close to zero, especially with the input at the high rail. I would suggest looking for a short across C3, L2 to ground, or even from U1 pin 5 to ground. L2 may be suspect after you find the short, but it normally fails open, which means the connector side is probably OK. It is also possible that U1 is problematic, but I would look for the short first. When you correct the short, the negative supply should return to a more reasonable value since it will have a smaller load to drive. On Nov 9, 2005, at 8:29 AM, Gilbert J Cross wrote: Hi fellows. Can't manage to communicate between computer and K2. Through control program or HyperTerminal verified that serial port is functional on the computer ( Win XP ). Can hear Q1s signal loud. Here are some voltage measurements made this morning. U1-1 14.12 shud be 14 U1-2 -1.3mv".1 U1-3 13.65 "14 U1-4 -5.4mv" .1 U1-5 -.017mv " -8 U1-6 -2.38" .1 U1-7 13.66 " 14 U1-8 -3.13" -9 U1-9 0" 0 U1-10 0 " 0 U1-11 4.89 " 5 U1-12 4.98 " 5 U1-13 4.89 " 4.5 U1-14 0 " 0 U1-15 4.89 " 4.5 U1-16 4.89 " 5 Wonder if getting voltage on pin 8 would to proper level would cure the problem? J1-1 0shud be0 2 -.011 " -8 3 -2.36 " .1 46.27"4.5 50 " 0 65.62" 5.5 70 " 0 814.12 "14 98.18 "8 Voltages on J2 are in limits. Any help would be greatly appreciated. Thanks Gil K8EAG ___ ___ 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 -Jack Brindle, W6FB === ___ 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 - Why Not?
I can quit any time -- I just don't want to. Leigh / WA5ZNU On Wed, 9 Nov 2005 6:11 am, Simon Brown (HB9DRV) wrote: First I must emphasise that I am *not* an Elecraft junky ___ 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 Strangeness on 160
Bill, Congratulations on getting the beverage installed - I want to try one here myself, but I will have to keep the length to less than 500 feet if I point it toward Europe - that 800 ft beverage should hear quite well. If I were in your shoes, my first attempt would be to put a parallel tuned circuit tuned to 160 across the antenna terminals (the feedline to the beverage). I know it is not the ideal solution, but if your beverage interest is only in 160 (and not 80 and 40 too), the tuned circuit shoud reduce any out of band energy significantly. I just wonder how much energy that BC station is putting onto your beverage. Also it could be rectification in the antenna connections that is causing those occurrances - overlook nothing, especially the connections in the antenna itself. It would be interesting to try another receiver on that beverage to see if anything similar appears. What I am saying is that the problem may be somewhere outside the K2. 73, Don W3FPR > -Original Message- > > Over the past month or so, I've been taking > my K2 (#4119) to a remote mountaintop cabin for > R&R with my XYL. This location is quite remote > and previous visits seemed to be very RFI-quiet on > the other bands, so I decided to install a Beverage > on October 12 and try listening on 160. It is ~800' > long and oriented NE to Europe. I have no transmit > antenna but was just curious to see how Top Band > sounded from an extremely RFI-quiet location. > > When I first listened, I was surprised to hear > what sounded like a BCI carrier image on 1837.5. > With LCW mode selected, the K2 acted like it was > in UCW when tuning past the carrier. My K2 was > powered by a 7AH SLA, so the only connection to > it was the Beverage feed line. I thought possibly I > was getting some common mode, so on my latest > trip I took along a section of coax with about 50 > ferrite beads to attenuate any common mode. > This did not help but I was even further surprised > to copy audio from the BCI speaking in German! > Also, I heard another image below 1810. Both of > these were well before my sunset so I'm assuming > they were images from somewhere higher in frequency. > I should have listened long enough to get an ID but > was more interested in listening for DX at the time. > Has anyone ever seen anything like this on 160? > > While listening with the K2, I also noticed the > following: > > 1. The image was worse on the RX port than > on the Main port. I did use a 50 ohm termination > on the unused antenna port when checking. > > 2. I noticed with only the 50 ohm termination and > using battery power, I heard a drifty warbling tone that > reminded me of switching power supply birdies. It > is not very strong, but noticeable with both RF and > AF gain near maximum. I wondered it it could have > been my battery, so I tried a linear supply when I > got home but I still hear the same sound. Again, it > sounded slightly worse when listening on the RX > antenna port than the Main port, although it was > clearly audible in both. This is something that > can probably be verified in any unit since it seems > to be internal to the K2. > > 3. I have a KAF2 in my K2, and noticed when the > clock is selected I hear a "chuff...chuff...chuff" > sound which is in synch with the KAF2's clock > update. This is not a big deal since I can easily > turn it off, but I wonder if anyone has found where > to add a ferrite to eliminate it? > > All of these things would not normally be > audible, but I was listening near the K2's noise floor > on an extremely quiet band. 160 was amazing from > this location since I heard F5IN at 2028z yesterday, > which was nearly 2 hours before my sunset. I went > on to log nearly 50 DX stations including RA6AX at > 2121z who is very deep into EU Russia (near Asia), > about 1 hour before my sunset. > > My K2 seems to work well but I am wondering > if there is something that can cure the things I've > noticed above. > > 73, Bill W4ZV > > ___ 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] OT: C.A.T. or Cat (meow)?
On Tue, 2005-11-08 at 10:02 -0600, Steven Pituch wrote: > I think Elecraft now has a mascot. He's even the right colour! ___ 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 Strangeness on 160
Hi Don, At 02:47 PM 11/9/05, you wrote: I just wonder how much energy that BC station is putting onto your beverage. I neglected to say the strongest image (German language) was lighting 1 or 2 K2 meter lights with preamp on (no external preamp in use). I could hear it with all 3 Preamp/Attenuator settings but of course it got weaker when switching through. Also it could be rectification in the antenna connections that is causing those occurrances - overlook nothing, especially the connections in the antenna itself. My ground rods were fairly short so I may try changing them if I hear the image on another rig. It would be interesting to try another receiver on that beverage to see if anything similar appears. What I am saying is that the problem may be somewhere outside the K2. That's my next step but my Orion is a little bulkier and needs a real power supply. I'm also curious to know if anyone has heard the warbling sound (below) which must be internal to my K2. I'm trying to understand if that is a generic problem or unique to my K2 on 160. I forgot to add that the tone is only at discrete frequencies as you tune across 160, and it seems to wander around like a switching power supply birdie, i.e. it is not at the same frequency every time I check it. 73, Bill W4ZV > 2. I noticed with only the 50 ohm termination and > using battery power, I heard a drifty warbling tone that > reminded me of switching power supply birdies. It > is not very strong, but noticeable with both RF and > AF gain near maximum. I wondered it it could have > been my battery, so I tried a linear supply when I > got home but I still hear the same sound. Again, it > sounded slightly worse when listening on the RX > antenna port than the Main port, although it was > clearly audible in both. This is something that > can probably be verified in any unit since it seems > to be internal to the K2. ___ 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] WA3WSJ: Polar Bear # 1 First Contact Gift!
Hello all, The Pulpit Rock Polar Bears will again be on the prowl for contacts. On Sunday, November 13, 2005, a group of Polar Bears otherwise known as hams, will meet on the AT in PA. Pulpit Rock sits at an elevation of 1582' in the Blue Mountains just above Hamburg, PA. I will again hike the 2.5 miles up to Pulpit Rock. WA3WSJ, as usual, will hand out a gift to my FIRST contact. I started this two trips ago so here is the Polar Bear Gift this time. It's a museum quality replica of a polar bear claw. Yes it's beautiful and it's around 3.5 inches long! Boy, we polar bears need big claws to climb. I will also have your call sign engraved into the claw. This will be just an awesome gift! Please remember that this is a "museum quality" replica! So keep your ear out for WA3WSJ and if you're my first contact, it's yours FREE! Here's where to look for me: CW: 7.040; 14.060 PSK: 14.070 Remember to keep an ear or eye out for WA3WSJ! p.s. All you PSKers, If you make contact with me, I will send out a special PSK31 Pulpit Rock Polar Bear Certificate! So watch for the "small hump" on your screen as I will be using my PSK-20 rig at 3w output or so. This bear will do the hard work - now I need you to do the rest! 72, Ed, WA3WSJ ___ 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] K1 #2105 is up and running
Just finished my new K1. It works great! Tonight I will have a few QSOs with it, and tomorrow I will start building the antenna tuner. Thanks again Elecraft! 73, John, W2GW K2/100 #4970 - KAT100 KX1 #1258 K1 #2105 ___ 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: Moderation-Disregard
On Wed, 9 Nov 2005, W2AGN wrote: sure why, but remember, just because you're paranoid doesn't mean they're NOT out to get you." :-) Hearing the footsteps behind you is simply an advanced early warning system. Thom www.baltimorehon.com/Home of the Baltimore Lexicon www.tlchost.net/hosting/ Web Hosting as low as 3.49/month ___ 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] Elecraft KIO2
My thanks to Don Wilhelm and Jack Brindle. Yep, it turned out to be a short that was pulling J1-2 to ground. I had a couple of .01 caps and so cut them loose ( C3 & C6 ) . But still shorted. New Max1406 coming from Elecraft. After removing the IC the negative voltage on pin 8 was then a healthy -12v. Thanks again for steering me toward the problem Gil K8EAG ___ 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] K1 #2105 is up and running
John: You will love the little K1. I use my K1 more than my K2 believe it or not. 73, Don WA9TGT / Donnie Garrett / Muncie, IN ARCI #6447, ARS #1717, AmQRP, ECI-QRP #001 (Indiana) Drake 2B, R4A, R4B, K2 #3186, K1 #1806 LDG Z-11 Auto Tuner, 102' CF Zepp using glass doobies! www.wa9tgt.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] FS: KBT1 (int batt kit), KFL1-2 (40/80m), power supply
My K1 has been sold. The following are available: KFL1-2 (2 band board) for the K1 New/unbuilt, for 40/80 meters $45 includes shipping within U.S. KBT1 (internal battery kit) for the K1 New/unbuilt $32 includes shipping within U.S. Radio Shack linear/regulated power supply 13.8 VDC at 3 amps, continuous Mint and barely used. $25 plus shipping at actual cost (Works well with QRP K2 as well) --Andrew ___ 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] (no subject)
I do want your e-mails thanks Kenny _ FREE pop-up blocking with the new MSN Toolbar get it now! http://toolbar.msn.click-url.com/go/onm00200415ave/direct/01/ ___ 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] K1-4 FOR SALE
I HAVE A PRO BUILT K1-4 FOR SALE. JUST GOT MY K2 AND AM SELLING THE K1. COVERS 40, 30, 20, 15 HAS NOISE BLANKER AND THE BATTERY HOLDER. MANUAL AND ALL PAPER WORK. UNIT IS MINT. SERIAL NUMBER 01724. $350 OR BEST OFFER. THANKS 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
