[Elecraft] Newbie Question K2 CW Operation
I'm thinking of ordering a K2 but I have some questions that I cant find answered in the downloaded manual. 1. The lowest cw pitch note is 400hz (which I think most prefer) but the info I read in the manual states its best to use a pitch note between 500 to 600hz for best results. Does anyone have an idea why that is the case? 2. The manual states that the cw bandwidth can be selected from 200 to 2000 Hz. If you were receiving a solid S9 signal, when you tune through the signal is it possible to hear the other side of zero beat at any filter bandwidth? 3. If the DSP option is added does the audio DSP filter track the CW bandwidth selection. Or do you need to select them separately? I would appreciate any comments or input.Frank W7is - This mail sent through IMP: http://horde.org/imp/ ___ 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]Order your KX1 now
Hi All, Don't want to alarm you all, but I think we should be prepared. According to www.spaceweather.com there is a 320M wide asteroid heading our way on April 13, 2029, passing 30,000 km above the earth (closer than the geostationary satellites). Should we all equip ourselves with emergency communication facilities like the KX1 ? 73 Bryan G3AKF (to be GM3AKF after April 7, 2005) ___ 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] what should I hear using cw reverse vs
Unless I have it backwards, when you are tuning in on a signal "normal" CW will tune from the high side to zero beat, in reverse you'll start hearing the signal on the low side (ie the signal is at 7.025, you will start hearing it around 7.0243 at a high pitch) 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] agm battery info
There is a 75AH Unigy AGM battery offered through Hamcall that looks ridiculously inexpensive. http://hamcall.net/unigy.html Eric N0HHS ___ 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 Problem still exists, but some new measurements
Hi there, I'm still on page 43 in the process and I have now narrowed the problem area. You remember, I measured a negative voltage of 0.15V on J3+. Now: I removed Z1 and found the voltage measured at the collectors of Qs 1 and 2 to be -0.4V (J3+ is ok now). I don't know where it could come from. Shorting the collectors to ground via 1k resistor it takes 3 seconds to eliminate the voltage. I measure 0V. Removing the resistor it takes abt. 20 seconds for the voltage to go to -0.4V again. T2-4,5 are ok. The base of the transistors are ok, 0V. The emitters also, 0V. The body of T2 also has -0.4V. Any idea and testing procedures appreciated! Kind regards Gerhard Schwanz DH3FAW mailto:[EMAIL PROTECTED] http://www.gs-personal.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] what should I hear using cw reverse vs
Julius, You do have it backwards (assuming your BFOs are set normally). In CW mode, the pitch of the received signal becomes higher as you tune to a higher frequency. In CWr, the pitch goes lower as the tuned frequency goes higher. If you want a 'mental memo' you might think that in CWreverse, the signal pitch is the 'reverse' of the tuning direction. 73, Don W3FPR > -Original Message- > > Unless I have it backwards, when you are tuning in on > a signal "normal" CW will tune from the high side to > zero beat, in reverse you'll start hearing the signal > on the low side (ie the signal is at 7.025, you will > start hearing it around 7.0243 at a high pitch) > 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] Newbie Question K2 CW Operation
Frank, See answers in-line below: 73, Don W3FPR > -Original Message- > > I'm thinking of ordering a K2 but I have some questions that I > cant find answered in the downloaded manual. > > 1. The lowest cw pitch note is 400hz (which I think most prefer) but > the info I read in the manual states its best to use a pitch note > between 500 to 600hz for best results. Does anyone have an idea > why that is the case? -- The sidetone works just fine at 400 Hz - the components that shape the sidetone to a sine wave have been optimized for the 500 to 600 Hz range (the waveshaping components could be changed by juggling some component values). -- > > 2. The manual states that the cw bandwidth can be selected from 200 > to 2000 Hz. If you were receiving a solid S9 signal, when you tune > through the signal is it possible to hear the other side of zero > beat at any filter bandwidth? - There are 4 filter bandwidths available for each mode - each is adjustable from about 200 Hz to over 2000 Hz, so you decide which filter widths will work best for you. The K2 allows you to set the BFO separately for each filter width and each mode, and if properly set the opposite sideband will not be heard. - > > 3. If the DSP option is added does the audio DSP filter track the CW > bandwidth selection. Or do you need to select them separately? --- The DSP filter selection is independent of the IF filter selection. If you read further into the operation section of the manuals, you will discover that tapping the XFIL button selects the IF filter while pressing the AFIL button selects the DSP2 filter. Yes, both functions are on the same button - tapping the button results in a different function than pressing (holding it down for a bit) the same button. -- If that is not adequate clarification, please ask again. 73, Don W3FPR > ___ 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] agm battery info
It sure looks tempting except for that $51.00 shipping charge to Tucson. However, they also have a 25ah battery with free shipping for only $40.00. I just might go for that one because it would be a nice step up from my current 15ah battery. -- John K7SVV - Original Message - From: "Eric Ward" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Cc: Sent: Friday, February 04, 2005 6:37 AM Subject: Re: [Elecraft] agm battery info There is a 75AH Unigy AGM battery offered through Hamcall that looks ridiculously inexpensive. http://hamcall.net/unigy.html Eric N0HHS ___ 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 -- Checked by AVG Anti-Virus. Version: 7.0.300 / Virus Database: 265.8.5 - Release Date: 2/3/2005 -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.300 / Virus Database: 265.8.5 - Release Date: 2/3/2005 ___ 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] KPA100 Problem still exists, but some new measurements
Gerhard, That small negative voltage may be coming from the AC ripple on the '90-150 V' supply to the TR switch that is being coupled through the RF chokes and capacitors into the Q1 and Q2 collector circuit and then being rectified by the transistors themselves. If that is the case, it may not be a problem at all once you connect a +12 volt supply. Put an RF probe on the cathode of D13 and see how much RF voltage is present there (it would be at the approximate frequency of X1). 73, Don W3FPR > -Original Message- > > > Hi there, > > I'm still on page 43 in the process and I have now narrowed the > problem area. You remember, I measured a negative voltage of 0.15V on J3+. > > Now: I removed Z1 and found the voltage measured at the > collectors of Qs 1 and 2 to be -0.4V (J3+ is ok now). I don't > know where it could come from. Shorting the collectors to ground > via 1k resistor it takes 3 seconds to eliminate the voltage. I > measure 0V. Removing the resistor it takes abt. 20 seconds for > the voltage to go to -0.4V again. > > T2-4,5 are ok. The base of the transistors are ok, 0V. The > emitters also, 0V. The body of T2 also has -0.4V. > > Any idea and testing procedures appreciated! > ___ 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]Order your KX1 now
Bryan, Should we all equip ourselves with emergency communication facilities like the KX1 ? Perhaps we can try out some EAE (Earth-Asteroid-Earth) activity when it gets close. The first one to duck loses all multiplier points. hehe Tony G7IGG ___ 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] Newbie Question K2 CW Operation
On Feb 4, 2005, at 4:43 AM, frank wrote: I'm thinking of ordering a K2 but I have some questions that I cant find answered in the downloaded manual. 1. The lowest cw pitch note is 400hz (which I think most prefer) but the info I read in the manual states its best to use a pitch note between 500 to 600hz for best results. Does anyone have an idea why that is the case? Side tone is mainly a matter of preference. However, the lower the side tone, the greater the chances that the wider filters, which tend to be centered on the side tone, will extend to the other side of zero beat. With the widest filters, you can avoid or mitigate this by setting the side tone off-center, so that the filter skirts act on zero. Higher side tones make this easier and more effective. 2. The manual states that the cw bandwidth can be selected from 200 to 2000 Hz. If you were receiving a solid S9 signal, when you tune through the signal is it possible to hear the other side of zero beat at any filter bandwidth? As mentioned above, with the wider filters, set the side tone lower into the filter band pass so the skirts have an effect at zero. 3. If the DSP option is added does the audio DSP filter track the CW bandwidth selection. Or do you need to select them separately? The DSP and K2 filters are independent and must be set separately. I recall Lyle mentioning that he wished to have them linked, but there wasn't room in memory (or something) that made that not possible at this time. Perhaps in the future. Overall, you will find no real problem with this, and there are times when the ability to set the two filters separately is a decided advantage. best wishes, (and don't hesitate to get a K2 -- it's simply a wonderful piece of ham gear and a wonderful build), dave belsley, w1euy ___ 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] what should I hear using cw reverse vs
Don, Thanks, I think I just didn't write it clearly, or you explained it better. In CWr (I think about tuning during S&P in a contest), you go from a higher pitch sounding signal to a bass sounding signal tuning from the bottom of the band up. You might fill me in, and probably others, what is the advantage of CWr? Or is it like the sidetone frequency a preferential thing? I can see some use in a contest situation for it... Cheers, Julius n2wn --- W3FPR - Don Wilhelm <[EMAIL PROTECTED]> wrote: > Julius, > > You do have it backwards (assuming your BFOs are set > normally). In CW mode, > the pitch of the received signal becomes higher as > you tune to a higher > frequency. In CWr, the pitch goes lower as the > tuned frequency goes higher. > > If you want a 'mental memo' you might think that in > CWreverse, the signal > pitch is the 'reverse' of the tuning direction. > > 73, > Don W3FPR > > > -Original Message- > > > > Unless I have it backwards, when you are tuning in > on > > a signal "normal" CW will tune from the high side > to > > zero beat, in reverse you'll start hearing the > signal > > on the low side (ie the signal is at 7.025, you > will > > start hearing it around 7.0243 at a high pitch) > > 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] Newbie Question K2 CW Operation
frank wrote: 1. The lowest cw pitch note is 400hz (which I think most prefer) but the info I read in the manual states its best to use a pitch note between 500 to 600hz for best results. Does anyone have an idea why that is the case? The sidetone has the best sine-wave shape at about 500-600 Hz. with the unmodified K2. You can change a couple of components if you want to change it. The closer the sidetone is to a sine wave, the easier it is to use it for zero-beating. 2. The manual states that the cw bandwidth can be selected from 200 to 2000 Hz. If you were receiving a solid S9 signal, when you tune through the signal is it possible to hear the other side of zero beat at any filter bandwidth? When you set it up you position the BFO so that the signal is in the lower part of the passband so that you do not hear the other side of zero beat. 3. If the DSP option is added does the audio DSP filter track the CW bandwidth selection. Or do you need to select them separately? You need to select both the bandwidth and center frequency of the DSP separately. -- 73, Vic, K2VCO Fresno CA http://www.qsl.net/k2vco ___ 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: agm battery info
I'm no battery guru, but what about OPTIMA by Johnson Controls? http://www.optimabatteries.com 73, Don Hawkins - W7DAH ___ 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] Toroid T6 and Mobile Operation
04 FEB 05 Dear K2 Owners, Could anyone give me some advice on winding toroid T6, how critical is that the windings cross every ½ inch? I think I've got it pretty close, I mean it looks good and I tried to keep the wires from un-twisting while winding it around the toroid form. Also, has anybody out there operated their K2 mobile with any luck... the 15 Watt version. On some commercial radios, I have noticed some manufacturers use silicon on the toroids to keep them mechanically stable, is this OK? Thanks, Phil KG0NL ___ 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] KPA100 Problem still exists, but some new measurements
G'day, Did you have a light shining on the PA transistors? J3+ on my KPA100 had -0.18V. Apparently something to do with illumination of the PA's. Well noted by others. Regards, Mike VP8NO - Original Message - From: "Gerhard Schwanz" <[EMAIL PROTECTED]> To: Sent: Friday, February 04, 2005 10:42 AM Subject: [Elecraft] KPA100 Problem still exists, but some new measurements Hi there, I'm still on page 43 in the process and I have now narrowed the problem area. You remember, I measured a negative voltage of 0.15V on J3+. Now: I removed Z1 and found the voltage measured at the collectors of Qs 1 and 2 to be -0.4V (J3+ is ok now). I don't know where it could come from. Shorting the collectors to ground via 1k resistor it takes 3 seconds to eliminate the voltage. I measure 0V. Removing the resistor it takes abt. 20 seconds for the voltage to go to -0.4V again. T2-4,5 are ok. The base of the transistors are ok, 0V. The emitters also, 0V. The body of T2 also has -0.4V. Any idea and testing procedures appreciated! Kind regards Gerhard Schwanz DH3FAW mailto:[EMAIL PROTECTED] http://www.gs-personal.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] Speaking of AGM batteries...
The batteries on hamcall are big 'uns! $40 plus free ship for 25 AH and a carrybox is very tempting. But how to charge them? I use a 7 AH battery originally meant for UPS service. Not the ideal, I know, but it does the job and I don't use battery power much anyway. For a charger, I found a discarded-because-the-battery-failed UPS, extended the battery connections outside the case, and plugged in. Of course you have to keep an eye on it because if the power fails it will go to invert mode! Anybody have experience with this sort of setup as an inexpensive charger? I know it won't work with KBT2 because of the diode, but what about external gel cells? 73 de Jim, N2EY ___ 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] KPA100 Problem still exists, but some new measurements
Well, um, yes. And I noticed another thing which led me think everything is fine. The voltage was there, even without power connected to the K2 at all. All is well now, I neglected the voltage. I will go on air tomorrow for on air tests. RS232 test is next now, then shield and final assembly. And thanks to all who helped!!! Gerhard Schwanz DH3FAW mailto:[EMAIL PROTECTED] http://www.gs-personal.de - Original Message - From: "Mike Harris" <[EMAIL PROTECTED]> To: "Gerhard Schwanz" <[EMAIL PROTECTED]>; <> Sent: Friday, February 04, 2005 5:14 PM Subject: Re: [Elecraft] KPA100 Problem still exists, but some new measurements > G'day, > > Did you have a light shining on the PA transistors? J3+ on my KPA100 > had -0.18V. Apparently something to do with illumination of the PA's. > Well noted by others. > > Regards, > > Mike VP8NO > > - Original Message - > From: "Gerhard Schwanz" <[EMAIL PROTECTED]> > To: > Sent: Friday, February 04, 2005 10:42 AM > Subject: [Elecraft] KPA100 Problem still exists, but some new measurements > > > Hi there, > > I'm still on page 43 in the process and I have now narrowed the problem > area. You remember, I measured a negative voltage of 0.15V on J3+. > > Now: I removed Z1 and found the voltage measured at the collectors of Qs 1 > and 2 to be -0.4V (J3+ is ok now). I don't know where it could come from. > Shorting the collectors to ground via 1k resistor it takes 3 seconds to > eliminate the voltage. I measure 0V. Removing the resistor it takes abt. > 20 seconds for the voltage to go to -0.4V again. > > T2-4,5 are ok. The base of the transistors are ok, 0V. The emitters also, > 0V. The body of T2 also has -0.4V. > > Any idea and testing procedures appreciated! > > Kind regards > > > Gerhard Schwanz > DH3FAW > mailto:[EMAIL PROTECTED] > http://www.gs-personal.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
Re: [Elecraft] KPA100 Problem still exists, but some new measurements
Now: I removed Z1 and found the voltage measured at the collectors of Qs 1 and 2 to be -0.4V (J3+ is ok now). I don't know where it could come from. Hi Gerhard: Dunno if this is related, but I got a small voltage J3 by shining a bright light on the final transistors. There is some sort of photoelectric effect. Your numbers are close to what I measured then: http://www.ac6rm.net/mailarchive/html/elecraft-list/2003-11/msg00574.html -- Ward ___ 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] what should I hear using cw reverse vs
Julius, N2WN wrote: You might fill me in, and probably others, what is the advantage of CWr? Or is it like the sidetone frequency a preferential thing? I can see some use in a contest situation for it... There is really only one reason for switching sidebands in CW: to help you avoid QRM. If another signal is close but not zero beat with the signal you are copying, changing sidebands (CWn to CWr or vice versa) will change the amount of separation between them. 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
RE: [Elecraft] agm battery info
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 I think shipping is about the cost of the battery, but still a decent price The 25 AH one is free shipping thou, should run the K2 for a goodly while And the K1 or KX1 for about a month or three. 73 - --- John N5BSD www.N5BSD.Com Linux user #286770 Machine # 246511 http://counter.li.org - - -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Eric Ward Sent: Friday, February 04, 2005 7:37 AM To: [EMAIL PROTECTED] Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] agm battery info There is a 75AH Unigy AGM battery offered through Hamcall that looks ridiculously inexpensive. http://hamcall.net/unigy.html Eric N0HHS -BEGIN PGP SIGNATURE- Version: PGP 8.1 iQA/AwUBQgOmtj4STIkCKSUlEQLMyACeOMRDyWV3l/qfOjbNkJ/QsKvYlsIAoKNq ZSKqHtK68/+zg6WDueLyoUu5 =SznS -END PGP SIGNATURE- ___ 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]Order your KX1 now
On Fri, Feb 04, 2005 at 10:51:08AM -, Bryan wrote: > Hi All, > > Don't want to alarm you all, but I think we should be prepared. > According to www.spaceweather.com there is a 320M wide asteroid > heading our way on April 13, 2029, passing 30,000 km above the earth > (closer than the geostationary satellites). > > Should we all equip ourselves with emergency communication facilities > like the KX1 ? > > 73 Bryan G3AKF (to be GM3AKF after April 7, 2005) Is Scotland farther from the asteroid? :^) Who will be the first to bounce a signal off it? 73, 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] what should I hear using cw reverse vs
You say TomaHto, and I say Tomayto... ;o) Julius n2wn --- Geoffrey Mackenzie-Kennedy <[EMAIL PROTECTED]> wrote: > Are not you good gentlemen saying the same thing, or > have I got it sideways > and should go away? > 73 to both, > Geoff. > GM4ESD > > - Original Message - > From: "W3FPR - Don Wilhelm" <[EMAIL PROTECTED]> > To: "J F" <[EMAIL PROTECTED]>; > > Sent: Friday, February 04, 2005 1:44 PM > Subject: RE: [Elecraft] what should I hear using cw > reverse vs > > > > Julius, > > > > You do have it backwards (assuming your BFOs are > set normally). In CW > mode, > > the pitch of the received signal becomes higher as > you tune to a higher > > frequency. In CWr, the pitch goes lower as the > tuned frequency goes > higher. > > > > If you want a 'mental memo' you might think that > in CWreverse, the signal > > pitch is the 'reverse' of the tuning direction. > > > > 73, > > Don W3FPR > > > > > -Original Message- > > > > > > Unless I have it backwards, when you are tuning > in on > > > a signal "normal" CW will tune from the high > side to > > > zero beat, in reverse you'll start hearing the > signal > > > on the low side (ie the signal is at 7.025, you > will > > > start hearing it around 7.0243 at a high pitch) > > > 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] what should I hear using cw reverse vs
CW and CWR are like USB and LSB for voice, but with CW either will work, as nobody sounds like Donald Duck in code, hi hi. If you are bothered by QRM (e.g., below the OM you are in QSO with, but not above, or vice versa) switch to CWR. It may help even if you have filters switched in, as the filters may have different responses above and below. 73, Leigh. On Fri, 4 Feb 2005 7:42 am, J F wrote: You might fill me in, and probably others, what is the advantage of CWr? ___ 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] Toroid T6 and Mobile Operation
Phil, The reason for twisting the wires is to keep them together when the toroid is wound (the wire pair forms a transmission line of some nominal impedance)- as long as the wires stayed somewhat along-side one another after winding, the purpose has been realized. There is a note in the manual indicating that no fixatives of any kind are needed or desired, so do not use anything on the toroids - (or you do so at your own peril). There are several K2s being used successfully for mobile operation. I built a K2/100 for Gary W4GNS for use in his 18 wheeler, and he has not mentioned any problems so far (those toroids are mounted only by their leads). You can look him up on QRZ.com and click on his 'locater link' for more information. I am certain he would be willing to answer any questions you may have. 73, Don W3FPR > -Original Message- > > Could anyone give me some advice on winding toroid T6, how > critical is that the windings cross every ½ inch? I think I've > got it pretty close, I mean it looks good and I tried to keep the > wires from un-twisting while winding it around the toroid form. > > Also, has anybody out there operated their K2 mobile with any > luck... the 15 Watt version. On some commercial radios, I have > noticed some manufacturers use silicon on the toroids to keep > them mechanically stable, is this OK? > > ___ 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]Order your KX1 now
Are we sure its not a Guold device planted so SG 1 can land on it?? :) Ron wb1hga Bryan, Should we all equip ourselves with emergency communication facilities like the KX1 ?http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [elecraft]Order your KX1 now
BTW There is an asteroid called KX1 (1986). It is currently in Aquila at about 615 millions km from other KX1s... 73 de Pierre ___ 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] agm battery sources
Thanks to all who responded about possible sources for AGM batteries. I found two places that were selling the Concorde Sun-Xtender 108 aH (model PVX 1080T), reputedly among the best available, for slightly less than $150: http://www.scsolar.com/BatteriesPage.html http://thesolar.biz/Concorde_Battery.htm Shipping is obviously expensive, and distance related. Thus, the closer the source the better. SC Solar, judging from the accent of the young lady who took my order, is in the south. theSolar.biz is in mountain time. I got a quote from out that way (to MA) of roughly $40. The UPS from the south is going only to be $23. best wishes, dave belsley, w1euy ___ 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 stoppages
Ben, I can't venture a guess for your exact problem area other than it is somewhere in the transmit chain of stages. Intermittent behavior is usually the result of an unsoldered (or poorly soldered connection). My recommendation is that you build up the RF probe included with the K2 kit (or use a 'scope), then do whatever you need do to make the failure happen - then while it is still in failure mode, go through the Transmit Troubleshooting section of the manual - the first thing you should be trying to locate is the stage where the signal stops, the stage just before that point is where the trouble is located. We can help better once we know the location. 73, Don W3FPR > -Original Message- > > My K2 dies unexpectedly. Everything goes along fine then suddenly > there is > no output, and no recieve. I performed the following experiment: > > Set the output at 10 watts. > Select the 80 meter band. > Connect the output of the ATU to a dummy load. > Connect the key input to the dit paddle. > > I let the dits fly for about 15 minutes and the rig stops. No output, > although the sidetone continues to work. There is no indication > of power on > the display, and the receiver has stopped working. I open the dit > paddle and > turn the rig off. After a few seconds I turn the rig back on and > everything > is OK again. I repeat the experiment on 40 meters and get the same result. > > Where should I be looking for the problem? > > 73 de Ben Hawkins > ___ 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]Order your KX1 now
Does that mean that a worked all kx1's award is going to be a bit tough for a while? I like the idea of astoroid bounce. Wonder what mode will be "in" that year (2029). NRE/COLE Test Center OH-3 pcartergcfn.org or wd8qwrarrl.net Philip L. Carter, WD8QWR [EMAIL PROTECTED] ___ 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: Share room at Atlanticon?
Hello all, If someone wants to split the cost of a room at Atlanticon, please email me. I have a non-smoking room with two double beds reserved there. You save $40 per night. I have the room reserved for Friday and Saturday evenings. If interested, please email me. 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
RE: [Elecraft] what should I hear using cw reverse vs
You are both right here, the K2 in CW normal mode, tunes upwards in beat on the low bands (160m - 17m) and tunes down in beat on the higher bands. This is due to the K2's mixing schem with low side injection for the higher bands. But the K2 remebers the CW/CWr setting per band, so I have mine set up for CWr for 15-10 meters, and CW normal for the other bands. In this way it always tunes up in beat for an increase in frequency as the default. 73 Sverre LA3ZA http://www.qsl.net/la3za/ -Original Message- You do have it backwards (assuming your BFOs are set normally). In CW mode, the pitch of the received signal becomes higher as you tune to a higher frequency. In CWr, the pitch goes lower as the tuned frequency goes higher. If you want a 'mental memo' you might think that in CWreverse, the signal pitch is the 'reverse' of the tuning direction. > -Original Message- > > Unless I have it backwards, when you are tuning in on a signal > "normal" CW will tune from the high side to zero beat, in reverse > you'll start hearing the signal on the low side (ie the signal is at > 7.025, you will start hearing it around 7.0243 at a high pitch) 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] Soldering station report
> Message: 1 > Date: Thu, 3 Feb 2005 06:18:58 -0800 (PST) > From: Mark Baugh, W5EZY > Subject: [Elecraft] Soldering station report > To: Elecraft Reflector > > Hey, guys, I just purchased one of the Circuit > Specialist CSI Station1 ESD Safe soldering stations > for $34.95. I really like it. I have been using a > borrowed Weller WTCPT, and the CSI1 is every bit as > good or better plus it has temperature control at the twist > of a knob. You can't beat it for the price. You can > get a CSI Station2 with digital display of temperature, but I > see that as something else to fail, then you don't > know what your temperature is. You know the old principle... > KISS. If you're on a budget, this is a good one. > I have no financial interest in Circuit Specialists or > this product. > > 73, > Mark Baugh > W5EZY Mark, It is always useful to get reviews of new tools and products - such as the CSI Station1. http://www.web-tronics.com/cispdeesdsas.html The adjustable temperature stations (e.g., CSI Station1, Haako 936-12, Weller WES51, Pace ST-25) are convenient -- BUT they can often teach newcomers improper soldering knowledge, skills and techniques. Specifically, the proper usage (and balance) of tip profile, tip mass and temperature for soldering. Unfortunately, this sometimes requires the change of a soldering tip to get the proper mass or profile. For example, when changing from PC board soldering to wire lugs or large pins on switches, jacks and plugs. The Elecraft kit builds are often properly structured to allow the usage of a given tip per session or module - before requiring a change to a better sized tip. If I would add one item to the build instructions, it would be a reminder to builders about this point. Fortunately, you previously used a Weller TCP series (WTCPT) that really forced you to think about the 3 factors (profile, mass and temperature) as equals for soldering . The CSI replacement iron for this station: CSI936 IRON-A is only $ 11.95 If you are using a 1/16" / 1.6 mm chisel as a standard tip and your soldering varies (board, lugs, wire) day to day -- that a second iron with a different tip profile (e.g., 1/8" / 3.2 mm chisel; 3/32" / 2.4 mm chisel; 3/64" / 1.2 mm; 1/32" / 0.8 mm) can provide both an inexpensive and flexible solution -- without having to physically change the tip. Greg w9gb ___ 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] Toroid T6 and Mobile Operation
Yes ,The k2/100 That W3FPR Built me is set on the dash of my 18 wheeler ,and has done well ,over say about 30,000 mile's so far,No problems from vibrations,etc. I make lots of contacts including DX,but I have a pretty healthy mobile station,including a Henry SS750 amp and a Hi-Q antenna.Bands have been tough last few weeks as you know,so at low power you may want to think about running CW . I run alot on the county hunters net and am making plans to run CW more because of lousy conditions.. Now my question: I have a very loud pop when using CW with the Henry Amp,I adjusted the T-R setting and for the most part takes it out,but I like T-R setting to be 0.00 is there another way to remove this Pop ,BTW Don rig is doing GREAT!! 73s all W4GNS There is a note in the manual indicating that no fixatives of any kind are needed or desired, so do not use anything on the toroids - (or you do so at your own peril). There are several K2s being used successfully for mobile operation. I built a K2/100 for Gary W4GNS for use in his 18 wheeler, and he has not mentioned any problems so far (those toroids are mounted only by their leads). You - Join ISP.COM today - $8.95 internet , less than 1/2 the cost of AOL Try us out, http://www.isp.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] SO2R setup
W3FPR posted: Just as a reminder to those of you who are contemplating SO2R operation with the K2 - the stock K2 cannot properly use PTT for steering between the transceivers when in CW mode because the PTT line is the same as the DOT input. If the SO2R enabled program steer CW by switching the keying, things will work fine, but I believe there are some that key both rigs and depend on the PTT routing to select the proper transceiver. I am investigating the methods used by various programs right now. As one may be using any of a variety of radios, amplifiers, antenna switching & the like, the way it is done is by forcing the radio into transmit mode first. Amplifiers & anything else downstream has T-R switching driven by the radio. The logging program then goes key down after a short period of time. The process is reversed when going from transmit back to receive. The transition from transmit to receive on one radio may be followed immediately by the second radio doing the opposite (operator CQs on one band whilst listening for replies to just finished CQ on the other). If during the CQ on the second band a reply is heard to the CQ on the first band, the second CQ is aborted & the logging program jumps back to first radio. As different radios behave somewhat differently & timing is critical, some logging programs allow tweaking of PTT-to-key-down delay, as well as adjustable timing for polling the radio for frequency information (or to even not poll the radio during transmit as some just cannot keep up with everything that is going on). Ultimately, all the major contest logging programs implemented CW PTT to avoid hot switching amplifiers, though there is more to it than that. Little things matter & add up after a while if you are running stations at a fair clip (like 100/hour average for an entire weekend, with peaks well over 200 - short spurts of up to six QSOs/minute are even possible from my apartment station). Some logging programs even vary PTT-to-key-down delays based on whether the operator is sending with the paddles instead of from the program's memories, optimizing timing of the station's T-R switching times whilst also trying to minimize unnecessary T-R transitions on relays in the amplifier. This is all done by asserting the two lines that the vast majority of radios have - even my first station that wasn't even a transceiver (SX-100/Viking II) - one to put the radio into transmit mode & the other to go key-down. The three major logging programs do it this way. If something out there achieves this functionality in another way, I doubt you will find it in use by other than a few & most likely even fewer who are serious about radiosport. Like serious VHF & above work, what we do relies on being able to _control_ T-R switching & CW keying externally - an analogy might be T-R switching in a radio itself: various bits need to do certain things in the correct sequence & with correct timing. Just like inside the K2 itself, switching between transmit & receive in a radiosporting station can't really be done in any other way. This is why, although I was thinking of something like Don has done up with the 74AC153, this treats only treats the "symptom" by keeping CW keying from getting to the K2 unless PTT is asserted. I look forward to the firmware fix that addresses the "disease". Hopefully Elecraft will include CW PTT in any future products that might be of interest to the radiosporting segment of the market. In the consumer electronic product industry, usually the product is designed to interface like similar products where that product is used, as opposed to the product requiring the consumer to adopt everything to that product. An exception to this is SONY, but one can only get away with being so unique if you are as dominant in the market as they are. The amateur equipment portion of the consumer electronics industry really isn't a good place to do mainstream products like radios so differently, unless one wants to stay out of the mainstream (where most of the water flows ;^). It's good to see radiosporting applications of the K2 being better embraced here by the Elecraft "community". Like the car one drives, there are a lot of improvements & refinements to the product for those with more pedestrian applications that can come about from competitive use of the product. With the keen interest the K2 has created in the radiosporting community, hopefully any future products might take advantage of this interest to catch stuff like CW PTT earlier on. 73, VR2BrettGraham ___ 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
