Re: [Elecraft] zero-beating a KX1
Sorry, but I did not look at your link until after I sent my response. While that DIP version may work in a K2, I doubt that it can be squeezed into a KX1. 73, Don W3FPR -- Scott, From what source? The latest was that WA3AAL is also SK. 73, Don W3FPR On 6/9/2020 9:38 PM, SCOTT MCDONALD wrote: http://www.wb9kzy.com/gzb.htm This Zerobeat kit looks like it’s still available, might be worth a look. If anyone does please report back, I’m still banging away on my KX1 as well Scott ka9p Make something good happen! On Jun 9, 2020, at 4:30 PM, Don Wilhelm wrote: Tom Hammond N0SS's (SK) website is mostly intact thanks to the Mid Missouri Amateur Radio Club. It is a valuable resource. You can find the files for the K1 and KX1 CW Tuning Indicator (SMD version) at http://www.mmccs.com/mmarc/n0ss/index_k1.html. If you have capability to etch your own boards, Tom recorded full size images. You might also try emailing Fred at FAR Circuits to see if he can create the boards. I believe Tom may have used him as his board supplier. 73, Don W3FPR On 6/8/2020 7:33 PM, Frederick Dwight wrote: If you do a google search on KX1 zero beat indicator or cw zero beat indicator you will see several circuits demonstrated. Some like the one which uses the LM567 (non SMT) part and had a white LED seemed to be good, much less than 100 Hz BW and had the schematic, but some others seemed to be much too broad, perhaps hundreds of Hz wide. My circuit needed quite a bit of audio drive, so rigged up a small 500-500 CT audio transformer and used the primary as a autotransformer to double the audio voltage to the circuit which did not change the earphone volume but enabled the detector to operate without opening up the audio gain too much on any of my rigs. Good Luck Rick KL7CW Sent from Mail for Windows 10 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to donw...@embarqmail.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to k...@aol.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] zero-beating a KX1
Scott, From what source? The latest was that WA3AAL is also SK. 73, Don W3FPR On 6/9/2020 9:38 PM, SCOTT MCDONALD wrote: http://www.wb9kzy.com/gzb.htm This Zerobeat kit looks like it’s still available, might be worth a look. If anyone does please report back, I’m still banging away on my KX1 as well Scott ka9p Make something good happen! On Jun 9, 2020, at 4:30 PM, Don Wilhelm wrote: Tom Hammond N0SS's (SK) website is mostly intact thanks to the Mid Missouri Amateur Radio Club. It is a valuable resource. You can find the files for the K1 and KX1 CW Tuning Indicator (SMD version) at http://www.mmccs.com/mmarc/n0ss/index_k1.html. If you have capability to etch your own boards, Tom recorded full size images. You might also try emailing Fred at FAR Circuits to see if he can create the boards. I believe Tom may have used him as his board supplier. 73, Don W3FPR On 6/8/2020 7:33 PM, Frederick Dwight wrote: If you do a google search on KX1 zero beat indicator or cw zero beat indicator you will see several circuits demonstrated. Some like the one which uses the LM567 (non SMT) part and had a white LED seemed to be good, much less than 100 Hz BW and had the schematic, but some others seemed to be much too broad, perhaps hundreds of Hz wide. My circuit needed quite a bit of audio drive, so rigged up a small 500-500 CT audio transformer and used the primary as a autotransformer to double the audio voltage to the circuit which did not change the earphone volume but enabled the detector to operate without opening up the audio gain too much on any of my rigs. Good Luck Rick KL7CW Sent from Mail for Windows 10 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to donw...@embarqmail.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to k...@aol.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] zero-beating a KX1
http://www.wb9kzy.com/gzb.htm This Zerobeat kit looks like it’s still available, might be worth a look. If anyone does please report back, I’m still banging away on my KX1 as well Scott ka9p Make something good happen! > On Jun 9, 2020, at 4:30 PM, Don Wilhelm wrote: > > Tom Hammond N0SS's (SK) website is mostly intact thanks to the Mid Missouri > Amateur Radio Club. It is a valuable resource. > > You can find the files for the K1 and KX1 CW Tuning Indicator (SMD version) > at http://www.mmccs.com/mmarc/n0ss/index_k1.html. > > If you have capability to etch your own boards, Tom recorded full size > images. You might also try emailing Fred at FAR Circuits to see if he can > create the boards. I believe Tom may have used him as his board supplier. > > 73, > Don W3FPR > >> On 6/8/2020 7:33 PM, Frederick Dwight wrote: >> If you do a google search on KX1 zero beat indicator or cw zero beat >> indicator you will see several circuits demonstrated. Some like the one >> which uses the LM567 (non SMT) part and had >> a white LED seemed to be good, much less than 100 Hz BW and had the >> schematic, but some others seemed to be much too broad, perhaps hundreds of >> Hz wide. My circuit >> needed quite a bit of audio drive, so rigged up a small 500-500 CT audio >> transformer and used the primary as a autotransformer to double the audio >> voltage >> to the circuit which did not change the earphone volume but enabled the >> detector to operate without opening up the audio gain too much on any of my >> rigs. >> Good Luck Rick KL7CW >> Sent from Mail for Windows 10 >> __ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to donw...@embarqmail.com > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to k...@aol.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] zero-beating a KX1
If getting to exactly the sidetone frequency works, an instrument tuner box (or app) might do the job. I don’t know enough to recommend one, but I see some devices for $30 or less and some apps ranging from free to a few dollars. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Jun 9, 2020, at 2:29 PM, Don Wilhelm wrote: > > Tom Hammond N0SS's (SK) website is mostly intact thanks to the Mid Missouri > Amateur Radio Club. It is a valuable resource. > > You can find the files for the K1 and KX1 CW Tuning Indicator (SMD version) > at http://www.mmccs.com/mmarc/n0ss/index_k1.html. > > If you have capability to etch your own boards, Tom recorded full size > images. You might also try emailing Fred at FAR Circuits to see if he can > create the boards. I believe Tom may have used him as his board supplier. > > 73, > Don W3FPR > > On 6/8/2020 7:33 PM, Frederick Dwight wrote: >> If you do a google search on KX1 zero beat indicator or cw zero beat >> indicator you will see several circuits demonstrated. Some like the one >> which uses the LM567 (non SMT) part and had >> a white LED seemed to be good, much less than 100 Hz BW and had the >> schematic, but some others seemed to be much too broad, perhaps hundreds of >> Hz wide. My circuit >> needed quite a bit of audio drive, so rigged up a small 500-500 CT audio >> transformer and used the primary as a autotransformer to double the audio >> voltage >> to the circuit which did not change the earphone volume but enabled the >> detector to operate without opening up the audio gain too much on any of my >> rigs. >> Good Luck Rick KL7CW >> Sent from Mail for Windows 10 >> __ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to donw...@embarqmail.com > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] zero-beating a KX1
Tom Hammond N0SS's (SK) website is mostly intact thanks to the Mid Missouri Amateur Radio Club. It is a valuable resource. You can find the files for the K1 and KX1 CW Tuning Indicator (SMD version) at http://www.mmccs.com/mmarc/n0ss/index_k1.html. If you have capability to etch your own boards, Tom recorded full size images. You might also try emailing Fred at FAR Circuits to see if he can create the boards. I believe Tom may have used him as his board supplier. 73, Don W3FPR On 6/8/2020 7:33 PM, Frederick Dwight wrote: If you do a google search on KX1 zero beat indicator or cw zero beat indicator you will see several circuits demonstrated. Some like the one which uses the LM567 (non SMT) part and had a white LED seemed to be good, much less than 100 Hz BW and had the schematic, but some others seemed to be much too broad, perhaps hundreds of Hz wide. My circuit needed quite a bit of audio drive, so rigged up a small 500-500 CT audio transformer and used the primary as a autotransformer to double the audio voltage to the circuit which did not change the earphone volume but enabled the detector to operate without opening up the audio gain too much on any of my rigs. Good Luck Rick KL7CW Sent from Mail for Windows 10 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to donw...@embarqmail.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] zero-beating a KX1
If you do a google search on KX1 zero beat indicator or cw zero beat indicator you will see several circuits demonstrated. Some like the one which uses the LM567 (non SMT) part and had a white LED seemed to be good, much less than 100 Hz BW and had the schematic, but some others seemed to be much too broad, perhaps hundreds of Hz wide. My circuit needed quite a bit of audio drive, so rigged up a small 500-500 CT audio transformer and used the primary as a autotransformer to double the audio voltage to the circuit which did not change the earphone volume but enabled the detector to operate without opening up the audio gain too much on any of my rigs. Good Luck Rick KL7CW Sent from Mail for Windows 10 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] zero-beating a KX1
You will enjoy your KX1, as I have mine. I made thousands of QSO’s. If you can “zero-beat” within approximately 100 Hz this should be plenty close most of the time. I am a musician so I just adjusted the tone a bit above high C which is an octave above middle C. Actually a D is 587 Hz, which is very close. In your case, I would see if the N0SS website is still active, which it was long after he became a SK. If you can find the schematic, it should be an easy build. I built a tone detector many years ago to drive my telegraph sounders many years ago. I used a $2 eight pin DIP tone decoder chip still available from Digikey and others. It was a LM567 and I set it up for a 80 Hz BW and 600 Hz detect frequency. It is also available for around $1 in the SOIC pkg. I put in a LED which flashes right along with the CW when my RX is tuned close to 600 Hz. The data sheets give info on designing your circuit. Adjust the level into the chip so it reads the CW, but not the noise, not at all a critical adjustment. Another idea is to build a 600 Hz oscillator, or get a tuning fork, and just match the frequency, however not all folks can quickly match frequencies. Possibly the best idea is to build a sharp 600 Hz audio filter, and switch it into the circuit when zero-beating and also it will be useful for operating in tough conditions. A deluxe version on the tone detector could even have something like a 560 Hz, a 600 Hz, and a 640 Hz Hz decoder and use a different color LED for each frequency….really an overkill, but we all like flashing lights ! Good Luck Rick KL7CW Sent from Mail for Windows 10 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Zero-beating a KX1
I installed a N0SS (much missed silent key) zero beat indicator, works excellent. I put one in my K1 and K2 also. leroy AB7CE -Original Message- From: Kelly Breed Sent: Sunday, June 07, 2020 3:00 PM To: elecraft@mailman.qth.net Subject: [Elecraft] Zero-beating a KX1 I recently obtained a KX1, which I am delighted with it. However, I haven’t found a way to zero-beat a signal other than to go to the menu to listen to the sidetone, memorize it and then return to the VFO. I found a faster way to to that, but it is still just memorizing and going back and forth. Is there a better way to zero-beat? For those of us who don’t have perfect pitch? :-) Kelly AJ6KZ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to lmar...@mt.net __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] Zero-beating a KX1
Ref the linked article - "you slowly tune the received signal until it reaches the magic tone that means "zero-beat". Usually, this is the same tone as your CW sidetone, 500-800 Hz, depending on your rig. You need a good ear for pitch." Has everyone forgotten what to "zero beat" means or is it simply that the term has become so abused that it means something different now. Zero beat used to mean to shift the frequency of one signal relative to the frequency of another signal until the audible beat frequency reduced to zero. In those olden days, using an AM receiver to receive CW, the technique I remember was to set the BFO (Beat frequency Oscillator) to zero offset, tune the signal for zero beat, then adjust the BFO offset for desired pitch. How can tuning a single frequency to desired pitch be zero beating. There is no beat frequency to zero. Andy, k3wyc __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Zero-beating a KX1
There once was a nifty CW tuning aid board available for the K1 which I wish I had built but never did. A web search didn't turn it up but this link came up with, I think, the same basic circuit: [ http://www.n5ese.com/zerobeat.htm ]( http://www.n5ese.com/zerobeat.htm ) 72, Brian, K0DTJ -Original Message- From: "Kelly Breed" Sent: Sunday, June 7, 2020 16:27 To: elecraft@mailman.qth.net Subject: Re: [Elecraft] Zero-beating a KX1 Thank you, Don! The idea was not to have more pieces of equipment, so I’ll continue the way I have been. It was nice to confirm that there is no better built-in way to do it. 73, Kelly AJ6KZ > On Jun 7, 2020, at 2:51 PM, Don Wilhelm wrote: > > Kelly, > > If you do not have perfect pitch, then what you are doing is one way. Another > way would be to build a tone generator for your preferred sidetone pitch and > use that. > > 73, > Don W3FPR > > On 6/7/2020 5:00 PM, Kelly Breed wrote: >> I recently obtained a KX1, which I am delighted with it. However, I haven’t >> found a way to zero-beat a signal other than to go to the menu to listen to >> the sidetone, memorize it and then return to the VFO. I found a faster way >> to to that, but it is still just memorizing and going back and forth. Is >> there a better way to zero-beat? For those of us who don’t have perfect >> pitch? :-) __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to huntin...@coastside.net __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Zero-beating a KX1
Thank you, Don! The idea was not to have more pieces of equipment, so I’ll continue the way I have been. It was nice to confirm that there is no better built-in way to do it. 73, Kelly AJ6KZ > On Jun 7, 2020, at 2:51 PM, Don Wilhelm wrote: > > Kelly, > > If you do not have perfect pitch, then what you are doing is one way. Another > way would be to build a tone generator for your preferred sidetone pitch and > use that. > > 73, > Don W3FPR > > On 6/7/2020 5:00 PM, Kelly Breed wrote: >> I recently obtained a KX1, which I am delighted with it. However, I haven’t >> found a way to zero-beat a signal other than to go to the menu to listen to >> the sidetone, memorize it and then return to the VFO. I found a faster way >> to to that, but it is still just memorizing and going back and forth. Is >> there a better way to zero-beat? For those of us who don’t have perfect >> pitch? :-) __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Zero-beating a KX1
I believe the only way is to match the pitch to the sidetone pitch, Kelly. At least I never found another way during all the time I had my KX1. The KX1 is a really nifty little package, no? I finally sold mine when injuries from adventures in my 20's coupled with the accumulated birthdays began to limit what I could do in the field. I use my K2, battery, and solar charger now since I never get very far from the truck. I also found that zero beat was overrated. "Close enough" seems to be "good enough." 73, Fred ["Skip"] K6DGW Sparks NV DM09dn Washoe County On 6/7/2020 2:00 PM, Kelly Breed wrote: I recently obtained a KX1, which I am delighted with it. However, I haven’t found a way to zero-beat a signal other than to go to the menu to listen to the sidetone, memorize it and then return to the VFO. I found a faster way to to that, but it is still just memorizing and going back and forth. Is there a better way to zero-beat? For those of us who don’t have perfect pitch? :-) Kelly AJ6KZ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Zero-beating a KX1
Kelly, If you do not have perfect pitch, then what you are doing is one way. Another way would be to build a tone generator for your preferred sidetone pitch and use that. 73, Don W3FPR On 6/7/2020 5:00 PM, Kelly Breed wrote: I recently obtained a KX1, which I am delighted with it. However, I haven’t found a way to zero-beat a signal other than to go to the menu to listen to the sidetone, memorize it and then return to the VFO. I found a faster way to to that, but it is still just memorizing and going back and forth. Is there a better way to zero-beat? For those of us who don’t have perfect pitch? :-) __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] Zero-beating a KX1
I recently obtained a KX1, which I am delighted with it. However, I haven’t found a way to zero-beat a signal other than to go to the menu to listen to the sidetone, memorize it and then return to the VFO. I found a faster way to to that, but it is still just memorizing and going back and forth. Is there a better way to zero-beat? For those of us who don’t have perfect pitch? :-) Kelly AJ6KZ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] Zero-beating on CW
I have never been convinced of being accurate on zero-beat on my K3. With previous radio units, I would zero-beat by matching the tone of the received station with my own keying side-tone. But it does not seem accurate on the K3. So the question: How would I determine that my offset and side tone would match up so that I am really zero-beated when I think I am. Thanks ahead of time. -- 73 de Ted Edwards, W3TB and GØPWW and thinking about operating CW: Do today what others won't, so you can do tomorrow what others can't. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Zero-beating on CW
Hello Ted, When I need to be on zero beat within one Hz, I always switch on the spot on the K3 and set the received signal to the same volume. Once I hear the combination of both increase and decrease slowly, I know that I am within a Hz. It's also the way I calibrate the K3 against a standard like WWV or the russian station on 9.996 / 14.996 (forgot the callsign). 73 Arie PA3A Ted Edwards W3TB schreef op 5-10-2014 12:44: I have never been convinced of being accurate on zero-beat on my K3. With previous radio units, I would zero-beat by matching the tone of the received station with my own keying side-tone. But it does not seem accurate on the K3. So the question: How would I determine that my offset and side tone would match up so that I am really zero-beated when I think I am. Thanks ahead of time. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Zero-beating on CW
Any particular reason to need to zero beat to 1Hz? I find the auto tune function works perfectly well. In fact if I'm one of many stations calling I often offset 40-50Hz so as to be different from the all zero beat mush. Regards, Mike VP8NO On 05/10/2014 07:55, Arie Kleingeld PA3A wrote: Hello Ted, When I need to be on zero beat within one Hz, I always switch on the spot on the K3 and set the received signal to the same volume. Once I hear the combination of both increase and decrease slowly, I know that I am within a Hz. It's also the way I calibrate the K3 against a standard like WWV or the russian station on 9.996 / 14.996 (forgot the callsign). 73 Arie PA3A Ted Edwards W3TB schreef op 5-10-2014 12:44: I have never been convinced of being accurate on zero-beat on my K3. With previous radio units, I would zero-beat by matching the tone of the received station with my own keying side-tone. But it does not seem accurate on the K3. So the question: How would I determine that my offset and side tone would match up so that I am really zero-beated when I think I am. Thanks ahead of time. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Zero-beating on CW
HI, In a pileup, I ALWAYS move off zero beat, so if I transmit, I don't cover the DX station in the event I transmit on top of him/her. -- Thanks and 73's, For equipment, and software setups and reviews see: www.nk7z.net for MixW support see; http://groups.yahoo.com/neo/groups/mixw/info for Dopplergram information see: http://groups.yahoo.com/neo/groups/dopplergram/info for MM-SSTV see: http://groups.yahoo.com/neo/groups/MM-SSTV/info On Sun, 2014-10-05 at 08:49 -0300, Mike Harris wrote: Any particular reason to need to zero beat to 1Hz? I find the auto tune function works perfectly well. In fact if I'm one of many stations calling I often offset 40-50Hz so as to be different from the all zero beat mush. Regards, Mike VP8NO On 05/10/2014 07:55, Arie Kleingeld PA3A wrote: Hello Ted, When I need to be on zero beat within one Hz, I always switch on the spot on the K3 and set the received signal to the same volume. Once I hear the combination of both increase and decrease slowly, I know that I am within a Hz. It's also the way I calibrate the K3 against a standard like WWV or the russian station on 9.996 / 14.996 (forgot the callsign). 73 Arie PA3A Ted Edwards W3TB schreef op 5-10-2014 12:44: I have never been convinced of being accurate on zero-beat on my K3. With previous radio units, I would zero-beat by matching the tone of the received station with my own keying side-tone. But it does not seem accurate on the K3. So the question: How would I determine that my offset and side tone would match up so that I am really zero-beated when I think I am. Thanks ahead of time. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to d...@nk7z.net __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Zero-beating on CW
Ted, Is the value you have set in PITCH the same as the audio frequency you are listening at? If so, the SPOT feature should be quite accurate. Actually, between the CWT indicator and the Auto-Spot feature of the K3, it is easy to get within a Hz or two. Auto-Spot may not work well in very crowded band conditions unless you narrow the filter width. Also, you should be tuned within 20 Hz or less for Auto-Spot to work effectively. If you are matching the tones with your ears, unless you have perfect pitch, adjust the amplitude of the sidetone and the signal to be near equal and listen for the WOW, WOW, WOW tone to slow to zero. That will assure you of zero beat. 73, Don W3FPR On 10/5/2014 6:44 AM, Ted Edwards W3TB wrote: I have never been convinced of being accurate on zero-beat on my K3. With previous radio units, I would zero-beat by matching the tone of the received station with my own keying side-tone. But it does not seem accurate on the K3. So the question: How would I determine that my offset and side tone would match up so that I am really zero-beated when I think I am. Thanks ahead of time. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Zero-beating on CW
Mike, Only when calibrating the K3 freq I tune within one Hz. Performing the Ref-Cal. That's all. 73 Arie PA3A Mike Harris schreef op 5-10-2014 13:49: Any particular reason to need to zero beat to 1Hz? I find the auto tune function works perfectly well. In fact if I'm one of many stations calling I often offset 40-50Hz so as to be different from the all zero beat mush. Regards, __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Zero-beating on CW
OK that is a different issue to that which I think many folks understood from your original comment. I don't find zero beating WWV to be a problem when trimming up the TCXO calibration, the wow, wow wow is easy to detect and fine tune. Indeed, it is a regular requirement, not a do once and forget issue, assuming it is ever done in the first instance after a kit build. Regards, Mike VP8NO On 05/10/2014 12:54, Arie Kleingeld PA3A wrote: Mike, Only when calibrating the K3 freq I tune within one Hz. Performing the Ref-Cal. That's all. 73 Arie PA3A Mike Harris schreef op 5-10-2014 13:49: Any particular reason to need to zero beat to 1Hz? I find the auto tune function works perfectly well. In fact if I'm one of many stations calling I often offset 40-50Hz so as to be different from the all zero beat mush. Regards, __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] Zero Beating
Tom Childers, N5GE wrote: On Wed, 14 May 2008 08:21:59 -0700, you wrote: Tuning for zero beat is the same method orchestras use to match the Concert Masters note at the beginning of a concert, so it is very accurate. It is also the way piano tuners tune pianos with a tuning fork. True...very easy for anyone to do. You can also watch the S-meter (an analog one is better) for minimum swings as the beat frequency is approached (same way pilots synchronize multiple engines BTW). If you have good hearing, you can also match two tones separated in time. Below is a website where you can test your ability to do that. I think I got something like 0.4 Hz on the test which was in the upper 90s percentile. If you have musical ability, you do this all the time as you adjust your instrument on-the-fly (e.g. positioning your fingers on a violin). http://tonometric.com/adaptivepitch/ (there are a couple of other fun tests too!) 73, Bill W4ZV -- View this message in context: http://www.nabble.com/K3-BETA-FIRMWARE-RELEASEMCU-rev-1.94-tp17199166p17236522.html Sent from the Elecraft mailing list archive at Nabble.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] Zero Beating
On Wed, 14 May 2008 10:22:05 -0700 (PDT), you wrote: Tom Childers, N5GE wrote: On Wed, 14 May 2008 08:21:59 -0700, you wrote: Tuning for zero beat is the same method orchestras use to match the Concert Masters note at the beginning of a concert, so it is very accurate. It is also the way piano tuners tune pianos with a tuning fork. True...very easy for anyone to do. You can also watch the S-meter (an analog one is better) for minimum swings as the beat frequency is approached (same way pilots synchronize multiple engines BTW). If you have good hearing, you can also match two tones separated in time. Below is a website where you can test your ability to do that. I think I got something like 0.4 Hz on the test which was in the upper 90s percentile. If you have musical ability, you do this all the time as you adjust your instrument on-the-fly (e.g. positioning your fingers on a violin). [snip] Another way to make zero beating on CW even more accurate is to turn the AGC off, but if you do this don't forget to turn the AF gain down before you do! 73, Tom, N5GE - SWOT 3537 - Grid EM12jq Those who would give up Essential Liberty to purchase a little Temporary Safety deserve neither Liberty nor Safety An excerpt from a letter written in 1755 from the Assembly to the Governor of Pennsylvania. Support the entire Constitution, not just the parts you like. http://www.n5ge.com http://www.eQSL.cc/Member.cfm?N5GE ___ 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] Zero-Beating Made Easy!
Hello all, Don't worry about zero-beating to find the other ops frequency! Just add a K6XX CW Visual Indicator to your K1, K2 or KX1. All you do is tune onto a signal until the LED starts flashing to the cw. That's it - your within +- 20hz of him! The EPA QRP Club will begin selling the kits in a week or so. Nice small board that nicely fits into most rigs. If you want a look at my kit installed in my KX1 go to: http://www.wa3wsj.com/KX1.html http://www.n3epa.org 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] Zero beating
Don, Zero beating does not involve hearing down to zero cycles. It is matching two tones, whatever their frequency, until; the beating phenomenon, which is not a sound comprised of frequencies lower than the audio passband of the receiver or below the lower limit of human hearing, stops. As you know, it is more of a whooping sound. It is clearly within the audio passband of most radios. I used to use my K2 listening to WWV with Spectrogram as a frequency reference. I recently built two NorCal FCC1/2 DDS VFO's. If I had used the K2/Spectrogram to calibrate them, they would have been accurate to within a few Hz, as you say. By using my Japan Radio listening to WWV in AM mode (no Spectrogram needed!), it was easy to hear the VFO beating against WWV's carrier. Without being zero beat, it is possible to count the beats per seconds if you know how to tune a piano. You can tell how may cycles it's off. But anyone can easily hear when the beating process stops, and then the *maximum* error the VFO readout displays is 1 Hz. I have found it very hard to get this kind of accuracy using Spectrogram. Regards, Andy W9NJY K2 KX1 --- Message: 16 Date: Thu, 1 Mar 2007 20:54:29 -0500 From: Don Wilhelm [EMAIL PROTECTED] Subject: RE: [Elecraft] Frequency counters for Alignment To: Ken Kopp [EMAIL PROTECTED], Ron D'Eau Claire [EMAIL PROTECTED], 'Elecraft Discussion List' elecraft@mailman.qth.net Message-ID: [EMAIL PROTECTED] Content-Type: text/plain; charset=iso-8859-1 Ken and all, What you say is true - but you can detect the transmitted tones sent by WWV with great accuracy. See http://tf.nist.gov/stations/iform.html#stdf for innformation about what tones are transmitted at what times. With the audio of a SSB receiver fed into the computer soundcard, and the computer running a program like Spectrogram, one can align the received tones with properly set Spectrogram markers and when the transmitted tones line up with the received tones, you can be certain that WWV is tuned precisely. This is actually more accurate than trying to listen for the carrier at zero frequency - neither the receiver audio nor the human ear can respond to zero frequency, and attempt to do so may be off by +/-30 Hz or more - detecting the tones with a graphic display will allow you to tune within a few Hz. 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
[Elecraft] Zero beating
Hi I had a friend over a few weeks ago that is a captain for AA and flies 767's. I was working on his K2 and doing the final tune up when he asked me how to zero beat the sidetone. When I tuned up WWV and hit the sidetone button I told him to listen for the wow-wow sound of the beat. Suddenly he got it and said it is the same as balancing the speed of two aircraft engines when flying, something he had been doing for years. I think we have all heard the drone of two engines on an aircraft or boat but I had never thought of explaining a zero beat that way but that is exactly what it is. Don Brown KD5NDB - Original Message - From: Tom Hammondmailto:[EMAIL PROTECTED] To: Joe - aa4nnmailto:[EMAIL PROTECTED] ; elecraft@mailman.qth.netmailto:elecraft@mailman.qth.net Sent: Sunday, September 19, 2004 10:17 AM Subject: Re: [Elecraft] Using the K2's 10th S-meter LED for CW Tuningindication I've never really needed it! I've been doing aural zero beating for so many years (46 now) that I can usually get within a few tens of Hz even without hearing the sidetone, and within 10 Hz when using the sidetone. For those who haven't developed to knack, or who just like bells (err, LEDs) 'n whistles, the CW Tuning Indicator is a nice adjunct. Tom ___ 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
