Re: [Elecraft] K3 Keyer to use with Tascam interface
There's one good reason that I know of. The VOX on/off setting is shared by AFSK, DATA A, and SSB. Having VOX left unintentionally active on SSB is very bad -- it leads to amp faults and unintended transmissions I've asked a few times for this to be fixed and swore to myself that I would never mention it again but oops there I went... 73 and thanks for listening, Carl WS7L On Tue, Jan 20, 2015 at 8:13 AM, Don Wilhelm w3...@embarqmail.com wrote: That sounds like you want to build effectively a VOX circuit (to recognize the keying tone) and drive the PTT input. I can think of no good reason to do that because the K3 has a very good VOX that works well for digital modes. __ 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] K3 Keyer to use with Tascam interface
Indeed it does. I never understand the desire to make things complicated. Witness the desire to use FSK rather than AFSK with the K3. Wes N7WS RTTY DX 232 worked, 208 confirmed using a K3, AFSK, VOX and a laptop soundcard. On 1/20/2015 12:05 AM, Jim Brown wrote: On Mon,1/19/2015 8:51 PM, Chris Meagher wrote: Rather than use VOX, I would like to make a simple as possible circuit to take the Tascam right channel output (carrying fl-digi keyer tone) to key the K3 via the rear panel RCA,. Preferably electronic switching. Could use a 9V battery? Why do you want to do this? VOX works very well with digital modes. 73, Jim K9YC __ 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] K3 Keyer to use with Tascam interface
That sounds like you want to build effectively a VOX circuit (to recognize the keying tone) and drive the PTT input. I can think of no good reason to do that because the K3 has a very good VOX that works well for digital modes. The only remote reason I can think of would be if you are running Fldigi with the default soundcard and also have Windows Sounds enabled - desiring not to key the transmitter with the Windows sounds. But that is not practical since the windows sounds occur on both channels and that goal would be defeated entirely because the right channel sound would also key the transmitter through that circuit you refer to. 73, Don W3FPR On 1/19/2015 11:51 PM, Chris Meagher wrote: Hi I have set up a Tascam US-125M with K3/10, for work with fl-digi. Rather than use VOX, I would like to make a simple as possible circuit to take the Tascam right channel output (carrying fl-digi keyer tone) to key the K3 via the rear panel RCA,. Preferably electronic switching. Could use a 9V battery? Does anyone have a ready made circuit? Thanks. __ 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] K3 Keyer to use with Tascam interface
Chris, I understand your question, I have been wondering the same thing. And in spite of a couple replies you got, I think it is a good question. If you find an answer, please let me know, and I will do the same. I have tried using the K3 VOX for digital modes and I have had problems with it. One thing I have done is use a Signalink USB on the transmit side to key the K3, that works well, but simpler solution might be better. Thank you, good luck 73 Emory WM3M -Original Message- From: Chris Meagher Sent: Monday, January 19, 2015 11:51 PM To: elecraft@mailman.qth.net Subject: [Elecraft] K3 Keyer to use with Tascam interface Hi I have set up a Tascam US-125M with K3/10, for work with fl-digi. Rather than use VOX, I would like to make a simple as possible circuit to take the Tascam right channel output (carrying fl-digi keyer tone) to key the K3 via the rear panel RCA,. Preferably electronic switching. Could use a 9V battery? Does anyone have a ready made circuit? Thanks. __ 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 ejk...@gmail.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] K3 Keyer to use with Tascam interface
Jim, isn't the appropriate PTT hookup covered in your HamInterfacing document? I remember using it for my TS-830s a few years ago for RTTY. http://audiosystemsgroup.com/HamInterfacing.pdf Something to check, anyway, Chris. 73, Byron N6NUL On Mon, Jan 19, 2015 at 11:05 PM, Jim Brown j...@audiosystemsgroup.com wrote: On Mon,1/19/2015 8:51 PM, Chris Meagher wrote: Rather than use VOX, I would like to make a simple as possible circuit to take the Tascam right channel output (carrying fl-digi keyer tone) to key the K3 via the rear panel RCA,. Preferably electronic switching. Could use a 9V battery? Why do you want to do this? VOX works very well with digital modes. 73, Jim K9YC __ 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 by...@n6nul.org -- - Northern California Contest Club - CU in the Cal QSO Party 3-4 Oct 2015 - www.cqp.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] K3 Keyer to use with Tascam interface
Further the VOX GAIN setting is the same for DATA and SSB. I find I have to increase the VOX GAIN for digital modes and of course forget to turn it back down for SSB. Having it per-mode would help. Fortunately I don't use either mode very much so it's not a big deal. 73, Brian, K0DTJ On 1/20/2015 8:48 AM, Carl Clawson wrote: The VOX on/off setting is shared by AFSK, DATA A, and SSB. __ 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] K3 Keyer to use with Tascam interface
I asked a long time ago for separating SSB VOX from everything else. I found a workaround for my needs, but I;d still like it. It's supposedly on the list. 73, Mike NF4L On Jan 20, 2015, at 1:36 PM, Brian Hunt huntin...@coastside.net wrote: Further the VOX GAIN setting is the same for DATA and SSB. I find I have to increase the VOX GAIN for digital modes and of course forget to turn it back down for SSB. Having it per-mode would help. Fortunately I don't use either mode very much so it's not a big deal. 73, Brian, K0DTJ On 1/20/2015 8:48 AM, Carl Clawson wrote: The VOX on/off setting is shared by AFSK, DATA A, and SSB. __ 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 n...@comcast.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] K3 Keyer to use with Tascam interface
On Tue,1/20/2015 8:48 AM, Carl Clawson wrote: There's one good reason that I know of. The VOX on/off setting is shared by AFSK, DATA A, and SSB. Having VOX left unintentionally active on SSB is very bad -- it leads to amp faults and unintended transmissions Can't argue with that -- every time the XYL walks through the shack when I'm doing a SSB contest with a load of laundry she trips the VOX when the door slams. It's one of those things I've learned to live with. :) 73, Jim K9YC __ 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] K3 Keyer to use with Tascam interface
every time the XYL walks through the shack when I'm doing a SSB contest with a load of laundry she trips the VOX when the door slams Jim the best solution is for you to be the Perfect Gentleman and open the door for the wife walks through the shack with a load of laundry. :-D big grin 73 Milverton. From: Jim Brown j...@audiosystemsgroup.com To: elecraft@mailman.qth.net Sent: Tuesday, January 20, 2015 11:41 AM Subject: Re: [Elecraft] K3 Keyer to use with Tascam interface On Tue,1/20/2015 8:48 AM, Carl Clawson wrote: There's one good reason that I know of. The VOX on/off setting is shared by AFSK, DATA A, and SSB. Having VOX left unintentionally active on SSB is very bad -- it leads to amp faults and unintended transmissions Can't argue with that -- every time the XYL walks through the shack when I'm doing a SSB contest with a load of laundry she trips the VOX when the door slams. It's one of those things I've learned to live with. :) 73, Jim K9YC __ 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 tnny...@yahoo.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] K3 Keyer to use with Tascam interface
I'm in Carl's situation. I solved my problem with the SignaLink USB by using its VOX to key the K3. With a Tascam USB US-122MKII arriving from Emory, I'll have the problem again. The one VOX setting for SSB and Data is particularly annoying with my style of operating. I am a search and pounce operator at heart. I scan a band looking for interesting signals. If I see one, I try for the contact. This style means I'm always switching between SSB, CW, Data A, and AFSK A. Sometimes I even includes AM. I haven't use FM in the rotation, because 10M is a big band and I'm not yet very active on 6M. Please Elecraft, separate the VOX settings for SSB and Data. I would be very surprised is anyone complained, and a number of us will be quite gratified. 73 Bill AE6JV On 1/20/15 at 8:48 AM, clawso...@gmail.com (Carl Clawson) wrote: There's one good reason that I know of. The VOX on/off setting is shared by AFSK, DATA A, and SSB. Having VOX left unintentionally active on SSB is very bad -- it leads to amp faults and unintended transmissions I've asked a few times for this to be fixed and swore to myself that I would never mention it again but oops there I went... --- Bill Frantz| If you want total security, go to prison. There you're 408-356-8506 | fed, clothed, given medical care and so on. The only www.pwpconsult.com | thing lacking is freedom. - Dwight D. Eisenhower __ 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] K3 Keyer to use with Tascam interface
Carl, Since you likely have a serial connection for rig control in addition to the audio lines, you have an alternative to using the Fldigi 'tone keying'. Tell the digital mode application to use either RTS or DTR for rig PTT -- Then set the K3 CONFIG: PTT-KEY menu to match the selection in your software. Only one downside to this method is when the computer boots, it will test the DTR and RTS signal lines which will cause the K3 to go into transmit temporarily (but with no audio, so no RF should be produced). To prevent that from happening, boot the computer first and then power the K3 on. 73, Don W3FPR On 1/20/2015 11:48 AM, Carl Clawson wrote: There's one good reason that I know of. The VOX on/off setting is shared by AFSK, DATA A, and SSB. Having VOX left unintentionally active on SSB is very bad -- it leads to amp faults and unintended transmissions I've asked a few times for this to be fixed and swore to myself that I would never mention it again but oops there I went... 73 and thanks for listening, Carl WS7L __ 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] K3 Keyer to use with Tascam interface
Build the circuit here: https://sites.google.com/site/kh6tyinterface/ You need connect only the right channel (ring of the typical TRS jack). The second transformer (receive audio), assorted components, and the transmit audio pot are not needed. Do use the transformer on the TX audio as it provides a voltage step-up to make the VOX circuit more sensitive. I believe the pseudo FSK decoder circuit in the fldigi documentation will also work for PTT. 73, ... Joe, W4TV On 2015-01-19 11:51 PM, Chris Meagher wrote: Hi I have set up a Tascam US-125M with K3/10, for work with fl-digi. Rather than use VOX, I would like to make a simple as possible circuit to take the Tascam right channel output (carrying fl-digi keyer tone) to key the K3 via the rear panel RCA,. Preferably electronic switching. Could use a 9V battery? Does anyone have a ready made circuit? Thanks. __ 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 li...@subich.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] K3 Keyer to use with Tascam interface
Hi I have set up a Tascam US-125M with K3/10, for work with fl-digi. Rather than use VOX, I would like to make a simple as possible circuit to take the Tascam right channel output (carrying fl-digi keyer tone) to key the K3 via the rear panel RCA,. Preferably electronic switching. Could use a 9V battery? Does anyone have a ready made circuit? Thanks. __ 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] K3 Keyer to use with Tascam interface
On Mon,1/19/2015 8:51 PM, Chris Meagher wrote: Rather than use VOX, I would like to make a simple as possible circuit to take the Tascam right channel output (carrying fl-digi keyer tone) to key the K3 via the rear panel RCA,. Preferably electronic switching. Could use a 9V battery? Why do you want to do this? VOX works very well with digital modes. 73, Jim K9YC __ 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
