Re: [Elecraft] K3 cleanest signal possible
If the K3 were supplied with a stock microphone, rather than leaving it to the purchaser to potentially make a poor choice and then not bother to compensate with the equaliser, I believe we wouldn't be reading these admittedly isolated comments about K3s with thin audio. This has recently come up again with the current dxpedition in Iran. I probably make fewer than a dozen SSB QSOs in a year, yet when I do I am almost always complimented on the audio. I am using the MH2 microphone. 73 Stephen G4SJP On 20 January 2015 at 00:24, Nate Bargmann n...@n0nb.us wrote: * On 2015 19 Jan 16:32 -0600, Fred Jensen wrote: For the record, using the Heil headset from Elecraft, I continue to get unsolicited great audio comments in essentially every SSB contest I enter. NAQP last Sat was the last. Never happened before the K3 I have found the same with my K3/CM500 combination. I never received compliments on my transmitted audio until I owned the K3. Yet, on various forums the meme still exists that the K3 is a poor SSB radio. I've seen this comment a bit less, especially since firmware 4.51 improved the AGC noticeably. Other than distortion when engaging the auto-notch, I am pleased enough that I am not contemplating replacing the K3. 73, Nate N0NB P.S. I claim that I have a face for radio and a voice for CW/digi modes! -- The optimist proclaims that we live in the best of all possible worlds. The pessimist fears this is true. Ham radio, Linux, bikes, and more: http://www.n0nb.us __ 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 eastbrantw...@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 cleanest signal possible
The OP was more about Phase Noise that is emitted by the Radio. Here is Wayne's response to the OP. BTW, Jim's call should be K9YC as Wayne corrected later. ( See W9YC's study of transmit phase noise and keying bandwidth of various transceivers: http://audiosystemsgroup.com/TXNoise.pdf ) 73 Milverton. / W9MMS The discussion galloped off in the directions of phase noise and audio quality, but the OP didn't actually specify what he meant by clean. Had he mentioned IMD, the discussion might have gone differently. In static 2-tone tests, the K3's IMD performance is adequate for a 12V transportable transceiver, but the high-order IMD is not very good at all (mostly due to the MOSFET driver). However, the K3 pulls ahead again in dynamic IMD tests with real-life speech modulation, thanks to its almost unique light touch ALC system. The K3 implements ALC in the way that the engineers at Collins (the inventors of ALC for SSB) originally intended. The RF drive is pre-calibrated across a range of power levels on each band, leaving the ALC to deal with any moderate overshoots. By contrast, most (all?) other transceivers still seem to use an ALC loop with very high gain to control the power level, band-to-band gain variations, clipping overshoots and whatever else, and the high loop gain creates major dynamic overshoots of its own. 73 from Ian GM3SEK __ 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 cleanest signal possible
If the K3 were supplied with a stock microphone make a poor choice and then not bother to compensate with the equaliser I probably make fewer than a dozen SSB QSOs in a year, yet when I do I amalmost always complimented on the audio. For the record, using the Heil headset from Elecraft, I continue to get unsolicited great audio comments in essentially every SSB contest I enter. It seems that there is a case of Apples and Oranges here. The OP was more about Phase Noise that is emitted by the Radio. Here is Wayne's response to the OP. BTW, Jim's call should be K9YC as Wayne corrected later. ( See W9YC's study of transmit phase noise and keying bandwidth of various transceivers: http://audiosystemsgroup.com/TXNoise.pdf ) 73 Milverton. / W9MMS From: Stephen Prior eastbrantw...@gmail.com To: Elecraft elecraft@mailman.qth.net Sent: Tuesday, January 20, 2015 3:41 AM Subject: Re: [Elecraft] K3 cleanest signal possible If the K3 were supplied with a stock microphone, rather than leaving it to the purchaser to potentially make a poor choice and then not bother to compensate with the equaliser, I believe we wouldn't be reading these admittedly isolated comments about K3s with thin audio. This has recently come up again with the current dxpedition in Iran. I probably make fewer than a dozen SSB QSOs in a year, yet when I do I am almost always complimented on the audio. I am using the MH2 microphone. 73 Stephen G4SJP On 20 January 2015 at 00:24, Nate Bargmann n...@n0nb.us wrote: * On 2015 19 Jan 16:32 -0600, Fred Jensen wrote: For the record, using the Heil headset from Elecraft, I continue to get unsolicited great audio comments in essentially every SSB contest I enter. NAQP last Sat was the last. Never happened before the K3 I have found the same with my K3/CM500 combination. I never received compliments on my transmitted audio until I owned the K3. Yet, on various forums the meme still exists that the K3 is a poor SSB radio. I've seen this comment a bit less, especially since firmware 4.51 improved the AGC noticeably. Other than distortion when engaging the auto-notch, I am pleased enough that I am not contemplating replacing the K3. 73, Nate N0NB P.S. I claim that I have a face for radio and a voice for CW/digi modes! -- The optimist proclaims that we live in the best of all possible worlds. The pessimist fears this is true. Ham radio, Linux, bikes, and more: http://www.n0nb.us __ 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 eastbrantw...@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 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
[Elecraft] Elecraft K2 RS232 serial port on pc
I've successfully completed my K2 and tests appear ok. Added SSB board and that's ok too. Then built KAT100-1 an KAT102 and also tests ok., But now, connect to Computer and bother I didn't think to check! No serial connection on the computers What's the recommendation? An RS232 serial to USB adapter? Reading the archives it appears this could create problems. I've two computers, a desktop HP Compaq Presario and a laptop, SONY VAIO E series both running MSWindows V7, neither have serial ports. Any suggestions would be welcome. Thanks Kev VK5KS K2 #7552 __ 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
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] Elecraft K2 RS232 serial port on pc
On the Sony laptop, you will need to get a USB to serial cord. Be sure to get an adapter with an FTDI chipset. There always seem to be issues with drivers, including one that would brick the adapter. I don't know where that issue got to. The CURRENT model being sold by Elecraft seems to be working ok. Use their supplied driver. If your HP desktop has a spare slot, install a serial card with two or four REAL RS232 serial ports. RS232 is a totally stable interface that hasn't been changed even a little in many years. Nobody is trying to adapt RS232 to some new hardware, like what goes on in the world of USB all the time. In my own case, RS232-land became refreshingly boring and non-problematic when I installed a 2 port serial card. They are assigned COM1 and COM2 in the bios boot-up, which go to my K3 and K2 respectively, and there are none of the where-did-my-com-port-go issues. My Microham u2R has a USB interface which has been tamed nicely and handles the rest of the signal lines. It has been rock solid with zero issues. *** Very Important *** You will NOT be able to plug any standard DB9 RS232 into the K2's DB9 socket on the back. Do that and you burn stuff. You MUST use the special Y cord to split up the RS232 signals and the proprietary signals. See the KIO2 manual... http://www.elecraft.com/manual/KIO2%20man%20rev%20C%20.pdf ...beginning on page 12, for a description of the cord specifics. 73, Guy On Tue, Jan 20, 2015 at 6:58 AM, Kevin Schache hillsla...@internode.on.net wrote: I've successfully completed my K2 and tests appear ok. Added SSB board and that's ok too. Then built KAT100-1 an KAT102 and also tests ok., But now, connect to Computer and bother I didn't think to check! No serial connection on the computers What's the recommendation? An RS232 serial to USB adapter? Reading the archives it appears this could create problems. I've two computers, a desktop HP Compaq Presario and a laptop, SONY VAIO E series both running MSWindows V7, neither have serial ports. Any suggestions would be welcome. Thanks Kev VK5KS K2 #7552 __ 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 k2av@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
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 cleanest signal possible
On Tue,1/20/2015 1:41 AM, Stephen Prior wrote: If the K3 were supplied with a stock microphone, rather than leaving it to the purchaser to potentially make a poor choice and then not bother to compensate with the equaliser, I believe we wouldn't be reading these admittedly isolated comments about K3s with thin audio. This has recently come up again with the current dxpedition in Iran. I probably make fewer than a dozen SSB QSOs in a year, Those complaining about thin audio clearly don't know much about the fundamentals of communications and speech intelligibility. It has been well known for nearly a century that the frequency range that is most important for speech intelligibility is 400 Hz to 4 kHz. It is also well known that speech below 400 Hz wastes transmitter power. Those guys in Iran SHOULD have thin audio. I'd consider them incompetent if they did not. Ham radio is communications, not broadcasting. Many of us have done both, and we know the difference. I'm a Fellow of the Audio Engineering Society. My music recordings are full range. My ham transmissions are not. 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] Elecraft K2 RS232 serial port on pc
The FTDI driver that could brick the counterfeit FTDI chips has been pulled. Whether that is good or bad remains to be seen. Matthew PittsN8OHU From: Guy Olinger K2AV k2av@gmail.com To: Kevin Schache hillsla...@internode.on.net Cc: Elecraft Reflector Elecraft@mailman.qth.net Sent: Tuesday, January 20, 2015 11:35 AM Subject: Re: [Elecraft] Elecraft K2 RS232 serial port on pc On the Sony laptop, you will need to get a USB to serial cord. Be sure to get an adapter with an FTDI chipset. There always seem to be issues with drivers, including one that would brick the adapter. I don't know where that issue got to. The CURRENT model being sold by Elecraft seems to be working ok. Use their supplied driver. If your HP desktop has a spare slot, install a serial card with two or four REAL RS232 serial ports. RS232 is a totally stable interface that hasn't been changed even a little in many years. Nobody is trying to adapt RS232 to some new hardware, like what goes on in the world of USB all the time. In my own case, RS232-land became refreshingly boring and non-problematic when I installed a 2 port serial card. They are assigned COM1 and COM2 in the bios boot-up, which go to my K3 and K2 respectively, and there are none of the where-did-my-com-port-go issues. My Microham u2R has a USB interface which has been tamed nicely and handles the rest of the signal lines. It has been rock solid with zero issues. *** Very Important *** You will NOT be able to plug any standard DB9 RS232 into the K2's DB9 socket on the back. Do that and you burn stuff. You MUST use the special Y cord to split up the RS232 signals and the proprietary signals. See the KIO2 manual... http://www.elecraft.com/manual/KIO2%20man%20rev%20C%20.pdf ...beginning on page 12, for a description of the cord specifics. 73, Guy On Tue, Jan 20, 2015 at 6:58 AM, Kevin Schache hillsla...@internode.on.net wrote: I've successfully completed my K2 and tests appear ok. Added SSB board and that's ok too. Then built KAT100-1 an KAT102 and also tests ok., But now, connect to Computer and bother I didn't think to check! No serial connection on the computers What's the recommendation? An RS232 serial to USB adapter? Reading the archives it appears this could create problems. I've two computers, a desktop HP Compaq Presario and a laptop, SONY VAIO E series both running MSWindows V7, neither have serial ports. Any suggestions would be welcome. Thanks Kev VK5KS K2 #7552 __ 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 k2av@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 daywalker_blade_2...@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
[Elecraft] K3 keying/vox for digi
Hi Thanks for all the replies. I did not wish to explain why I do not want to use VOX for keying digi from the right channel tone. But as another has explained, the VOX setting needs to be different for Digi and phone, and I found it annoying having to fiddle through the menu after changing modes, and then there is the antivox also. Or remembering to turn it off, the risk of me transmitting some curse or other is too great!. VOX is a nice feature for some but I would rather do without it. Its a personal thing, not a technical issue. I only ever use it for heavy contesting, where both hands need to be free. Anyway, I have found what looks to be a good circuit in the fldigi manual.(thanks Joe) Chris VK2ACD __ 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] K1 For Sale, Excellent condition
Hi Guys, I have for sale an Elecraft K1 4 band rig in Excellent condition. This rig has very low hours on it and a higher SN in the 2700 range. The rig comes with the hard to find 4 band (40/30/20/15) module and the ATU (Antenna Tuner) installed. I will also throw in the constructed working 17/80 meter module as well! I have a small plug in power adapter to run the rig as a home station, and a double fused Anderson connector mobile adapter cable. A printed version of the build manual is also included. Construction of the rig was done by a very meticulous person and all of the coils and transformers were wound by a true professional. The rig TX and RX including its filters (200Hz-850 Hz) have all been recently tested on-air. TX bandpass has been tested at a +/- 10 Hz tone pitch center. This rig has been carefully stored in a protective box in a non-smoking, pet free environment . I'm asking $575.00 for the rig plus shipping. Shipping will be at actual cost via UPS or USPS (must be insured). If you are interested in purchasing the rig, would like to make an offer, or you would like more information and pictures, please feel free to email me off the reflector. Thanks, W6SFM my call @w6sfm .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] 222 MHz Transverter
Unfortunately this seems to be the case everywhere in the US. I may be the only one here in this part of Alaska with a 222 transverter (One other ham has done 222-eme so that's two). Most just buy a FM mobile or HT and get on 223.50 (Nat'l Simplex channel) or repeaters if they exist. But a comment about the 222 band: Too often it has the best propagation for long-range tropo contacts (bettering 2m quite often). Really a shame it is underutilized by hams. 73, Ed - KL7UW http://www.kl7uw.com Kits made by KL7UW Dubus Mag business: dubus...@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
[Elecraft] NAQCC Sprint Wednesday Night!
NAQCC Sprint Wednesday night! The January sprint is this coming Wednesday evening local time (January 21st, EST - 8:30-10:30PM, CST - 7:30-9:30PM, MST - 6:30-8:30PM, PST - 5:30-7:30PM), which translates as Thursday, January 22nd, 0130 to 0330Z in all cases. For all the official information, please go to: http://naqcc.info/sprint201501.html There you will find all the details as to time, frequencies and other important information. Certificates: SWA (simple wire antennas) certificates by call area, VE and DX for 1st, 2nd and 3rd place finishers (New!). A Certificate for top score in the GAIN antenna category. Prizes: Too many to list!! - check out the prizes page on our website. This is a monthly event that caters to the CW veteran, the CW newcomer, straight key and bug fans. All are welcome to participate (this includes QRO); but you must use QRP power levels to compete for awards. If you've been hesitant to join in our sprints because you hear other sprints running at breakneck speeds, have no fear. Our sprints are geared to the newcomer to CW and/or contesting. Virtually everyone including the many veteran contesters who regularly enter our sprints will slow down to YOUR speed to help you make your contacts. If you are not already a member of NAQCC... membership is FREE! Now is your chance to join the largest QRP CW Club in the world!! We currently have 7100+ members in: All 50 States - 9 VE Provinces - 100 Countries. Sign up on the NAQCC website today (http://naqcc.info/) and receive a handsome certificate, with your membership number on it, which is good for life. Come join us and have a real good time! 72/73 de Larry W2LJ NAQCC #35 for NAQCC http://naqcc.info/ --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.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] [Bulk] 8 or5 Pole cw filters
On Jan 13, 2015, at 10:52 PM, Mike Zbrozek k8...@verizon.net wrote: As a cw opr that is planning on buying a K3 next month I would like to know how many cw ops use/prefer 5 or 8 pole cw filters? Does anybody use the 1000 Hz 8 pole filter for hunting cq's then switch over to a 500 or 400 Hz filter? And how many cw ops use a sharper 200 or 250 Hz filter? Tnx in Advance Mike Zbrozek, K8XF I’m going to buck the trend a little bit. I only have one 8-pole filter — the 13 kHz FM filter. I see posts from a lot of guys who have a radio full of 8-pole filters. That’s nice — if you can afford it. Those filters are expensive. During the five years I spent dreaming of owning a K3, I had thought I only wanted to have the 8-pole filters. However, my wife (the best XYL ever!) ordered a very stock K3 for me for Christmas, and it came with the 2700 Hz (5-pole) filter. Swapping out this filter after the fact for the 2800 (8-pole) filter is even more expensive than ordering it in the first place. Because of the expense, I used the stock filter for about six months before contemplating anything. I bought the 13 kHz filter because it gave me FM and AM receive and transmit capability. I got the 500 Hz (5-pole) filter because someone offered it on this list at a greatly discounted price. The key thing to remember about the K3 is that the DSP IS your filter! You don’t have to buy any of those expensive crystal filters. PERIOD. The radio works great with just the stock filter. Do the expensive crystal filters make a difference? Yes. The 500 Hz filter makes a difference. I’ve got it configured to kick in at 450 Hz. There’s a distinct difference in the audio background noise switching to 450 from 500. During the 160m CW contest, this filter knocks down a lot of adjacent channel interference. I’m glad I have a narrow roofing filter available for CW, PSK and RTTY work. Bottom line — can you afford to put $700 (or $1400 if you buy the KRX3 option) worth of crystal filters in your radio? Yes? Good for you. No? Then the stock 5-pole filter works great. Splurge for the 500 Hz (5-pole) roofing filter instead of upgrading to the 2.8 kHz (8-pole) filter. PS - I just bought the KRX3 option and purchased it with the stock 2.7 kHz (5-pole) filter. I did spend the extra $30 to get a filter whose offset matches the offset of the filter in the main radio (-0.79). __ 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] [Bulk] 8 or5 Pole cw filters
On Jan 14, 2015, at 3:21 AM, Guy Olinger K2AV k2av@gmail.com wrote: I would note that in crowded contesting conditions, you pretty much have to use a filter which matches the DSP setting. What gets by the roofing filter can engage the defensive hardware AGC which is there to keep input to the analog to digital conversion in the sweet range of the AD device. This can become a problem with very loud signals right at the edge of the DSP passband, if the roofing filter is not close in bandwidth. I disagree with this assessment. The DSP filtering is quite good. You only have a problem with a wider roofing filter causing the hardware AGC pumping for extremely strong signals that happen to be within the bounds of the roofing filter, but outside the DSP filter. Unless the roofing filter is really wide (like using the 2.7 kHz filter in a CW contest) this doesn’t happen that often. I find the stock 2.7 kHz roofing filter more than adequate for SSB contesting, and the 500 Hz roofing filter perfect for CW and RTTY contesting. The K3 is a fantastic radio even if you don’t have a bunch of really expensive crystal filters…. Bill Coleman, AA4LR, PP-ASELMail: aa...@arrl.net Web: http://boringhamradiopart.blogspot.com Quote: Not within a thousand years will man ever fly! -- Wilbur Wright, 1901 __ 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] 222 MHz Transverter
I do a lot of VHF contesting in June and September and find 222 a great band that propagates very nicely. It's quieter than 2M during a contest allowing us to work weaker signals than we would be able to on 2M. We have worked well into the mid-west using Tropo but unfortunately the activity isn't what it could be. I wish more stations would invest in 222. 73, John N2HMM for W2LV FN21 -Original Message- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Edward R Cole Sent: Tuesday, January 20, 2015 4:14 PM To: Elecraft@mailman.qth.net Subject: Re: [Elecraft] 222 MHz Transverter Unfortunately this seems to be the case everywhere in the US. I may be the only one here in this part of Alaska with a 222 transverter (One other ham has done 222-eme so that's two). Most just buy a FM mobile or HT and get on 223.50 (Nat'l Simplex channel) or repeaters if they exist. But a comment about the 222 band: Too often it has the best propagation for long-range tropo contacts (bettering 2m quite often). Really a shame it is underutilized by hams. 73, Ed - KL7UW http://www.kl7uw.com Kits made by KL7UW Dubus Mag business: dubus...@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 u1004...@warwick.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] [Bulk] 8 or5 Pole cw filters
Bill, If you are not into 'hot and heavy' contesting or DXing in a pileup and/or diversity receive, you will find the 5 pole filters quite adequate. The problem is that the 8 pole filters have a better slope factor and do not have an offset. The offset is only important for diversity reception, and the slope factor is only important in situations where the band conditions are such that there are strong signals on adjacent frequencies -- as might be encountered in heavy contests or DX pileups. So if you are not interested in having the optimum receive capability in DX pileups and heavy contesting situations, save your $$$ and use the 5 pole filters. Some of us are more casual operators, and the $$$ savings can be significant. 73, Don W3FPR On 1/20/2015 11:17 PM, Bill Coleman wrote: On Jan 13, 2015, at 10:52 PM, Mike Zbrozek k8...@verizon.net wrote: As a cw opr that is planning on buying a K3 next month I would like to know how many cw ops use/prefer 5 or 8 pole cw filters? Does anybody use the 1000 Hz 8 pole filter for hunting cq's then switch over to a 500 or 400 Hz filter? And how many cw ops use a sharper 200 or 250 Hz filter? Tnx in Advance Mike Zbrozek, K8XF I’m going to buck the trend a little bit. I only have one 8-pole filter — the 13 kHz FM filter. I see posts from a lot of guys who have a radio full of 8-pole filters. That’s nice — if you can afford it. Those filters are expensive. During the five years I spent dreaming of owning a K3, I had thought I only wanted to have the 8-pole filters. However, my wife (the best XYL ever!) ordered a very stock K3 for me for Christmas, and it came with the 2700 Hz (5-pole) filter. Swapping out this filter after the fact for the 2800 (8-pole) filter is even more expensive than ordering it in the first place. Because of the expense, I used the stock filter for about six months before contemplating anything. I bought the 13 kHz filter because it gave me FM and AM receive and transmit capability. I got the 500 Hz (5-pole) filter because someone offered it on this list at a greatly discounted price. The key thing to remember about the K3 is that the DSP IS your filter! You don’t have to buy any of those expensive crystal filters. PERIOD. The radio works great with just the stock filter. Do the expensive crystal filters make a difference? Yes. The 500 Hz filter makes a difference. I’ve got it configured to kick in at 450 Hz. There’s a distinct difference in the audio background noise switching to 450 from 500. During the 160m CW contest, this filter knocks down a lot of adjacent channel interference. I’m glad I have a narrow roofing filter available for CW, PSK and RTTY work. __ 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] [Bulk] 8 or5 Pole cw filters
I'm a contester, so I have tight 8-pole filters. I've often advised those who are not contesters to go with no additional roofing filters and add only on the air experience has taught them that they need. Jim, I really hate to burst your bubble, you being a CONTESTER and all.However! On any given contest weekend, the Non Contester are the ones who really need theTight Filters because some inconsiderate holier than god contester will start calling CQ 1500 hz next to an existing QSO. (14.300) catches HELL during contest weekend. I'm really glad that you are a Contester, but I get the impression from your audacious statementthat if one is not among the coveted contesters then they would not know the need of such sophisticatedgadgetry. K2AV and I are both contesters (and engineers), and we have independently arrived at the same point. The level of Snobbery here has crested the previous water mark. I guess Ham Radio is only for CONTESTERS. Just my $0.02 worth. 73 Milverton / W9MMS From: Jim Brown j...@audiosystemsgroup.com To: elecraft@mailman.qth.net Sent: Wednesday, January 21, 2015 12:00 AM Subject: Re: [Elecraft] [Bulk] 8 or5 Pole cw filters On Tue,1/20/2015 9:23 PM, Don Wilhelm wrote: If you are not into 'hot and heavy' contesting or DXing in a pileup and/or diversity receive, you will find the 5 pole filters quite adequate. I agree completely. I'm a contester, so I have tight 8-pole filters. I've often advised those who are not contesters to go with no additional roofing filters and add only on the air experience has taught them that they need. K2AV and I are both contesters (and engineers), and we have independently arrived at the same point. 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] [Bulk] 8 or5 Pole cw filters
I use the 8 pole Xtal filter, and love it for CW... You are in for such a treat once you get your K3 going on CW... The rig is a wet dream for CW ops. -- 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 Tue, 2015-01-20 at 23:17 -0500, Bill Coleman wrote: On Jan 13, 2015, at 10:52 PM, Mike Zbrozek k8...@verizon.net wrote: As a cw opr that is planning on buying a K3 next month I would like to know how many cw ops use/prefer 5 or 8 pole cw filters? Does anybody use the 1000 Hz 8 pole filter for hunting cq's then switch over to a 500 or 400 Hz filter? And how many cw ops use a sharper 200 or 250 Hz filter? Tnx in Advance Mike Zbrozek, K8XF I’m going to buck the trend a little bit. I only have one 8-pole filter — the 13 kHz FM filter. I see posts from a lot of guys who have a radio full of 8-pole filters. That’s nice — if you can afford it. Those filters are expensive. During the five years I spent dreaming of owning a K3, I had thought I only wanted to have the 8-pole filters. However, my wife (the best XYL ever!) ordered a very stock K3 for me for Christmas, and it came with the 2700 Hz (5-pole) filter. Swapping out this filter after the fact for the 2800 (8-pole) filter is even more expensive than ordering it in the first place. Because of the expense, I used the stock filter for about six months before contemplating anything. I bought the 13 kHz filter because it gave me FM and AM receive and transmit capability. I got the 500 Hz (5-pole) filter because someone offered it on this list at a greatly discounted price. The key thing to remember about the K3 is that the DSP IS your filter! You don’t have to buy any of those expensive crystal filters. PERIOD. The radio works great with just the stock filter. Do the expensive crystal filters make a difference? Yes. The 500 Hz filter makes a difference. I’ve got it configured to kick in at 450 Hz. There’s a distinct difference in the audio background noise switching to 450 from 500. During the 160m CW contest, this filter knocks down a lot of adjacent channel interference. I’m glad I have a narrow roofing filter available for CW, PSK and RTTY work. Bottom line — can you afford to put $700 (or $1400 if you buy the KRX3 option) worth of crystal filters in your radio? Yes? Good for you. No? Then the stock 5-pole filter works great. Splurge for the 500 Hz (5-pole) roofing filter instead of upgrading to the 2.8 kHz (8-pole) filter. PS - I just bought the KRX3 option and purchased it with the stock 2.7 kHz (5-pole) filter. I did spend the extra $30 to get a filter whose offset matches the offset of the filter in the main radio (-0.79). __ 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] [Bulk] 8 or5 Pole cw filters
On Tue,1/20/2015 9:23 PM, Don Wilhelm wrote: If you are not into 'hot and heavy' contesting or DXing in a pileup and/or diversity receive, you will find the 5 pole filters quite adequate. I agree completely. I'm a contester, so I have tight 8-pole filters. I've often advised those who are not contesters to go with no additional roofing filters and add only on the air experience has taught them that they need. K2AV and I are both contesters (and engineers), and we have independently arrived at the same point. 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] [Bulk] 8 or5 Pole cw filters
Well let's be clear here... These are roofing filters, so you will only notice a difference in adjacent frequency rejection of loud signals... so if you live out in the country and don't have any loud stations near you, it’s not likely you will ever perceive a difference between 5 pole and 8 pole filters. So the decision is driven more by the degree of loud stations operating adjacent to you... than by the type of operating you do. Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois Owner – Operator Villa Grand Piton – J68HZ Soufriere, St. Lucia W.I. Rent it at: http://www.vrbo.com/487375 email: b...@wjschmidt.com -Original Message- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Don Wilhelm Sent: Tuesday, January 20, 2015 11:23 PM To: Bill Coleman; Mike Zbrozek Cc: Elecraft Subject: Re: [Elecraft] [Bulk] 8 or5 Pole cw filters Bill, If you are not into 'hot and heavy' contesting or DXing in a pileup and/or diversity receive, you will find the 5 pole filters quite adequate. The problem is that the 8 pole filters have a better slope factor and do not have an offset. The offset is only important for diversity reception, and the slope factor is only important in situations where the band conditions are such that there are strong signals on adjacent frequencies -- as might be encountered in heavy contests or DX pileups. So if you are not interested in having the optimum receive capability in DX pileups and heavy contesting situations, save your $$$ and use the 5 pole filters. Some of us are more casual operators, and the $$$ savings can be significant. 73, Don W3FPR On 1/20/2015 11:17 PM, Bill Coleman wrote: On Jan 13, 2015, at 10:52 PM, Mike Zbrozek k8...@verizon.net wrote: As a cw opr that is planning on buying a K3 next month I would like to know how many cw ops use/prefer 5 or 8 pole cw filters? Does anybody use the 1000 Hz 8 pole filter for hunting cq's then switch over to a 500 or 400 Hz filter? And how many cw ops use a sharper 200 or 250 Hz filter? Tnx in Advance Mike Zbrozek, K8XF I’m going to buck the trend a little bit. I only have one 8-pole filter — the 13 kHz FM filter. I see posts from a lot of guys who have a radio full of 8-pole filters. That’s nice — if you can afford it. Those filters are expensive. During the five years I spent dreaming of owning a K3, I had thought I only wanted to have the 8-pole filters. However, my wife (the best XYL ever!) ordered a very stock K3 for me for Christmas, and it came with the 2700 Hz (5-pole) filter. Swapping out this filter after the fact for the 2800 (8-pole) filter is even more expensive than ordering it in the first place. Because of the expense, I used the stock filter for about six months before contemplating anything. I bought the 13 kHz filter because it gave me FM and AM receive and transmit capability. I got the 500 Hz (5-pole) filter because someone offered it on this list at a greatly discounted price. The key thing to remember about the K3 is that the DSP IS your filter! You don’t have to buy any of those expensive crystal filters. PERIOD. The radio works great with just the stock filter. Do the expensive crystal filters make a difference? Yes. The 500 Hz filter makes a difference. I’ve got it configured to kick in at 450 Hz. There’s a distinct difference in the audio background noise switching to 450 from 500. During the 160m CW contest, this filter knocks down a lot of adjacent channel interference. I’m glad I have a narrow roofing filter available for CW, PSK and RTTY work. __ 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 b...@wjschmidt.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
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
[Elecraft] K3 Low output 30m
My K3 has always had low output on 30m (ca 90 watts). I checked the TXG (transmit gain) figures and 40m is 64, 30m is 103 and 20m is 30. The K3 uses the same lowpass filter on 30 and 40m. Is it possible mine rolls off too quickly at the low end? 73, Roger N1RJ __ 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
