Re: [Elecraft] K3 and VB6
It's been this way since the first ham hooked a radio up to a windows serial port. It's not a radio issue it's an computer issue. Linux does it too. I reboot my computers once a week whether they need it or not. Same with the radiosthey just get turned back on when the computer is up at a desktop. On 10/12/2014 6:47 PM, Don Wilhelm wrote: All, While Joe's response will eliminate the behavior, I feel that a fuller explanation is in order. When a computer boots, it will exercise the RS-232 signal lines including the RTS and DTR signal lines. If you have your K3 set to do keying or PTT with those lines, you can expect the K3 to go into transmit while the computer does its boot-up. So, take your choices - if you have no need for DTR/RTS keying of the K3, turn the PTT-KEY menu to OFF-OFF as Joe indicated, but if you have need for computer control of the PTT or Keying of the K3 via the DTR or RTS signals, then expect that behavior and either place the K3 into TX TEST or switch to a dummy load while the computer is doing its diagnostics during the boot-up cycle. 73, Don W3FPR -- R. Kevin Stover AC0H ARRL FISTS #11993 SKCC #215 NAQCC #3441 __ 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 and VB6
Maybe the TX inhibit function can help in this case. You don't have to modify your settings in your radio or modify the computer. http://www.kl7uw.com/TX-INHIBIT.htm 73, Thomas DM7TN -Original-Nachricht- Betreff: Re: [Elecraft] K3 and VB6 Datum: Mon, 13 Oct 2014 16:00:38 +0200 Von: Kevin Stover kevin.sto...@mediacombb.net An: elecraft@mailman.qth.net It's been this way since the first ham hooked a radio up to a windows serial port. It's not a radio issue it's an computer issue. Linux does it too. I reboot my computers once a week whether they need it or not. Same with the radiosthey just get turned back on when the computer is up at a desktop. On 10/12/2014 6:47 PM, Don Wilhelm wrote: All, While Joe's response will eliminate the behavior, I feel that a fuller explanation is in order. When a computer boots, it will exercise the RS-232 signal lines including the RTS and DTR signal lines. If you have your K3 set to do keying or PTT with those lines, you can expect the K3 to go into transmit while the computer does its boot-up. So, take your choices - if you have no need for DTR/RTS keying of the K3, turn the PTT-KEY menu to OFF-OFF as Joe indicated, but if you have need for computer control of the PTT or Keying of the K3 via the DTR or RTS signals, then expect that behavior and either place the K3 into TX TEST or switch to a dummy load while the computer is doing its diagnostics during the boot-up cycle. 73, Don W3FPR -- R. Kevin Stover AC0H ARRL FISTS #11993 SKCC #215 NAQCC #3441 __ 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 thomas.no...@t-online.de __ 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] Noise from Israel
Folks - political comments on the Elecraft reflector are inappropriate and are prohibited. Please take that part of the discussion elsewhere. This part of the thread is now closed. Eric List Moderator elecraft.com --- Sent from my iPhone 5S On Oct 12, 2014, at 1:55 PM, Tom Fitzgerald via Elecraft elecraft@mailman.qth.net wrote: Since getting on the air from Israel I notice an interesting noise... Hm...indeed? Yeah...I hear a lot of noise from Israel too. __ 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] BNCs
On Sun,10/12/2014 6:32 PM, Acbross via Elecraft wrote: Don't know where anyone got the idea that BNCs made for RG-8x we 75 ohm. I worked in the tv industry for many years and we used hundreds of BNCs that were made specifically for 75 ohm video. By the way, RG-59 not RG-79. While you are entirely correct that there are 75 ohm and 50 ohm BNCs, the difference DOES NOT MATTER at HF, because the connector is such a small fraction of a wavelength and the difference is small. 75 ohm connectors were important with analog video because of the smearing of very fine detail in a high res image, and because studios do lots of patching and routing. 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] BNCs
Thanks Jim I was going to ask that exact question. For the amateur world, does it make a difference if a 75 ohm connector is installed on a 50 ohm feedline. You made it very clear for everyone. Thanks! Mike va3mw On Mon, Oct 13, 2014 at 12:15 PM, Jim Brown j...@audiosystemsgroup.com wrote: On Sun,10/12/2014 6:32 PM, Acbross via Elecraft wrote: Don't know where anyone got the idea that BNCs made for RG-8x we 75 ohm. I worked in the tv industry for many years and we used hundreds of BNCs that were made specifically for 75 ohm video. By the way, RG-59 not RG-79. While you are entirely correct that there are 75 ohm and 50 ohm BNCs, the difference DOES NOT MATTER at HF, because the connector is such a small fraction of a wavelength and the difference is small. 75 ohm connectors were important with analog video because of the smearing of very fine detail in a high res image, and because studios do lots of patching and routing. 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 va...@portcredit.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] BNCs
Jim, It may not make a difference to performance on HF but it does matter because the centre pins have different diameters of solder pot / crimp barrel to match the cable impedance used. Also incorrectly mated connectors risk damage to their centre connectors by forcing the engagement. Use the correct connector for the cable in use. 73 Peter G3SMT On 13/10/2014 16:15, Jim Brown wrote: On Sun,10/12/2014 6:32 PM, Acbross via Elecraft wrote: Don't know where anyone got the idea that BNCs made for RG-8x we 75 ohm. I worked in the tv industry for many years and we used hundreds of BNCs that were made specifically for 75 ohm video. By the way, RG-59 not RG-79. While you are entirely correct that there are 75 ohm and 50 ohm BNCs, the difference DOES NOT MATTER at HF, because the connector is such a small fraction of a wavelength and the difference is small. 75 ohm connectors were important with analog video because of the smearing of very fine detail in a high res image, and because studios do lots of patching and routing. 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 peter.to...@talktalk.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] BNCs
Peter The larger concern is that most of us have no way of being able to tell the difference from a 50 ohm bnc to a 75 ohm bnc. We buy these online and at flee markets, which is part of the reality. Is there an easy way to tell them apart? I assume the same is also true for N connectors which are essentially a BNC but with a different casing. Mike va3mw On Mon, Oct 13, 2014 at 12:30 PM, Peter Torry peter.to...@talktalk.net wrote: Jim, It may not make a difference to performance on HF but it does matter because the centre pins have different diameters of solder pot / crimp barrel to match the cable impedance used. Also incorrectly mated connectors risk damage to their centre connectors by forcing the engagement. Use the correct connector for the cable in use. 73 Peter G3SMT On 13/10/2014 16:15, Jim Brown wrote: On Sun,10/12/2014 6:32 PM, Acbross via Elecraft wrote: Don't know where anyone got the idea that BNCs made for RG-8x we 75 ohm. I worked in the tv industry for many years and we used hundreds of BNCs that were made specifically for 75 ohm video. By the way, RG-59 not RG-79. While you are entirely correct that there are 75 ohm and 50 ohm BNCs, the difference DOES NOT MATTER at HF, because the connector is such a small fraction of a wavelength and the difference is small. 75 ohm connectors were important with analog video because of the smearing of very fine detail in a high res image, and because studios do lots of patching and routing. 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 peter.to...@talktalk.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 va...@portcredit.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] BNCs
On Mon,10/13/2014 9:30 AM, Peter Torry wrote: It may not make a difference to performance on HF but it does matter because the centre pins have different diameters of solder pot / crimp barrel to match the cable impedance used. What matters is that the connector match the physical dimensions of the cable so that it can be properly installed, and this is true regardless of impedance. Also incorrectly mated connectors risk damage to their centre connectors by forcing the engagement. Use the correct connector for the cable in use. Zo depends upon o.d. of the center conductor with the connectors mated, and would be established by the o.d. of the female pin receptacle, not the o.d. of the male tip. Although I have not studied the mechanical Standard for 75 ohm BNCs, I would VERY surprised if the dimensions of a proper 75 ohm connector would prevent it from mating with a proper 50 ohm connector. Have you studied such a spec? I'm quite active in international Standards work (with the AES) and that sort of incompatibility is something we make certain to avoid! 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] BNCs
On Mon 13 Oct Jim Brown wrote: the o.d. of the male tip. Although I have not studied the mechanical Standard for 75 ohm BNCs, I would VERY surprised if the dimensions of a proper 75 ohm connector would prevent it from mating with a proper 50 ohm connector. Have you studied such a spec? I'm quite active in international Standards work (with the AES) and that sort of incompatibility is something we make certain to avoid! It's certainly possible, given a 75 Ohm male connector and a 50 Ohn female connector, to end up without good electrical contact on the central conductor, especially if you're dealing with cheap plugs and sockets. Been there, suffered the consequences. -- 73, Rick, M0LEP (KX3 #3281) __ 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] BNCs
YES The 75 ohm series are UG-260/U connectors, the 50 ohm series is the UG-88/U. If they don't have this stamped into the rear barrel of the connector, THEY ARE Counterfeits or JUST PLAIN TRASH! There is a lot of crap parts available at hamfests these days! Be careful what you buy!! 73, Sandy W5TVW On 10/13/2014 11:18 AM, Michael Walker wrote: Thanks Jim I was going to ask that exact question. For the amateur world, does it make a difference if a 75 ohm connector is installed on a 50 ohm feedline. You made it very clear for everyone. Thanks! Mike va3mw On Mon, Oct 13, 2014 at 12:15 PM, Jim Brown j...@audiosystemsgroup.com wrote: On Sun,10/12/2014 6:32 PM, Acbross via Elecraft wrote: Don't know where anyone got the idea that BNCs made for RG-8x we 75 ohm. I worked in the tv industry for many years and we used hundreds of BNCs that were made specifically for 75 ohm video. By the way, RG-59 not RG-79. While you are entirely correct that there are 75 ohm and 50 ohm BNCs, the difference DOES NOT MATTER at HF, because the connector is such a small fraction of a wavelength and the difference is small. 75 ohm connectors were important with analog video because of the smearing of very fine detail in a high res image, and because studios do lots of patching and routing. 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 va...@portcredit.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 ebj...@charter.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] BNCs
The big difference of the 75 and 50 ohm connectors is the fit of the connectors to the coax size, NOT the center pin size which is the same. BNC connectors are really NOT constant impedance especially at VHF/UHF frequencies like proper N series connectors are. This makes no difference impedance wise on HF gear. I guess this is also why no one has standardized on a better connector for the HF frequency range instead of the PL-259/SO-239impedance bumps! 73, Sandy W5TVW On 10/12/2014 8:32 PM, Acbross via Elecraft wrote: Don't know where anyone got the idea that BNCs made for RG-8x we 75 ohm. I worked in the tv industry for many years and we used hundreds of BNCs that were made specifically for 75 ohm video. By the way, RG-59 not RG-79. Now days I build hundreds of cables for RF out of rg-58 and rg-8x BNCs and they use 50 ohm connectors not 75 ohm connectors. Remember that the impedance of coax is based on the ratio of the center conductor to the outer conductor and if you compare the 75 ohm connector you will see that the center pin is much smaller in diameter. Anyone need 200 silver plated 75 ohm BNCs? Art KC7GF Rf Stuff.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 ebj...@charter.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] BNCs
On Mon,10/13/2014 10:34 AM, Rick M0LEP wrote: especially if you're dealing with cheap plugs and sockets. From my work on the AES Standards Committee Working Group on Connectors, I can tell you that junk and even counterfeit connectors are the problem, not the nominal Zo. Junk connectors of any sort are a constant source of problems. Only a fool buys anything but name brand connectors. This applies to ALL connector types -- UHF, BNC, RCA, DIN, XLR, 1/8-in, 1/4-in. For UHF, this means Amphenol. For XLR, RCA, 1/8-in, and 1/4-in this means Switchcraft and Neutrik. For DIN, that means Switchcraft and Preh. I don't work enough with BNCs to know the good mfrs. 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 and VB6
OS X doesn't do it. Rick K6LE On Mon, Oct 13, 2014 at 7:00 AM, Kevin Stover kevin.sto...@mediacombb.net wrote: It's been this way since the first ham hooked a radio up to a windows serial port. It's not a radio issue it's an computer issue. Linux does it too. I reboot my computers once a week whether they need it or not. Same with the radiosthey just get turned back on when the computer is up at a desktop. On 10/12/2014 6:47 PM, Don Wilhelm wrote: All, While Joe's response will eliminate the behavior, I feel that a fuller explanation is in order. When a computer boots, it will exercise the RS-232 signal lines including the RTS and DTR signal lines. If you have your K3 set to do keying or PTT with those lines, you can expect the K3 to go into transmit while the computer does its boot-up. So, take your choices - if you have no need for DTR/RTS keying of the K3, turn the PTT-KEY menu to OFF-OFF as Joe indicated, but if you have need for computer control of the PTT or Keying of the K3 via the DTR or RTS signals, then expect that behavior and either place the K3 into TX TEST or switch to a dummy load while the computer is doing its diagnostics during the boot-up cycle. 73, Don W3FPR -- R. Kevin Stover AC0H ARRL FISTS #11993 SKCC #215 NAQCC #3441 __ 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 rick.prat...@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] BNCs
Jim - Good quality BNC connectors can be had from Amphenol and AMP. I normally use AMP crimp-type connectors for BNC applications, have _never_ had one fail, and I purchase them by the hundreds. Takes only a few seconds to install one. One other good supplier of RF connectors is Kings. It has been a few years since I had to buy any, so I am assuming these suppliers still exist. Having the correct tools to install these connectors is not a luxury, and yes, they are expensive. Here again, you tend to get what you pay for. And you are correct, money spent on a good quality connector is never wasted. On the other hand, money spent on a cheap connector is almost always wasted. - Jim, KL7CC On 10/13/2014 10:03 AM, Jim Brown wrote: On Mon,10/13/2014 10:34 AM, Rick M0LEP wrote: especially if you're dealing with cheap plugs and sockets. From my work on the AES Standards Committee Working Group on Connectors, I can tell you that junk and even counterfeit connectors are the problem, not the nominal Zo. Junk connectors of any sort are a constant source of problems. Only a fool buys anything but name brand connectors. This applies to ALL connector types -- UHF, BNC, RCA, DIN, XLR, 1/8-in, 1/4-in. For UHF, this means Amphenol. For XLR, RCA, 1/8-in, and 1/4-in this means Switchcraft and Neutrik. For DIN, that means Switchcraft and Preh. I don't work enough with BNCs to know the good mfrs. 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 jwi...@gci.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 and VB6
I think exercise is the wrong term. You're talking about hardware (the serial port) and how it behaves before it is initialized. Saying that the OS has anything to do with how a port behaves before the OS boots is a bit questionable. It's possible that Apple's hardware behaves consistently on power-up -- I'd believe that. Apple operating systems don't have to contend with the same amount of random hardware. 73 -- Lynn On 10/13/2014 11:09 AM, Rick Prather wrote: OS X doesn't do it. Rick K6LE On Mon, Oct 13, 2014 at 7:00 AM, Kevin Stover kevin.sto...@mediacombb.net wrote: It's been this way since the first ham hooked a radio up to a windows serial port. It's not a radio issue it's an computer issue. Linux does it too. I reboot my computers once a week whether they need it or not. Same with the radiosthey just get turned back on when the computer is up at a desktop. On 10/12/2014 6:47 PM, Don Wilhelm wrote: All, While Joe's response will eliminate the behavior, I feel that a fuller explanation is in order. When a computer boots, it will exercise the RS-232 signal lines including the RTS and DTR signal lines. If you have your K3 set to do keying or PTT with those lines, you can expect the K3 to go into transmit while the computer does its boot-up. So, take your choices - if you have no need for DTR/RTS keying of the K3, turn the PTT-KEY menu to OFF-OFF as Joe indicated, but if you have need for computer control of the PTT or Keying of the K3 via the DTR or RTS signals, then expect that behavior and either place the K3 into TX TEST or switch to a dummy load while the computer is doing its diagnostics during the boot-up cycle. 73, Don W3FPR -- R. Kevin Stover AC0H ARRL FISTS #11993 SKCC #215 NAQCC #3441 __ 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 rick.prat...@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 k...@coldrockshotbrooms.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] BNCs
While you are entirely correct that there are 75 ohm and 50 ohm BNCs, the difference DOES NOT MATTER at HF, because the connector is such a small fraction of a wavelength and the difference is small. I disagree ... *DO NOT MIX 75 and 50 Ohm connectors*. 50 Ohm male connectors will split the center contact of a 75 Ohm female wile 75 Ohm male connectors will not make reliable connection with the center contact of a 50 Ohm female. In general, a 75 Ohm center pin will not accept the center conductor of 50 Ohm cable and a 50 Ohm center pin can not be *reliably* attached (either crimp or solder) to the smaller center conductor of 75 Ohm cable due to the relative sizes. 73, ... Joe, W4TV On 2014-10-13 12:15 PM, Jim Brown wrote: On Sun,10/12/2014 6:32 PM, Acbross via Elecraft wrote: Don't know where anyone got the idea that BNCs made for RG-8x we 75 ohm. I worked in the tv industry for many years and we used hundreds of BNCs that were made specifically for 75 ohm video. By the way, RG-59 not RG-79. While you are entirely correct that there are 75 ohm and 50 ohm BNCs, the difference DOES NOT MATTER at HF, because the connector is such a small fraction of a wavelength and the difference is small. 75 ohm connectors were important with analog video because of the smearing of very fine detail in a high res image, and because studios do lots of patching and routing. 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 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
Re: [Elecraft] BNCs
Although I have not studied the mechanical Standard for 75 ohm BNCs, I would VERY surprised if the dimensions of a proper 75 ohm connector would prevent it from mating with a proper 50 ohm connector. Have you studied such a spec? Yes, I have used both in the TV stations - 50 Ohm for RF systems and 75 for video systems. The center pin (male) and contact (female) *ARE DIFFERENT SIZE*. Forcing a 50 Ohm connector into a 75 Ohm socket will split the center contact while putting a 75 Ohm connector into a 50 Ohm socket will result in insufficient tension on the center pin (and unreliable contact). 73, ... Joe, W4TV On 2014-10-13 12:45 PM, Jim Brown wrote: On Mon,10/13/2014 9:30 AM, Peter Torry wrote: It may not make a difference to performance on HF but it does matter because the centre pins have different diameters of solder pot / crimp barrel to match the cable impedance used. What matters is that the connector match the physical dimensions of the cable so that it can be properly installed, and this is true regardless of impedance. Also incorrectly mated connectors risk damage to their centre connectors by forcing the engagement. Use the correct connector for the cable in use. Zo depends upon o.d. of the center conductor with the connectors mated, and would be established by the o.d. of the female pin receptacle, not the o.d. of the male tip. Although I have not studied the mechanical Standard for 75 ohm BNCs, I would VERY surprised if the dimensions of a proper 75 ohm connector would prevent it from mating with a proper 50 ohm connector. Have you studied such a spec? I'm quite active in international Standards work (with the AES) and that sort of incompatibility is something we make certain to avoid! 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 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] K3EXREF Query
I was wondering if there is any kind of sensibility check done on the input reference? For example, I've been fooling around with a double oven controlled XO. Starting from cold it is 200Hz off. It takes ten minutes or so to be within 10 Hz. It gets into the tenths of Hz accuracy region in another 10 minutes. Clearly one would not want the K3EXREF to lock to this oscillator during the first 10 minutes or so. 73 de Brian/K3KO __ 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/MMTTY/Signalink Problem
I am having problems getting MMTTY to transmitproperly using K3 with a Signalink USB interface. Currently, when I go to TX in MMTTY, I get red TXlight on Signalink, a red TX light on K3, I hear diddles coming out of theSignalink rear monitor jack, and I seemovement on Vu meter in Windows sound playback tab. BUT I get no RF out on K3 RFmeter, no movement on K3 ALC meter and I am not hearing any diddles. - PC is Win 7 64 bit, i5 3.5ghz processor, 16gbof ram - My K3, Signalink, PC setup is working finewith DM780 PSK31, JT65HF, WSPR and WSJT-X. Would appreciate talking to someone who hasMMTTY running successfully using K3 witha Signalink USB to share setup information. Tnx 73 Paul __ 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 and VB6
It happens after the BIOS hands off to the OS, it is OS specific. The easiest fix is turn the radio on after the OS has started. On 10/13/2014 1:23 PM, Lynn W. Taylor, WB6UUT wrote: I think exercise is the wrong term. You're talking about hardware (the serial port) and how it behaves before it is initialized. Saying that the OS has anything to do with how a port behaves before the OS boots is a bit questionable. It's possible that Apple's hardware behaves consistently on power-up -- I'd believe that. Apple operating systems don't have to contend with the same amount of random hardware. 73 -- Lynn -- R. Kevin Stover AC0H ARRL FISTS #11993 SKCC #215 NAQCC #3441 __ 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] BNCs
According to the specs in the RF Industires catalog, pages 7 and 14 in the version I have here, the center pins of 50 ohm and 75 ohm BNC's are indeed the same size: .053 +/-.001 inch. The difference is Zo is generated by using dielectric in the 50 ohm but none in the 75 ohm, and slight difference in the inside dimensions of the plus and sockets. It is a little hard to tell from the drawings whether or not you can plug a 50 into 75, and vise versa, with no issues. Although the pins are the same size, there is a slight difference in the inside diameters and the depths of the two fittings are different. This is complicated by the fact that the 50 and 75 ohm fittings use different reference planes to make the measurements. The catalog is available on the RF Industries web site. 73 de dave ab9ca/4 On 10/13/14 1:32 PM, Joe Subich, W4TV wrote: While you are entirely correct that there are 75 ohm and 50 ohm BNCs, the difference DOES NOT MATTER at HF, because the connector is such a small fraction of a wavelength and the difference is small. I disagree ... *DO NOT MIX 75 and 50 Ohm connectors*. 50 Ohm male connectors will split the center contact of a 75 Ohm female wile 75 Ohm male connectors will not make reliable connection with the center contact of a 50 Ohm female. In general, a 75 Ohm center pin will not accept the center conductor of 50 Ohm cable and a 50 Ohm center pin can not be *reliably* attached (either crimp or solder) to the smaller center conductor of 75 Ohm cable due to the relative sizes. 73, ... Joe, W4TV On 2014-10-13 12:15 PM, Jim Brown wrote: On Sun,10/12/2014 6:32 PM, Acbross via Elecraft wrote: Don't know where anyone got the idea that BNCs made for RG-8x we 75 ohm. I worked in the tv industry for many years and we used hundreds of BNCs that were made specifically for 75 ohm video. By the way, RG-59 not RG-79. While you are entirely correct that there are 75 ohm and 50 ohm BNCs, the difference DOES NOT MATTER at HF, because the connector is such a small fraction of a wavelength and the difference is small. 75 ohm connectors were important with analog video because of the smearing of very fine detail in a high res image, and because studios do lots of patching and routing. 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 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 ho13d...@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] BNCs
According to the specs in the RF Industries catalog, pages 7 and 14 in the version I have here, the center pins of 50 ohm and 75 ohm BNC's are indeed the same size: .053 +/-.001 inch. The difference is Zo is generated by using dielectric in the 50 ohm but none in the 75 ohm, and slight difference in the inside dimensions of the plugs and sockets. It is a little hard to tell from the drawings whether or not you can plug a 50 into 75, and vise versa, with no issues. Although the pins are the same size, there is a slight difference in the inside diameters and the depths of the two fittings are different. This is complicated by the fact that the 50 and 75 ohm fittings use different reference planes to make the measurements. The catalog is available on the RF Industries web site. 73 de dave ab9ca/4 On 10/13/14 1:32 PM, Joe Subich, W4TV wrote: While you are entirely correct that there are 75 ohm and 50 ohm BNCs, the difference DOES NOT MATTER at HF, because the connector is such a small fraction of a wavelength and the difference is small. I disagree ... *DO NOT MIX 75 and 50 Ohm connectors*. 50 Ohm male connectors will split the center contact of a 75 Ohm female wile 75 Ohm male connectors will not make reliable connection with the center contact of a 50 Ohm female. In general, a 75 Ohm center pin will not accept the center conductor of 50 Ohm cable and a 50 Ohm center pin can not be *reliably* attached (either crimp or solder) to the smaller center conductor of 75 Ohm cable due to the relative sizes. 73, ... Joe, W4TV On 2014-10-13 12:15 PM, Jim Brown wrote: On Sun,10/12/2014 6:32 PM, Acbross via Elecraft wrote: Don't know where anyone got the idea that BNCs made for RG-8x we 75 ohm. I worked in the tv industry for many years and we used hundreds of BNCs that were made specifically for 75 ohm video. By the way, RG-59 not RG-79. While you are entirely correct that there are 75 ohm and 50 ohm BNCs, the difference DOES NOT MATTER at HF, because the connector is such a small fraction of a wavelength and the difference is small. 75 ohm connectors were important with analog video because of the smearing of very fine detail in a high res image, and because studios do lots of patching and routing. 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 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 ho13d...@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] BNCs
Hello Jim, I quite agree that what matters is that the connector match the physical dimensions of the cable. Originally they didn't mate, 50 Ohm was 50 Ohm and 75 was 75.The pins were different diameters, and there were warranty warnings to only use the correct connectors with equipment such as the old Tek 475 scope. A 50 Ohm plug would damage a 75 Ohm socket. Now modern BNC connectors don't quite make their correct impedance characteristics but will physically mate with each other without mechanical issue if made to IEC 169-8. The electrical characteristics vary between the different impedances and one should be wary of the 93 R variety. I understand in the US MIL-STD 348B is similar but doesn't state the Zo.Then we have the far eastern manufacturers that appear to be slightly different again. All in all a bit of a nightmare so that was why I suggested being careful in selection and using branded connectors from a reputable manufacturer. On the Elecraft front my Def Spec connector doesn't mate correctly with the BNC socket on the rear panel of the K3. I think I had better retire to a dark room. 73 PeterG3SMT On 13/10/2014 16:45, Jim Brown wrote: On Mon,10/13/2014 9:30 AM, Peter Torry wrote: It may not make a difference to performance on HF but it does matter because the centre pins have different diameters of solder pot / crimp barrel to match the cable impedance used. What matters is that the connector match the physical dimensions of the cable so that it can be properly installed, and this is true regardless of impedance. Also incorrectly mated connectors risk damage to their centre connectors by forcing the engagement. Use the correct connector for the cable in use. Zo depends upon o.d. of the center conductor with the connectors mated, and would be established by the o.d. of the female pin receptacle, not the o.d. of the male tip. Although I have not studied the mechanical Standard for 75 ohm BNCs, I would VERY surprised if the dimensions of a proper 75 ohm connector would prevent it from mating with a proper 50 ohm connector. Have you studied such a spec? I'm quite active in international Standards work (with the AES) and that sort of incompatibility is something we make certain to avoid! 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] BNCs
All, And while the pin/receptacle dimensions are important to maintain physical integrity, the characteristic impedance doesn't come into play unless you experience a considerable phase length such as a 30 degree discontinuity at a given frequency. So at HF the phase length of the 70-50 Ω discontinuity experienced by a BNC connector (or any other impedance) is very short. Important at UHF, yes, important at HF, nope. Myron WVØH Printed on Recycled Data On Oct 13, 2014, at 12:36 PM, Joe Subich, W4TV li...@subich.com wrote: and unreliable contact). __ 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] BNCs
On 10/13/2014 10:42 AM, Sandy Blaize wrote: There is a lot of crap parts available at hamfests these days! Be careful what you buy!! Had cable problems with P3 when I first got it. Bob, K6XX, at Elecraft and who I know well called me and said [only slightly tongue-in-cheek] they'd send me a replacement cable ... *if* I promised to cut the old one in small pieces and bury it at the bottom of our trash can so it never could appear at a ham swap. :-) I did. If you want connectors that fit, and that work all the time, you'll need to totally avoid the cheap stuff. I use only Amphenol coax connectors. 73, Fred K6DGW - Northern California Contest Club - CU in the 2015 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] BNCs
The practical answer is try to insert your coax into the bushing. RG-59 and RG8X are the same size and RG-58 is smaller. If RG-58 is sloppy in the bushing and RG-59 or RG8X fits then it is OK to use unless you are trying to get an exact match for micro-wave. If you are a micro-wave engineer you are more qualified than I, but for 6 meters and below the extremely small bump will not be noticeable. You are jousting windmills to avoid an impedence bump that you cannot see. Willis 'Cookie' Cooke, TDXS DX Chairman K5EWJ Trustee N5BPS, USS Cavalla, USS Stewart On Monday, October 13, 2014 12:42 PM, Sandy Blaize ebj...@charter.net wrote: YES The 75 ohm series are UG-260/U connectors, the 50 ohm series is the UG-88/U. If they don't have this stamped into the rear barrel of the connector, THEY ARE Counterfeits or JUST PLAIN TRASH! There is a lot of crap parts available at hamfests these days! Be careful what you buy!! 73, Sandy W5TVW On 10/13/2014 11:18 AM, Michael Walker wrote: Thanks Jim I was going to ask that exact question. For the amateur world, does it make a difference if a 75 ohm connector is installed on a 50 ohm feedline. You made it very clear for everyone. Thanks! Mike va3mw On Mon, Oct 13, 2014 at 12:15 PM, Jim Brown j...@audiosystemsgroup.com wrote: On Sun,10/12/2014 6:32 PM, Acbross via Elecraft wrote: Don't know where anyone got the idea that BNCs made for RG-8x we 75 ohm. I worked in the tv industry for many years and we used hundreds of BNCs that were made specifically for 75 ohm video. By the way, RG-59 not RG-79. While you are entirely correct that there are 75 ohm and 50 ohm BNCs, the difference DOES NOT MATTER at HF, because the connector is such a small fraction of a wavelength and the difference is small. 75 ohm connectors were important with analog video because of the smearing of very fine detail in a high res image, and because studios do lots of patching and routing. 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 va...@portcredit.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 ebj...@charter.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 wrco...@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] BNCs Enough!
Without sounding my horn too loudly I have servered on IEEE connector committees and been paid big bucks to solve the production line problems. Counterfet connectors is too mild a term. There is some real crap out there and your eyeballs won't be able to detect it. Things like finish and and spring tention problems can not be seen. I recall one particular connector that was causing a 2db measured loss over a prefered Kings or Amphenol connector. The imported brand X connector was available in both 50 and 75 ohm versions, both of which were unmarked. When actually measured with a TDR they both measured 62 ohms. Folks, life is too short to mess with S T U F F like this. Do you really have to touch the wet paint or believe the sign. 73, Fred, AE6QL -Original Message- From: Fred Jensen k6...@foothill.net Sent: Oct 13, 2014 12:49 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] BNCs On 10/13/2014 10:42 AM, Sandy Blaize wrote: There is a lot of crap parts available at hamfests these days! Be careful what you buy!! Had cable problems with P3 when I first got it. Bob, K6XX, at Elecraft and who I know well called me and said [only slightly tongue-in-cheek] they'd send me a replacement cable ... *if* I promised to cut the old one in small pieces and bury it at the bottom of our trash can so it never could appear at a ham swap. :-) I did. If you want connectors that fit, and that work all the time, you'll need to totally avoid the cheap stuff. I use only Amphenol coax connectors. 73, Fred K6DGW - Northern California Contest Club - CU in the 2015 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 fptowns...@earthlink.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/MMTTY/Signalink Problem
Hi Paul, Although I do not use MMTTY , the fact that you have the lights and TX on the k3 working suggests that the ptt function (or VOX) is correct. The fact that all of the other software is working suggests that something related to the sound card settings in MMTTY is incorrect. Perhaps it has its own level controls or you have the wrong i/o settings. Can you receive correctly? Have you set the input on the k3 to the line in? Hope this helps. 73's Tom va2fsq.com On Oct 13, 2014 2:50 PM, paul ecker via Elecraft elecraft@mailman.qth.net wrote: I am having problems getting MMTTY to transmitproperly using K3 with a Signalink USB interface. Currently, when I go to TX in MMTTY, I get red TXlight on Signalink, a red TX light on K3, I hear diddles coming out of theSignalink rear monitor jack, and I seemovement on Vu meter in Windows sound playback tab. BUT I get no RF out on K3 RFmeter, no movement on K3 ALC meter and I am not hearing any diddles. - PC is Win 7 64 bit, i5 3.5ghz processor, 16gbof ram - My K3, Signalink, PC setup is working finewith DM780 PSK31, JT65HF, WSPR and WSJT-X. Would appreciate talking to someone who hasMMTTY running successfully using K3 witha Signalink USB to share setup information. Tnx 73 Paul __ 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 tom...@videotron.ca __ 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] 10 MHz GPS Disciplined Oscillator
For users of the K3EXREF high-stability option, I have listed a Trimble Thunderbolt GPSDO package on QTH today. 73, geo - n4ua __ 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] BNC v TNC
Hi Fred I wonder if you have come across counterfeit TNC connectors. I would guess that since these are not used in the mass computer industry then there is less incentive for the counterfeiters to be interested. The BNC is most interesting because it's so easy to connect and disconnect, but for me it's a size issue and I prefer the *improved* water resistance of the TNC. I left a mated pair out in a heavy downpour recently and found no water ingress. If I were doing it properly I would apply a little Vaseline petroleum jelly on the thread. David G3UNA Without sounding my horn too loudly I have servered on IEEE connector committees and been paid big bucks to solve the production line problems. Counterfet connectors is too mild a term. There is some real crap out there and your eyeballs won't be able to detect it. Things like finish and and spring tention problems can not be seen. I recall one particular connector that was causing a 2db measured loss over a prefered Kings or Amphenol connector. The imported brand X connector was available in both 50 and 75 ohm versions, both of which were unmarked. When actually measured with a TDR they both measured 62 ohms. Folks, life is too short to mess with S T U F F like this. Do you really have to touch the wet paint or believe the sign. 73, Fred, AE6QL __ 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/MMTTY/Signalink Problem
Paul, How many bars are being illuminated on the K3 ALC meter? If you do not have 4 bars illuminated with the 5th bar flickering, you do not have enough audio drive. If you are using the K3 Line In, you will have to set the SignaLink for high audio output (see the SL instructions). The K3 must be operated as indicated in the K3 manual. If you try to use the conventional advice given for other rigs, you will have trouble - the K3 is different in how it controls the power output level. Set the audio level to produce the proper level in the ALC meter (you can do that in TX TEST mode so you do not bother other operators). Then set your desired power level with the K3 power control. Attempting to use the audio level to control the power output will result in failure. 73, Don W3FPR On 10/13/2014 2:50 PM, paul ecker via Elecraft wrote: I am having problems getting MMTTY to transmitproperly using K3 with a Signalink USB interface. Currently, when I go to TX in MMTTY, I get red TXlight on Signalink, a red TX light on K3, I hear diddles coming out of theSignalink rear monitor jack, and I seemovement on Vu meter in Windows sound playback tab. BUT I get no RF out on K3 RFmeter, no movement on K3 ALC meter and I am not hearing any diddles. - PC is Win 7 64 bit, i5 3.5ghz processor, 16gbof ram - My K3, Signalink, PC setup is working finewith DM780 PSK31, JT65HF, WSPR and WSJT-X. Would appreciate talking to someone who hasMMTTY running successfully using K3 witha Signalink USB to share setup information. __ 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] BNCs Enough!
For what it might be worth, I only use 7/16 DIN connectors for my jumpers and transmission lines. When I have coax switches and baluns made, as well as accessories such as power meters, I always order them with 7/16 DINs. I also always buy either Andrew or Times Microwave connectors depending whether I am using hard line or coax such as LMR600 or LMR900. It costs a bunch more, but the 7/16 DIN connectors can't be beat. Alan/KD7GC Alan R. Downing Phoenix, AZ From: Fred Townsend-2 [via Elecraft] [mailto:ml-node+s365791n7593827...@n2.nabble.com] Sent: Monday, October 13, 2014 2:52 PM To: kd7gc Subject: Re: BNCs Enough! Without sounding my horn too loudly I have servered on IEEE connector committees and been paid big bucks to solve the production line problems. Counterfet connectors is too mild a term. There is some real crap out there and your eyeballs won't be able to detect it. Things like finish and and spring tention problems can not be seen. I recall one particular connector that was causing a 2db measured loss over a prefered Kings or Amphenol connector. The imported brand X connector was available in both 50 and 75 ohm versions, both of which were unmarked. When actually measured with a TDR they both measured 62 ohms. Folks, life is too short to mess with S T U F F like this. Do you really have to touch the wet paint or believe the sign. 73, Fred, AE6QL -Original Message- From: Fred Jensen [hidden email] Sent: Oct 13, 2014 12:49 PM To: [hidden email] Subject: Re: [Elecraft] BNCs On 10/13/2014 10:42 AM, Sandy Blaize wrote: There is a lot of crap parts available at hamfests these days! Be careful what you buy!! Had cable problems with P3 when I first got it. Bob, K6XX, at Elecraft and who I know well called me and said [only slightly tongue-in-cheek] they'd send me a replacement cable ... *if* I promised to cut the old one in small pieces and bury it at the bottom of our trash can so it never could appear at a ham swap. :-) I did. If you want connectors that fit, and that work all the time, you'll need to totally avoid the cheap stuff. I use only Amphenol coax connectors. 73, Fred K6DGW - Northern California Contest Club - CU in the 2015 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:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] _ If you reply to this email, your message will be added to the discussion below: http://elecraft.365791.n2.nabble.com/Re-BNCs-Enough-tp7593827.html To unsubscribe from Elecraft, click here http://elecraft.365791.n2.nabble.com/template/NamlServlet.jtp?macro=unsubsc ribe_by_codenode=365791code=a2Q3Z2NAcS5jb218MzY1NzkxfDE3MzQ0NDk4ODY= . http://elecraft.365791.n2.nabble.com/template/NamlServlet.jtp?macro=macro_v iewerid=instant_html%21nabble%3Aemail.namlbase=nabble.naml.namespaces.Basi cNamespace-nabble.view.web.template.NabbleNamespace-nabble.view.web.template .NodeNamespacebreadcrumbs=notify_subscribers%21nabble%3Aemail.naml-instant_ emails%21nabble%3Aemail.naml-send_instant_email%21nabble%3Aemail.naml NAML -- View this message in context: http://elecraft.365791.n2.nabble.com/Re-BNCs-Enough-tp7593827p7593832.html Sent from the Elecraft mailing list archive at Nabble.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 and VB6
My experience with a dual-boot computer (Fedora 9 and Windoze XP) with a relay toggled by the RTS line: Windoze fiddles with the RTS line while booting, Fedora 9 doesn't. de AJ4TF -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-and-VB6-tp7593796p7593833.html Sent from the Elecraft mailing list archive at Nabble.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] New beta and production firmware releases for KX3 and PX3
KX3 (rev. 2.25) and PX3 (rev. 1.12) firmware releases are now available for beta test (see notes below). The previous KX3 beta release has also been moved to Production status (2.23). The files are located at: http://www.elecraft.com/KX3/KX3_software.htm http://www.elecraft.com/PX3/PX3_software.htm The most important feature is decoded text on the PX3 display. This works in both transmit and receive modes for CW, PSK31 (PSK-D) and RTTY (FSK-D). NOTE 1: If you don't see the new releases on our web site, it's probably because your browser has cached an older page. Just hit your browser's refresh button (usually a circular arrow icon). NOTE 2: Please turn off your KXPA100 (if applicable) when doing KX3 and PX3 firmware loads. This requirement will be eliminated in future versions of KX3 and PX3 Utility. 73, Wayne N6KR * * * KX3 MCU 2.25 / DSP 1.30, 10-5-2014 Note: The first two items below were actually made available in the 2.24 field-test firmware release. * SUPPORT FOR PX3 TEXT DISPLAY: To enable text decode on the PX3, hold LABELS switch to switch to text-decode mode (requires PX3 rev. 1.12 or later). Text decode must also be enabled at the KX3. * DUAL RX NOW ALLOWED WITH RX SHFT=8.0. In this case, VFO A can be from -7 below VFO B to +23 above it (vs. +/- 15 for RX SHFT=NOR). * PX3 NOW DISPLAYS VFO B PASSBAND CORRECTLY: The PX3 was showing the wrong VFO B filter bandwidth or passband location when using DATA modes or DUAL RX (dual watch). * DUAL RX DOES NOT FORCE OFS/B KNOB TO BE USED AS VFO B: The operator’s OFS/B knob assignment is no longer lost when DUAL RX is in effect. * FAST-PLAY DISPLAY ERROR FIXED: With fast-play enabled (1-touch message play using BAND+/- and FREQ ENT.), a band change originating from a PC application no longer flashes “END” on VFO B. * CW SPEED DISPLAY TIME INCREASED WHEN TEXT DECODE IS ON: In CW mode, speed is now displayed for 1.0 sec. In FSK-D and PSK-D modes, it's .5 sec. The time is shorter for DATA modes because character transmission rates are usually faster, and the operator might miss important text due to the speed display. * PA BYPASS METERING FIXED: If the KXPA100 goes to bypass because of an error condition, the KX3 drops to 5 W. The RF meter is now correctly set to low range. * TEXT DECODE LOCKOUT FIX: Adjustment of NR, NB, NTCH, etc. no longer causes loss of CW/DATA text decode on the VFO B display. * HOST COMMANDS “UP”, “DN”, and “DT”: These are now working with the PX3. * * * PX3 MCU 1.12 / 10/03/2014 * Fixes a bug which required extra encoder turns to change the span. * Text decode feature added. A long key press of the MENU/LABELS key now is used to: show labels, not show labels or turn on text decode. * Text decode shows the receive characters in white, transmit characters in green. * Noise Blanker on/off now shows the on/off state in the menu, just like other menu functions. * Rev. 1.12 of the PX3 requires KX3 version 2.24 or later __ 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] OT tower disassemble tool
I have to take down a 60ft Rohn-25 tower that's been up for 20 plus years. I remember seeing a tool advertised in QST and CQ for just this purpose. It resembled a long lever that was dimensioned for Rohn-25 specifically and helped to pry the sections apart. Any leads to this tool would be greatly appreciated. Thanks in advance. ...robert -- Robert G Strickland, PhD ABPH - KE2WY rc...@verizon.net.usa Syracuse, New York, USA __ 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] OT tower disassemble tool
I remember seeing that tool in magazine ads. I have a modified light weight scissor jack to loosen tower sections. It loosens all three legs at the same time. It works very well. If you don't find the rohn tool you might consider the jack. 73 Joe K2UF -Original Message- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Robert G Strickland Sent: Monday, October 13, 2014 10:26 PM To: Elecraft Subject: [Elecraft] OT tower disassemble tool I have to take down a 60ft Rohn-25 tower that's been up for 20 plus years. I remember seeing a tool advertised in QST and CQ for just this purpose. It resembled a long lever that was dimensioned for Rohn-25 specifically and helped to pry the sections apart. Any leads to this tool would be greatly appreciated. Thanks in advance. ...robert -- Robert G Strickland, PhD ABPH - KE2WY rc...@verizon.net.usa Syracuse, New York, USA __ 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 j...@k2uf.com - No virus found in this message. Checked by AVG - www.avg.com Version: 2014.0.4765 / Virus Database: 4040/8383 - Release Date: 10/13/14 __ 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] OT tower disassemble tool
It's called a Tower Jack... Dr. William J. Schmidt - K9HZ-J68HZ-8P6HK-ZF2HZ-PJ4/K9HZ-VP5/K9HZ Owner - Operator Big Signal Ranch Staunton, Illinois email: b...@wjschmidt.com -Original Message- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Joe K2UF Sent: Monday, October 13, 2014 9:34 PM To: 'Robert G Strickland'; 'Elecraft' Subject: Re: [Elecraft] OT tower disassemble tool I remember seeing that tool in magazine ads. I have a modified light weight scissor jack to loosen tower sections. It loosens all three legs at the same time. It works very well. If you don't find the rohn tool you might consider the jack. 73 Joe K2UF -Original Message- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Robert G Strickland Sent: Monday, October 13, 2014 10:26 PM To: Elecraft Subject: [Elecraft] OT tower disassemble tool I have to take down a 60ft Rohn-25 tower that's been up for 20 plus years. I remember seeing a tool advertised in QST and CQ for just this purpose. It resembled a long lever that was dimensioned for Rohn-25 specifically and helped to pry the sections apart. Any leads to this tool would be greatly appreciated. Thanks in advance. ...robert -- Robert G Strickland, PhD ABPH - KE2WY rc...@verizon.net.usa Syracuse, New York, USA __ 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 j...@k2uf.com - No virus found in this message. Checked by AVG - www.avg.com Version: 2014.0.4765 / Virus Database: 4040/8383 - Release Date: 10/13/14 __ 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] OT tower disassemble tool
I use a small bottle jack and a pair of 2x4 all tied together and then tied to a tower leg. This protects those below if something slips. Terry, KQ5U On 10/13/2014 9:26 PM, Robert G Strickland wrote: I have to take down a 60ft Rohn-25 tower that's been up for 20 plus years. I remember seeing a tool advertised in QST and CQ for just this purpose. It resembled a long lever that was dimensioned for Rohn-25 specifically and helped to pry the sections apart. Any leads to this tool would be greatly appreciated. Thanks in advance. ...robert __ 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] OT tower disassemble tool
The original Tower Jack is no longer made. A newer/better design is manufactured by KF7P Metalworks: http://www.kf7p.com/KF7P/YellowJack.html Called the Yellow Jack. That said, be EXTREMELY careful disassembling an old tower, particularly one that you may not know much of its history or if it was installed properly. Be sure you check the integrity of the tower itself AND the guy anchors/guys. The safest way to take it down may be with a crane. If you can..a sawzall/torch may be a better solution. Be safe and understand what you're doing. I would check the Towertalk archives on this subject. On 10/13/2014 9:35 PM, Dr. William J. Schmidt, II wrote: It's called a Tower Jack... Dr. William J. Schmidt - K9HZ-J68HZ-8P6HK-ZF2HZ-PJ4/K9HZ-VP5/K9HZ Owner - Operator Big Signal Ranch Staunton, Illinois email: b...@wjschmidt.com -Original Message- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Joe K2UF Sent: Monday, October 13, 2014 9:34 PM To: 'Robert G Strickland'; 'Elecraft' Subject: Re: [Elecraft] OT tower disassemble tool I remember seeing that tool in magazine ads. I have a modified light weight scissor jack to loosen tower sections. It loosens all three legs at the same time. It works very well. If you don't find the rohn tool you might consider the jack. 73 Joe K2UF -Original Message- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Robert G Strickland Sent: Monday, October 13, 2014 10:26 PM To: Elecraft Subject: [Elecraft] OT tower disassemble tool I have to take down a 60ft Rohn-25 tower that's been up for 20 plus years. I remember seeing a tool advertised in QST and CQ for just this purpose. It resembled a long lever that was dimensioned for Rohn-25 specifically and helped to pry the sections apart. Any leads to this tool would be greatly appreciated. Thanks in advance. ...robert -- 73, Gary K9GS Greater Milwaukee DX Association: http://www.gmdxa.org Society of Midwest Contesters: http://www.w9smc.com CW Ops #1032 http://www.cwops.org --- 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] OT tower disassemble tool
Much cheaper version/ copy on eBay... search! Dr. William J. Schmidt - K9HZ-J68HZ-8P6HK-ZF2HZ-PJ4/K9HZ-VP5/K9HZ Owner - Operator Big Signal Ranch Staunton, Illinois email: b...@wjschmidt.com -Original Message- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Gary K9GS Sent: Monday, October 13, 2014 9:51 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] OT tower disassemble tool The original Tower Jack is no longer made. A newer/better design is manufactured by KF7P Metalworks: http://www.kf7p.com/KF7P/YellowJack.html Called the Yellow Jack. That said, be EXTREMELY careful disassembling an old tower, particularly one that you may not know much of its history or if it was installed properly. Be sure you check the integrity of the tower itself AND the guy anchors/guys. The safest way to take it down may be with a crane. If you can..a sawzall/torch may be a better solution. __ 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] FS: K2 KPA100/KAT100 And 4 band K1
I'm downsizing since retirement earlier this year, will be on the road with the travel trailer. These item need a new home instead of sitting packed away. I have my KX3, PX3 along with the KXPA 100, it all fits nicely in the trailer. The K2, s/n 6576, was built in late 2011 by Dale Putnam WC7S, with the complete Rework Eliminator kit. Installed in it are SSB option, Antenna tuner, KDSP2 filter with clock, KIO2 RS-232 interface, KBT2 battery kit, no battery. There's a built and unbuilt 60 meter kit, the built one is not installed. There's also an unbuilt noise blanker. There's a weighted VFO knob installed, and an extra top cabinet panel with speaker installed. All the manuals included, along with a MH-2 hand mic and headset adapter. There's two unopened Rework Eliminator kits, KXPD1 clamp for the KX1 paddles to mount to the K2 bail, a cable for connecting the NUE-PSK modem (modem not included). In a separate enclosure is the KPA/KAT 100 amp/tuner with cables to hook to the K2. Both radio and amp are in great condition. Asking $1500.00 for the package, new this would cost almost $2400.00. The K1, s/n 2945, covers 40/30/20/15 meters, has the antenna tuner installed along with the Back Light mod and a weighted knob like the K2 installed. Asking $450.00 for the K1. I will double box and insure, and pay the shipping, only lower 48 thou, no overseas. Paypal, or money order works for me. You will get two boxes with the K2. As with all used electronic equipment, there's no return or refund. You will get working radios when they leave me. Contact me off-line at ekac...@yahoo.com, or call my cell and leave a msg. 520-490-5395. ( I don't always hear the cell with my hearing aids) Thanks and 73, Ed Kacura N7EDK Willits, CA 95490 __ 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
