Re: [Elecraft] Stackable Binding Post (BNC-BP)
Joshua, This is the beginning of a very long discussion, and one I'm still studying after decades as a ham. Ignoring the counterpoise for just a moment.. If your wire is 1/4 wave on some band, it will have a fairly low impedance at the binding post connector and the KX3 tuner will tune it just fine. If your wire is some other length on the same band, there will be a higher impedance at the feedpoint, and the KX3 will tune it just fine. If your wire is 1/2 wave on that band, the impedance will be very high, and the tuner likely won't tune it. The reason you want to be aware of this is that a 1/4 wave on 20m will be 1/2 wave on 10m. I used to think that resonance was king, and the tuner made the antenna resonant. I'm starting to actually believe that isn't true. Something that is truly random will work on some bands, not on others. There are charts that tell you how much wire to use so it is not 1/2 wave on any useful ham band. Alternately, you can just have a couple of different lengths of wire so if you stumble on a half-wave length, you can switch to something ten or fifteen feet longer or shorter. 73 -- Lynn On 5/22/2014 4:52 PM, Joshua Gould wrote: One of the things I'm looking at is the Stackable binding posts. The way I read this is that I can just use a random length wire (provided that it is a 1/4 wavelength on some band), hook it to the radio and just get on the air... __ 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] Stackable Binding Post (BNC-BP)
Greetings, I have yet another question... I've decided that I'm going to get the KX3, KXAT3, and the MH3 and am trying to now nail down the other options that I will purchase, vs what I will add at a later date. One of the things I'm looking at is the Stackable binding posts. The way I read this is that I can just use a random length wire (provided that it is a 1/4 wavelength on some band), hook it to the radio and just get on the air... Is that an apt description of what this adaptor is for? I would like to thank the group for answering my questions, and helping me in my decision making. Thanks and 73, Joshua Gould K8WXA __ 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] Stackable Binding Post (BNC-BP)
Hi Joshua, That is exactly how I use it. Works well with a quarter-wave wire and a counterpoise. 73, matt W6NIA On Thu, 22 May 2014 19:52:32 -0400, you wrote: Greetings, I have yet another question... I've decided that I'm going to get the KX3, KXAT3, and the MH3 and am trying to now nail down the other options that I will purchase, vs what I will add at a later date. One of the things I'm looking at is the Stackable binding posts. The way I read this is that I can just use a random length wire (provided that it is a 1/4 wavelength on some band), hook it to the radio and just get on the air... Is that an apt description of what this adaptor is for? I would like to thank the group for answering my questions, and helping me in my decision making. Thanks and 73, Joshua Gould K8WXA __ 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 mzil...@roadrunner.com Matt Zilmer, W6NIA -- Give me six hours to chop down a tree and I will spend the first four sharpening the axe. -A. Lincoln __ 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] Stackable Binding Post (BNC-BP)
Joshua, You will want to use 2 - 1/4 wavelength wires - one for the radiator and the other for a counterpoise. It may work with just the radiator wire, but then the 'counterpoise' will be the case of the transceiver and your body and anywhere else the RF return path thinks it needs to be. With the counterpoise wire in place, that provides the RF return path and eliminates changes in tuning (SWR variation) depending on where you position the transceiver and your body. 73, Don W3FPR On 5/22/2014 7:52 PM, Joshua Gould wrote: Greetings, I have yet another question... I've decided that I'm going to get the KX3, KXAT3, and the MH3 and am trying to now nail down the other options that I will purchase, vs what I will add at a later date. One of the things I'm looking at is the Stackable binding posts. The way I read this is that I can just use a random length wire (provided that it is a 1/4 wavelength on some band), hook it to the radio and just get on the air... Is that an apt description of what this adaptor is for? I would like to thank the group for answering my questions, and helping me in my decision making. __ 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] Stackable Binding Post (BNC-BP)
A wire laying on the ground will have more capacitive loading and will electrically longer, so it can be shorter than a 1/4 wave. But all this depends on lots of assumptions, so just throw some wire out there and have fun. One common random length is a 26' foot wire in the air and a 16' wire on the ground. wunder K6WRU http://observer.wunderwood.org/ On May 22, 2014, at 6:27 PM, Don Wilhelm w3...@embarqmail.com wrote: Joshua, You will want to use 2 - 1/4 wavelength wires - one for the radiator and the other for a counterpoise. It may work with just the radiator wire, but then the 'counterpoise' will be the case of the transceiver and your body and anywhere else the RF return path thinks it needs to be. With the counterpoise wire in place, that provides the RF return path and eliminates changes in tuning (SWR variation) depending on where you position the transceiver and your body. 73, Don W3FPR On 5/22/2014 7:52 PM, Joshua Gould wrote: Greetings, I have yet another question... I've decided that I'm going to get the KX3, KXAT3, and the MH3 and am trying to now nail down the other options that I will purchase, vs what I will add at a later date. One of the things I'm looking at is the Stackable binding posts. The way I read this is that I can just use a random length wire (provided that it is a 1/4 wavelength on some band), hook it to the radio and just get on the air... Is that an apt description of what this adaptor is for? I would like to thank the group for answering my questions, and helping me in my decision making. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to wun...@wunderwood.org -- Walter Underwood wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
