Re: K3 wish list
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On Nov 13, 2007 8:43 PM, Craig Rairdin <[hidden email]> wrote:
> > Pardon my ignorance but I don't understand how your station layout would be > improved with an external ATU. The KAT3 occupies the same space inside the > K3 as the KANT3. An external tuner would result in more, not less, space > being taken outside the radio (albeit remotely mounted), plus you'd have > another cable to route. > > There may be something about having a 6m beam that works better with a > remote ATU and that's fine -- I just don't understand how this is all driven > by limited desk space. The same amount of desk space is taken up with the > ATU inside the K3 as outside. I think you're missing the point. Many people with limited situations have to make do with antennas that are not resonant on some bands. In that situation it is much better to have the tuner close to the antenna feed point. Many people in limited situations may also have restrictions such as only able to get one or two thin cables into the shack. The remote switching suggested by Alan would allow two antennas to share the same feeder coming in to the shack. If a product was available that offered these features with the same operating convenience you get with an internal ATU then I'd join those who have already said they'd buy it. -- Julian, G4ILO K2 s/n: 392 K3 s/n: ??? G4ILO's Shack: www.g4ilo.com Zerobeat Ham Forums: www.zerobeat.net/smf _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Julian, G4ILO. K2 #392 K3 #222 KX3 #110
* G4ILO's Shack - http://www.g4ilo.com * KComm - http://www.g4ilo.com/kcomm.html * KTune - http://www.g4ilo.com/ktune.html |
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In a message dated 13/11/2007 22:03:59 GMT Standard Time, [hidden email] writes: Craig Rairdin NZ0R Wrote Pardon my ignorance but I don't understand how your station layout would be improved with an external ATU. The KAT3 occupies the same space inside the K3 as the KANT3. An external tuner would result in more, not less, space being taken outside the radio (albeit remotely mounted), plus you'd have another cable to route. There may be something about having a 6m beam that works better with a remote ATU and that's fine -- I just don't understand how this is all driven by limited desk space. The same amount of desk space is taken up with the ATU inside the K3 as outside. Craig NZ0R Instead of small I should have said modest, i.e. 100w max from a K3 (I hope) running barefoot feeding a 100ft doublet at 27 feet squashed into a garden 90ftx 30ft including the house. The proximity of neighbours prevents more than 100 watts. With this system I have already worked most continents on SSB. The rig has an output impedance of 50ohm into 30ft of 50ohm cable so the place to fit the ATU and balun is between the 50ohm cable and the open wire feeder of the doublet. The shack is in an upstairs front bedroom and the feedpoint is at the back of the house. And this is nonnegotiable. Hence the need to have the ATU remote from the rig and the antenna switching in the rig so that a second 50ohm cable can feed a 50ohm yagi direct not needing an ATU. OK yes this does introduce the need to weather proof the ATU but there are several on the market already some suitable even for small boats in far more extreme conditions. My wish was for an ATU designed to work specifically with the K3 taking advantage in the auto tune facilities with a one touch action. Alan G8FMH Still waiting my K3 _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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In reply to this post by Julian, G4ILO
On Wednesday, November 14, 2007 8:53 AM, Julian G4ILO wrote:
> If a product was available that offered these features with the same > operating convenience you get with an internal ATU then I'd join those > who have already said they'd buy it. Something that should not be overlooked is acoustic noise generated by an antenna matching unit (ATU) if it is to be used outside, relays clattering away at 2am could upset the neighbours! Far better is the 'purr' of a motor driven capacitor used in an 'old fashioned' link coupled matching unit, nevertheless I have mine in a soundproofed box. My wish is that the designers of commercial tuners would allow tuning to be achieved with milliwatts of RF rather than watts, which is feasible. IMHO tuning with RF levels above a few milliwatts erp is anti-social in terms of QRM. 73, Geoff GM4ESD _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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Geoffrey Mackenzie-Kennedy wrote:
> Something that should not be overlooked is acoustic noise generated by > an antenna matching unit (ATU) if it is to be used outside, relays > clattering away at 2am could upset the neighbours! ... but to be fair, that's only when you press "TUNE" for the first time on a new antenna, right? After that, most modern ATUs will remember the settings for different bands, or different parts of bands, and when you QSY significantly it's usually just one "click" to get back to the remembered settings? -- "Nosey" Nick Waterman, VE3/G7RZQ, K2 #5209. use Std::Disclaimer; [hidden email] Half Moon tonight. (At least its better than no Moon at all.) _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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In reply to this post by Geoffrey Mackenzie-Kennedy
On Nov 14, 2007 12:51 PM, Geoffrey Mackenzie-Kennedy
<[hidden email]> wrote: > Something that should not be overlooked is acoustic noise generated by an > antenna matching unit (ATU) if it is to be used outside, relays clattering > away at 2am could upset the neighbours! Your neighbours must have thin walls, or very sensitive ears, and you must live in a very quiet location. :) -- Julian, G4ILO K2 s/n: 392 K3 s/n: ??? G4ILO's Shack: www.g4ilo.com Zerobeat Ham Forums: www.zerobeat.net/smf _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Julian, G4ILO. K2 #392 K3 #222 KX3 #110
* G4ILO's Shack - http://www.g4ilo.com * KComm - http://www.g4ilo.com/kcomm.html * KTune - http://www.g4ilo.com/ktune.html |
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In reply to this post by Nick Waterman
I agree, but as an example if I am on 40m at some ridiculous hour I would be
working CW at the low end and SSB between 7140 and 7197 kHz, which I believe could result in a fair number of "clicks" during the night when using an all driven array with the type of ATU you have in mind. I guess that what I am saying is 'don't forget the sleeping neighbours' :-) 73, Geoff GM4ESD Nick Waterman <[hidden email]> wrote: > Geoffrey Mackenzie-Kennedy wrote: >> Something that should not be overlooked is acoustic noise generated by >> an antenna matching unit (ATU) if it is to be used outside, relays >> clattering away at 2am could upset the neighbours! > > ... but to be fair, that's only when you press "TUNE" for the first time > on a new antenna, right? After that, most modern ATUs will remember the > settings for different bands, or different parts of bands, and when you > QSY significantly it's usually just one "click" to get back to the > remembered settings? _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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In reply to this post by Julian, G4ILO
Thick walls built in 1814, neighbours (3) about 50 metres away, sensitive
ears - don't know, location very quiet RF and acoustic, BUT very noisy pheasant who get up at some unholy hour who don't bother the neighbours it seems. Relays would introduce an alien sound :-) 73, Geoff GM4ESD Julian G4ILO <[hidden email]> wrote: > Your neighbours must have thin walls, or very sensitive ears, and you > must live in a very quiet location. :) _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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In reply to this post by Julian, G4ILO
My only problem with motorised units is the screwdriver type antennas. They make a heck of a racket and this is the only reason I don't have that type on my property. I had one on my car for a short while and it's quite disconcerting hearing it winding up and down.
David G3UNA > > From: "Geoffrey Mackenzie-Kennedy" <[hidden email]> > Date: 2007/11/14 Wed PM 12:51:09 GMT > To: "Elecraft Discussion List" <[hidden email]> > Subject: Re: [Elecraft] K3 wish list > > On Wednesday, November 14, 2007 8:53 AM, Julian G4ILO wrote: > > > If a product was available that offered these features with the same > > operating convenience you get with an internal ATU then I'd join those > > who have already said they'd buy it. > > Something that should not be overlooked is acoustic noise generated by an > antenna matching unit (ATU) if it is to be used outside, relays clattering > away at 2am could upset the neighbours! Far better is the 'purr' of a motor > driven capacitor used in an 'old fashioned' link coupled matching unit, > nevertheless I have mine in a soundproofed box. > > My wish is that the designers of commercial tuners would allow tuning to be > achieved with milliwatts of RF rather than watts, which is feasible. IMHO > tuning with RF levels above a few milliwatts erp is anti-social in terms of > QRM. > > 73, > Geoff > GM4ESD > > _______________________________________________ > Elecraft mailing list > Post to: [hidden email] > You must be a subscriber to post to the list. > Subscriber Info (Addr. Change, sub, unsub etc.): > http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/subscribers.htm > Elecraft web page: http://www.elecraft.com > ----------------------------------------- Email sent from www.virginmedia.com/email Virus-checked using McAfee(R) Software and scanned for spam _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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In reply to this post by Julian, G4ILO
And then there's the frogs! The ant tuner will shut them all up for a few
minutes! Of course, there is always the possibility of using a feedline that is matched to the antenna and good grounds etc. I've been runnning a vertical made by Mosely back in the late 1950's, with 80 feet of RG-8. Unfortunately it is only a 4 band 40 - 10 no WARC, BUT it'll tune all 4 bands to under 1.5:1 and no need for tuners. The dipole is another story. Al WA6VNN ************************************** See what's new at http://www.aol.com _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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