Balanced AT
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Roelof Bakker, pa0rdt , wrote:
Though this works for me at the moment, it should be nice if someone (Elecraft?) could come up with a stand alone truely balanced automatic antenna tuner. Good Idea...I Think there is a good, but limited, market for such a tuner. Later KXBill _______________________________________________ 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 a message dated 9/6/07 7:42:29 PM Eastern Daylight Time, [hidden email]
writes: > it should be nice if someone > (Elecraft?) could come up with a stand alone truely balanced automatic > antenna tuner. > > Good Idea...I Think there is a good, but limited, market for such a tuner. > > > I think the market would be a lot more than "limited". Particularly if the tuner part could be remoted. If Elecraft made it, the market would be enormous, IMHO. Imagine being able to mount a weatherproof box outside, run the balanced-line to it, then run coax into the shack - and the coax runs at very low SWR, so it can be pretty long without having much loss. Seems to me that the basic principles used in the KAT2 and other relay-based ATUs could be adapted to a balanced tuner. 73 de Jim, N2EY ************************************** Get a sneak peek of the all-new AOL at http://discover.aol.com/memed/aolcom30tour _______________________________________________ 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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[hidden email] wrote:
>In a message dated 9/6/07 7:42:29 PM Eastern Daylight Time, [hidden email] >writes: >I think the market would be a lot more than "limited". Particularly if the >tuner part could be remoted. If Elecraft made it, the market would be enormous, >IMHO. > >Imagine being able to mount a weatherproof box outside, run the balanced-line >to it, then run coax into the shack - and the coax runs at very low SWR, so >it can be pretty long without having much loss. > >Seems to me that the basic principles used in the KAT2 and other relay-based >ATUs could be adapted to a balanced tuner. > >73 de Jim, N2EY > > http://www.hamware.de/hardware/tuner502/descr-at502-e.pdf - seems semi-automatic though John _______________________________________________ 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 N2EY
Doesn't an SGC fit this bill? I use an SG237 to tune a portable inverted V fed by 300ohm (or thereabouts) ribbon - arms cut at 20m, on a 10m telescopic pole and it tunes up on 80m - 10m a treat. Am I missing something in your post? On 7/9/07 01:23, "[hidden email]" <[hidden email]> sent: > In a message dated 9/6/07 7:42:29 PM Eastern Daylight Time, [hidden email] > writes: > > >> it should be nice if someone >> (Elecraft?) could come up with a stand alone truely balanced automatic >> antenna tuner. >> >> Good Idea...I Think there is a good, but limited, market for such a tuner. > I think the market would be a lot more than "limited". Particularly if the > tuner part could be remoted. If Elecraft made it, the market would be > enormous, > IMHO. > > Imagine being able to mount a weatherproof box outside, run the balanced-line > to it, then run coax into the shack - and the coax runs at very low SWR, so > it can be pretty long without having much loss. > > Seems to me that the basic principles used in the KAT2 and other relay-based > ATUs could be adapted to a balanced tuner. > > 73 de Jim, N2EY -- I know that you believe that you understood what you think I said, but I am not sure you realize that what you heard is not what I meant. -- Robert McCloskey, State Department spokesman (attributed) _______________________________________________ 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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David Ferrington, M0XDF wrote:
> Doesn't an SGC fit this bill? I use an SG237 to tune a portable inverted V > fed by 300ohm (or thereabouts) ribbon - arms cut at 20m, on a 10m telescopic > pole and it tunes up on 80m - 10m a treat. > > Am I missing something in your post? > Yes, you are missing the word 'balanced' :-) Ian -- Ian J Maude G0VGS SysOp GB7MBC DX Cluster Member of RSGB, ARRL, GQRP K2 #4044 | 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 KXBill
David Ferrington, M0XDF wrote:
> Isn't an inverted V balanced? - Sorry, I'm still new to this - SGC certainly > does tune balanced antennas afaik - there are lots of examples of that > quoted in the forums. > The antenna *could* be balanced, dependent on what you feed it with. The SCG tuner will tune balanced aerial systems but is not AFAIK a balanced tuner. Ian > In the manual (http://www.sgcworld.com/Publications/Manuals/237man.pdf), > page 22 shows both a dipole and an inverted V. > > > On 7/9/07 08:29, "Ian J Maude" <[hidden email]> sent: > > >> David Ferrington, M0XDF wrote: >> >>> Doesn't an SGC fit this bill? I use an SG237 to tune a portable inverted V >>> fed by 300ohm (or thereabouts) ribbon - arms cut at 20m, on a 10m telescopic >>> pole and it tunes up on 80m - 10m a treat. >>> >>> Am I missing something in your post? >>> >>> >> Yes, you are missing the word 'balanced' :-) >> >> Ian >> > > -- Ian J Maude G0VGS SysOp GB7MBC DX Cluster Member of RSGB, ARRL, GQRP K2 #4044 | 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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Well, now, when is a door not a door?
Of course, when it is a jar. de Joe, aa4nn ----------------------------------------- > The SCG tuner will tune balanced aerial systems but is not AFAIK a > balanced tuner. _______________________________________________ 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 Ian Maude
Oh, I think I understand the distinction your making now.
On 7/9/07 09:12, "Ian J Maude" <[hidden email]> sent: > David Ferrington, M0XDF wrote: >> Isn't an inverted V balanced? - Sorry, I'm still new to this - SGC certainly >> does tune balanced antennas afaik - there are lots of examples of that >> quoted in the forums. >> > The antenna *could* be balanced, dependent on what you feed it with. > The SCG tuner will tune balanced aerial systems but is not AFAIK a > balanced tuner. > > Ian >> In the manual (http://www.sgcworld.com/Publications/Manuals/237man.pdf), >> page 22 shows both a dipole and an inverted V. >> >> >> On 7/9/07 08:29, "Ian J Maude" <[hidden email]> sent: >> >> >>> David Ferrington, M0XDF wrote: >>> >>>> Doesn't an SGC fit this bill? I use an SG237 to tune a portable inverted V >>>> fed by 300ohm (or thereabouts) ribbon - arms cut at 20m, on a 10m >>>> telescopic >>>> pole and it tunes up on 80m - 10m a treat. >>>> >>>> Am I missing something in your post? >>>> >>>> >>> Yes, you are missing the word 'balanced' :-) >>> >>> Ian >>> >> >> > -- When I am working on a problem I never think about beauty. I only think about how to solve the problem. But when I have finished, if the solution is not beautiful, I know it is wrong. -R. Buckminster Fuller, engineer, designer, and architect (1895-1983) _______________________________________________ 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 N2EY
Jim [hidden email]> wrote on Friday, September 07, 2007 at 1:23 AM
> Imagine being able to mount a weatherproof box outside, run the > balanced-line > to it, then run coax into the shack - and the coax runs at very low SWR, > so > it can be pretty long without having much loss. > > Seems to me that the basic principles used in the KAT2 and other > relay-based > ATUs could be adapted to a balanced tuner. ------------------------------------------------------------------------------------ Just remember that some relays are very noisy when operating e.g. those in the KAT100, so the weatherproof box must also act as a soundproof enclosure to avoid waking up any neighbours if you are on the low bands, for example, at some unholy hour. 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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In reply to this post by John Huggins
-----Original Message-----
From: John Huggins <[hidden email]> >Here is one that seems to seek that market and might fit the bill... >http://www.hamware.de/hardware/tuner502/descr-at502-e.pdf - seems semi-automatic though WOW! That's the ticket! A true balanced coupler, remote controlled. Will also match unbalanced loads and do remote antenna switching. Looks to me like it has both auto and manual modes, and RF sensing. If I understand the system, you can: 1) Adjust it manually 2) Have it auto-adjust 3) Have it preset by telling it which memory to look at. So if you want to listen on, say, 21.225, you tell it the nearest memory location and it presets without transmitting any RF. Will work with any rig, but that also means it doesn't direct-interface either. Now the question - how much? --- Dream-wish list: Remote tuner/switch somewhat like this, but with an optional direct-to-rig interface specific to various rigs. Made by Elecraft, of course. QRP, 200W and QRO versions, all using the same control box. Hey, we can dream, right? 73 de Jim, N2EY ________________________________________________________________________ Email and AIM finally together. You've gotta check out free AOL Mail! - http://mail.aol.com =0 _______________________________________________ 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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[hidden email] wrote:
> -----Original Message----- > From: John Huggins <[hidden email]> > >> Here is one that seems to seek that market and might fit the bill... > >http://www.hamware.de/hardware/tuner502/descr-at502-e.pdf - seems > semi-automatic though > > > WOW! That's the ticket! <snip> > Now the question - how much? $699 US. You can get the price in Euros on the site as well. More than I'm prepared to spend, unfortunately. -- 73, Vic, K2VCO Fresno CA http://www.qsl.net/k2vco _______________________________________________ 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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