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for those of you using the Buddipole antenna system, heres a video on
packing it up http://www.youtube.com/watch?v=_TmRJzUvOkk Stan KB4IA K3 sn 646 K2 sn 1089 KX1 sn _______________________________________________ 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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I am heading out on a bit of a DXpedition in a month and will be
dragging the K2 along with me. I will be in St. Kitts (V4) and Dominica (J7). Thinking about antennas, I was planning to take my SGC-231 tuner and some wire but am also looking at the Buddipole (which Elecraft sells so that makes it on-topic here :-) as an alternative. Would anyone care to comment on wire/tuner vs. Buddipole? -- 73 de Brian, WB6RQN Brian Lloyd - brian HYPHEN wb6rqn AT lloyd DOT 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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Wire antennas! The Buddipole is OK but a decent wire antenna will
outperform. Simon Brown, HB9DRV -------------------------------------------------- From: "Brian Lloyd" <[hidden email]> > > Thinking about antennas, I was planning to take my SGC-231 tuner and some > wire but am also looking at the Buddipole (which Elecraft sells so that > makes it on-topic here :-) as an alternative. > > Would anyone care to comment on wire/tuner vs. Buddipole? > _______________________________________________ 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 Brian Lloyd-6
Simon
have you actually tried the Buddipole? I haven't but have examined it at Martin Lynch and just think that it is a very convenient, quick way of getting on air from a portable location with a system which is going to considerably outperform mobile whips. 73 Rob, G3RCE ------------------------------------------ Wire antennas! The Buddipole is OK but a decent wire antenna will outperform. Simon Brown, HB9DRV -------------------------------------------------- From: "Brian Lloyd" <[hidden email]> > > Thinking about antennas, I was planning to take my SGC-231 tuner > and some > wire but am also looking at the Buddipole (which Elecraft sells so > that > makes it on-topic here :-) as an alternative. > > Would anyone care to comment on wire/tuner vs. Buddipole? > _______________________________________________ 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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Yes, I have one. Myself I would take some pre-made wire antennas, probably
dipoles which I can string up. Simon Brown, HB9DRV -------------------------------------------------- From: "Robert Allbright" <[hidden email]> > Simon > have you actually tried the Buddipole? > > I haven't but have examined it at Martin Lynch and just think that it is > a very convenient, quick way of getting > on air from a portable location with a system which is going to > considerably outperform mobile whips. > 73 Rob, G3RCE _______________________________________________ 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 Brian Lloyd-6
Wire: bend it any way you like except into a coil, unless you really have to. SGC tuner adds weight and cost to your portable operation which do not add to your signal. Buy fishing poles instead.
David G3UNA > > From: "Simon Brown (HB9DRV)" <[hidden email]> > Date: 2008/05/13 Tue AM 07:54:05 BST > To: "elecraft Reflector" <[hidden email]> > Subject: Re: [Elecraft] Buddipole vs. tuner and wire > > Wire antennas! The Buddipole is OK but a decent wire antenna will > outperform. > > Simon Brown, HB9DRV > > -------------------------------------------------- > From: "Brian Lloyd" <[hidden email]> > > > > Thinking about antennas, I was planning to take my SGC-231 tuner and some > > wire but am also looking at the Buddipole (which Elecraft sells so that > > makes it on-topic here :-) as an alternative. > > > > Would anyone care to comment on wire/tuner vs. Buddipole? > > > > > _______________________________________________ > 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 Robert Allbright
Considerably outperform? Isn't it basically a pair of center loaded mobile whips back to back?
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 Brian Lloyd-6
If you are more interested in DX, go for the Buddistick? I replaced the whip on mine with a 12foot MFJ telescopic whip and added an extra pole under the coil, this meant I could bypass the coil on all bands 20m and up. It worked well with a good counterpoise/radial system.
All the Buddipole stuff is very good quality, but not cheap, and as mentioned you can get a 10m telescopic fiberglass pole for a fraction of the price, and make something around this which would out perform a buddipole. David, Vk2NU _______________________________________________ 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 Brian Lloyd-6
Brian and All,
Wire and a tuner is always good, particularly if you can get it up high enough. And, it's cheaper!!!! But I think a Buddipole could be a good choice unless you know in advance how you would be able to raise a wire antenna adequately to get good results. I have a Buddipole system, and like it very much for many portable situations. But I will tell you that more often than not I use mine as a vertical (like the Buddistick). I almost always get better results using the system vertically, primarily because it's hard to get a Buddipole up high enough to really be effective. Of course, it would be nice if you could raise the system up somewhat even if you do use it vertically. The other advantage to wire and a tuner is that you can use it multiband more easily, assuming you also use balanced feedline. With a Buddipole (or Buddistick) you have to keep changing the coil settings to change bands. That might be a hassle. And if you do opt for the Buddistick idea, don't hesitate to use an extra rod or two under the coil, and a longer top section too. And use more radials than they suggest if you can. Any or all of these will give you better results usually. I just got my June QST yesterday, and Rick Littlefield (a well known QRPer) has an article on a multiband wire antenna that is off center fed. And it uses coax. But to do so, you have to pass on the WARC bands--those bands always present a matching problem for coax fed multiband antennas. The G5RV is a case in point. There's a little work involved in constructing Rick's antenna, but once you do it, it looks like it would be fairly easy to transport. I've never used an OCF antenna, but there are lots of good reasons to do so. Dave W7AQK ----- Original Message ----- From: "Brian Lloyd" <[hidden email]> To: "elecraft Reflector" <[hidden email]> Sent: Monday, May 12, 2008 9:57 PM Subject: [Elecraft] Buddipole vs. tuner and wire >I am heading out on a bit of a DXpedition in a month and will be dragging >the K2 along with me. I will be in St. Kitts (V4) and Dominica (J7). > > Thinking about antennas, I was planning to take my SGC-231 tuner and some > wire but am also looking at the Buddipole (which Elecraft sells so that > makes it on-topic here :-) as an alternative. > > Would anyone care to comment on wire/tuner vs. Buddipole? > > -- > > 73 de Brian, WB6RQN > Brian Lloyd - brian HYPHEN wb6rqn AT lloyd DOT 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 > _______________________________________________ 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 Brian Lloyd-6
Hi Brian
It really depends on what you can find for antenna supports. A wire dipole cut to frequency and up in the air higher than you are likely to raise a Buddipole will do more for you. The Buddipole makes a nice fallback antenna, but I'd try for an elevated wire antenna where possible. 73, Bob N6WG ----- Original Message ----- From: "Brian Lloyd" <[hidden email]> To: "elecraft Reflector" <[hidden email]> Sent: Monday, May 12, 2008 9:57 PM Subject: [Elecraft] Buddipole vs. tuner and wire > I am heading out on a bit of a DXpedition in a month and will be > dragging the K2 along with me. I will be in St. Kitts (V4) and > Dominica (J7). > > Thinking about antennas, I was planning to take my SGC-231 tuner and > some wire but am also looking at the Buddipole (which Elecraft sells > so that makes it on-topic here :-) as an alternative. > > Would anyone care to comment on wire/tuner vs. Buddipole? > > -- > > 73 de Brian, WB6RQN > Brian Lloyd - brian HYPHEN wb6rqn AT lloyd DOT 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 _______________________________________________ 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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Brian,
Also remember that one cannot defeat the laws of physics. A Buddypole is nothing but a piece of radiating 'wire' (OK, so it is a tube or whip, little difference) that is tuned by the inductor. A piece of wire the same length as the Buddypole attached to a tuner should perform about the same. (you will still need the radials connected to the tuner 'ground'). The longer the wire, and the higher the wire, the better the radiation will be. If you are looking for convenience, then the Buddypole or something similar is a good choice, but if you are striving for efficiency, a longer wire with a tuner or a dipole will be better. 73, Don W3FPR Robert Tellefsen wrote: > Hi Brian > It really depends on what you can find for > antenna supports. A wire dipole cut to frequency > and up in the air higher than you are likely to > raise a Buddipole will do more for you. The > Buddipole makes a nice fallback antenna, but > I'd try for an elevated wire antenna where possible. > 73, Bob N6WG > > ----- Original Message ----- > From: "Brian Lloyd" <[hidden email]> > To: "elecraft Reflector" <[hidden email]> > Sent: Monday, May 12, 2008 9:57 PM > Subject: [Elecraft] Buddipole vs. tuner and wire > > > >> I am heading out on a bit of a DXpedition in a month and will be >> dragging the K2 along with me. I will be in St. Kitts (V4) and >> Dominica (J7). >> >> Thinking about antennas, I was planning to take my SGC-231 tuner and >> some wire but am also looking at the Buddipole (which Elecraft sells >> so that makes it on-topic here :-) as an alternative. >> >> Would anyone care to comment on wire/tuner vs. Buddipole? >> >> -- >> >> 73 de Brian, WB6RQN >> Brian Lloyd - brian HYPHEN wb6rqn AT lloyd DOT 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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In reply to this post by n6wg
Brian,
Have you considered something like the YO-YO tenna? www.hamradiofun.com/yoyodeluxe.html They are very nice and compact dipole antenna and can be made to resonant length by only spooling out the correct amount of wire that you need for the particular band you want to work. Hoist it up in a coconut tree as high as you can get it and I think you'd be better off then with the buddipole at ground level. 73 Matt w5LL On Tue, 2008-05-13 at 07:53 -0700, Robert Tellefsen wrote: > Hi Brian > It really depends on what you can find for > antenna supports. A wire dipole cut to frequency > and up in the air higher than you are likely to > raise a Buddipole will do more for you. The > Buddipole makes a nice fallback antenna, but > I'd try for an elevated wire antenna where possible. > 73, Bob N6WG > > ----- Original Message ----- > From: "Brian Lloyd" <[hidden email]> > To: "elecraft Reflector" <[hidden email]> > Sent: Monday, May 12, 2008 9:57 PM > Subject: [Elecraft] Buddipole vs. tuner and wire > > > > I am heading out on a bit of a DXpedition in a month and will be > > dragging the K2 along with me. I will be in St. Kitts (V4) and > > Dominica (J7). > > > > Thinking about antennas, I was planning to take my SGC-231 tuner and > > some wire but am also looking at the Buddipole (which Elecraft sells > > so that makes it on-topic here :-) as an alternative. > > > > Would anyone care to comment on wire/tuner vs. Buddipole? > > > > -- > > > > 73 de Brian, WB6RQN > > Brian Lloyd - brian HYPHEN wb6rqn AT lloyd DOT 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 > > _______________________________________________ > 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 > _______________________________________________ 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 David Cutter
Wow! Thanks for all the input. FWIW, I already own the SGC-231 tuner
so it and wire cost me nothing. I would have to buy the Buddipole so it would have to be significantly easier/better to use to make it worth spending $400 on. Again, thanks for all the input. I appreciate it. Brian Lloyd Granite Bay Montessori School 9330 Sierra College Bl brian AT gbmontessori DOT com Roseville, CA 95661 +1.916.367.2131 (voice) +1.791.912.8170 (fax) PGP key ID: 12095C52A32A1B6C PGP key fingerprint: 3B1D BA11 4913 3254 B6E0 CC09 1209 5C52 A32A 1B6C _______________________________________________ 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 w7aqk
OK, I am convinced - keep the tuner and the wire. So, that brings up a
second question: balanced vs. unbalanced. Wire antennas that do not require a counterpoise are usually loops or dipoles, i.e. inherently balanced even if not resonant. Most tuners offer an unbalanced output. SGC says, just connect up the antenna. Seems to me that a balun would improve things and keep RF off the coax and power leads to the tuner. But how well do baluns handle huge mismatch? Just off the top of my head, it seems to me that the tuner at the top of a pole with two legs sloped down, i.e. inverted-V, would make a pretty good omni all-band antenna. More thinking aloud. Brian Lloyd Granite Bay Montessori School 9330 Sierra College Bl brian AT gbmontessori DOT com Roseville, CA 95661 +1.916.367.2131 (voice) +1.791.912.8170 (fax) PGP key ID: 12095C52A32A1B6C PGP key fingerprint: 3B1D BA11 4913 3254 B6E0 CC09 1209 5C52 A32A 1B6C _______________________________________________ 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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Last year I used an inverted V doublet, supported by a telescopic
carbon fibre pole (DK9SQ pole <http://www.qsl.net/dk9sq> and review at http://www.eham.net/reviews/detail/1094) and fed by a short length of ribbon (300 ohms I think, the clear plastic type) via an SG237. The doublet was not cut for any particular band and I did not use a balun or redials etc. I worked PY from Southern France (~5000 miles) on 20m with 100W SSB from an FT-857. I haven't tried it yet, but I plan on doing the same again with my K3, but via a BL2 this time. 73 de M0XDF, K3 #174 -- The universe is like a safe to which there is a combination. But the combination is locked up in the safe. -Peter De Vries, editor, novelist (1910-1993) On 13 May 2008, at 16:37, Brian Lloyd wrote: > OK, I am convinced - keep the tuner and the wire. So, that brings up > a second question: balanced vs. unbalanced. > > Wire antennas that do not require a counterpoise are usually loops > or dipoles, i.e. inherently balanced even if not resonant. Most > tuners offer an unbalanced output. SGC says, just connect up the > antenna. Seems to me that a balun would improve things and keep RF > off the coax and power leads to the tuner. But how well do baluns > handle huge mismatch? > > Just off the top of my head, it seems to me that the tuner at the > top of a pole with two legs sloped down, i.e. inverted-V, would make > a pretty good omni all-band antenna. > > More thinking aloud. > > Brian Lloyd > Granite Bay Montessori School 9330 Sierra College Bl > brian AT gbmontessori DOT com Roseville, CA 95661 > +1.916.367.2131 (voice) +1.791.912.8170 (fax) > > PGP key ID: 12095C52A32A1B6C > PGP key fingerprint: 3B1D BA11 4913 3254 B6E0 CC09 1209 5C52 A32A > 1B6C > > > > > _______________________________________________ > 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 _______________________________________________ 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 Brian Lloyd-6
Brian,
For portable operation at low power, you will typically not experience any ill effects from connecting the antenna directly to the tuner. But a switchable 1:1/4:1 current balun (like the Elecraft BL2) can be used to effectively increase the range of the tuner - try both positions and see which one tunes more easily. You might just want to have a balun in your portable kit just in case. 73, Don W3FPR Brian Lloyd wrote: > OK, I am convinced - keep the tuner and the wire. So, that brings up a > second question: balanced vs. unbalanced. > > Wire antennas that do not require a counterpoise are usually loops or > dipoles, i.e. inherently balanced even if not resonant. Most tuners > offer an unbalanced output. SGC says, just connect up the antenna. > Seems to me that a balun would improve things and keep RF off the coax > and power leads to the tuner. But how well do baluns handle huge > mismatch? > > Just off the top of my head, it seems to me that the tuner at the top > of a pole with two legs sloped down, i.e. inverted-V, would make a > pretty good omni all-band antenna. > > More thinking aloud. > > Brian Lloyd > 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 Brian Lloyd-6
I borrowed a friends buddipole setup for a trip to Valdosta, GA with
my K2/100. It had an 8' mast. My understanding is it perfoms significantly better with the 16' mast. It did ok for what I was doing. I had a 20m dipole strung low, and the buddipole did better than that. The biggest plus for the buddipole is that it can be setup in many different configurations and you know what you have. If on the other hand, you know you will be able to string something 20' up in a tree and run with that, it is a different matter. I did not play with the buddipole in the vertical configuration, but now wish I had. I can't find the article, but the author twisted a coil in a wire, I think about 20' high, tied a coupe of guys and 3 radials and worked stations all weekend while camping in the rv. Dave Wilburn K4DGW K2/100 - S/N 5982 K3/100 - S/N 766 "For those who fought for it, freedom has a flavor the protected will never know." Brian Lloyd wrote: > I am heading out on a bit of a DXpedition in a month and will be > dragging the K2 along with me. I will be in St. Kitts (V4) and Dominica > (J7). > > Thinking about antennas, I was planning to take my SGC-231 tuner and > some wire but am also looking at the Buddipole (which Elecraft sells so > that makes it on-topic here :-) as an alternative. > > Would anyone care to comment on wire/tuner vs. Buddipole? > > -- > > 73 de Brian, WB6RQN > Brian Lloyd - brian HYPHEN wb6rqn AT lloyd DOT 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 > 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 Brian Lloyd-6
Hi Brian
I don't recall if you mentioned what power level you would be using with your K2. If it is running barefoot, without the 100w PA, you could use one of the Elecraft switchable baluns. They switch between 1:1 and 4:1 ratios, giving you a good chance to match most balanced feeds. Even though the rig end of the line may be reactive, due to impedance mismatches along the line, the switchable balun can be used to reduce the amount of mismatch the ATU then has to to cope with. This makes a simple dipole with tuned feeders a nice multiband antenna. On a given band, try both switch positions and see which one helps the ATU make the best match. Good luck and 73 Bob N6WG ----- Original Message ----- From: "Brian Lloyd" <[hidden email]> To: "elecraft Reflector" <[hidden email]> Sent: Tuesday, May 13, 2008 8:37 AM Subject: [Elecraft] Bal[un] (was: Buddipole vs. tuner and wire) > OK, I am convinced - keep the tuner and the wire. So, that brings up a > second question: balanced vs. unbalanced. > > Wire antennas that do not require a counterpoise are usually loops or > dipoles, i.e. inherently balanced even if not resonant. Most tuners > offer an unbalanced output. SGC says, just connect up the antenna. > Seems to me that a balun would improve things and keep RF off the coax > and power leads to the tuner. But how well do baluns handle huge > mismatch? > > Just off the top of my head, it seems to me that the tuner at the top > of a pole with two legs sloped down, i.e. inverted-V, would make a > pretty good omni all-band antenna. > > More thinking aloud. > > Brian Lloyd > Granite Bay Montessori School 9330 Sierra College Bl > brian AT gbmontessori DOT com Roseville, CA 95661 > +1.916.367.2131 (voice) +1.791.912.8170 (fax) > > PGP key ID: 12095C52A32A1B6C > PGP key fingerprint: 3B1D BA11 4913 3254 B6E0 CC09 1209 5C52 A32A > > > > > _______________________________________________ > 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 _______________________________________________ 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 Brian Lloyd-6
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In reply to this post by n6wg
The BL2 (switchable balun) will handle 250 watts! That should be enough.
Dave W7AQK ----- Original Message ----- From: "Robert Tellefsen" <[hidden email]> To: "Brian Lloyd" <[hidden email]>; "elecraft Reflector" <[hidden email]> Sent: Tuesday, May 13, 2008 9:54 AM Subject: Re: [Elecraft] Bal[un] (was: Buddipole vs. tuner and wire) > Hi Brian > I don't recall if you mentioned what power level you > would be using with your K2. If it is running barefoot, > without the 100w PA, you could use one of the Elecraft > switchable baluns. They switch between 1:1 and 4:1 > ratios, giving you a good chance to match most balanced > feeds. > > Even though the rig end of the line may be reactive, due > to impedance mismatches along the line, the switchable > balun can be used to reduce the amount of mismatch the > ATU then has to to cope with. > > This makes a simple dipole with tuned feeders a nice > multiband antenna. On a given band, try both switch > positions and see which one helps the ATU make the best > match. > > Good luck and 73 > Bob N6WG > > ----- Original Message ----- > From: "Brian Lloyd" <[hidden email]> > To: "elecraft Reflector" <[hidden email]> > Sent: Tuesday, May 13, 2008 8:37 AM > Subject: [Elecraft] Bal[un] (was: Buddipole vs. tuner and wire) > > >> OK, I am convinced - keep the tuner and the wire. So, that brings up > a >> second question: balanced vs. unbalanced. >> >> Wire antennas that do not require a counterpoise are usually loops > or >> dipoles, i.e. inherently balanced even if not resonant. Most tuners >> offer an unbalanced output. SGC says, just connect up the antenna. >> Seems to me that a balun would improve things and keep RF off the > coax >> and power leads to the tuner. But how well do baluns handle huge >> mismatch? >> >> Just off the top of my head, it seems to me that the tuner at the > top >> of a pole with two legs sloped down, i.e. inverted-V, would make a >> pretty good omni all-band antenna. >> >> More thinking aloud. >> >> Brian Lloyd >> Granite Bay Montessori School 9330 Sierra College Bl >> brian AT gbmontessori DOT com Roseville, CA 95661 >> +1.916.367.2131 (voice) +1.791.912.8170 (fax) >> >> PGP key ID: 12095C52A32A1B6C >> PGP key fingerprint: 3B1D BA11 4913 3254 B6E0 CC09 1209 5C52 A32A > 1B6C >> >> >> >> >> _______________________________________________ >> 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 > > _______________________________________________ > 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 > _______________________________________________ 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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