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Tape Measure Dipole
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Dave Edwards
HyGain made that gadget for YEARS....And I think perhaps they got the idea from Collins!!
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...Dave ----- Original Message -----
From: Gerry Wheeler KG4NBB To: FT-817 Sent: Sunday, July 13, 2003 8:41 AM Subject: Re: [FT817] Tape Measure Dipole On Sun, 2003-07-13 at 08:31, rudeparts wrote: > Rupert, G6HVY and steel tape measure dipole Can you elaborate on your tape measure dipole? I've had that thought myself -- variable length, and already accurately measured! Any photos? -- Gerry Wheeler KG4NBB Naples, FL N26.28 W081.76 Yahoo! Groups Sponsor ADVERTISEMENT To unsubscribe from this group, send an email to: FT817-unsubscribe@... and for a great FAQ ( Frequently Asked Questions ) see Some really good technical info at: Please note that your messages and files sent to this group may appear anywhere on the Internet or in print without notice or compensation. Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. |
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prcradio
If they got the idea from Collins then why did Collins buy Hy-Gain
tape dipoles for the KWM-2 portable set ups? Mike --- In FT817@..., "Dave Edwards" <kd2e@c...> wrote: HyGain made that gadget for YEARS....And I think perhaps they gotthe idea from Collins!! ...Davethought myself -- variable length, and already accurately measured! Anyphotos? --Frequently Asked Questions ) see Some really good technical info at: Please note that your messages and files sent to this group mayappear anywhere on the Internet or in print without notice or compensation. Service. |
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Dave Edwards
Well, perhaps it was vice-versa...who cares??
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...Dave ----- Original Message -----
From: prcradio To: FT817@... Sent: Sunday, July 13, 2003 3:11 PM Subject: [FT817] Re: Tape Measure Dipole If they got the idea from Collins then why did Collins buy Hy-Gain tape dipoles for the KWM-2 portable set ups? Mike --- In FT817@..., "Dave Edwards" <kd2e@c...> wrote: > HyGain made that gadget for YEARS....And I think perhaps they got the idea from Collins!! > ...Dave > ----- Original Message ----- > From: Gerry Wheeler KG4NBB > To: FT-817 > Sent: Sunday, July 13, 2003 8:41 AM > Subject: Re: [FT817] Tape Measure Dipole > > > On Sun, 2003-07-13 at 08:31, rudeparts wrote: > > Rupert, G6HVY and steel tape measure dipole > > Can you elaborate on your tape measure dipole? I've had that thought > myself -- variable length, and already accurately measured! Any photos? > -- > Gerry Wheeler KG4NBB > Naples, FL > N26.28 W081.76 > > > Yahoo! Groups Sponsor > ADVERTISEMENT > > > > > To unsubscribe from this group, send an email to: > FT817-unsubscribe@... and for a great FAQ ( Frequently Asked Questions ) see > Some really good technical info at: > Please note that your messages and files sent to this group may appear anywhere on the Internet or in print without notice or compensation. > > > > Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. > > > Yahoo! Groups Sponsor ADVERTISEMENT To unsubscribe from this group, send an email to: FT817-unsubscribe@... and for a great FAQ ( Frequently Asked Questions ) see Some really good technical info at: Please note that your messages and files sent to this group may appear anywhere on the Internet or in print without notice or compensation. Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. |
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rudeparts
--- In FT817@..., Gerry Wheeler KG4NBB <gwheelerx@q...>
wrote: On Sun, 2003-07-13 at 08:31, rudeparts wrote:thoughtRupert, G6HVY and steel tape measure dipoleCan you elaborate on your tape measure dipole? I've had that myself -- variable length, and already accurately measured! Anyphotos? --I bought a couple of 5m long steel tape measures from Maplin (three quid each - that's around $5) and silver soldered pigtails to the steel thumb tags at the ends. I thought this would make a handy portable dipole, as all I would have to do is attach the tape measure cases to trees or other nearby objects using bungees or cable ties, and hoped it would resonate at 20m -- other bands being usable via my Z11. I haven't been able to try it for transmission on HF yet -- soon, Igor, soon -- but I did pop out and test everything the other day on Hampstead Heath, at least as far as I could. I hooked the aerial up to two branches of a tree, pulled the tape measures out to their fullest extension and ran it into the back of the FT-817 via ten metres of RG-58; no tuner. The ends of the dipole were around 2m off the ground, and the middle was around 50cm. Not ideal. I was rather surprised to find it hit 1.3:1 on Six at full extension and with no tuner, but even more surprised to have a LZ3 come back to me when I answered his CQ. I may have babbled a bit... From what I've read, the steel used in these tape measures is quite resistive, brittle and difficult to work with, which is why I decided to leave the tape itself intact and just connect to the end bit. But for six quid per self-packing dipole, I reckon it's worth a go -- and not only does the aerial tidy itself away after you've used it, but you can measure stuff with it at other times. Photos? Sure. I'll do some this week... but really, there's nothing much to see except my lousy soldering. Next weekend I'm away, but the weekend after I may revisit the Heath and take some pictures of the dipole in action. Rupert, G6HVY and (counter)poised for HF action |
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Michael Colvin
I thought I remembered seeing an article on the Internet about a Tape
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Measure Dipole. I did a search and found it at . This is a pretty nice article, complete with pictures and enough information to be able to replicate it, or make something similar. Michael Colvin, W6CUJ w6cuj@... for amateur radio correspondence mcolvin@... for genealogy-related mail mcolvin@... for everything else. See the Colvin Family History web site at "Pay no attention to the man behind the curtain!" ----- Original Message -----
From: "rudeparts" <rupertgo@...> To: <FT817@...> Sent: Sunday, July 13, 2003 2:31 PM Subject: [FT817] Re: Tape Measure Dipole --- In FT817@..., Gerry Wheeler KG4NBB <gwheelerx@q...>Questions ) see Some really good technical info at: Please note that your messages and files sent to this group may appearanywhere on the Internet or in print without notice or compensation.
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