[600MRG] 600MRG Digest, Vol 78, Issue 44

[Dave Riley]

 From what I dig out of the article, the tower base is @ ground and the 
smaller down leads are fed from the bottom through a tuner, an L network 
would do fine... In this case the tower and wires are anything but 
50+/-J0...  Must measure...

Before the end of this season I will pull all coax leads in to the 
shack, hook them together and look at the Z, then prepare a network and 
try on air...

But the wire loop here is nearby the 72' tower with it's antlers so it 
may be near optimized already... The tower is slightly to the northeast 
of the loop so that may account for some gain in that direction...

More real and closer is to erect another loop in the near field of the 
present one, resonate and then see if RR or DX changes...

Then place second parallel loop in close @ near critical coupling, but 
first must clean out some surplus noise and help RX..

Too much fun and not enuf time every day...  DaveR  QRV JT9  ( when is 
best time for JT9? ) JT9 reflector not working...




On 10/26/2017 1:00 PM, 600mrg-request at w7ekb.com wrote:
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> Today's Topics:
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>     1. Approval for operation on both new bands! (k0htf at netins.net)
>     2. Unipole (Dave Riley)
>     3.  Unipole (James Hollander)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Wed, 25 Oct 2017 16:05:58 -0500
> From: k0htf at netins.net
> To: 600MRG at w7ekb.com
> Cc: k0htf at arrl.net, docgruis at gmail.com
> Subject: [600MRG] Approval for operation on both new bands!
> Message-ID: <ffab0169c4af0d73193a7058816bc1bf at netins.net>
> Content-Type: text/plain; charset=US-ASCII
>
> Good afternoon.
>
> I received my approval today to operate on both new bands and have
> acknowledged that.
>
> Mr. Etzel apologized for the delay saying that they have been
> overwhelmed by the requests.
>
> Documentation always seems a good idea.
>
> 73 & travel safe!
>
> Tom / Doc.  -  K0HTF
>
> ------------------------------
>
> Message: 2
> Date: Thu, 26 Oct 2017 08:29:19 -0400
> From: Dave Riley <dave.riley3 at verizon.net>
> To: 600mrg at w7ekb.com
> Subject: [600MRG] Unipole
> Message-ID: <ad91748e-cbbd-34a3-200e-234071945059 at verizon.net>
> Content-Type: text/plain; charset=utf-8; format=flowed
>
> The unipole name came up recently and looks like the perfect sleeper
> antenna for a 630m antennaphile...
>
> https://www.jmu.edu/wmra-eng/archive/mullaney-be.pdf
>
> comments??
>
>
>
>
>
> ------------------------------
>
> Message: 3
> Date: Thu, 26 Oct 2017 11:15:11 -0400
> From: James Hollander <mrsocion at aol.com>
> To: 600mrg at w7ekb.com
> Subject: [600MRG]  Unipole
> Message-ID: <15f59405d77-c0c-15d36 at webjas-vac120.srv.aolmail.net>
> Content-Type: text/plain; charset=utf-8
>
>
> Does it require quarter wavelength vertical height? Or can the usual electrically short 630m TX antenna be bottom loaded with inductance(s) to get unipole operation?  Interesting!  Jim H  W5EST
>   
>   
> -----Original Message-----
> From: Dave Riley <dave.riley3 at verizon.net>
> To: 600mrg <600mrg at w7ekb.com>
> Sent: Thu, Oct 26, 2017 7:30 am
> Subject: [600MRG] Unipole
>
> The unipole name came up recently and looks like the perfect sleeper
> antenna for a 630m antennaphile...
>
> https://www.jmu.edu/wmra-eng/archive/mullaney-be.pdf
>
> comments??
>
>
>
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> Subject: Digest Footer
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> ------------------------------
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> End of 600MRG Digest, Vol 78, Issue 44
> **************************************
>