Topband: Topband Digest, Vol 176, Issue 14

Tue Aug 29 14:05:46 EDT 2017

Hi everyone 
Now that I have narrowed down my antenna for top band , the inverted l ,what does the 
" crew" think about feeding the l with 600 ohm owl at the center at the top

Sent from my iPad

> On Aug 29, 2017, at 9:00 AM, topband-request at contesting.com wrote:
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> Today's Topics:
> 
>   1. Re: 160 4 SQUARE (Mike - W5JR)
>   2. Re: Inverted L successes (Wes Stewart)
>   3. Re: DX Engineering final field test of the 3Y0Z Bouvet 160
>      meter vertical (David Aslin G3WGN)
> 
> 
> ----------------------------------------------------------------------
> 
> Message: 1
> Date: Mon, 28 Aug 2017 23:29:30 -0400
> From: Mike - W5JR <w5jr.lists at gmail.com>
> To: TOPBAND <TOPBAND at CONTESTING.COM>
> Subject: Re: Topband: 160 4 SQUARE
> Message-ID: <BE6B7054-2B72-4B16-97CE-4284FD980519 at gmail.com>
> Content-Type: text/plain;    charset=us-ascii
> 
> And I had a great time in the winter TBDXC a couple of years ago QRP using the antennas at Mike's 160 farm. The TX array works very good. 
> 
> tnx
> Mike / W5JR
> Alpharetta GA
> 
>> On Aug 28, 2017, at 5:17 PM, Mike Greenway <K4PI at BELLSOUTH.NET> wrote:
>> 
>> Greg, N4CC,, I have been using something similar to what you are describing for about 10 years.  I have 140 ft of Rohn 25 with all Phillystrand guys.  The 4 verticals are supported by nylon cords running from the top of the tower.  The height of the tower allows me to have 90 ft verticals plus around 45 ft top hats at the proper spacing between verticals.  I am using a Comtek phasing box. At present around 40  135 ft radials on each vertical.  I never detuned the tower as the F/B and F/S have always been excellent so I did not see the need.  I did look into it but decided to leave as it was. It has been a very competitive transmit system. If you need any further details contact me.  73 Mike K4PI
>> _________________
>> Topband Reflector Archives - http://www.contesting.com/_topband
> 
> 
> ------------------------------
> 
> Message: 2
> Date: Mon, 28 Aug 2017 21:53:24 -0700
> From: Wes Stewart <wes_n7ws at triconet.org>
> To: topband at contesting.com
> Subject: Re: Topband: Inverted L successes
> Message-ID: <39e87c73-cdd8-bcf9-a43d-ab4d592a4d72 at triconet.org>
> Content-Type: text/plain; charset=utf-8; format=flowed
> 
> As the real estate people say, "Location, location, location."
> 
> Wes  N7WS
> 
>> On 8/28/2017 3:22 PM, JAYB1943 at OPTONLINE.NET wrote:
>> Last fall I installed an ?S-9? 43 ft vertical, added a tapped loading coil
>> at the base, with 10 on-the-ground radials about 100 ft long randomly run
>> all over my 60x90 house plot.  Rig is 300 watts - Started on 160 DXCC with
>> 32 entities, finished DXCC in one winter season.
>> My secret: JT65 !!!!  (tnx K1JT)
>>      Try anything ? you will be amazed how successful you can be on top-band
>> with a little patience and VERY modest antennas.           73, Jay NY2NY
>> _________________
>> Topband Reflector Archives - http://www.contesting.com/_topband
> 
> 
> 
> 
> ------------------------------
> 
> Message: 3
> Date: Tue, 29 Aug 2017 08:24:37 +0000
> From: David Aslin G3WGN <david at aslinvc.com>
> To: "topband at contesting.com" <topband at contesting.com>
> Subject: Re: Topband: DX Engineering final field test of the 3Y0Z
>    Bouvet 160 meter vertical
> Message-ID: <da73844062b54ce985352ee7dc423623 at THHSTE15D2BE6.hs20.net>
> Content-Type: text/plain; charset="us-ascii"
> 
> Tim, 
> This has probably already been said several times: this should be a DXE product!
> It would be a squeeze, but would just fit into my antenna field...
> 73, David G3WGN  M6O
> 
> 
> -----Original Message-----
> From: Topband [mailto:topband-bounces at contesting.com] On Behalf Of topband-request at contesting.com
> Sent: 29 August 2017 01:22
> To: topband at contesting.com
> Subject: Topband Digest, Vol 176, Issue 13
> 
> The DX Engineering and Bouvet Island teams have worked together to design an efficient 90 foot top loaded 160 meter vertical antenna that can be installed quickly and safely on Bouvet Island by the 3Y0Z team this January.
> 
> With a good radial system the difference in gain between a 120 ft (full quarter wavelength) vertical and this custom 90 foot top loaded vertical is less than 0.5 dB.
> 
> This vertical uses a custom designed heavy duty hinged pivot base with base insulators to accommodate a 40 foot falling derrick 3 inch heavy duty pipe for installation.
> 
> The vertical is base fed using two inductors to match to 50 ohms. The first
> 70 feet of the vertical is Universal Aluminum tower (12 inch face) and the top 20 feet is 1.875 inch diameter aluminum tubing.
> 
> There are guys at 30, 50 and 70 feet. There are also three 30 foot top loading wires attached to the top of the tubing that are tied to anchors 60 feet out from the base.
> 
> DXE is actually donating two of these vertical packages to the 3Y0Z team in case one gets damaged (there are 300 storms per year on Bouvet).
> 
> More details on the construction and the final test raising plus VSWR measurements are shown in the video filmed and produced (in 4K Ultra) by Greg, W8WWV.
> 
> https://www.youtube.com/watch?v=bSw-0TjaUiU
> 
> 73,
> Tim K3LR
> 
> 
> 
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> Subject: Digest Footer
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> ------------------------------
> 
> End of Topband Digest, Vol 176, Issue 14
> ****************************************