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-requ...@contesting.com wrote:
>
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> Today's Topics:
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> 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
> To: TOPBAND
> Subject: Re: Topband: 160 4 SQUARE
> Message-ID:
> 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 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
> To: topband@contesting.com
> Subject: Re: Topband: Inverted L successes
> Message-ID: <39e87c73-cdd8-bcf9-a43d-ab4d592a4...@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, jayb1...@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 +
> From: David Aslin G3WGN
> To: "topband@contesting.com"
> Subject: Re: Topband: DX Engineering final field test of the 3Y0Z
>Bouvet 160 meter vertical
> Message-ID:
> 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-boun...@contesting.com] On Behalf Of
> topband-requ...@contesting.com
> Sent: 29 August 2017 01:22
> To: topband@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 att