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Author Topic: the best external remote atu  (Read 1166 times)
9H1FQ
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Posts: 144




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« on: April 21, 2011, 04:03:55 AM »

Hi all,

I intend to buy an external atu, as I believe that the swr, should be tamed at the antenna external  feed point, not at transceiver point.
Which is the most quoted, the best on the market for all situations - long wire, dipole, G5RV, etc etc. indeed for every situation !!
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W5DXP
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Posts: 3577


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« Reply #1 on: April 21, 2011, 04:52:31 AM »

I don't know which is best but I am satisfied with my old SG-230. However, low-loss transmission lines (open-wire/ladder-line) are usually just as functional as autotuners at the antenna.
« Last Edit: April 21, 2011, 04:55:02 AM by W5DXP » Logged

73, Cecil, www.w5dxp.com
The purpose of an antenna tuner is to increase the current through the radiation resistance at the antenna to the maximum available magnitude resulting in a radiated power of I2(RRAD) from the antenna.
N3JBH
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Posts: 2358




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« Reply #2 on: April 21, 2011, 07:56:42 AM »

I agree with W5DXP just run ladder line it works.   Jeff
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VA7CPC
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Posts: 2383




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« Reply #3 on: April 21, 2011, 06:09:53 PM »

The most common marine-mobile tuner has been the SG-230.   Boats are tough environments.   SGC suggests, if you mount the tuner outside, you put a plastic pail over it to protect it from rain.

               Charles
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N4HRA
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Posts: 280




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« Reply #4 on: April 22, 2011, 04:39:44 PM »

I have 2 SGC 239 ATU and I love them I use 1 for my G5RV Jr and the other for my eagleone vertical.

What I like is you just need 12Vdc and RF,

My 2 cents

N4HRA
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