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Re: AM tower tuning affected by fog
To: CRTech <crtech@crtech.org>
Subject: Re: AM tower tuning affected by fog
From: Willie Barnett <wbradiolists@gmail.com>
Date: Mon, 15 May 2017 15:26:49 -0400
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Wow... that's a weird one! (So's the tower being overloaded by resting birds! Wow!)

POSSIBLY, there may be a capacitor or insulator in the tuning unit that has a crack... and the moisture gets into it, causing the problem. This can also happen to the tower base insulator. (I hope not!!)

There also could be critter nests in places where the moisture wets the nest and de-tunes something. One station I had worked for years ago, had a mouse build a nest INSIDE one of the coils in the tuning unit! Once evicted, the stations parameters returned to normal.

Willie...



On Mon, May 15, 2017 at 2:50 PM, Tom Van Gorkom <tomvangorkom@gmail.com> wrote:
We have toroid transformers for sampling. The CP did increase by about 1/2 amp along with reflected power by a few watts, but still not a big change. I agree that it can't be much out of tune since tower 4 is usually very affected by tower 3's tuning - closest proximity of the 4 towers. Tower 1 is reference.

Follow-Ups: Re: AM tower tuning affected by fog
(Tom Van Gorkom <tomvangorkom@gmail.com>, 15 May 2017 19:51:47 -0000)
References: AM tower tuning affected by fog
(Tom Van Gorkom <tomvangorkom@gmail.com>, 15 May 2017 14:26:10 -0000)
Re: AM tower tuning affected by fog
(Lou Mueller <loumueller@wedoradio.com>, 15 May 2017 15:10:33 -0000)
Re: AM tower tuning affected by fog
(Kevin Kidd <kkbroadcastengineering@gmail.com>, 15 May 2017 18:12:26 -0000)
Re: AM tower tuning affected by fog
(Tom Van Gorkom <tomvangorkom@gmail.com>, 15 May 2017 18:51:04 -0000)
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