[Amps] AL-1200 Pop

[Larry Carman]

Why would you want to prevent a device from performing
multiple task, especially one it wasn't designed for. An amplifier
sufficing as a bug zapper sounds fun.  With the lights turned out
and bugs swarming, you get the aurora borealis effect.

Regards,
Larry N5BIP

----- Original Message ----- 
From: "R.Measures" <r at somis.org>
To: "Thomas Hix" <w4th at hotmail.com>
Cc: <amps at contesting.com>
Sent: Friday, July 09, 2004 3:58 AM
Subject: Re: Ref: [Amps] AL-1200 Pop (Will Matney)



On Jul 8, 2004, at 10:48 AM, Thomas Hix wrote:

> I know this may sound stupid, but one time I had an amp that ran a
> pair of 3-500z tubes. It had been working fine, and suddenly when I
> was not transmitting, just listening, but had the amp in the operate
> mode, I also heard a loud POP!.....I tried the amp, and it worked as
> it always had, but I decided I had better see what had caused the
> pop.....I took of the top cover on looked down inside the amp, and
> there to my surprise was a large moth that was blown to
> smithereens....evidently it had flown inside the amp and made contact
> with the high voltage, and blew it's self to pieces.....I had all the
> lights off in the shack at the time, and I guess the glow of the
> 3-500z tubes was just more than the moth could resist.....The amp
> never did give me a problem as long as I owned it other than that one
> large BANG!
> Maybe you had something like this to happen to your AL-1200.

  Excellent point, Tom. Good engineering practice is to place screen
or perforated sheet metal at the air inlet to keep insects out.  For
instance, nothing much larger than a fruit fly can get into a SB-220,
provided that the perf-metal cabinet is in place.

cheers.

> 73
> Tom.....W4TH
>
>
>
>
>
>
> Tom's Tubes: Specializing in Amateur Radio Amplifier Tubes/Sockets &
> G3SEK Tetrode/Triode Boards & Kits http://www.tomstubes.com
>
>
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>
Richard L. Measures, AG6K, 805.386.3734.  www.somis.org

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