[Boatanchors] Amplifier window

[Duane Fischer, W8DBF]

A mirror arrangement would eliminate the radiation hazard/concern and 
project an image -
Duane Fischer, W8DBF/WPE8CXO
dfischer at usol.com
HHI: Halligan's Hallicrafters International
http://www.w9wze.net
HHRP: Historic Halligan Radio Project
hhrp.w9wze.net

----- Original Message ----- 
From: "rrkrr" <rrkrr at comcast.net>
To: "Ed" <eh54 at sbcglobal.net>
Cc: <Boatanchors at mailman.qth.net>
Sent: Wednesday, March 21, 2007 6:42 AM
Subject: Re: [Boatanchors] Amplifier window


> Ed,
> The glass isn't going to provide much Faraday shielding at HF radio 
> frequencies, regardless of type, if that's what your are concerned about. 
> Lots of old HF broadcast equipment with windows for viewing the tubes 
> included a layer of copper screen wire (like window screen) attached to 
> the glass, with the screen electrically bonded to the metal case around 
> the perimeter of the window.
>
> Bob K4ERR
>
> Ed wrote:
>> I have an old home brew amplifier with a small door in the front to peek 
>> inside at the tubes. I'd love to put a window in its place like the old 
>> broadcast amps of the early days before television,so I could see the 
>> glow all the time. I have considered X-ray glass, leaded glass, and glass 
>> from the door of a dead microwave oven. I'd like some opinions on my 
>> ideas and any ideas you may have?
>> Ed-KV5I
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>> ** List Administrator - Duane Fischer, W8DBF/W9WZE **   ** For 
>> Assistance: dfischer at usol.com **         $$ For vintage radio info, see 
>> the HCI web site $$      http://www.w9wze.org
>
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> ** List Administrator - Duane Fischer, W8DBF/W9WZE **   ** For Assistance: 
> dfischer at usol.com **         $$ For vintage radio info, see the HCI web 
> site $$      http://www.w9wze.org
>
>
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