[Amps] Fabrication & part placement

jeremy-ca km1h at jeremy.mv.com
Thu Apr 17 14:07:43 EDT 2008


Leave at least 1" and 2" preferably between any variable cap and coils from 
sheet metal and especially any steel items. Otherwise you will have 
coupling, detuning and wasted power. The Dentron Clipperton L is a prime 
example of this as well as any of the Amp Supply "No Tune" models.

Carl
KM1H





----- Original Message ----- 
From: "Colin Lamb" <k7fm at teleport.com>
To: <kg7hf at comcast.net>; <amps at contesting.com>; <amps at contesting.com>
Cc: <amps-request at contesting.com>
Sent: Thursday, April 17, 2008 1:51 PM
Subject: Re: [Amps] Fabrication & part placement


> If you look at the plate tuning capacitor, you will see what the minimum 
> spacking needs to be between the top of the tube and the cabinet.  If it 
> does not arc in the cap, it will not arc to the cabinet.  Remember, 
> however, that you 30 pound cat can jump on top of the top and deflect it a 
> bit, so allow that.  Normally, the air goes up, so the spacing for air 
> will not matter too much.
>
> Or, you can use the rule of thumb.  If you can put your thumb between the 
> plate cap and the cover, that is more than sufficient.  Except, how do you 
> get your thumb in their with the cover on.
>
> And, of course, turn the high voltage off before sticking your thumb in.
>
> 73,  Colin  K7FM
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