[R-390] Alternative to IERC tube shields?

[rbethman]

The specified reference includes MANY things that was intended to 
enlighten those whose life was almost intimate with these wonderfully 
designed pieces of equipment.

Not to be flippant, I also did not read the segment about destruction to 
prevent the equipment from falling into enemy hands.

I did not pay any attention to FSNs, as when I retired they had been 
renamed to NSNs, or National Stock Numbers.

This does not mean I didn't read the necessary information to properly 
manipulate the controls and make use of the radio.  It means that there 
are portions that simply did not get read.  It is like the "Unpacking" 
segment of my BC-610.  Neither the BC-610 NOR the R-390A came packed.

Patrick - Please turn on the spell check feature.

Bob - N0DGN

Patrick wrote:
> Thank you Davis por closing the discusion with facts.
>   

> ----- Original Message ----- 
> From: "David C. Hallam" <dhallam at rapidsys.com>
>
> Sent: Monday, August 17, 2009 4:36 PM
> Subject: Re: [R-390] Alternative to IERC tube shields?
>
>
>   
>> According to TM11-856A "when operating fixed table-top installation in a 
>> well ventilated case the top and bottom dust covers are to be removed 
>> along with the tube shields on V201, V202, V203, V204, V205, V206, V505, 
>> and V701.  This will reduce the bulb temperature of the tubes and will 
>> prolong tube life."
>>
>> David
>> KC2JD/4
>>
>>