[Collins] 516F-2 Query

[Dr. Gerald N. Johnson]

I figured the best spot would be mounted to the rack case above the 
radio with suitable protective insulation to keep inquiring fingers off 
the +350.

It was published in the Hollow State News #52 about ten years ago.

73, Jerry, K0CQ, Technical Adviser to the Collins Radio Association.

On 1/23/2012 8:52 AM, Bruce H McIntosh wrote:
> On Sun, 2012-01-22 at 08:51 -0600, Dr. Gerald N. Johnson wrote:
>
>> In a review and update of a solid state regulator design for the R390, I
>> suggested mounting the pass transistors outside the radio to remove the
>> heat from that voltage drop besides the heat from the pair of 6082
>> heaters. Moving out that heat can't help but to reduce component aging
>> and thermal drift.
>
> So that would involve something like devising a heatsink-and-bracket
> arrangement that would hang out the backside of the radio, presumably
> attached to an existing set of screws so you don't have to bore holes in
> the chassis, yes?
>