[Collins] VR--- R-390/URR

[Dr. Gerald N. Johnson]

On Sun, 2008-03-02 at 15:21 +1100, Pete Williams wrote:
> TO Gerald Johnson
> 
> G'day Gerald... I have just downloaded your piece from HSN Spring 2001 and
> before going ahead with a a building project, wonder if there have been any
> updates. 

None that I know about. Haven't had a lot of feedback either.

> In the interim, I have just installed a 12  DC brushless fan
> powered from a bridge rectifier mounted within the PS module , extracting
> air from around the  6082's  and naturally a significant decrease in
> temperature --- bulb temperature at the glass /base meeting point measures
> around 57 C..--- this after the rx operating on bench for 4 hours. No doubt
> an improvement.I didn't check it  before however.! 
> Additionally the  odour of hot  resistors now absent too.! 
> Any Info appreciated, thanks .

The 6082 do dissipate a lot of heat, both their heaters and their
plates.

> Rgards 
>  Pete D.Williams VK3 IZ
> jupete at bigpond.net.au
> METUNG 3904 AUSTRALIA
> 

-- 
73, Jerry, K0CQ, Technical Advisor to the CRA
All content copyright Dr. Gerald N. Johnson, electrical engineer