The 3-500 is an easy tube to cool as it only takes a breeze to do so.
Adding chimneys and blowing the air up around them certainly makes the
cooling more efficient.
Also the remote blower with ducting to the amp mentioned earlier can
easily be used with these tubes and is the quietest of the lot where the
mechanical means is used. I'd probably use something a bit different
than a dryer hose, but you can move a lot of air that way.
The water cooling is easily adapted to some of the Russian tubes as the
finned anode cooler is removable on many of them including the GS-35B.
Also the vapor phase cooling (with distilled water) would be, or could
be very efficient.
73
Roger (K8RI)
Dave White wrote:
> I'll second that as a good idea. Also you may wish to mount the blower on
> rubber bushes to stop the vibrations from using the amp chassis as a soundbox
> and putting sound-deadening lagging in short pieces of plastic drainpipe
> around the air entry and exit vents.
>
> Or build something with a water cooled tube. Or even a vapour phase cooled
> tube as per the 'Stanley Steamer' in the old Eimac bulletin. The latter
> using the latent heat of evaporation is the most effective cooling method of
> the lot
>
> Cheers
> Dave G0OIL
>
> -----Original Message-----
> From: donroden@hiwaay.net
> To: amps@contesting.com
> Sent: 16/12/2009 00:51
> Subject: Re: [Amps] Alternative cooling strategies for SB-220?
>
> Build an enclosure that vents out the back... equipment built into
> the wall concept. That will drop the noise at least by half.
>
> Don WA4NPL
>
>
>
> Quoting "Bill W5WVO" <w5wvo@cybermesa.net>:
>
>
>> It already has, apparently. However, it was a serious question,
>> despite the obvious reality that some guys think wanting to reduce
>> the level of ambient noise in the shack is stupid. I'm sure there
>> must be some who share my desire for peace and quiet. :-)
>>
>
> [truncated by sender]
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