[Amps] Alternative cooling strategies for SB-220?

[Bill, W6WRT]

ORIGINAL MESSAGE:

On Tue, 15 Dec 2009 16:18:10 -0700, "Bill W5WVO" <w5wvo at cybermesa.net> wrote:

>
>I have a 6-meter-converted SB-220 equipped with the upgraded
>Harbaugh cooling fan, which provides more air circulation volume
>than the original Heathkit fan. It does a great job, but sounds
>like a B-17 revving up for takeoff.

REPLY:

Not having an SB-220 I can't say how well it would fit, but the EBM-Papst
blowers are powerful and quiet, although expensive. In my 8877 amp I am using a
G2E108-AA05-44 which is rated at 91 CFM (overkill for sure) and is very quiet,
hardly noticeable. Newark carries them at about $144. A smaller one would no
doubt do.

73, Bill W6WRT