[Amps] What blower?

[Mike]

Does the GS-35B require 88 cfm at sea level?  Seems several weeks ago 
someone mentioned the 88 cfm was for operation of the tube at other 
than sea level (what that level is wasn't stated).  The sea level air 
cooling figure was 22 cfm, which is less than the for the 8877 (38 
cfm and I don't know if this is at sea level or not).

Is there a confirmed reference for less cooling air at sea level for 
the GS-35B?



>At 91 cfm back pressure is 0.25", it is 0.7" at 55 cfm.
>Better for a GS35 is the model G2S-108 with 0.6" at 100 cfm.
>
>73
>Peter
>
>
>
>-----Original Message-----
>From: amps-bounces at contesting.com [mailto:amps-bounces at contesting.com] On
>Behalf Of R.Measures
>Sent: Dienstag, 31. Januar 2006 12:48
>To: Dudley Hurry
>Cc: Amps at contesting.com
>Subject: Re: [Amps] What blower?
>
>
>On Jan 30, 2006, at 5:23 PM, Dudley Hurry wrote:
>
> > Mike,
> >
> > Don't forget about EMB blowers..   They are German made and very quiet
> > for
> > the CFM/backpressure created..  They have one, model G2E 108-AA01-32
> > that
> > can develop 91 cfm @54 dBA noise and weights 48 ozs..
>
>How much pressure?
> >
> > http://www.ebmpapst.us/
> >
> > Good luck,
> > Dudley
> > WA5QPZ
> >
> >
> >
> > At 11:32 AM 1/28/2006 +0000, Mike Bondarev wrote:
> >> Hi again!
> >> Thanks to all of you for your comments. GU-84B need 147CFM and GU-78B
> >> need 165CFM airflow. But this is for full power plate dissipation
> >> continuous key down. In SSB and CW you can have less.  So I'll look
> >> for Dayton 2C647, 4C006 and 4C446. I hope the quality of this blowers
> >> is good for long time operations.
> >>
> >> Regards, Mike RL3BM
> >> ex. UA6LU
> >>
> >>
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> >
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> >
> >
>
>Richard L. Measures, AG6K, 805.386.3734.  www.somis.org
>
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         73,
         Mike, K4GMH