On Oct 30, 2006, at 6:38 PM, Tony King - W4ZT wrote:
R L Measures wrote:
On Oct 30, 2006, at 11:08 AM, zerobeat40 wrote:
Forget the link to the datasheet:
The only thing I have against the YC-156 is the noise...damn, they're
loud, if you're wanting to run power and keep 'em cool.
One advantage of an 8171 is that a quiet 1700rpm blower will cool one
VFB on SSB.
You can get a 1500 RPM blower from Dayton that will cool the YC-156/179
and not be loud. They've got a nice two speed blower that'll do even
better if you sense the cooling air temp and switch the speed ;)
Two speeds are good, Tony, and proportional speed control with a DC- brushless motor is better yet Tektronix was doing this 30-yrs ago.
73, Tony W4ZT
Yahoo! Groups Links
R L Measures, AG6K, 805.386.3734
r@..., , rlm@..., www.somis.org
