|[AMRadio] RCA blower|
k4kyv at hotmail.com
Sat May 27 22:11:05 EDT 2006
>From: Rick Brashear <rickbras at airmail.net>
>Thanks for the tips, Paul. There is no doubt the service will be
>considerably lighter than its original application and likely I could get
>by with less air flow. I'd just like to get it back close to original if
>possible. I will be looking for a quieter blower, no doubt. However, I've
>been searching for that elusive "quiet blower" for some time for my 3K
>Premier and have yet to find it.
I cut down the blower noise on my Gates BC1-T to useable level by rewiring
the fans to run at half voltage. Originally they were on a 220v circuit,
so I rerouted the leads to run them on 110v. Despite reduced air flow, they
still keep the interior of the transmitter cabinet cool, but instead of
sounding like a vacuum cleaner running, I can just barely hear them. The
transmitter is located about 15 ft from the operating position. Before the
modification, I had to disconnect the fans altogether because the
transmitter was too noisy to use in the same room.
I checked, and the fan motors do not run hot at reduced voltage, which can
be a problem with some electric motors.
There was an unused toggle switch on my transmitter, so I wired it to
operate the fans. With a flip of the switch, I can turn the fans on (at
1/2 voltage) or turn them off altogether. I usually do not run them in
winter, when I keep my shack at about 60 degrees F to save on heating fuel.
This message was typed using the DVORAK keyboard layout. Try it - you'll
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