|[AMRadio] RCA blower|
rickbras at airmail.net
Sat May 27 22:39:50 EDT 2006
Thanks for the advice. If I can find a 220 volt motor I fully intend to
install a switch some where that will reduce the power to 110 volts.
However, I'm having a hard time locating one so far. Even though I
fully intend to remote the transmitter I would like to have the option
of having it in the shack.
Donald Chester wrote:
> 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.
> Don k4kyv
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