[AMRadio] RCA blower

[Rick Brashear]

Don,

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.

Rick/K5IZ

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
>