It's not variable speed, but on demand. When it turns on it's full on.
Must be something about the pitch of that sized fan that annoys me.
Maybe all the years working on 1U server farms at data centers.
73,
Steve
W1SRD
On 11/13/2024 9:47 AM, K9MA wrote:
I did a very simple mod to 1235M: A resistor in parallel with the
thermostat. This causes the fan to run continuously at low speed,
rather than cycling when demand is low. The fan runs at full speed
only during times when I'm transmitting a lot, when the fans in the
radio and amplifier drown it out.
The 1235P-M may be different, but I doubt it has a variable speed fan,
or this mod wouldn't be necessary.
73,
Scott K9MA
On 11/12/2024 8:00 PM, Steve Dyer W1SRD via CQ-Contest wrote:
My only gripe with the 1235P-M is the fan noise. Good PS otherwise.
73,
Steve
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