Rci-2995dxcf fan high & low

[Eldorado828]

The fans run full boar when plugged into the radio, they're loud and unnecessary when it's just receiving.

I'm thinking a 3 position switch a resistor to give low off and high.

Has anybody tried that and can give me some advice with the mod?

I'm all ears!

 

[jrd426]

I have used 12v fan speed controller from amazon before wired inline. May not be what you are looking for but thought i would mention it.
"Exqutoo 2Pack PWM Speed Controller Adjustable Driver Switch Low Voltage DC Motor Speed Controller with Speed Control Knob 1.8v 3v 5v 6v 12v 2A 30W h"

 

[Eldorado828]

I have used 12v fan speed controller from amazon before wired inline. May not be what you are looking for but thought i would mention it.
"Exqutoo 2Pack PWM Speed Controller Adjustable Driver Switch Low Voltage DC Motor Speed Controller with Speed Control Knob 1.8v 3v 5v 6v 12v 2A 30W h"

Hey, I appreciate that suggestion. I didn't know about that so I'm going to look at that option now.

 

[nomadradio]

That radio really doesn't need fans. The original version of that radio had an analog series-pass regulator dumping heat into the heat sink, along with the bridge rectifier. This pumped at least double the heat energy into that heat sink as the modern version. Only the linear resides on the heat sink now. The heat from the linear alone won't overheat it unless you tie a rubber band around the mike and walk away.

RCI made the fan a factory feature only after changing the power supply to a chinesium switchmode brick that doesn't dump any heat into the heat sink.

Go figure.

73

 

[Eldorado828]

Well the fan is already on it so I'm going to go ahead and use it.

I was just asking advice or if anyone else had done the modification.

 

[Wire Weasel]

I used like a 2 Watt 100ohm pot wired in series with a power leg on the fan. Mounted pot on the back with Knob. Nice variable speed controller.

 

[Shadetree Mechanic]

If you have two fans, you can wire them in series so they will only run half speed and they will be a lot quieter.

 

[sp5it]

Just use https://www.walmart.com/ip/Uxcell-T...-Temperature-Control-Switch-2-Count/838370460

Fans will start for a while only when needed.
Mike

 

[Eldorado828]

All of those are great ideas and I'll do a little research to see which one i run with.

Thank you gentleman!