[Elecraft] Cooling Fans

[Mike Harris]

Hi,

FWIW.

Test conditions measured under the K3 DISP menu:

14.1V
1.38A Sub RX on
PA 32C
FP 40C

PA fans off
PA fans on/off at 36C/35C

Room temp 22C

K3 FP and PA temp sensors calibrated against a laboratory thermometer 
adjacent to the K3.

Never really noticed when the PA fans come on in idle conditions due to 
PC fan noise.

Regards,

Mike VP8NO

On 19/07/2020 12:15, John Simmons wrote:
 > Tom,
 >
 > Interesting post. I thought this was the case with my K3 also, but i 
figured out later that it was the fan in my power supply instead. Poor 
hearing!
 >
 > -de John NI0K
 >
 > Tom Doligalski via Elecraft wrote on 7/19/2020 8:41 AM:
 >> I am the original owner of K3/100 #969, which still works great.
 >>
 >> I’ve noticed that recently the cooling fan comes on occasionally 
even if the radio is on, but not in use (volume down, no transmitting). 
FP temperature shows 41 C, and PA temperature is at 35 C
 >>
 >> This is not at objectionable at all, but made me wonder if this was 
a cause for concern.
 >>
 >> Any ideas?
 >>
 >> Tom W4KX

On 19/07/2020 12:15, John Simmons wrote:
> Tom,
> 
> Interesting post. I thought this was the case with my K3 also, but i 
> figured out later that it was the fan in my power supply instead. Poor 
> hearing!
> 
> -de John NI0K
> 
> Tom Doligalski via Elecraft wrote on 7/19/2020 8:41 AM:
>> I am the original owner of K3/100 #969, which still works great.
>>
>> I’ve noticed that recently the cooling fan comes on occasionally even 
>> if the radio is on, but not in use (volume down, no transmitting). FP 
>> temperature shows 41 C, and PA temperature is at 35 C
>>
>> This is not at objectionable at all, but made me wonder if this was a 
>> cause for concern.
>>
>> Any ideas?
>>
>> Tom W4KX