Don,
Sorry, I seem to have had a 'senior moment'. On resetting its now OK!
Sorry for the bandwidth.
Dunno how it got to 220 but one of those things in life.
I will keep taking the pills!
73 Bob G3PJT
Don Wilhelm wrote:
> Bob,
>
> If CAL TPA is actually 220, that is much too high - The K2 microprocessor
> thinks the heat sink is at 220 degrees C!!
> Set it back to match the room temperature in degrees C when the heat sink is
> at the ambient temperature. (i.e. 22 rather than 220).
>
> 73,
> Don W3FPR
>
>
>> -----Original Message-----
>>
>> Yesterday I turned on and the fan came on even though the heatsink was
>> cold and when I tried to TX 'PA hot' came on and the PA was inhibited.
>>
>> 1. CAL tpa is 220 which is about right ~ 22C and Fan menu set nor.
>> 2. On TX - Q3 base is 0.6v - which I think is about right (RC4 going
>> high of course)
>> 3. On U1 RC7 is 5 and RC6 is low which is the correct output for Fan Hi
>> - which is what it is doing.
>> 4. Power control less than 10w and the K2 sends OK
>> 5. Firmware PA 1.06
>>
>> Any ideas?
>>
>> 73 Bob G3PJT
>>
>>
>
>
>
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