When should I expect the cooling fan in my 6300 to increase its' speed.

  • 1
  • Question
  • Updated 4 years ago
  • Answered
On my 6300, I cheated the setup and ran 30 watts while running JT-65. Keeping in mind the duty cycle of a constant signal, I placed a temperature probe at the exhaust and measured the air temp.
I saw a max temp of 45 deg C. The fan speed never changed. Since there is no adjustment like on my 3000, I wonder at what temp should the fan speed increase?

Roy - W5TKZ  
Photo of Roy - W5TKZ

Roy - W5TKZ

  • 124 Posts
  • 13 Reply Likes

Posted 4 years ago

  • 1
Photo of Steve - N5AC

Steve - N5AC, VP Engineering / CTO

  • 1031 Posts
  • 1002 Reply Likes
Official Response
The PA temp reading reported by SmartSDR (which DDUtil displays) is the temp we use to adjust the fan speed.  For testing in the lab, we use a thermocouple inserted into the heat sink and found that the temperatures are fairly close.  The reported temp and heat sink temp lag the junction temp, of course.