Welcome to the new FlexRadio Community! Please review the new Community Rules and other important new Community information on the Message Board.
Need the latest SmartSDR, Power Genius, Tuner Genius and Antenna Genius Software?
SmartSDR v3.8.23 and the SmartSDR v3.8.23 Release Notes
SmartSDR v2.12.1 and the SmartSDR v2.12.1 Release Notes
Power Genius XL Utility v3.8.9 and the Power Genius XL Release Notes v3.8.9
Tuner Genius XL Utility v1.2.11 and the Tuner Genius XL Release Notes v1.2.11
Antenna Genius Utility v4.1.8
SmartSDR v3.8.23 and the SmartSDR v3.8.23 Release Notes
SmartSDR v2.12.1 and the SmartSDR v2.12.1 Release Notes
Power Genius XL Utility v3.8.9 and the Power Genius XL Release Notes v3.8.9
Tuner Genius XL Utility v1.2.11 and the Tuner Genius XL Release Notes v1.2.11
Antenna Genius Utility v4.1.8
If you are having a problem, please refer to the product documentation or check the Help Center for known solutions.
Need technical support from FlexRadio? It's as simple as Creating a HelpDesk ticket.
Need technical support from FlexRadio? It's as simple as Creating a HelpDesk ticket.
When should I expect the cooling fan in my 6300 to increase its' speed.

RoyS
Member ✭✭
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
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
0
Answers
-
According to an earlier Flex posting in this community the fans switch to hi speed at 70 degrees C and return to low at 55 degrees C. The temp is measured on the flange of the PA transistors. The absolute max temperature for the PA transistor junction is 175 degrees C.
1 -
I run DDutil and it gives a PA temp reading. Maybe more reliable than measuring air temp?
0 -
I believe you are correct about DDUTIL0
-
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.0
Leave a Comment
Categories
- All Categories
- 311 Community Topics
- 2.1K New Ideas
- 526 The Flea Market
- 7.7K Software
- 6K SmartSDR for Windows
- 144 SmartSDR for Maestro and M models
- 385 SmartSDR for Mac
- 248 SmartSDR for iOS
- 228 SmartSDR CAT
- 169 DAX
- 352 SmartSDR API
- 8.9K Radios and Accessories
- 7.1K FLEX-6000 Signature Series
- 108 FLEX-8000 Signature Series
- 886 Maestro
- 43 FlexControl
- 852 FLEX Series (Legacy) Radios
- 841 Genius Products
- 414 Power Genius XL Amplifier
- 274 Tuner Genius XL
- 99 Antenna Genius
- 267 Shack Infrastructure
- 188 Networking
- 428 Remote Operation (SmartLink)
- 124 Contesting
- 686 Peripherals & Station Integration
- 125 Amateur Radio Interests
- 860 Third-Party Software