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6600M Fan Speed Questions

KC2QMA_John
KC2QMA_John Member ✭✭
edited September 2019 in FLEX-6000 Signature Series
«1

Answers

  • KC2QMA_John
    KC2QMA_John Member ✭✭
    edited July 2019
  • KC2QMA_John
    KC2QMA_John Member ✭✭
    edited August 2019
  • Joe N3HEE
    Joe N3HEE Member ✭✭
    edited August 2019
  • Joe N3HEE
    Joe N3HEE Member ✭✭
    edited August 2019
  • KC2QMA_John
    KC2QMA_John Member ✭✭
    edited August 2019
  • Joe N3HEE
    Joe N3HEE Member ✭✭
    edited August 2019
    John.  You could use FR Stack or other third party Flex app (FR Logger, etc) to monitor PA temp and see when the fan speeds up.  I havent paid much attention to fan speed but it does ramp up when the PA warms up.  At idle it runs at a fairly low RPM and is fairly quiet.
  • KC2QMA_John
    KC2QMA_John Member ✭✭
    edited August 2019
    I have FlexMeter so I will see when the fan goes to hi speed. I wonder if it slowly ramp's up or switches to hi speed.
    we shall see....
  • KC2QMA_John
    KC2QMA_John Member ✭✭
    edited August 2019
  • KC2QMA_John
    KC2QMA_John Member ✭✭
    edited August 2019
  • Bill -VA3WTB
    Bill -VA3WTB Member ✭✭✭
    edited August 2019
    John, while this is all a fun project for to do a few things should be mentioned.
    #1 When Gerald desgned these radios, full duty cycle was a main consideration.

    #2 The over temp shut down protection will not allow any damage to the radio, even if you try to damage it you couldn't.
    I read a staement from Erec saying that the over temp shut down is a long long way from the temp needed to damage the PA. It is rated at a much higher temp rating.

    It is advisable to never run any radio in direct sunlight, in the case of the Flex it will not hurt it but it may shut down more often then you like due to temp.
  • KC2QMA_John
    KC2QMA_John Member ✭✭
    edited August 2019
  • KC2QMA_John
    KC2QMA_John Member ✭✭
    edited August 2019
  • Joe N3HEE
    Joe N3HEE Member ✭✭
    edited August 2019
  • KC2QMA_John
    KC2QMA_John Member ✭✭
    edited August 2019
  • Joe N3HEE
    Joe N3HEE Member ✭✭
    edited August 2019
    Just curious, what temps do you need to reach to get the fan to run over 1500 RPM ?  I wonder if the 1500 RPM cutoff can or will be reached in a typical contest situation running 100 watts ? Or FT8 use at 100 watts ? I will have to watch my PA temps during the next RTTY contest.

  • VK7WH Winston
    VK7WH Winston Member ✭✭✭
    edited August 2019
    Nice Meters, John. Can I ask where you got the software. I presume it is the public domain. Are the meters scalable in size? Many thanks Winston
  • KC2QMA_John
    KC2QMA_John Member ✭✭
    edited August 2019
  • KC2QMA_John
    KC2QMA_John Member ✭✭
    edited August 2019
  • KC2QMA_John
    KC2QMA_John Member ✭✭
    edited August 2019
  • Steve-N5AC
    Steve-N5AC Community Manager admin
    edited August 2019
  • KC2QMA_John
    KC2QMA_John Member ✭✭
    edited August 2019
  • John KB4DU
    John KB4DU Member ✭✭✭✭
    edited August 2019
  • KC2QMA_John
    KC2QMA_John Member ✭✭
    edited August 2019
  • Bill -VA3WTB
    Bill -VA3WTB Member ✭✭✭
    edited August 2019
    They may have considered that if there were cooling issues, but there are none. Many customers run these radios at full duty cycle without any problems. Even at 194F is well under the operation range of the LDMOS 

    It is intersting there is no information on the shutdown temp of the radio however.
  • KC2QMA_John
    KC2QMA_John Member ✭✭
    edited August 2019
  • KC2QMA_John
    KC2QMA_John Member ✭✭
    edited August 2019
  • KC2QMA_John
    KC2QMA_John Member ✭✭
    edited August 2019
  • KC2QMA_John
    KC2QMA_John Member ✭✭
    edited August 2019
  • Joe N3HEE
    Joe N3HEE Member ✭✭
    edited August 2019
    Bet you a fan they won’t call you ! :). For some reason they hold technical info pretty close to the vest. Trade secrets I suppose. It would be refreshing if they would be a little more transparent with things like this. I predict they offer an upgraded fan in the next hardware release for $49.99 !

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