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6700 locks in transmit mode

Gary Schulz
Gary Schulz Member ✭✭
edited May 2020 in FLEX-6000 Signature Series
I have a 6700 that was recently repaired and calibrated by Flex however when transmitting at power levels about approximately 10 or 20 W the radio gets stuck in TX while in tune mode. It would seem to relate to too much reflected power since the antenna does not appear to be effectively tuned by the internal ATU. How effective is the tuner that is built in? Looks like I have an untuned vswr of around 2.7 to 1 so I would have thought the tuner would handle this. Seen this behavior on 3880. Is it common to have the radio lock into TX mode when seeing relatively high reflected power?

Answers

  • Bill -VA3WTB
    Bill -VA3WTB Member ✭✭✭
    edited May 2019
  • k3Tim
    k3Tim Member ✭✭✭
    edited May 2020
  • Pat N6PAT
    Pat N6PAT Member ✭✭
    edited May 2019
  • Jim Gilliam
    Jim Gilliam Member ✭✭
    edited May 2019
  • Gary Schulz
    Gary Schulz Member ✭✭
    edited May 2019
    I don't know if it required re-calibration per se, this was just part of the repair procedure.  This radio had some issues with the TR switching on both Ant 1 and Ant 2 ports since it was new so they replaced some surge suppression diodes and some transformer (balun?) that was related to the 2 meter band...  Now I have this major issue with the TX locking up and the only way to stop it from transmitting is to turn off the power supply.  Will not respond to anything else...

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