Welcome to the FlexRadio Community! Please review the new Community Rules and other important new Community information on the Message Board.
Need the latest SmartSDR or 4O3A Genius Product Software?


SmartSDR v4.0.1 and the SmartSDR v4.0.1 Release Notes

SmartSDR v3.10.15 and the SmartSDR v3.10.15 Release Notes

The latest 4O3A Genius Product Software and Firmware
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.

High SWR shown only on 10 meters

Dave KD5FX
Dave KD5FX Member ✭✭
in FLEX-8000 Signature Series

Background - 8600 with 3.9.19.37287 S/W

Just upgraded to latest S/W today and cold booted radio afterward along with the PC.

I noticed this problem while on 3.9.18 so I upgraded to 3.9.19 just to see if it went away, it didn't. I show a high SWR all over the 10 meter band, around 1.9 to 2.0:1 over the whole band while I am connected to a dummy load that measures 1.1:1 on my external SWR meter and it also shows the same low SWR on my Elecraft KAT-500 External antenna tuner and the KPA amp. All other bands the Flex SWR meter agrees with the external SWR readings. I swapped out all the jumper cables between radio/amp/coax switch/SWR meter/dummy load and that didn't change the Flex's SWR error.

If I plug a dummy load directly into the back of the Flex the SWR is correct, it's reads very low. If I bypass the Elecraft amp and tuner the SWR still reads high on the FLEX.

I hooked up my trusty old reliable Kenwood TS-2000 to the same coax the 8600 used and it shows a low SWR, about a 1.2:1 while the FLEX shows 1.9 on the same coax at the same frequency. All other bands are OK.

What could cause this?

Comments

  • Mike-VA3MW
    Mike-VA3MW Administrator, FlexRadio Employee, Community Manager, Super Elmer, Moderator admin

    I would first reset the radio and make sure that the ATU isn't confused.

    If that doesn't solve it, you'll need to open a support ticket since it is still under Warranty.

  • Dave KD5FX
    Dave KD5FX Member ✭✭

    Thanks, Mike. Wouldn't the new software load and I did a cold boot after that have reset the radio? It was messed up before and after the new s/w and cold boot it's still messed up.

    Dave

  • KD0RC
    KD0RC Member, Super Elmer Moderator
    edited August 8

    Hi Dave, no, that is just a boot. First do an export of your profiles then do a factory reset. After the export, turn off the radio. Then press and hold the power switch until it turns white. Wait for the process to finish with a solid green light.

  • Dave KD5FX
    Dave KD5FX Member ✭✭

    Radio reset complete. Same problem. I'll file a support ticket.

    Thanks guys! 73, Dave

Leave a Comment

Rich Text Editor. To edit a paragraph's style, hit tab to get to the paragraph menu. From there you will be able to pick one style. Nothing defaults to paragraph. An inline formatting menu will show up when you select text. Hit tab to get into that menu. Some elements, such as rich link embeds, images, loading indicators, and error messages may get inserted into the editor. You may navigate to these using the arrow keys inside of the editor and delete them with the delete or backspace key.

Comment As ...

Categories