Welcome to the FlexRadio Community! Please review the new Community Rules and other important new Community information on the Message Board.
The latest SmartSDR Software:
SmartSDR v4.1.5 | SmartSDR v4.1.5 Release Notes
SmartSDR v3.10.15 | SmartSDR v3.10.15 Release Notes

The latest 4O3A Genius Product Software:
The latest 4O3A Genius Product Software and Firmware
How to Receive Technical Support::
If you are needing assistance with FlexRadio products, 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.

6700 High SWR at the end of a transmission

Ross Biggar
Ross Biggar Member ✭✭
in FLEX-6000 Signature Series

Operating my 6700 I am seeing a high SWR of 1:1.6 and higher on tune and at the end of each SSB transmission.

I am using the 6700 into an OM Power amplifier, and then to a 4 element Steppir, and measuring /checking the SWR during transmission by an Array Solns Powermaster II. The odd thing is with the amplifier operating, the SWR comes down to about 1.06, which is what I would expect for the Steppir, BUT at the end of each transmission I can see the SWR shoots up to 1.6 or higher on the Powermaster II as the 6700 stops transmitting.

It happens on all bands, not just 20m.

I have just replaced the 6700 with one of my 6600,s and the SWR is constant at 1.06, , the SWR does not alter at the end of a transmission, so the problem is not the coax, the amp or the Steppir.

So what in the 6700 could be causing the problem, advice please.


Regards

Ross

ZL1WN

Answers

  • Ross Biggar
    Ross Biggar Member ✭✭

    6700 High SWR at the end of a transmission

    Ross Biggar

    Ross Biggar Member ✭✭ 12:54PM

    Operating my 6700 I am seeing a high SWR of 1:1.6 and higher on tune and at the end of each SSB transmission.

    I am using the 6700 into an OM Power amplifier, and then to a 4 element Steppir, and measuring /checking the SWR during transmission by an Array Solns Powermaster II. The odd thing is with the amplifier operating, the SWR comes down to about 1.06, which is what I would expect for the Steppir, BUT at the end of each transmission I can see the SWR shoots up to 1.6 or higher on the Powermaster II as the 6700 stops transmitting.

    It happens on all bands, not just 20m.

    I have just replaced the 6700 with one of my 6600,s and the SWR is constant at 1.06, , the SWR does not alter at the end of a transmission, so the problem is not the coax, the amp or the Steppir.

    So what in the 6700 could be causing the problem, advice please.


    Regards

    Ross

    ZL1WN

    Flag

    Off Topic

    Insightful

    Dislike

    Like

  • Gordon, ve7on
    Gordon, ve7on Member ✭✭

    Is it possible that you are reading the SWR to the input of the amp for the brief moment after the amp stops amplifying?

    Gordon, ve7on

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