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.

Adjusting AGC-T -- with ATU 'set' or not

VE7ATJ_Don
VE7ATJ_Don Member ✭✭✭✭
in SmartSDR for Windows

Maybe this is a newbie type of quetion, but after 5 years of Flex ownership and using AGC-T, this just occurred to me….

Should I be adjusting the AGC-T with the ATU in bypass mode or should I let the ATU find a 'solution' for the frequency (sometimes increasing noise as well as signals) THEN adjust the AGC-T?

Or does it even matter?

Thoughts?

Answers

  • KD0RC
    KD0RC Member, Super Elmer Moderator

    Hi Don, adjust the AGC-T with the ATU set the way you will have it set during operation. So if will be engaged while operating, engage it, and then set the AGC-T.

  • Sergey KN7K
    Sergey KN7K Member ✭✭✭

    "Or does it even matter?"

    I do not see ATU affect AGC-T, so it does not matter (for me).

    You can experiment and see if you notice any difference.

  • KD0RC
    KD0RC Member, Super Elmer Moderator

    Hi Don, one other thought. If the antenna is near resonance, then whether the tuner is in or out probably doesn't make much difference. If the antenna is pretty far off resonance (or is a non-resonant type), you should get better results adjusting the AGC-T with the tuner inline and tuned.

  • VE7ATJ_Don
    VE7ATJ_Don Member ✭✭✭✭

    Hi Len… yea, that's what I was thinking as well, as my experience (43' vertical) is that when the ATU has found a 'solution', noise and signal strength both increase.

    Adjusting AGC-T after ATU was what I was doing in the past, but when I had to re-do the ATU after the .21 update, it starting me thinking. (a dangerous thing :-) )

    Anyway, thanks for the confirmation.

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