Welcome to the new FlexRadio Community! Please review the new Community Rules and other important new Community information on the Message Board.
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.

RF Power meter and slider

DrTeeth Member ✭✭
edited June 2020 in SmartSDR for Windows
Is the power output slider and the power output meter supposed to agree? The RF meter and the meter on the ATU agree. I am currently on 80M, DIGU JT65. 100 on the slider gives 60-80W output on the meter. I noticed this as I increased the power slider to 40 and got output readings of 20W.

No significant voltage drop measured by DDUtil at 62 on slider, under 40 on meter.

Has the low power issue on digimodes been fixed? I do not recall seeing it in the release notes


  • W2NER
    W2NER Member ✭✭
    edited June 2020
    I believe the slider is in percentage not powr output like the power meter.
  • Steve N4LQ
    Steve N4LQ Member ✭✭
    edited March 2017
    One thing I do know is you can't get 100 watts out of these rigs. About 90 to 95 is tops. I have no idea why but I thought it was supposed to be fixed in one of the software updates.

  • Dudley-WA5QPZ
    Dudley-WA5QPZ Inactive Employee
    edited March 2018

    The RF output is regulated first with the  RF Power slider (maybe set to max RF required)   and then by the Audio or DAX level..   You DO NOT want the peak audio level to go Red at max,  just to the Red,  That's the peak in the level.   Adjust the DAX TX level for the RF output without going over into the Red in the Level meter..    So you could have the RF power at 100,  and adjust the DAX TX meter to give you 40 watts output in the RF Power meter..   That way the Audio level would be well below max not in the Red ,  and the IMD should be as good as it possibly can due to you will be driving the PA far less than full output..      

    Make sure that Proc and EQ are off if you are using USB instead of DigU  mode.  

  • Al K0VM
    Al K0VM Member ✭✭✭
    edited November 2017
      What is the max power output you can get at MAX TUN power ( same band, load conditions)?

    AL, K0VM
  • Bob G   W1GLV
    Bob G W1GLV Member ✭✭
    edited December 2016
    40% of 100 watts = 40 watts
  • Dave KD5FX
    Dave KD5FX Member ✭✭
    edited March 2015
    I get 100 watts PEP on SSB all the time. Measured on a BIRD watt meter into a 50 ohm dummy load, shows the same output on my Hexbeam. Works the DX like mad! Barefoot....

  • Nick - W2NER
    Nick - W2NER Member
    edited February 2015
    I'm getting 95 watts into a dummy load on my LDG AT-1000 with the external meter.  

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.