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rf power out
I just got the radio back from service due to a blown U5. On AM/FM/USB/LSB I have good power out as shown by the SmartSDR program and the amp meter on my power supply. Using the FM mode when I key the radio I show 100 watts RF out and the PS shows about 20 amps.
However, when I try digital modes the program shows no power out and the amp meter on the power supply only shows about 5 watts of power used.
The RF power slider is set to max and my SWR is about 1.25 : 1 through the radios tuner to my 80M loop.
Before I sent the radio in for the blown U5, the digital modes had good power out as shown by both the program and the PS.
Comments
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In digital modes, do you show audio levels in 3 places? The digital program, DAX and the Radio Level?
Make sure you have DAX selected on SSDR.
If all that doesn't work, stop and re-start DAX.
Mike
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and verify the TX audio passband is set to pass the "tones".0
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Where do I find that?
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Mike, I have a level shown in the DAX control panel TX stream that is almost full scale. I show very little change in the radio level. Nothing like it was before sending the radio in.
Shut down DAX, SSDR and WSJT-X. Restarted them all. Still the same. I show almost full scale in the DAX control panel, not very much in the radio level. I am using FT8 mode and the isn't anything that shows audio level for that in the program.
Shutting down and restarting only DAX changes nothing.
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Double check the Low and High cut settings s/b 0-40000
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Do you have DAX turned on as an audio source on SmartSDR.
Have a look at page 127 and see if you missed anything.
http://www.flexradio.com/downloads/smartsdr-software-user-guide-pdf/
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I've had the same thing happen to me twice in the past 2 weeks. Each time the problem is fixed by shutting down DAX and restarting it. Just closing SSDR and restarting does not help. I had to close the DAX panel and restart it. This happened while I was using WSJT-X for FT8
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In my estimation DAX is the weak link in the SSDR ecosystem. I do a lot of digital work and I must have to restart DAX at least 3 times a day.0
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Hi Bob
Yes, this is a known problem. I do have to do that every once in a while. We have logged it as a bug.
Mike
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Since the later releases of V1 and now V2 ,I have removed both DAX and CAT from the computer start- up menu. Now I use this procedure: Boot up the computer and let it stabilize. Then start DAX followed by CAT and make sure they are running. Then start SSDR. Since using this procedure I have had no DAX , CAT failures or disconnects. This works for me on both laptop computers. DAX and CAT must be removed from start-up for each new release of SSDR. Might be something to try. John, W8AGS2
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Start everything up this morning and now it works as it should. Nice full power signal.
????
Don't you just LOVE computerized interfaces.0 -
Yea, there are days I long for my HQ 110 and Johnson Viking II. :-)
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