Timing of Ref Power measurement

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  • Question
  • Updated 3 years ago
  • Answered
I too am having problems with the Power Foldback. My Flex 6500 is driving an ALS-600 linear amplifier. I have the TX Delay set for 20 ms (per ALS-600 to allow for the amplifier relay).

I have done quite abit of checks using Flexmeter to monitor the Fwd Pwr and Ref Pwr.  When operating with amplifier I have noticed some strange behavior of the Ref Pwr reported by SmartSDR.  Upon keying the Flex with the amplifier on using Tune, the Ref Pwr immediately jumps to a very high value then over a couple of seconds it sets down to a stable value.  At low Tune powers this behavior doesn't cause any Foldback. But when approaching 40W drive the Flex does a foldback.

The question seems to be; what is the relationship between Ref Pwr measurement and TX Delay?  Or is there some other explanation for the strange Ref Pwr behavior.   BTW, changing the TX Delay does not change the results.

I like the idea of power foldback and would like to be able operate with it in SmartSDR.
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Dave - WB5NHL

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Posted 3 years ago

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Tim - W4TME, Customer Experience Manager

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Official Response
This issue will be resolved in the next release of SmarSDR.