I know my other radios have matched the external meter pretty well.
Heh, I don't know the answer to your question, but I have two external SWR bridges outside the rig and the Flex, just like the Orion before it, doesn't agree with either of them, and they don't agree with each other. So, for me, I just choose which one I'm going to believe and use that one! :-)
Regards, Al / NN4ZZ
al (at) nn4zz (dot) com
I can get it down to 1:1-1.2 on the loop's meter, and if I plug in my analyzer it reads about the same. The Flex always reads around 1.5.
I don't think it's a big deal, I just wanted to make sure it was okay.
So, if that is any hint of the accuracy of Flex metering, my guess is that all the Flex 6000 series equipment is very uncommonly accurate on receive and transmit measurements.
I find that the readings I get on average are lower than others using older analog equipment so, when I give someone a report of S9, they are pounding in as if it were yesterday's 10-20 dB over.
I upgraded from Flex-3000 to 6500 and one thing I miss on the 6500 that was on the 3000 is a digital readout of the SWR, output power and reflected power. However, I can get a numerical reading using the SWR Plotter 6K, so it is available internally.
What I have found on the Flex it is extremely sensitive to 50 ohm load. Using an antenna and plotting swr with mfj-analyzer going over 50 ohms just a little and the flex smartsdr SWR goes up really fast.
But bellow 50 to 45ohms or so it matched mfj and the software meter.
I was trying to adjust an antenna with just the Flex and it was giving me fits until I watched the OHM`s with the mfj-analyzer.
Lowest I could get to match was 1.4 on smart sdr and 1.0 on the mfj-analyzer but at 45 ohms.
About 1.3 or 1.4 in smart sdr was as low as it would go but analyzer would show lower.