Mirroring issue with a Flex1500

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  • Updated 3 years ago
I recently purchased my 4th Flex 1500 (I switch rigs often...), this is the first time Ive purchased a preowned unit. I got a great deal on it as the seller said it had an issue with the pan adapter showing a mirror image (the pan adapter shows the same image on the left and right sides of the display, 180 degrees out of phase with each other). It sounded like an issue with the cable so I pulled the trigger and bought it. Well, its not a simple issue with the usb cable, so far ive tried multiple new and used cables,with and without ferrite beads and the issue remains and it makes the pan adapter pretty much useless. The weird thing is, this only occurs on the ham bands, when I switch to a swbc band, there is no mirror image... Ive tried every version of PowerSDR from 2.44 to 2.72, and KE9NS's version as well. All have the same issue. I'd like to resolve the issue myself if possible, Ive owned 3 other examples and have never experienced this before. Any help would be very much appreciated
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Chris - KC5IIE

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Posted 3 years ago

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Daphne g7ena

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Hi Chris,

I had a similar issue with my Flex 1500 although it was intermittent and the audio was affected. I did a "factory reset" and that sorted the problem.

73

Daphne G7ENA

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Chris - KC5IIE

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I will try that Daphne, thanks!
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Chris - KC5IIE

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I wish it could be so easy... But that didnt work, I feel that it is somehow tied to the bandpass transmit filters as it only affects the ham bands. The previous owner mentioned he had sent it in to
Flex to repair the issue, and apparently it was fixed for a short time, but then the problem returned.
Does Flex have a warranty period on repairs?
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John

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Although I cannot offer any help, I too have seen this behaviour on my flex 3000 few times. Changing bands too quickly, probably caused my problem, although its difficult to pin it down. Shutting down the software and then switching off the 3000 and then restarting again, cured my problem. I get a feeling that it might be either heat related or data flow issue.
Open a help line
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Tim - W4TME, Customer Experience Manager

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I presume the mirrored signal are images that are normal with a single conversion receiver. But I can't tell specifically without seeing a screenshot of it.

The radio has hardware image rejection that will provide about 40 dB of rejection.  The WBIR feature (wide band image rejection) can add another 60 dB.  For WBIR to work properly, the I and Q samples must be in sync coming from the radio.  On the1500, when WBIR is not working, it is due to a problem with the USB interface that connects the radio to the PC.  We have seen where new USB3 interfaces are more susceptible to this behavior that some of the older USB 1.1 and USB 2 interfaces. 

If the radio hardware is not providing the requisite 40 dB of image rejection, then WIBR will not work at all and will result in the mirrored spectrum.  In this case, it will need to be repaired by our service department.  If you want to pursue this course of action, open a HelpDesk support ticket and we'll get you an RMA number to send it in for repair.