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Anytone AT-5888UV Sensitivity test

Discussion in 'Ham Equipment' started by archjeb, Jan 21, 2018.

  1. archjeb

    archjeb Member

    Joined:
    Jan 26, 2014
    Messages:
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    6
    Folks,

    I just put an Anytone 5888 on the bench to do a test and saw an interesting observation.

    I just tested UHF / 440 for 12dB SINAD, and I'm seeing around -117dBm. What is weird, is if I move the selected VFO over so my SINAD test is on the 'inactive' side (just monitoring side), I gain about -2dBM in sensitivity.

    In other words, my A side is tuned to 440 and B side is something else. The test set is generating signal at 440 and I move the VFO selector switch to the B side...my sensitivity goes up by ~-2dBM. When I select the A side again, I lose about 2dBM.

    Is this expected on this unit?



    Kind of weird behavior.

    I notice that no matter which side I select for 440, the behavior is the same (i.e. I tune 440 on the B side instead and A side to something else).

    I would expect that maybe the A side would be more sensitive because it appears to be wider band front end to allow for Airband receive....so I do see about ~1dBM greater sensitivity on that side.

    But this inactive side /monitor side gain seems weird...

    -J
     
    BBI likes this.

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