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
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
