Bob K
I'm using an OS2, v30 with two TYT380's.
I'm getting irregular jittering on incoming calls, including my parrots. I have tried using autocal with both radios. The results are erratic. Sometimes 0, sometimes 300, sometimes 400 - perhaps due to the radio warming. Doesn't seem to make any difference as far as helping the problem.
Most incoming calls show 0% B rates on the call log on the status screen. My calls are 0.5 to 4%.
On most incoming calls, the dejitter graph is very high, 10-15, and looks like a series of small spikes above the top line of the graph. The BER is essentially flat.
On my transmissions, the BER graph starts out with a spike - probably the transmit-ok tone - then has a series of short lumps, usually staying below the bottom line of the graph. The dejitter graph also stays high, well above 10, but the "spikes" are much more ragged and reach down to the third line at the top of the graph.
I tried changing the dejitter queue length from 500 to 1000, with no apparent effect.
I should note that the jitter problem does not occur when going through repeaters.
I tried switching between high and low power on the radio, but that seemed to have no effect.
The OS2 is about 8 feet from the router, and the radio is about 10 feet from the OS2.
But here's something that did have an effect. The unit had been running for a few hours. While I was out for a meal, I unplugged it. When I got back a few minutes ago, I plugged it in - and the error rate is much lower, and the spike at the start of a transmission is gone. Is there a connection? It's in a well ventilated area with plenty of room around it, and felt cool when I unplugged it.
All things considered, the problem seems to be related to transmitting from my radios. Receiving seems to be OK. Could the autocal be the problem?
Any suggestions?
Thanks, Bob
Bob K
Power is 100%.
Results of test to 9999:
Dejitter queue - the curve makes a fairly smooth rise to the top of the graph, staying flat at the top of the graph. The queue count stays flat at 199. Then a fairly smooth decline to zero. (I tried it two more times - it reached 203 on one of the tests.) The playback audio was almost clean except for one slight jitter. There are zero segnum errors.
BER graph - small "fry" across the bottom of the graph, well below the lowest calibration line, while recording. Flat while playing back. The status window shows 0.3-0.4%.
Results of test to 9990 (BrandMeister parrot):
Dejitter queue - The curve makes a steep rise to the top of the graph, then makes a zig-zag pattern between the top of the graph and the second calibration line from the top. Then a steep drop to zero. Length of queue stays around 20-23. (Queue length is now set at 1000.) A couple of slight jitters detected on playback.
BER graph - as with 9990 test, small hash - close to bottom line - during transmission, flat during receive. Status screen reports error rate of 0.1-0.4%. One brief dropout in playback.
I'll leave the OS2 on until I leave for work, in about an hour and a half, then repeat the tests.
Bob