3 speed Auto or a HiPo 6 speed manual
jambo said:
I have upgraded to the new 1.13.17 as well and found that I am having problems scanning and receiving the Astro digital systems (3600 Baud). On my Pro 96 I can scan this same system just fine, in fact, the Pro96 can scan this system anywhere in the valley flawlessly. Any ideas on why this is ?
Hi Jambo,
Before you give up, try this....
0. First, go into Program Systems and set this particular Apco25 system into MANUAL P25 decode.
1. Go back to scanning this system, and find a talk group that is fairly busy.
2. Hold this talk group
3. Activate the P25 decode adjustment screen
-FUNCTION KEY + Volume (Twice) for 396. FUNCTION KNOB + Light Knob (Press once) for 996.
4. Keep your eye on the ERR (short for Error) value. You'll notice that it will jump around a bit. The optimum value is 0.
5. Now, if you turn the Knob you will effectively change the decode rate of the unit. You'll see the ERR value either go up or go down. Focus on the ERR value.
-Alot can affect the ERR
a. Signal strength
b. Competing Noise
c. Antenna.....etc.....
Turn the Knob to the left and watch the ERR spike up, and then turn it the otherway and you'll get the same thing. From this you'll get a good idea of the center decode level. Settle on a 'Level' value and watch it for a minute or two, and repeat the adjusment to your satisfaction. Remember you want a low ERR.
6. Once your satisfied write down the chosen level for future reference.
7. finally, go back to the systems settings and set the P25 to Auto. With the unit set to Auto decode, it will continually adjust the decode rate in an attempt to bring the ERR
down to 0, but it will start at the level you set above. Which you've proven to yourself was already close to 0.
Side Note: In my observations, the scale should have centered at '0' (-8, -7, -6.....-1, 0, +1,......+6, +7, +8) for the default rate. Instead of incremental values from 0-16, with a default of '8' (going from memory here).
I found that for each P25 system, I had to manually optimize the P25 decode rate. I use to have a Pro96 too, and prefer the 396/996 overall. These adjustments provide much more user control.