Hello!
Ich have some big problems with my Motorola GP380 VHF Radio.
First of all: the radio works almost perfect. Very good RX an TX performance.
But I have a big problem with my squelch. When receiving a low signal at the edge of the squelch level, the squelch does not cut off acurate. This radio beginns to "rattle" (quelch on/off many times per second) at a certain point and when the signal gets lower the squelch cuts off as it should do.
My 2 other GP3xx radios cut off more precisely when receiving a signal at the edge of the squelch level. No rattle sound through the speaker.
For me it looks like the hysteresis of this radio ist not set correctly.
How can I adjust it?
I tried to fix it with the Professional Radio Tuner (R02.11.00) but I could not find an option for hysteresis.
Then I tried do adjust the "Auto Squelch Level". I turned down the softpot values but that did not really help. The squelch level was now lower but the rattle was still there when receiving signals at the edge of the squelch level.
Can you please help me? Is there any possibilty to adjust some kind of hysteresis? I was already at a Motorola Service but they did not even know how to handle the tuning-software!!!
Thanks!!!
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These are my tuning-parameters:
********** R A D I O S O F T P O T D A T A **********
Radio Serial No: XXXXXXXXXX Radio Model No: H25KDH9AN6
R E C E I V E P A R A M E T E R S
**** FRONT END FILTER ****
Softpot Range : 0-255
Frequency(MHz) Softpot Values
136.025000 28
142.025000 49
148.025000 76
154.825000 116
161.025000 158
167.025000 187
173.825000 217
**** AUTO SQUELCH 12.5KHz ****
Softpot Range : 1-63
Frequency(MHz) Softpot Values
136.025000 48
142.025000 48
148.025000 47
154.825000 47
161.025000 47
167.025000 46
173.825000 46
**** AUTO SQUELCH 20KHz ****
Softpot Range : 1-63
Frequency(MHz) Softpot Values
136.025000 40
142.025000 40
148.025000 40
154.825000 40
161.025000 39
167.025000 39
173.825000 39
**** AUTO SQUELCH 25KHz ****
Softpot Range : 1-63
Frequency(MHz) Softpot Values
136.025000 40
142.025000 40
148.025000 40
154.825000 40
161.025000 40
167.025000 40
173.825000 40
**** RATED VOLUME ****
Softpot Range : 0-255
Frequency(MHz) Softpot Values
154.825000 207
*********** RSSI THRESHOLDS **********
Softpot Range : 0-127
dBM Range(-) : 0-210
dBM (-) Softpot Values
90 57
100 45
110 33
T R A N S M I T P A R A M E T E R S
**** REFERENCE OSCILLATOR WARP ****
Softpot Range : 0-511
Frequency(MHz) Softpot Values
173.825000 262
**** TRANSMIT HIGH POWER ****
Softpot Range : 0-127
Frequency(MHz) Softpot Values
136.025000 78
142.025000 76
148.025000 78
154.825000 81
161.025000 80
167.025000 79
173.825000 80
**** TRANSMIT LOW POWER ****
Softpot Range : 0-127
Frequency(MHz) Softpot Values
136.025000 33
142.025000 34
148.025000 36
154.825000 38
161.025000 37
167.025000 35
173.825000 35
**** DAC SOFTPOTS (UNSUPPORTED) ****
**** MOBILE K & M SOFTPOTS (UNSUPPORTED) ****
**** MODULATION BALANCE ****
Softpot Range : 0-63
Frequency(MHz) Softpot Values
136.025000 41
142.025000 38
148.025000 34
154.825000 32
161.025000 30
167.025000 24
173.825000 23
**** VCO ATTENUATION 12.5 KHz ****
Softpot Range : 0-127
Frequency(MHz) Softpot Values
173.825000 94
**** VCO ATTENUATION 20 KHz ****
Softpot Range : 0-127
Frequency(MHz) Softpot Values
173.825000 80
**** VCO ATTENUATION 25 KHz ****
Softpot Range : 0-127
Frequency(MHz) Softpot Values
136.025000 93
142.025000 93
148.025000 93
154.825000 93
161.025000 93
167.025000 93
173.825000 93
**** DTMF SIGNALLING ****
Softpot Range : 0-31
Frequency(MHz) Softpot Values
136.025000 4
**** MDC1200 SIGNALLING UNSUPPORTED ****
**** PA BIAS ****
Softpot Range : 0-127
Power Level Softpot Values
High 53
Bias 2(Unsupported)
Bias 3(Unsupported)
Low 47
**** TRANSMIT PA VOLTAGE LIMIT UNSUPPORTED ****
**** SELECT 5 ****
Softpot Range : 0-31
Frequency(MHz) Softpot Values
173.825000 20
**** MPT 1327 SIGNALLING ****
Softpot Range : 0-31
Frequency(MHz) Softpot Values
154.825000 27
**** HIGH SPEED TRUNKING SIGNALLING UNSUPPORTED ****
**** BATTERY THRESHOLD UNSUPPORTED ****
Big problems with Motorola GP380 Squelch! Need Help!
Moderator: Queue Moderator
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RevolutionXLR
- Posts: 6
- Joined: Fri Dec 29, 2006 2:25 am
Big problems with Motorola GP380 Squelch! Need Help!
Last edited by RevolutionXLR on Fri Dec 29, 2006 2:17 pm, edited 1 time in total.
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RevolutionXLR
- Posts: 6
- Joined: Fri Dec 29, 2006 2:25 am