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What is this port on most motorola cm series radios?
 

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FFPM571

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Most? the majority of motorola radios have them now ALL CM's have that Its an accessory port
 

kayn1n32008

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It is a 16 pin accessory connector. Some of the pins are mic audio, speaker audio, ground, PTT, internal speaker. Depending on the radio, some pins can be modified in CPS. Check over at Batlabs for more info
 
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radionerd13669

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its a 16 pin accessory connector. It can do different functions, it depends on whats pins are being used and what they want to do with
 

viet5d

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It is a 16 pin accessory connector. Some of the pins are mic audio, speaker audio, ground, PTT, internal speaker. Depending on the radio, some pins can be modified in CPS. Check over at Batlabs for more info

Do you have the spec. document for each pin out of Motorola XTL2500 ? Thanks
 

kayn1n32008

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Nope I do not have or use any of the XTL line of radios
 

fineshot1

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Do you have the spec. document for each pin out of Motorola XTL2500 ? Thanks

The accessory connector on the XTL2500 does not look like the one in the pic above
but here is the XTL2500 Pinout.

XTL mobile rear connector:

1 Ground
2 Bus + part of SB9600 bus
3 Bus - part of SB9600 bus
4 DCE_TXD RS432 transmitt data
5 DCE_RXD RS432 receive data
6 USB- data
7 USB+ data
8 Reset part of SB9600 bus
9 Busy part of SB9600 bus
10 DCE_RTS RS432 request to send
11 DCE_CTS RS432 clear to send
12 USB PWR 5 volts aoolied by USB host
13 CHAN ACT channel activity
14 Ground
15 EMERGENCY must be connected to ground to disable
16 AUX_PTT
17 ONE WIRE used for smart accessory cables
18 VIP OUT 1
19 VIP OUT 2
20 SPKR+ (do not ground)
21 RX FLT AUDIO fixed RX audio (squelched) 100 mv per 1KHz deviation
22 MONITOR used to detect when mic is off hook
23 AUX MIC
24 SW B+
25 Ignition
26 SPKR- (do not ground)
 
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