XTL1500 to CM300 Crossband Cable
Posted: Wed Apr 27, 2016 9:26 pm
I've been asked to link two base radios to allow the receive on a XTL1500 to be transmitted on a CM300 (crossbanding one way only).
Here's where I'm at with a design using the accessory ports on both radios:
XTL1500 Pin 1 Ground to CM300 Pin 7 Ground
XTL1500 Pin 21 Receive Filtered Audio Out to CM300 Pin 2 External Mic Audio
XTL1500 Pin 13 Channel Activity to CM300 Pin 3 External Mic PTT
- Should I use Pin 2 or Pin 5 for Audio input on the CM300? Assume Pin 2 as only voice audio range is needed, but I'm uncertain about different input levels shown in the manual.
- Is it the Channel Activity pin from XTL1500 that should key up the PTT on CM300?
Surely this is very basic for many of you who build accessory cables regularly... I'd like your help to get this right the first time! Thanks!
Here's where I'm at with a design using the accessory ports on both radios:
XTL1500 Pin 1 Ground to CM300 Pin 7 Ground
XTL1500 Pin 21 Receive Filtered Audio Out to CM300 Pin 2 External Mic Audio
XTL1500 Pin 13 Channel Activity to CM300 Pin 3 External Mic PTT
- Should I use Pin 2 or Pin 5 for Audio input on the CM300? Assume Pin 2 as only voice audio range is needed, but I'm uncertain about different input levels shown in the manual.
- Is it the Channel Activity pin from XTL1500 that should key up the PTT on CM300?
Surely this is very basic for many of you who build accessory cables regularly... I'd like your help to get this right the first time! Thanks!