Communications Support Forums

WARNING: This will not work for firmware upgrading

I verified that the following works for programming mid power and high power Astro Spectra Plus Radios

High Power W4/5/7/9
No mods needed
Cable Pinout
DB9 (Computer) to DB25 Accessory Port on Radio
2 - RXD - 2
3 - TXD - 3
5 - GND - 18
7 - RTS - 4
8 - CTS - 17
All Jumpers are already in place on the interconnect - Unknown if same for W3
***THIS WILL NOT WORK ON MID POWER REMOTE MOUNT***

Mid Power Units
DB9 (Computer) to Radio Rear 15 Pin Connector
2 - RXD - 11
3 - TXD - 13
5 - GND - 8
7 - RTS - 15
8 - CTS - 1
If dashmounted don't forget to add your emerg. jumper (pin 2 t to 8) and your IGN wire (4) and if you want your speaker added in then Spkr Hi(6) and Spkr Lo(7)

Adding info for Mid Power Remote Mount Modification to Interconnect (HLN6344E)
Remove JU612
Install JU633, JU634, JU635
Jumper Bottom side of JU636 to Pin 17 on Acc. DB25 (this connects to JU627 which is not installed).
Schematic Attached.
Now you can use the high power programming cable.



Again I have tried firmware and it doesn't work for that but at least you can program away.