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General discussion forum / TS-480SAT - Control head to 1258 or body doesn't work with COTS RJ12 cable?
« on: 2018-09-29, 09:08:17 »
Trying to connect a TS-480SAT control head to the RR-1258 using a standard RJ12 cable (all pins wired). It doesn't work.
To get to a baseline I set aside the 1258 and connected directly to the radio
- Used the stock Kenwood cable and it works (powers up, all functions are OK).
- Replaced it by a store bought RJ12 (1-to-1) cable and it never turns on.
- I bought two RJ12 cables so I tested using a second one ... same results
- Looked at the pins to compare and here is what I see:
Stock Kenwood cable (looking from the front, tab on top, left to right):
1. white, 2. black, 3. <nothing>, 4. red, 5. green, 6. yellow
No crossovers
Store-bought RJ12 cables (same view):
1. white, 2. black, 3. red, 4. green, 5. yellow, 6. blue
No crossovers
Is it possible that the connected #3 wire on the store bought RJ12 cable is causing the problem???
Service manual and other posts in this group show 6 wires and several posts mention than a standard RJ12 cable works. Not here (sigh)
Can it be that this older "2008" vintage TS-480SAT (S/N 00400107) only used 5 wires?
Just asking before I buy some RJ12 connectors (I have the tools but only RJ45 connectors LOL) and modify one of the store bought RJ12 cables
To get to a baseline I set aside the 1258 and connected directly to the radio
- Used the stock Kenwood cable and it works (powers up, all functions are OK).
- Replaced it by a store bought RJ12 (1-to-1) cable and it never turns on.
- I bought two RJ12 cables so I tested using a second one ... same results
- Looked at the pins to compare and here is what I see:
Stock Kenwood cable (looking from the front, tab on top, left to right):
1. white, 2. black, 3. <nothing>, 4. red, 5. green, 6. yellow
No crossovers
Store-bought RJ12 cables (same view):
1. white, 2. black, 3. red, 4. green, 5. yellow, 6. blue
No crossovers
Is it possible that the connected #3 wire on the store bought RJ12 cable is causing the problem???
Service manual and other posts in this group show 6 wires and several posts mention than a standard RJ12 cable works. Not here (sigh)
Can it be that this older "2008" vintage TS-480SAT (S/N 00400107) only used 5 wires?
Just asking before I buy some RJ12 connectors (I have the tools but only RJ45 connectors LOL) and modify one of the store bought RJ12 cables