Curious me wanted to know the pinout of the plug on the back of my Hitec radios. Some time ago I made up a buddy cord for the Hitec Optic 6 and Hitec Laser 4. It took me a while to retrace those steps and find all the information used to make that cable. So here it is, this is how I made my Hitec buddy cord.
Below is an (ugly) ASCII drawing showing the pinout of the trainer cord connector on the Hitec transmitter. I found a much nicer version of this diagram on this page: Tx Trainer Connector Pinouts.
------- 1 ---- +V Switched
/ \
/ 3 \ 2 ---- PPM Out
/ 2 o 4 \
o o 3 ---- PPM In
| |
| 1o o o5 | 4 ---- +V
| 6 |
5 ---- High to Disable RF
\ /
\ 7 ___ / 6 ---- DSC
\ / \ /
------- 7 ---- GND/Shield
And coming right up… This is how I assembled the trainer cord. Two DIN connectors are required and a chunk of cable. The cable only works one way, one connector is therfore labeled master and the other student.
Student Master
1 ----------------- 1
2 ----------------- 3
3 ----------------- 2
4 ---+
5 ---+
7 ----------------- 7
Note: pins 4 and 5 bridged on student side
Some words of warning!
The information presented is provided “as is” without any guarantees or warranty. I will not be responsible for any damage or losses of any kind caused by the use or misuse of the information.