Modify a TYT-9000D for Allstar
TYT-9000D Mod *** Proceed at your own risk ***
Building a Simplex node/Repeater from 1 or two TYT 9000D transceivers
this should work the same for the 220 and 440 models, I assume the 144Mhz as well.
I installed a 9 pin DE-9 on the rear of the radio, existing cut out, and threaded holes.
You can use whatever pin out you want, I chose to make it the same as a Arcom RC-210 controller
port, as I already had a cable made to connect RC-210 to my URI.
Using Digikey P/N A100196-ND
Cable Assy Mini CT 6POS
Mfg Part # 2058943-5
Original source for above mod: https://hamvoip.org/TYT_mod.pdf – Note: I changed the color order as it appears to be incorrect on the original document.
If you are really lazy,
https://www.amazon.com/Converter-Adapter-TOOGOO-Female-Modular/dp/B01GO4K8QQ/ref=sr_1_fkmr0_4?ie=UTF8&qid=1486735882&sr=8-4-fkmr0&keywords=8pin+modular+to+9pin+serial is a cheap and very easy way to make a cable/adapter – use Ethernet between each.