I know how you feel ,waiting is hard.
On my BC346XT and BCD996XT the port connector in question is a USB 2.0 mini B 5 type connector, female. I think yours is too. The communications port uses 3 wire EIA232 electrical specification. “Over the 40+ years since this standard was developed, the Electronic Industries Association published three modifications, the most recent being the EIA232F standard introduced in 1997” *. Besides changing the name from RS232 to EIA232, some signal lines were renamed and various new ones were defined, including a shield conductor.
Uniden did not use a typical way of connecting controller instrumentation. The physical connectors do not determine the communications protocols but there are generally industry wide accepted methods which Uniden has not complied with. The USB 2.0 mini B 5 type connector that Uniden chose to use was for convenience, low cost and small foot print. So it can be visually misleading. Most EIA232(RS232) connections are made with DB9 connectors and older types used DB25 connectors. On DB9 connectors Controller end tend to be male Pin 2 TXD Pin 3 RCX Pin 5 TRGrnd , Terminal End the same but TXD and RCX nomenclature reversed. When two hosts or controller/terminal configurations are connected together Pins 2 and Pins 3 are swapped and local control lines internally jumped – this is most often called a null modem connection. There is much confusion as to how to make connections so most equipment manufacturers publish specific cable wiring and handshake specifications. And or supply the cable itself.
The electronic technicians who will work on your radio will know full well what you are talking about.
Footnotes:
*
The RS232 Standard
DB9 Connectors
What is a DB9 Connector?
See Usb Connector chart
USB Connector Chart: Type A/B,Mini Type B4/5 Position Connectors,Popular,Hard to Find,L-com.com
See RS232C Null Modem Connection
RS232 serial null modem cable wiring and tutorial
SENIOR TEST ENGINEER
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