Transcrypt Transpeater II

[radionerd20]

Hello everyone.

I am a COMT, and my COML just handed down a Transcrypt Transpeater II (TR30-021) to me. It has all the necessary cables for the legacy BK radios and works great. I have looked high and low online and cannot find the manual or cable wiring schematic for this model. I reached out to EFJ, and they just got back to me saying they do not have any documentation for it either. Does anyone happen to know of someone or some place to find these documents? The manual I’m specifically looking for is manual 186-0021-02 according to what I found online. I would like to be able to make cables for other types of radios. I have found the manual for the Transpeater III here on RR forums, but that uses serial connectors compared to the DIN connectors on the II.

Thank you!

 

[n7maq-1]

Have you seen this page?

MX-300S/R or Scorpio

Transpeater II Connections

This is for a circa 1995 Transpeater II with a couple DIN connectors on it. It is made by Transcrypt, Model TR-30-021, Manual 186-0021-02.

You could probably connect a couple MX-300's to it for repeater operation. One has to isolate the DC on the speaker output. Motorola made a SP2703101 and SP2706401 in the late 70's to make a repeater out of a couple MX's. It didn't have any connectors on it other than those for the MX's. So, maybe this Transcrypt box is the same one.

The pinouts for the connectors on this box are as follows:

Vin=6-30 Volts @ <0.5mA
Rx IN : 2-10V p-p, 100 Ohms or 6.8K
Tx OUT: 5mV to 10V p-p 100 Ohms

DIN Connector
1-Ground
2-Level Set, paired with Pin 4
3-Power IN (+) 6-30 VDC
4-Level Set
5-Rx, Audio IN
6-Tx, Audio OUT
7- External PTT
8- connect to Pin 1 to hardwire Relay mode

Level Set Resistor determines level out to the transmit radio @ Pin 6
Ohms Level
330 5-15 mV
1K 15-50 mV
3.3K 50-150 mV
10K 150-500 mV
33K 500-1500 mV
100K 1.5-5.0 V
open 5.0-10.0 V

Hang Time set by P3-P4-P5-P6
1=right 0=left
0.25 sec 0001
0.50 sec 0010
0.75 sec 0011
1.00 0100
....etc
3.75 sec 1111

 

[radionerd20]

I did, I would really like the full manual though. I figured there’s some hope since the Transpeater III manual is still floating around. Thank you!

 

[n7maq-1]

I did, I would really like the full manual though. I figured there’s some hope since the Transpeater III manual is still floating around. Thank you!

I understand, it is always good to have the manufacturer's documentation.