Newsletter Sign-Up
     Midian Electronics Logo

In-house Paging Using KSU Phone System

In-house Paging Using KSU Phone System: TRA-KSU

To Order Call:
1-800-MIDIANS (643-4267) or 520-884-7981


Midian's TRA-KSU provides telephone voltages and ring voltages to simulate a telephone line. The TRA uses VOX operation for asserting the PTT of simplex two-way radios or remote controllers. Other features include connect/disconnect ANI's, channel scanning, and multiple decode numbers for individual or group call. Duplex operation is possible when using a duplex mobile radio.


  • 10 number memory dial
  • Busy channel lockout
  • Connect & disconnect ANI's
  • Extends your telephone line to remote locations using 2 duplex radios
  • Makes rural telephone applications simple & inexpensive
  • Programmable time-out timer
  • Simplex or duplex operation
  • VOX operation
  • Works with most DTMF interconnects
  • 3 year warranty


The TRA-KSU can be used as a phone line extender for areas without phone line access. It can also be used with a KSU phone system to control a base station or a tone/DC remote or to provide in-plant paging of two-tone, five-tone, or DTMF.


Midian's TRA-KSU is easily interfaced to many full-duplex or simplex mobile radios and KSU phone systems. The TRA works with most DTMF interconnects including Midian's DTI and STI series interconnects.

Case Studies

TRA-KSU Case Study

Product Manuals

TRA-KSU Product Manual