A utility NDB transmitter, intended for installation where lower powers are both sufficient and desirable, such as for NDB locators at airports or at offshore platforms. TS-20B is conveniently compact - just 60 cm high and weight just 20 kg, it may easily be placed in telecommunication/radio rooms or in un attended equipment buildings, yet its design and circuitry fulfill all ICAO specifications and permits a full range of options. TS-20B operates on 190 to 1250 kHz, RF power output is 100 WPEP (25 W carrier). Remote operation (OFF-ON) and remote monitoring by optional Remote Control Panels.

The equipment is provided with EPROM for programming any callsign or keying sequence, and a timer circuit for automatic switching  the Transmitter OFF or ON of at specific intervals.