Gerard's Ajax A25

275
Item nr.

Ajax A25 Radiotelephone

Transceiver for small ships

**Data for Ajax A25**
Production	England, 1976.
Bands	LW (180-400), MW (550-1600 kHz), SW (1600-4000kHz).
Tubes	PL508 (Osc.), 1625 (Power).
Semi- conductors	About 18 to 20 transistors.
Cabinet	Steel. Size 41x24x29 cm.
Power	12 Volt DC.

The Design

Combined unit for sending and receiving. The receiver operates continuously between 160 and 4000 kHz, but sending is only possible at one of the nine frequencies for which a crystal is provided. See this separate article.

Obtained	3/2006 from NVHR Swap meet.
Condition	7.
Disposed	Sold 10/2006.
Sound sample	PLAY SOUND This is WP, WP, WP, the navigation beacon at Schiphol airport, transmitting at 376kHz. If you would have the optional DirectionFinder, a directional antenna, you could position yourself on a map of the sea by making a measurement on two of these beacons.

This Object

I haven't tried the transmitter. The receiver works, but isn't sensitive enough, and the BFO doesn't work.

Part of Gerard's Radio Corner.
Generated by SiteBuilder on 6/9/2025 by Gerard