Callbuoy RH 19

is a transistorized portable radio for distress at sea with two-tone-alarm. It is built in a watertight plastic housing, capable of floating.
 
It works on 2182 KHz, the international frequency for distresses at sea. Every full and half hour this frequency must be kept free from traffic to hear even weak signals. Testing of the transmitter is only allowed when permitted by the authorities.
 
The two-tone-alarm effects that any traffic is stopped at once to listen to the SOS.

Frequency:

2182 KHz

Frequency:

2182 KHz

Frequency control:

Crystal

HF output / transmitted power:

5 W / 2 W

Modulation:

AM (?)

Two-tone-alarm:

1300 Hz / 2200 Hz

Sensitivity:

1 µV / 15 dB

Range:

80 Sea miles or 20.000 square sea miles

Antenna:

Teleskopic antenna 2 m

Counterpoise:

6 m wire with weight

Operation time:

80 hrs transmitting / receiving cycle 9 : 1

Measurments and weight:

460 x 115 x 100 mm; 3.4 Kg mit battery

Watertight:

up to 1.4 m water depth

Produced from:

1969