Band  1 VHF  Receiver.

Single frequency crystal controlled receiver.  3 stages of bandpass filtering with tuned trap on the input to reject large unwanted signals. Double balanced mixer.
Signal strength operated switching relay for control of remote equipment.
Supply required 12V to 15V DC (max)

Single tuned version shown. Also available with double tuned detector.
Frequency response typically 10Hz to 70kHz.

                                                                                        £48 inc UK post

Wide band FM point to poink link receiver.

Also available:

Band 1 FM transmitter  min 6 Watts output.  Power amplifier uses 20 Watt 28V device running at 20V.  Almost indestructible. Boxed in enclosure apx. 220 x 170 x 90mm

The transmitter is narrowband, but the drive uses a frequency synthesiser that can operate over 256 50kHz channels from 48.0 to 60.8MHz.  - 8 Way DIL switch.
Can be supplied with pre-emphasis or flat response

Requires 220 / 240V AC.    ( 110V option)                                 £185 inc UK post

Audio / mpx input:  Unbalanced.
RF out via SO239