1. Cossor Radios
Single and Multi Channel Radios enable voice comms to/from ATC to aircraft

2. UK FRR 619 & 620 Single Channel Rx United Kingdom Fixed Radio Receiver
619 – VHF Receiver
620 – UHF Receiver

3. UKFRT 621 & 622 Single Channel Tx
United Kingdom Fixed Radio Transmitter
621 – VHF (117 – 137 MHz) low power 20 Watts
622 – UHF (225 – 400 MHz) low power 20 Watts

4. UKFRT 623 & 624
Single Channel Transmitters with 100 Watt Amplifiers attached.
Improves range to approx 60 miles

5. Single Channel Disadvantages
Time consuming to set up
Transmitter subject to valve aging
Restricted to one frequency
Prone to tripping

6. Air Defence Radar sites
Cossor Multi-Channel
Where is it located?
Airfields
Air Defence Radar sites
(including Convoys)

7. Equipment Frequency Range Freq:-
MHz (VHF) or
MHz (UHF)

8. Equipment Power Power O/P Amplitude modulation
UHF 20 Watts or 100 Watts
VHF 20 Watts only
Amplitude modulation

9. The equipment can be operated locally
By the use of a plug in hand held mic. for TX.
By the use of earphone headset for RX.

10. The TX & RX equipment can be operated remotely.
By the use of BT lines for Audio.
By the use of BT lines and or Data link for frequency selection.

11. Equipment Configuration
Stand alone TXER, local or remote operation for both audio and frequency change data.
Stand alone RXER , local or remote operation for both audio and frequency change data.
Transeiver (TX/RX integrated system) local or remote operation. For both audio and frequency change data.