"Hacking" the "old" analogue heli telly transmissions is relatively easy as they are not ( usually ) encrypted,
if you have a receiver that covers the frequency.... and such equipment does not appear to be listed at the Maplins on line store
It has been rumoured however that some TV news stations acquired equipment, and monitored Heli Telly broadcasts in the past, much in the way that Police VHF and UHF radio broadcasts could be monitored,
prior to the introduction of the Tetra radio system.
Nothing wrong with that as long as no action was taken in response to any information that was heard / seen.
The analogue frequencies are being sold off to the commercial sector, and the Home Office have allocated new frequencies for a digital Heli Telly system.
Police force air units will gradually change over to the digital system.
At present both Analogue and Digital systems are in use.
Information is freely available ( google ) that the new digital system will use much higher frequencies.
Apart from being digital, transmissions will also be encrypted, making it very unlikely that anyone without the correct encryption keys would be able to "hack" into the system and receive anything useful.
