Who when why,
There is no requirement in the JAA sylabus for actual use of 121.5 during training. If one was to try that then every other JAA country except the UK would object.
The difference in coverage between the UHF and the VHF systems shows that one system has had more investment and comittment to providing the maximum possible coverage than the other.
Questions -
If D+D are dealing with UHF emergency traffic, are extra staff brought in to retain the coverage of 121.50 to the same extent as prior to the emergency call or seat alarm on 243?
Not unusual for an aircraft captain monitoring 121.50 to request that pilots stop transmitting on guard (if it is not emergenct traffic). What would D+D do if pilots monitoring 121.50 told D+D or the aircraft practising to stop transmitting non esstential transmissions on 121.50?
The CAA and D+D encourage pilots to use 121.50 for to Quote OIC D+D "We encourage training because it enables us to practice our procedures".
Does the Coast Guard operate training on the Marine Guard frequencies?
Regards,
DFC