On 01/04/2024 13:38, The Incredible Bulk wrote:
The question is is a there a possibility of his transmissions
interfering and or damaging my station
Interference is possible, but very unlikely from the aerial you
describe. Damage is very unlikely, and would be the result of extremely
bad design.
Licence free radio equipment generally operates on the condition that it
must accept interference from other radio users, so there can be no
guarantee that it will operate reliably when any transmitter is being
used nearby.
Amateur operators are required to limit the power delivered to areas
outside their control to levels considered safe for humans who are
unaware of any risk. Humans are mainly sensitive to average powers,
whereas electronics are sensitive to peak powers, but a long wire (in
the sense you are using the term) aerial is unlikely to be used with
peak powers much greater than average powers, so only poorly designed
equipment should be at risk of damage. Any such equipment would
probably not survive a nearby thunderstorm.
Power levels that could be reasonably expected to cause damage would
cause damage to other electronics. In fact that might be more
vulnerable, if it isn't designed as part of a radio system.
The likely operating frequency is 433.92 MHz, which is a frequency on
which amateurs are also allowed to transmit, and sometimes licence free equipment uses very cheap receivers, which can be jammed from a wide
range of frequencies. However, amateurs use those frequencies either
with hand held, or vehicle based, equipment or with aerials which are
either vertical or look like TV aerials. I would hope that most
amateurs would stay clear of 433.92, so high quality receivers should be reasonably safe.
If it can be damaged by hand held equipment, you need to create a guard
zone around it in which mobile phones are banned.
Basically, you are more likely to suffer from the sort of temporary
problem that prevents car drivers using radio keys, than any permanent
defect, and even that is unlikely to arise from the aerial you describe.
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