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Post by Deleted on Oct 7, 2017 19:42:06 GMT
Don't Put That There
Radio stations are not the worst environments for interferences among equipment and humans... television stations were even harder to tame during the days when human engineers sat within several feet of an entire wall of cathode ray tubes (CRTs) soaking in X-radiation until their dental work fell apart and colon cancers broke out. The engineers of the time knew about it but had no other careers by which to support their families.
Full power radio studios tended to be less hazardous except for transmitter engineers exposed to high RF fields.
No such scares exist for the low power radio hobbyist but equipment placement can still pose problems.
Antennas located too close to certain equipment can result in RF buzz getting into audio, to name a common occurrence.
Air monitors (tuners / radios) can reproduce lots of hash from nearby power supplies, computers and computer monitors.
Human operators in the near-field of receiving and transmitting antennas often cause noisy multi-path which exhibits itself by de-tuned radios and loud racket sent by devils hiding in the walls.
Religious radio stations I have worked for use prayer to address technical problems and when it fails to work they are confident that it's because of God's will.
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Post by Deleted on Oct 7, 2017 20:09:54 GMT
I've always been interested in RF safety (primarily because I value my life).
Part 15 compliant stations certainly do not have to worry about that (other than to perhaps not touch an FM antenna for too long).
But it's a very real issue for LPFM's and dare I say it, pirates. For example, an RF safety calculator indicated that at a frequency of 100 Mz, dipole antenna and 25 watts at the antenna, you would need to be slightly over 6 1/2 feet from your antenna to be compliant with safety requirements.
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Post by mark on Oct 7, 2017 23:26:56 GMT
Since we are dealing with, as in the example of the MS-100 at the most less than 1mW into a telescoping antenna, we are safe. On the CN Tower in Toronto dozens of 30K to 50K watt stations are transmitting from there and the public observation deck is just below where the transmitters are and yet no one seems to be hurt by this. So some of those Chinese transmitters could be bad for you if you have the antenna in the room with you!
Mark
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