HP2 in a News Helicopter

[kayn1n32008]

A helicopter flying at or above 100 feet AGL is going to be above the local clutter and will receive a stronger signal from the system, not a weaker signal. Despite comments to the contrary. Your radio is getting interfered with. If this were simulcast system, it would be expected to receive multiple sites with intersymbol distortion, a problem for commercial radios and especially with the HP2 given the Uniden discriminator demodulator. If it is not simulcast system, then I would suspect interference from comm systems aboard. Most likely the transponders. If this is a P25 system you are monitoring, I would be concerned with doppler from the rotor blades.

Another problem might be adjacent channel systems that become an interferer above 100 feet AGL. The frequency coordinator study probably assumed local clutter will reduce costs channel interference.

I can assure you it isn't a lack of signal.

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Completely agree. He is likely being desensed from being in the air.


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[RFI-EMI-GUY]

Completely agree. He is likely being descended from being in the air.


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That could be painful.

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[kayn1n32008]

That could be painful.

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Lol auto corrected by a new phone. Has not learned my RF/LMR words yet[emoji12]


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[rwier]

" ... Radio Reference data base does not reflect simulcast ... "

https://www.radioreference.com/apps/db/?sid=7078

" ... This new Project 25 digital simulcast network, will replace the old legacy trunked system used by many public safety agencies in and around the Nashville Metro area. ... "

If this is the System referred to?