Polycon (helicopter crew) radio frequencies

[Brunlea]

Polycon on-board communications (Helicopter crews):

417.50000 - NFM
417.52500 - NFM
417.57500 - NFM
419.11250 - NFM
419.13750 - NFM
419.18750 - NFM
419.58750 - NFM
449.53750 - NFM
449.68750 - NFM
449.73750 - NFM

These are analogue and are still in use by a variety of helicopter crews.

 

[Brunlea]

Some of the newer Polycon systems are digital (like Bluetooth) and can't be monitored on a scanner.

 

[Brunlea]

An example of Polycon in use:

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[Brunlea]

Some information on what Polycon is:

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