<http://www.verticalmag.com/control/news/templates/?a=11979>

Dear Boston Medflight - your helicopters transmit on 465.80 - your
repeaters transmit on 460.80 - if you could work this over in your
mind a couple of times, it might be very useful.

Here are a couple of questions to help you tackle this material.

1. When a helicopter transmits on 465.80, do they activate all 3
repeaters at the same time? Why not?

2. When your units transmit on "direct" (maybe Channel 16), what
repeaters do they activate? Warning - trick question!

3. How does your dispatcher hear the units on "direct"?

4. New Hampshire apparently has a common LZ freq. Does Massachusetts?

Hint 1 - PL / DPL systems utilize "encoders" and "decoders".

Hint 2 - 460.80 >>> 460.80 >>> 460.80 >>> 460.80 >>> 460.80 >>> 460.80
>>> 460.80 >>> 460.80 etc etc ie ie etc ad infinitum

Hint 3 - Please see Hint 2

Hint 4 - New Hampshire, where's that?

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