[Lowfer] Report and Order

N6IO n6io at wasson.com
Thu Jul 9 20:40:27 EDT 2015


If I am reading the July 7th FCC WRC-07 Implementation Report and Order and
WRC-12 Order correctly, the 2200 meter band is officially allocated as a
new ham band.  Operation will not be allowed until the FCC adopts service
rules after reviewing comments on the previous NPRM.

This is very good news.  Interference potential at 2200 meters is higher
than at 630 meters, so it seems very likely the 630 m band will also be
approved.

I'm thinking that reply comments should focus on what these service rules
will be.  In the report the FCC again mentioned not allowing mobile
operations, but only fixed operations.  I don't see the benefit of not
allowing portable/mobile operations as long as a distance limit from
transmission lines is established.  So my comments will focus on how far a
transmitter must be (100 M) from these lines and why with 1W EIRP
interference is not possible at that distance.

The report also mentioned limiting antenna height, but since the power
limit is based on EIRP this makes no sense.  A short antenna can produce
the same radiated signal strength as a tall antenna if power is adjusted to
meet the 1W EIRP limit.

At 630 m the FCC has the option of allowing 5W EIRP - I think we should
encourage that.  At the higher power level it might be necessary to
increase the separation between antennas and transmission lines to 500 or
1000 meters to allow for an extra 7 db of isolation.

Is this how others read this Report and Order?

Craig - N6IO


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