G.F. 323
0003230
CONFIDENTIAL
機密
- 6 -
electrical characteristics are fully compatible
with those of Television Broadcasts Limited's
existing transmitters as well as those of
Services II, IV and V.
(b) Equivalent input conditions shall be
provided at the combiner for the transmitters
of service VI.
(3) (a) Aerial arrays shall be designed and
constructed so as to ensure that they will
withstand wind of speeds up to 200 miles per hour.
(b) where an existing structure is utilized for
mounting the aerials the maximum permissable
loading of the structure shall not be exceeded.
(c) Aerials shall be designed so as to ensure
that the minimum fluctuations in signal strength
are produced by deflection under wind loading
conditions.
(4) (a)
The aerials, combiners, feeder cables and
other associated items of communal aerial
equipment shall be designed so as to ensure
that they are able to handle continuously the
total maximum output powers of all transmitters
to which they are connected or intended to be
connected.
(b) All air-spaced feeders shall be suitably
pressurized.
CONFIDENTIAL **