Remote Control of Police Wireless Equipment
| DOI | 10.1177/0032258X4301600115 |
| Author | Edward G. Ingram |
| Published date | 01 January 1943 |
| Date | 01 January 1943 |
| Subject Matter | Article |
60
THE
POLICE
JOURNAL
In
conclusion,
it
may be asserted
that
although a specialised
knowledge is sometimes necessary in dealing with gems, the police
officer should, in general, be able to
sum
up fairly accurately the type of
jewellery with which he has to deal. He should bear in mind that fine
stones always have fine colours,
but
when too perfect they are usually
artificial. Diamonds and pearls comprise the jewellery most commonly
met with, and careful observation will soon enable the inexperienced
eye to distinguish the crude imitations now on the market from their
valuable counterparts.
Remote Control of Police Wireless
Equipment
WIT H the advent of very high frequency wireless for police
communications it is evident that a great many more forces will
be participating in these schemes than when only medium frequency
wireless was the order of the day, the idea being that each large city or
county shall have its own local system of wireless communication.
This
has been welcomed by police forces in general,
but
apart from the
present and, it is hoped, only temporary difficulty of obtaining suitable
equipment, one of the main considerations of any such scheme is the
trouble of finding the necessary staff to
run
it.
In
these days of war,
man-power is at a premium and anything that can be done to relieve
the pressure without affecting the efficiency should be thoroughly
investigated.
It
would appear that the question of providing a staff
for the manning and control of a wireless station has bothered quite a
few, and it would not be surprising to learn that some schemes have
been turned down or at least postponed because of this difficulty.
In
Aberdeen a system of control has been developed which does not
require any extra staff, and it is proposed to describe this system very
briefly in the hope that the information may be helpful to other forces
who may be considering the question.
It
will be better perhaps to
run
over the main types of V.H.F.
wireless schemes in use or proposed to enable those not fully acquainted
with them to weigh the advantages and disadvantages, for each type
has both.
The
first is the simplest of the three to be considered here
and
is a one-way system, i.e. Police Headquarters is equipped with a
transmitter, and the various mobile units are fitted with receivers only.
Messages can be sent from Headquarters to the mobile units,
but
there
is no indication that aparticular message has been correctly received
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