The Hope pioneer., 1922-11-09
By A. HYATT VERRluA
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+ adding anything to the efficiency Of
set.
That variable grid-leak eau be
made with pencil marks on paper
and may be altered by erasing or add
ing lines.
That some tubes are Dest for de-
tectors, others for ampliflcation and
others for transmitting or as oscil-
lators.
That it is often cheaper to buy
ready-made accessories than to make
them.
That all joints. In wires Except in
binding-posts) should be soldered.
That the ground connection should
be soldered to water, gas or similar
pipe or to large copper plate buried
in the ground.
That the steel girder or frame Of a
building makes a good ground.
That sending or transmitting sets
must have license to comply with
the law.
That the fire departments have spe-
cial regulations regarding the installa-
tion Of aerials.
That an aerial cannot be placed
across street without permission.
That aerials do not attract light.
ming and if provided with gap or
lightning switch are perfectly safe.
That the best in the way OF ma
terials Is always cheapest in the end.
That when using sending set the
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or the tube may be ruined.
That in sending set the battery
should always he turned off from the
phone circuit when not in use.
That sending set is always better
with a counterpoise than with a
ground.
That it does not pay to try to make
certain Instruments
That while wireless telephones are
so easily adjusted and simple a child
may use them, they are also very deli
cate affairs and are easily put out Of
adjustment or ruined by carelessness.
That you must not expect too much
for your money in ready-made or home
made sets.
That set may act very differently
ON different days or under different
conditions.
That you should not condemn your
instruments until you are sure the
fault is not in yourself.
That loose connections, poor insula-
tion, poor ground. poor joints in wires.
worn insulation, wires crossing and
many other small matters may put a
set completely out Of business
That you can seldom improve upon
ready-made set by adding anything
new set.
That every accessory or piece Of ap-
7 'paratus is made for specific purpose
and that you should consult the manu-
facturers or dealers as to the best for
your purpose before purchasing.
That the most expensive sets are
not always the best, as oftentimes
finish, cabinets and elaborate fittings
add to cost without increasing efiici.
ency.
That while receiving set may be
made to go inside safety match box
such things are merely toys and are
not for household use.
That when dealer advertises that
cheap set can receive signals from
certain distance, be sure to find out
If he means code signals from radio
telegraphic stations or sounds Of
voices, music, etc. No one can guaran-
tee how far set will receive as too
many outside factors influence this.
That like everything else each and
every maker claims his sets are the
best. Investigate several before buy.
ing. a.
That anyone with the least me
chanical ability can build wireless
telephone sets If they purchase the
skill or devices for making.
That the prices Of MOST sets do not
include batteries, tubes or phones.
That storage battery must be re-
charged as soon as it becomes weak
or your set will not work.
That the vacuum-tube is one Of the
most delicate devices ever invented
and should be treated accordingly.
That no license is required for re-
who want to listen-in.
That all broadcasting stations pub.
lish their daily programs.
That the worst interferences are the
nearby sending stations. So don't add
to others troubles by sending uaess
you have good reasons or are sincere
in your experiments.