The Hickman courier. [volume] (Hickman, Ky.) 1859-current, 1922-11-30
THE HOME RADIO
Ill.,, 30 M.Ls and J.ak ec>o BY A. HYATT
~ b
XIV. USEFUL THINGS TO REMEMBER
BY A. HYATT VERRILL
re and Use II 90

adding anything to the efficiency OF
set
That variable gridIeak can be
made with pencil marks on paper
and may be altered by erasing or add
Ing lines.
That some tubes are best for de-
tectors. others for auplification 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 10 a wafer. gas or similar
pipe or To a large copper plate buried
In the ground.
That the steel girder or frame Of
building makes good ground.
That sending or transmitting sets
must have license To comply with
the law.
That the IRE departments have spe-
cial regulations regarding rhc insta.Ia-
tlon Of aeriais.
That an aerial cannot be placed
asroSs a street without permission
That aeriaIs de- not atrract light
ming and If provided with a gap or
lightning switch are perfectly safe
That the best in the way Of ma
teriaIS is always cheapest In the end
That when using a sending set the
low voltage should be turned 0n first
or 80 tubc may be ruined.
That in sending set the battery
should always Dee turned Of from the
phone circuit when not In use.
That q sending SET L. always better
With a couRterUol-e than with
ground.
That IL does not pay 10 try to-rnake
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 "a set may act very differently
on different days or under different
conditions.
Tint you should not condemn your
Instruments until you are sure the
fault is not ia yourself.
That loose connections poor inSul6-
tion. poor ground, poor joints in wires.
worn Insulation. wires crossing and
many other small matters may put
set completely out Of business.
That you can seldom improve upon
ready-made set by adding anything
TO II, but can do better by building
new set
That every accessory or piece Of ap-
/ 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 expeu we sets are
not always the best, as oftentimes
| finish. cabinets and elaborate fittings
I add 10 cost without increasing efHci-
| ency.
That while a receiving set may ne
made 10 60 inside a safety match box
such things are merely toys and are
not for household use.
| That when a dealer advertises TINT
cheap set can receive signals from
/ a certain distance, be sure To find out
II 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.
| That anyone with the least me
I chanical ability can build wireless
| telephone sets If they purchase the
parts which require special knowledge
| 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 II becomes weak
| or your set will not work.
That the vacuum-tube is one Of the
most delicate devices ever invented
and should he treated accordingly.
That no license Is required for re-
| ceiving sets and the air is free to all
who want to listsn-in.
That all broadcasting stations pub
Iish their daily programs.
That the worst iDterferences are the
| nearby sending stations. SO don't add
| TO others troubles by sending unless
Won have good reasons or are sincere
| in your experiments.