The Wolf Point herald. (Wolf Point, Mont.) 1913-1940, 1922-09-07
THE HOME RADIO
How RI Male and lice II 90 ByA. HYATT vERRILL
~" ~ Aon oAAN Cpnhht HrpwA Brothers
XIV. USEFUL THINGS TO REMEMBER


That a crystal detector set is never
as efficient as a vacuum-tube set, III
matter what sort Of equipment vol
use.
That a crystal detector set cannot
be satisfactorily amplifed.
That most small or cheap sets can
not tune out local interferences.
That grid-leaks are not used Oh
crystal detector sets. but only on
vacuum-tube sets.
That a large t%uning-coil with wires
spaced closely will give better results
than a short coil or one with wires
far apart.
That q vario-condenser and . loose
coupler gives finer tuning.
That a vacuum-tube Is about thirty
dimes as efficient as a crystal detector.
That a a length has little to do
with the distance you can receive.
That 5000 ohm receivers will often
e1cellency.
That a l~oading-coil Is not needed
with a loose-coupler and variable-con-
denser.
That II two or more crystal sets are
used on n aerial only one can be
used at one time and a switch must
be provided to throw sets out and In.
That a loose-coupler Is better than
q t~uning-coil.
That a loose-coupler should be
placed between aerial and ground.
That money saved In buying cheap
head phones or receivers is really
thrown away and that a great deal
depends upon the phones.
That aerials and lead-ins should be
Shunted across head-set.
That In setting up an aerial n long
wire is better than many shorter ones.
That the lead-in counts and q long
isad-in Is an advantage.
That aer1als and lead-ins should DO
insulated from everything else
That aerials should be placed as
high AZ possible.
That when placing aerial near Gle,
waited structures, wires, bridges, or
steel buildings 1t should be placed at
right angles TO them and as fur away
- possible.
That 7 strand, phosphor-bronze wire
p the best for ~aerials. but ordinary
No. IA copper wire will do.
That continuous waves penetrate
everything.
That the lead-in from aerial should
be at end Of aerial which Is towards
the sending station you most often
wish to hear.
That aerial does not have to be
horizontal.
That for sending, a many-wire
aerial is far better than a single wire.
That a counterpoise Is better than
ground, particularly In sending.
That an indoor wire will serve for
an aerial, but is not so good.
That an Iron bedstead or springfield
will do for an aerial in case of neces-
sity.
That the simplest and cheapest
vacuum-tube receiving set is better
than the best crystal set.
That the best form Of receiving set
is the ~regenerative set.
That a vacuum-tube or regenerative
set may be ampliied to almost any
extent.
That an ordinary photograph horn
attached to a head telephone receiver
will increase the sounds somewhat
and will act as a loud speaker.
That a variable-condenser helps fine
tuning.
That the flament battery Of a
vacuum-tube set may be a dry bat
terry, but that 1t is more expensive
In the end thar a storage battery.
That the Ultra Audion circuit has
the plate circuit led back to the honey
comb-coil and amounts to a regenera-
tive set.
That the best type of vacuum-butb
receiving set is the regenerative with
amplifiers.
quires another tube.
That If there are too many turns
on the inductance they may be taken
Off to secure tuning.
That the distance you can receive
depends upon various climatic and
other conditions.
That the flament lighting does lot
always mean the set Is operating prom
srly.
That If f1lament rheostat is turned
On suddenly the filament may be
paralyzed and must be left to recuper
ate before it will glow.
That burning the hlament too bright
merely wastes the filament and
the life of the tube without