The Richmond palladium and sun-telegram. [volume] (Richmond, Ind.) 1907-1939, 1922-07-11

The sensation of the radio industry
just at present Is the new super-re-
generative amplifier just announced
by Armstrong the inventor of the
Armstrong circuit which is used in so
many commercial receiving SETS
Through its use, Major Armstrong
states, "One vacuum tube is made to
do the work of three" This result is
accomplished by temporarily putting
far higher negative than positive
charge on the tube. The time in
which this is done is only for one
| twenty-thousandth of a second. but
with the enormously increased effic-
iency. a single tube gives the same re-
suits in amplification that have been
obtained with three. Wave lengths
under 200 meters also can be detected
with such amplification, making the
"novice's" telephone receiver also an
efficient receiver for amateurs. An
other advantage claimed for it is the
elimination of spark signals while list
entng to radiophone. A hook-up dia-
gram is published in the Radio World
Tor July 8. The polarities and the
carefully worked out values of the
different parts, are essential features
upon which the operation of the am
Wireless in Mining.
Much attention recently has been
given to the novel use of radio in
prospecting for ores of different kinds.
Some modern prospectors, instead of
pick and shovel, or in addition to
them, are carrying sets with which
they detect ores by measuring the
magnetic fields surrounding them.
A more easily understood method.
however, is the latest plan of working
in pairs, the field man carrying a re-
celv1ng set while his partner main
talns a transmitting set in the city
from which they work. News of
new field is sent to the field man, and
he is able to be on the ground soon
after discovery is announced and be-
fore the word has reached other pros
pectors.
Local Distance Work.
John Pegg, of Fountain City, has not
been discouraged by summer static as
is proved by large number of cards.
including many first district ones.
confirming his messages. Some of
the stations which he has worked re-
Gently are Waverly. N. Y; Windsor,
Ont, CLARK university, Worchester,
Mass.
Trenton , n. J., Bristol, Conn. and
on c. w. Mendoza, Ill, Rochester, N.
Y 1.-TWO stations), Huntington, w. Va,
and Asbury Park, N. ]. Other cards
too numerous to mention" from near
by stations also have been received
Pegg is using a four-wire L aerial
with a four-wire counter-poise, and
both counter-poise and ground on
spark.
Fred Clark has placed his entire
transmitting set in the basement and
| is using remote control An enclosed
Benwood gap completes his equip
ment, which is working in good shape.
He obtains three amperes on the aer-
ial with a thermo coupled meter.
Gerard Harrington, with two tubes.
has been having no trouble in raising
almost anyone he wants He sue
ceeded in working $50 miles recently.
and is doing much distance work in
spite of static.
To be on Job
Bud Schultz, who established
distance record with his Richmond
station when he was heard in Hawaii
last winter, expects to be on again
| soon in Washington, D. c., with four
| 5o-watt tubes. He is hoping to raise
! Richmond and make a message route
! through Richmond, making only one
| jump for the whole distance Many
metal-roof buildings in Washington
/ may prevent his getting through this
summer, distance work in summer in
I Washington being almost nothing, due
to absorption
| Maurice Druley is not operating
much. due to hot weather and conse-
quent interference, but expects to be
on again for long distance work as
usual in the fall.
Harold Cutler is temporarily out for
repairs, but will be on again soon, he
! hopes.
Kenneth Mott is another whose
/ sending set is suffering from summer
complaint.
Joseph Winder Is working Dayton
and other stations in spite of static,
although his activities have been cut
down.
| Lynn Amateurs
| Inactivity rules among most Of the
| amateurs of Lynn, only Gerald Beet
/ ly being heard occasionally. SWIM
ming, rather than listening to static
( is the most popular amusement at
present.
Winchester Wireless
Glen Davis has been more occupied
in tuning up a racing motor lately
4 than in tuning in radio set, but
USED 1T SINCE 1875