The Carbon County news. [volume] (Red Lodge, Mont.) 1924-1931, 1928-08-23
BY r. M. sHERRlLL, Radio Engineer
copyright 1927. Bonnet Brown Corp)
Two Tube Radiophone
Makes Record

Successful two-way radio telephone
conversations have been accomplished
between amateurs in Paterson, y. j.,
and Porto Rico. Cuba, on wave
length of 20 meters.
The New Jersey transnitter used
only two type 210 power amplifier re-
eeiving tubes. George T. Gaede, of
Paterson, owner of station 2BG, was
enthusiastic over his accomplishments,
laying stress on the possibilities of
using 10 meters for phone work.
Shortly after his transmitter was
put into operation, Gaede said he had
no trouble in getting 9EJS and 9GSR
at Denver. Conversations with the
westerners was continued for an hour
and half. The next day after max
ing further adjustments, the amateur
spoke with a dozen or so midwest
stations, each one reporting good re-
ception.
After that Gaede raised and worked
NP4SA at Porto Rico and 5LH at
Denison, Tex, by calling and stand
ing by. asa told him that it was his
first United States two-way contact
ON phone.
Gaede said his transmitter was easy
to construct, costing between 60 and
$40 for the parts.
Noiseless Broadcasting at KFI
Even the slightest cracking of pa
per held by speakers before the mi
crophone has been eliminated in the
studio of XII, at Los Angeles. The
papers are pasted ON eardboards and
each sheet handled without the crack
ling that has been found to interfere
with proper broadcasting.
Florida and California Have
Rival in Greenland
Florida and California had better
start in afresh in extolling the vir-
tues of their respective localities, or
else Greenland will slip one over on
them. For Greenland admits that it |
is radio listeners paradise
According to Hugo Holton- Moller,
radio engineer in charge of station
0GG at Godhaven, Greenland, that
country's climate is ideal for radio.
In letter to the Westinghouse COM
pany, he says. There's no weakling of
signals in Godhaven, no fading or dis
turbance, and the northern lights
have no effect on radio reception,
whatever
Such statement will have a pow
erful influence with radio bugs.
Bureau of Standards swamped
by Radio Tests
With increased demand for testing
radio transmitting apparatus and
other urgent work. the bureau Of
standards has been compelled to dis
continue measurements on standard
frequency broadcasting stations. {
For several years the bureau meas
ured the waves of limited number
of stations, announcing a monthly list /
of those found to hold to their fire. i
Quencies accurately. c
Radio experts at the bureau will
give special attention to testing de- /
vices used to control the frequency t
of transmitters. By order of the k
federal radio commission, broadcast
stations are required to maintain their q
frequency within 500 cycles of their i
assigned value. The only satisfactory I
devices now available for maintaining f
the accuracy of this adjustment are 5
piezo-oscillator and automatic piezo
control, engineers at the bureau de- !
clare. 5
Piezo oscillators will be tested by
the bureau upon written request of
the owners or operators of the sta
tons in which they are to be used.
Demands for these tests at present
are greatly in excess Of the capacity |
of the bureau for immediate service, ;
and it has been necessary to schedule
pending tests.
English Have Automatic S. o. S.
More than 200 vessels in the British !
mercantile marine have been equipped ,
with apparatus for automatically re-
ceiving and announcing S. O. S. calls.
Advertising pays in The News.