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Radio News for November, 1928 457
the last program received was a musical number.
I do not remember the call letters, but the announcer
was very distinct in saying "located at
Bound Brook, New Jersey and broadcasting on a
frequency of 5,000 kilocycles." This was the only
time I ever had this experience but it shows that
it is possible for some supers at least to pick
up and reproduce short waves with good volume.
A. B. GARDNER,
511 Green St... Dowagiac, Michigan.
Editor, RADIO NEWS:
Re Baron v. IIoyningen- Heune's letter, are either
or both of his tuning coils reversed in the Ultra -
dyne? Reversing the primary coil lessens the
effectiveness of the set, of course, but makes it
very interesting to handle.
HOWARD T. BEATON,
Iroquois Falls, Ontario, Canada.
Editor, RADIO NEws:
During the winter of 1926, I picked up one of
KIJKA's short-wave broadcasts, on an ordinary
Pressley superhet. This was one of their Far
North programs, broadcast for Alaska and Northern
Canada, and came in on a dial setting that would
correspond to a wavelength of about 260 meters.
There was present the usual rapid fading, and
the announcement stated that the broadcast was
from KDKA's short -wave station, but I did not
get any statement as to which wavelength was
being used. I never did pick them up in this manner
again, and I think possibly the reason they
came in so strongly on this occasion was perhaps
due to their using the limit of their power. There
was nothing faint about their signals in this case:
they came in on the speaker with plenty of volume.
At present I am using a super built up from the
Silver -Marshall Lab. circuit. using their coils, but
having Scott World's Record intermediates. Using
the plug-in coils, I can get down to about 26
meters. I think I must have been one of the first
to pick up RF \I in this country. I got them sometime
last December, and played them regularly for
several weeks before I found out who they were.
I have been able to get KDKA on two wavelengths,
WGY the sane, but not a thing from
\\'RNY or WLW, though 1 am always trying.
Short waves may carry well with low power, but
there is no doubt that plenty of power helps a lot.
W. WALLACE CLENDENIN,
Culver City, Calif.
Editor, RADIO NEWS:
I have built several Ultradyne circuits. I found,
a few months ago, that by turning the condenser
tuning the antenna cod completely 'out, I could
tune in SUFI\ on their 62 -meter wave during
the afternoon with the oscillator condenser alone.
The tuning was very sharp, and there was rapid
fading, but it could be done day after day. Our
reception of KDKA is very uncertain on their
broadcast wavelength; I don't believe we average
anything like good reception on two nights a week,
in summer. But as long as I used an Ultradyne,
I could get their short -wave broadcasts in the
afternoon.
B. J. SANFORD, M.D.,
Clare, Michigan.
FOR SCOUTMASTERS AND SCOUTS
Editor, RADIO NEws:
Now that good radio weather is about to open
up, maybe some scoutmaster might start a radio
club that could work with the one I have started
here, and also have the real "kick" of talking to
some American Scout who is in a foreign country.
Personally, I think it would be about as fine a
training as any Scout could receive, and 1 would
be very glad to send my ideas or rather suggestions
to any scoutmaster who is willing to work.
I have had' some wonderful results from the different
radio manufacturers, and they have all
expressed a desire to help the good work along.
Also, a lot of other letters have been received; but
I have been too busy to take much time away from
business to answer any but the. ones from Scouts.
Will you return the enclosed letter (printed below)
to me, as I want to use it as an incentive for
my boys to keep on trying.
GEORGE O. HOWARD,
109 Tulsa Bldg., Tulsa, Oklahoma.
Dear Mr. Howard:
Having seen your letter in RADIO NEws, I would
like to write in commendation of your idea in
teaching radio to the Scouts and getting them interested.
I am a "harm" of three years experience
and certainly did not have the ease in starting
that the fellows in the States enjoy. At present.
after trying, and tedious, unsuccessful times with
long -wave sets, I have reverted to short waves and
can get plenty of good musical programs (barring
the fading) as well as code.
I also am a Scout, 16 years of age, and would
be glad if you could put me in touch with two or
three Scouts also interested in radio. It has been
pretty hard here to keep pounding the old brass
when nobody else is interested in that line; but
once in a while a brother "ham" has come along,
and we have a pretty good time. Don't get the
idea that I'm lonely, though; the fellows all have
a respect for the work I've done, and I have plenty
of pals. The only thing that I sure would like is
to have someone in the old country to talk things
over with -chew the rag, so to speak.
\\'ell, GB till the next mag comes in. I would
be glad to tell the fellows anything they want to
know. 73 to you.
EARL A. NOOSE, JR., .-IC 2 AJ,
American Bible Society, Pekin, China.
USE OF SHORT -WAVE ADAPTER
Editor, RADIO NEWS:
On June 19 I received a Submariner and attached
same to my Norde -Hauck Super 10, which has
four audio stages, with a power tube in the last.
The results were very gratifying. Each night I
get the programs of SSS wonderfully and on
Sundays also, from 10:00 a. m. to 9:00 p. m.,
Central standard time. 2 XAF comes in one week
daily and the next on Tuesday, Thursday and
Saturday.
Your program from 2XAL on July 31, from
7:30 to 7:50 p. m., containing your talk about
flying rockets and the orchestra numbers was
heard but with severe fading.
PCJJ, Holland, broadcasts every Tuesday front
7:00 to 8:15 p. m. and on Fridays I enjoy the
Spanish program from 7:45 to 9:00 p. ni. It
comes in exactly between 2X: \L and 2XAF; the
readings on the Submariner are 19, 1934 and 20.
ORESTES CENA,
Tuxpam, Vera Cruz, Mexico.
(Continued on page 493)
Station PCJJ, that of the Philips
company at Eindhoven, Holland
(transmitter at Hilversum), which
so many of our readers have
heard, is probably the most
powerful transmitter in the
world putting out short-wave
broadcasts. Its total power is
about 15 kilowatts in the aerial,
and it works now on 31.40 meters.
The illustrations which we
reproduce show the compactness
of this installation; at such high
frequencies, care must be taken
that leads do not introduce oscillatory
circuits, as regeneration
of 1 /20.000th of the power would
cause difficulty. This is minimized
by changes of the fre-
quecy. The piezo- electric control
crystal is contained in the
box at the left in the center
(uppermost) picture. It is
ground to a frequency corresponding
to a wavelength over
180 meters, and the unit puts
out 50 watts on Une second harmonic
of this. In the middle
section of the transmitter, shown
at the louver left, the frequency
is tripled and the output raised
to 3 kilowatts. At the right of
titis picture. and the left of the
third, is shown the 25 -kw. tube
which feeds the aerial -a single
bronze Loire. The remaining apparatus
of the louver right comprises
the modulators and their
cooling system.