T EVIS i - AmericanRadioHistory.Com
T EVIS i - AmericanRadioHistory.Com
T EVIS i - AmericanRadioHistory.Com
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e e e e to servicemen<br />
who really want to<br />
learn to use the<br />
OSCILLOSCOPE<br />
fully and accurately!<br />
A complete<br />
guide to using<br />
the handiest<br />
service instrument<br />
of all ...<br />
... On all kinds<br />
of jobs!...<br />
Written so you<br />
can really<br />
understand it<br />
MODERN OSCILLOSCOPES<br />
AND THEIR USES<br />
By JACOB H. RL'ITER, Jr.<br />
of Allen B. DuMont Laboratories, Inc.<br />
326 pages, .370 illustrations, $6.00<br />
Like most servicemen, you've probably<br />
read a lot about oscilloscopes -but<br />
still don't know how to use them as well<br />
as you'd like to.<br />
If so, here's the book you've been<br />
looking fort<br />
In MODERN OSCILLOSCOPES AND THEIR<br />
USES. Mr. Ruiter starts right at the beginning. He<br />
shows how oscilloscopes are designed and how they<br />
work. Then he explains exactly how, why and where<br />
to use them.<br />
No involved mathematics. No puzzling theoretical<br />
discussions. Instead, this world famous authority gets<br />
right down to earth in answering the questions that<br />
have probably kept you from taking full advantage of<br />
the nlnney- making service poibil it ii +in nscil,nscnpes.<br />
HOW TO HANDLE TOUGH JOBS<br />
EASIER AND FASTER<br />
From routine troubleshooting to handling<br />
the toughest realigning and adjusting<br />
jobs, each operation is carefully<br />
explained. These include determining<br />
where and how to use the oscilloscope;<br />
how to make connections; how to adjust<br />
circuit components, how to set the controls -AND,<br />
ABOVE ALL, HOW TO ANALYZE PATTERNS.<br />
Front dozens of pattern photos you see and learn to<br />
recognize patterns that are wrong, nearly right and<br />
exactly right!<br />
SAVE HUNDREDS OF DOLLARS<br />
IN AM -FM-TV SERVICE TIME!<br />
Busy servicemen have r1.1 u- 1...n<br />
the television service section of MOD-<br />
E RN OSCILLOSCOPES alone is worth<br />
the entire price of the book. Here you<br />
get exact procedures for aligning the 1 -F<br />
stages; aligning Y -F tuned circuits in<br />
the mixer stage; checking gain of the picture 1 -F stage<br />
by stage; troubleshooting the sweep circuits ... and<br />
dozens of other jabs. Similar big sections cover use of<br />
the oscilloscope in AM :rod FM radio servicing and<br />
other electronic uses.<br />
No other type of specific service training can mean<br />
so much ro you in terms of increasing your efficiency<br />
and earning power. Use coupon today!<br />
READ IT 10 DAYS at our risk!<br />
Dept. EN -43. RINEHART BOOKS. Inc.<br />
technical Division<br />
252 Madison Avenue. New York 16. New York<br />
Send MODERN OSCILLOSCOPES AND<br />
THEIR OSES'for 10-DAV FREE EXAMINA-<br />
TION. If book is satisfactory. I will then send you<br />
$6.00 promptly in full payment. If not. I will return<br />
hook postpaid in good condition and owe you<br />
nothing.<br />
Name<br />
Address<br />
City, Zone. State<br />
Employers Name and Address<br />
Price outside U.S.A. 56.50. cosh only. Money back<br />
if you return book within 10 days.<br />
138<br />
1118<br />
nas and an apparently bewildering<br />
combination of stacking and matching<br />
devices are now available for<br />
fringe area installations. To select the<br />
best antenna requires a full knowledge<br />
of the reception conditions at the<br />
customer's home. A test installation<br />
is often required to determine just<br />
what difficulties prevail and then,<br />
with a sound knowledge of the characteristics<br />
of various antenna types, the<br />
proper choice can be made. It is often<br />
said that "for each man there is a<br />
maid" and similarly, for each installation<br />
there is an antenna, the right<br />
one just has to be found.<br />
Spot Radio News.<br />
(Continued from page 18)<br />
to be used extensively by the new administration,<br />
during a recent news<br />
conference conducted by the President's<br />
news secretary, James C. Hagerty.<br />
Noting that we are in a day of<br />
a new medium, TV, Hagerty said that<br />
perhaps it might be possible to devise<br />
a system whereby the President could<br />
give monthly talks, or conduct press<br />
conferences via television once a<br />
month. No specific details on the<br />
plan were issued, but it was indicated<br />
that the networks are being consulted<br />
on the most practical methods that<br />
could be used.<br />
Prexys of the nets applauded the<br />
news that such a regular TV schedule<br />
from the White House might soon<br />
become a reality, and all indicated<br />
that they would be very willing to cooperate<br />
in working out the various arrangements.<br />
All Presidential telecasts would<br />
also be carried ria standard broadcast<br />
facilities, Hagerty also indicated,<br />
thus making it possible for over 100,-<br />
000,000 to see and hear the President.<br />
THE LONG -DELAYED all- important<br />
theater TV hearings finally received<br />
a go -ahead during the early part of<br />
the year, and engineering and accounting<br />
experts of motion picture<br />
interests, and radio and wire companies<br />
began offering testimony.<br />
Appearing on the stand were representatives<br />
from the National Exhibitors<br />
Theatre Television <strong>Com</strong>mittee<br />
and the Motion Picture Association of<br />
America, AT &T, RCA, Western Union,<br />
American Petroleum Institute, Theater<br />
Network Television, Theater Television<br />
Authority, Independent Telephone<br />
Association, Aeronautical<br />
Radio, American Trucking Association,<br />
and the American Civil Liberties<br />
Union.<br />
Briefs did not seem to impress the<br />
<strong>Com</strong>missioners too much, and some<br />
of the members bluntly asked if the<br />
hearings would serve any purpose.<br />
Three factors appeared to disturb the<br />
seven -man body; lack of a programming<br />
plan and cost data, and details<br />
on the number of hours that might be<br />
used. Many inconsistencies in testimony<br />
covering the classification of<br />
RADIO Surplus Buys<br />
CRYSTALS<br />
. in FT 241 -A Holders -64"<br />
PIn SPC. Marked 54th OR<br />
72nd Harmonic MC Freq.<br />
Listed below by fundamental<br />
frequency with fractions<br />
omitted.<br />
500 KC Crystals<br />
1000 KC Crystals<br />
200 KC Crystals<br />
$1.95<br />
$3.95<br />
370 407 444 476 509<br />
372 408 445 477 511<br />
374 409 446 479 512<br />
375 411 447 480 513<br />
376 412 448 481 51.1<br />
377 413 450 483 515<br />
379 414 451 484 516<br />
380 4,5 452 485 518<br />
381 416 453 486 519<br />
383 418 454 487 520<br />
384 419 455 488 522<br />
385 420 456 490 523<br />
386 422 457 49, 525<br />
387 423 458 492 526<br />
388 424 459 493 527<br />
390 425 461 494 529<br />
391 426 462 495 530<br />
392 427 463 496 531<br />
393 429 464 497 533<br />
394 430 465 498 534<br />
395 431 466 501 536<br />
396 433 468 502 537<br />
397 434 469 503 538<br />
398 435 470 504 540<br />
400 436 472 505<br />
403<br />
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$100<br />
404 441<br />
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406 443 IO for Sß.00, Po :paid<br />
FOLLOWING CRYSTALS AVAILABLE IN<br />
FT 243 HOLDERS '2" PIN SPACING<br />
3590 5035<br />
7350<br />
4165 5127.5<br />
7450<br />
4280 5285<br />
7750<br />
4335 5587<br />
7815<br />
4350 5660<br />
4370 5730<br />
4440 6073.3<br />
4445 6075<br />
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4620 6350<br />
4635 6525 $oo<br />
4710 6700<br />
EACH<br />
4880 6875<br />
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11 to. S10.00, Postpaid<br />
PLEASE ENCLOSE FULL AMOUNT WITH ORDER<br />
QUANTITIES AVAILABLE<br />
WRITE FOR YOUR REQUIREMENTS<br />
C<br />
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BOX 356-rE EAST PASADENA STA. PASADENA B, CALIF.<br />
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0 -2 Ma $3.95 0 -500 Ma $ 9.00<br />
Mfg'rs inquiries: lots over 100<br />
Voltmeter. 2" sq. -0 to 20 Volts $3.29<br />
DC Voltmeter. 2" sq. -0 to 300 Volts w /Est. resistance.<br />
<strong>Com</strong>plete $3.95 3 for $9.95<br />
RF Ampmeter. 2" sq. -0 to .5 Amp $3.95<br />
Ampmeter. 2" rd. -0 to 50 Amps. $3.29<br />
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3" Round Meters. DC. All New. 0 - 15, 0 - 30,<br />
0 - 300 Mills. $4.95 Each 3 for $11.95<br />
Milliampmeters. 21/2" rd. 0 -30 Mills. Each $3.95<br />
Milliompmeters. 2" rd. 0 -50 Ma. 0 to 5 Ma.<br />
movement. Each $3.29 3 for $9.00<br />
Thermocouple. 2" rd. 350 Milliamp. HF....$3.29<br />
"S" METER. Illuminated face. Full scale reading<br />
of 5 ma. A standard valve for most "S" Meter<br />
Circuits. 27/s". Black face. New $2.49<br />
Amp. Meter. No. 60 -0-60. New $1.29<br />
COMMAND AND /OR ARCS<br />
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3.6 MC Receiver Used *8.95 -New $17.95<br />
6 -9.1 Receiver Used 7.95 -New 1 95<br />
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4-5.3 MC Transmitter with tubes $ 8.95<br />
5.3 -7 MC Transmitter with tubes 7.9S<br />
7.9.1 MC Transmitter with tubes 9.9S $19.95<br />
3 -4 MC Transmitter with tubes 18.95<br />
Cash with order. California orders please include<br />
31/z% Soles Tax. Please include approximate<br />
postage - excess will be refunded. What<br />
hay. you in sae-<br />
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plus? Submit.<br />
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RADIO & TEL<strong>EVIS</strong>ION NEWS