T EVIS i - AmericanRadioHistory.Com

completely new system of closed control.
The interaction and combination
of these controls in a system as simple
as that indicated in "T mothy's"
original control circuitry hakes a
self -controlled electronic robot a distinct
possibility and an i itriguing
problem in cybernetics.
Acknowledgement is gratefully made
of the help of Edward Jac ;:ack and
Fred Tulley for their frequent consultations
on the mechanics devices
incorporated in "Timothy." --
RADIO CLUB ELEC"S
J011N I1. Bose was re- elected Itresident
of the Radio Club of A merit a for the
1953 season. Serving with hint will be
Ralph R. Hatcher, vice- presit ent; Joseph
Stantley, treasurer; F. I. Shepard.
Jr., corresponding secret try; and
Frank A. Gunther, recording secretary.
Ernest V. Amy. Edwin H. Arinst g.
George E. Burghard, Alan Hazeltine.
Ilarry W. II 'k. Jerry Min ter, and
Ilarry Sack!, water were electel to the
board of dir,tors of the club for this
year.
ANTENNA ORIENTO
By ELMER C. FISCHER
IN HANDLING '-luau antenna installations
where orientation .s a eri t-
ical opera t' . the author has f.sund an
antenna rotator of the type tilt t drives
from the bottom end of the :east to
be a very valuable aid.
The rotator is clamped to a stub
mast that can be fastened to the chimney
mount brackets with lar ;e "U17
bolts or merely tied un with clot hesline.
(In other types of installations, the
stub mast is merely affixed to th. brackets
to he used for the antenna toast
and some temporary support nay be
rigged up for the antenna.)
After the rotating cup is fast'ned to
the antenna Mast the bracke t bolts
holding the mast can be loosened
enough to allow it to turn.
A temporary cable is then rue to the
control box at the receiver Iocat:on and
the antenna can be oriented very precisely
in short order.
Tighten the bracket bolts. - entove
the stub mast and rotator, roll up the
cable, and the job is done.
How antenna can be oriented by one man.
LOOSEN
CHIMNEY MOUNT
BOLTS
LARGE BOLTS
OR ROPE
STUB MAST
ANTENNA
ROTATOR
April, 1953
CABLE DISCONNECT
PLUG
CABLE r0
RECEIVI R
LOCATIC N
YOU SAVE AT POLY -TECH
GOING MOBILE? CO-AXIAL 6
SPDT WILL
VDC HANDLE
RELAY UP TO 75 W. RE.
uses standard co -ax connectors. Send your
order in today Y b'cuz they'll Y go Oa 7C
like hot cakes. Prepaid
1 iF
MOBILE VHF ANTENNA MFD. BY O. E. 152 -162
complete with 12 ft.
Coax cable,
removable cable antenna rod, mount, 831SP (PL-250)
Coax connector, inelallatiun hardware
and instructions. Special, only d2 45
DESK MMICROPHONE
(IOU, yu:dny' ae, h,''
mike.
with cord fa P.,.
(W.E. PL-68i. Perfect o.,
`io`t' police commercial
Irlo
ii'I
telephone Ineeaua.
tine. NEW $8.GB
BOXED each ... v YY
DE
NT V115V
TRANSFORMER, 115V
lo: o put at 30 VA. In.
put 110-1;10 VAC 60 ü.
x 3^ 3 ^. 8 ft. r ht er
cord A Plug. receptacle
Deleted wt. fromlbs Printery
New
each epST,95
NOVICE I ISV, 60 CY PWR SUPPLY KITS
A 600 VCT 95 MA, 6,.:IV 3A, 5V 2A; K HY 100
MA chokes (2 ea.); 8 x 8 MFD 600 h6
VDC oil capacitors a TUBES
B
C
Plate transformer 740VCT 305 MA; 5V 6A 6.3V x
BA dual fil. transformer; 4.6 HY :i10
MA chokes (2 ea.); 8 x 8 MFD
600 VDC oil capacitors $ 1250
IDEAL KIT FOR NOVICE X- MITTER. Trans-
a former 880 VCT (a 125 MA, 2.5V 3A, 5V
3A, 6.3VCT 3A, 7 HY 125 MA choke (2 ea.).
Dual 8 MFD 600
Line
oil Cap. Chassis. 51-146,
jewel, Tog. Sw.. Line cord, Fuse post, Bleeder,
Hook up wire and Schematic. $ 15.95
Only
D 750 VDC oe 225 MA Pwr Supply. ideal for
Powering from one source ARC -5 X- Mittens.
or any 150 Watt rig. Tranaf. 750 -600 -0 -600-
750 VDC (d 225 MA. 6 HY 250 MA choke
12 ea.). 6.3V 4A x 6.3V 4A Fil. Tranaf., 2
Mr 1.5 KVDC and 4 MF 1 KVOC oil cap.
6V 4A Fil. Tranaf. chassis. 51t IIiV. la edcr.
jewels, Toq, sx'a, line Curd. Q`rl9r5o
Sehem:liir, el,'. Only
L.7 et
FREE TELEGRAPH KEY ON REQUEST WHEN
ORDERING C & D KITS. For limited time only,
act now:
CHOKES
9 HY 95 MA, e:...,1 $1.15
15 HY 100 SI A, cared 1.95
10 HY 200 MA, cased 2.75
15 HY 250 MA, caged 3.75
( 5 HT 300 MA 70 OHMS. 2 FOR $4.95
K HY 400 MA 110 ohms. , ....I $5.59
6 HY 500 MA 35 ohms, cared 7.25
.05 HY 3A 1 ohm
.02
2.93
11Y 5A .5 ohm, cased 4.95
Now! HANDLE UP TO
90% OF TV TROUBLES
by the easy
PICTURE
ANALYSIS
METHOD!
/ .hoot
4pa .
Out h "- - Irals TV (roublein.
.. h,,. ".'r! Slake repairs
take a, tart: Operation of Ghir-
MI's new FIX -O -FIX TV
5' TROUBLE FINDER GUIDE Is
simplicity Itself. Corers ail TV
Jeceivers.
ust turn dial until actual TV
senses photo appearing In PIN -(1.
FIN "window" matches distol',-
PIX - 0 - FIX picture on set being repaired. l'I
H -FIX then gives you all peers
causes for this trouble and .
TV TROUBLE where In the receiver they
likely to be found. Hut that
FINDER GUIDE only Me h .:Lorain.!
Ghirardi &yMiddleton
Covers 24 common
(roubles identified by
actual screen photos
190 possible
causo of these trou
bees localised to re
ceiver stage or section
where they are most
likely to occur.
253 step -by
step remedies 1 o r
these troubles.
4.500 words
In CAUSE A N D
REMEDY section to
show exactly what to
do.
WHAT TO DO-
HOW TO DO IT
Step-by-step repair last Diet
follow. Components likely to
faulty are specified. Quick ter,
are outlined. l'IX -O-t1X gunk.
you every step of the way!
Remember! I'IX -O -FIX Is NOT a
'Ile-it-yourself" gadget for cons
users. It Is a truly professional
device for servicemen, apprentices
and students -prepared by two of
the nation's foremost service in-
ItnIerora -A. A. Ghirardi and It.
i(. Middleton.
MONEY BACK IF YOU'RE
NOT SATISFIED!
Simply pin a $1 bill to this ad.
Mail with your name and address
to the publisher. If not
satisfactory, return PIX -O -FIX
in 10 days and your SI will be
refunded promptly. (Price outside
U.S.A. $1.25 same money -
back guarantee).
Dept. RN -43, RINEHART BOOKS, Inc., Technical
Div., 232 Madison Ave., New York 32, New York
0A2 2 for 52.25
082 2 for 2.5
053 2 for 2.60
0C3 /VR90 2 for 2.40
0C3 VR10S 3lor 2.60
003/ 2 for 2.30
2 for 2.90
304T1. 2 17.95
533 2 for 1.5
2 for 3.25
668 for 340
654 for .25
8011 2 for .99
1N34 DIODES
LIMITED QUANTITY
fo only 53,95
OIL CAPACITORS
2 MF 600 VDC .n 79
Me 600 VDC 99
6 MF 600 VDC 1.65
fo Mc 000 VDC 2.99
5 MF 1000 VDC
3s
2.50
MF 1000 VDC a.so
MF 1.00 VDC .49
16 MF 1500 VDC 6.93
j MF 2000
F 000 VDC 1.95
2 MF 2000 VDC 2.95
MF 2000 VDC
4 5.50
8 MF 2000 VDC 2.1
y MF 2500 VDC 2.15
.25 MF 3000 VDC 2.90
.5 MF 3000 VDC 3.15
3 MF 4000 VDC 9.95
MF 4000 VDC 13.50
1 MF 5000 VDC 5.95
2 MF 5000 VDC 10.30
2 MF 6000 VDC 12.95
1 MF 7500 VDC 1.95
2 MF 15KV DC 52.50
1 MF 15KV DC 69.50
Isolation r Bias Tram.,
former. Prim. 117v. <
135V TAP, 6.3V (. rip
35W $1.95
1ISY FILAMENT TRANSFORMERS 60 CY
2.5 VCT 1(IA. 10 KV Insulation
5V 4A 2.5 KV Insulation
5.0 V 6A. 6.3 V 6A
5.0 V 12A. 2.5 KV Insulation
5.0 VCT 20A. 2.5 KV Inaulatlon
14.50
1.99
3.95
5.91
6.65
2.25
6.3 VCT 3A. 2.5 KV insulation
6.3 VCT 13A, 2.5 KV Inwlailen
6.3 V 10A
3.15
10 VCT. 10A.2.5
3.95
KV Insulation. caned
Dual 25V I AMP
6.00
14.7 V 500A.
1.95
250 V Primary
1161/ POWER TRANSFORMERS
68 to 83 V Half Wave.
300 V Half Wave .02A
37 V Half Wave 3A
700 VCT 2.95
100 MA. 5V 3A
740
2.5V
VCT
10A 2.25
185 MA. 6.3V 4A,
R80
5V 3A
VCT
5.95
200 MA. 5V 2A
680 VCr 225 MA . ..
7rm- nCT
2.95
-0- 6(10.750 \'DC 225 0iÁ
31.00 VCT 320
11.50
MA
29.50
POLY TECH
39.50
60 CY
1.5A f 1.23
Dept. D -3, 919 O..w.nn St, N N. . York r 59. N. Y.
S.nd fore
MU....y Hiil 6-2650
E
IRE "TV - the
nd ELECTRONICS
Out
NOTES' It presents
7
.
IMPORTANT FACTS EVERY
SERVICEMAN MUST KNOWabset
HF
Vital Serviceman's information regarding
Installation, Reception, Converting existing
Sets, Tuners, etc.
"FRINGE AREA
RECEPTION
How to get best results at lower
costs, improve performance, AND -
OTHER IMPORTANT SUBJECTS
Get this special FREE copy, or for regular sub -
scription to "1V and Electronics Notts" send 50c.
- -- RUSH THIS COUPON NOW tom..7
TRANSVISION, INC., NEW ROCHELLE, N.Y. Dept. RN
O Send FREE, the latest issue of 'TV and Eire-
Ironic, Notes' on UHF, Fringe Area Recep.,etc.
Name
Enclosed find 50e for regular subscription.
Address
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State
e
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