T EVIS i - AmericanRadioHistory.Com

nllent
95
D.e.198
e
B
d. Adjust the inductar ce until
bars disappear or are reduced.
21D1
Poor vertical linearity or foldove..
1. Check vertical output tube
V402.
2. Check resistor R411, if this
resistor is 820 ohms rc place it
with a 680 ohm, 1 wa :t resistor.
Vertical roll.
Vertical oscillator may ')e triggered
by ripple from vertical output
stage in "B -i-" suppl . Roll
will result if ripple voltage has
shifted in phase.
Change the "B +" connections of
the 6W6GT vertical output tube
as follows:
1. Disconnect from the 80 pfd.
filter condenser C407C the red
wire coming from the vertical
output transformer.
2. Connect the red wire o junction
of C427 and L403 through
a decoupling resistor (5.000
ohm, 5 watt or three 15,000
ohm 2 watt in parallel 1.
3. Connect a 20 pfd. 450 vplt condenser
from the junction of
the red wire and the decoupling
resistor to ground.
21B1 THROUGH 21Z1A CHASSIS (above
Run 15)
SERIES 22 CHASSIS
Improving sync in extreme fringe areas.
1. Increase sync separator voltage
by increasing R117, in
some cases to four ti nes its
original value.
2. Increase resistor R42: (1000
ohms) to 4700 ohms to remove
vertical jump.
3. If 2. above does not won k satisfactorily,
change condenser
C315 to 470 µpfd.
SERIES 22 CHASSIS
Wide spacing or pairing of raster lines.
Sec hint under Series 21 Chassis.
Retrace line elimination.
See hint under Series 21 Chassis.
Bending picture.
Bending as contrast control is
changed may result from improper
sync separation lue to
variations in picture transmission.
Reduce R417 to as low as
10,000 ohms, depending 3n the
amount of bend.
To increase width.
Change C431 from .1 pfd. to .05
pfd.
22A2. 22A2A. AND 22Y1 CHASSIS
To increase sound in fringe areas.
In tuning for the best picture in
fringe areas, the sound ca 'vier is
moved down the i.f. curve closer
to the frequency of the a ljacent
channel trap (L108). This causes
attenuation of the sound level.
To increase the sound le 'e1 detune
the 19.75 mc. adjacent video
April. 1953
STILL...AT LOWEST PRICES!
BROADCAST BAND & AERO
Ideal for Use in Boats, etc.
MN 2i.A. Ilrmonr Controlled Nat tga.
tillai Direction tinder and c uni
cations r ceiver. Manual DE rt in any
one of three freq. hands. 150 to
1500 KC. 24 V. Self contained dyt,otor
supply. t n,n lote Inatnllait.
Including receiver. trol box.
loop. asimuth control. Left- ltlght Indicator.
plugs. loop transmission
une and flex. shafts.
BRAND NEW 599.50
LIKE NEW $69.50
MN26 -Y 130 t 325 KC. :l25 to 603 KC. 3.4
to 7 i gacy In. comp. Installation 569.50
Receiver tn alone 35.95
MN -26C alone. like new........ 39.50
MN -26.0 MN 26.Y :i. I. Ie., tubes 13.95
\Coe n 1 24.95
M N.20E I I :.i 6.95
MN52 k ,I i... N -ii 2.50
MONTHLY SPECIAL!
TS1O TEST UNIT
t... 11.1 350 feet
,''.t S.no,.n.i. $14.95
,
Complete with : ..t
of coaxial cable. l n
New Condition. 01,11
SCR -274N COMMAND
and ARC -5 EQUIPMENT
EXC. USED
twith ubes) NEW
RC -450 Control Box
(3 Receiver) 31.95 $3.95
11C450 Modulator 32.95 .95 ....
11('-451 Control Box
ITransmittern
13(' -442 Relay Unit ANT
With Condenser
Without Condenser .
Flexible Shafting w i t h
1.95 3.95
3.95
1.29 2.95
Gear to fit r eivers 2.5
3 Receiver Rork 2.29 2.9S
2 Transmitter (lack 2.39 3.97
. iOle Transmitter Rack 2.25 2.95
1,M :12 Denmm..tar for
Command Set
DM-33 Dynamotor for
Command Set
Shock Mts. for 3 Receiver
(lack. 2 Trans. Rack.
I M.xlnlator nr Ant. Re-
lay Unit
3.23 7.95
2.95 3.95
1.95 2.45
WANTED!
All TS, APR. AIS. ARC. ARR. ART. SCR. RR9
and C
write nod
first letter
Quote lowest prices in
HAND SETS
TS9. excellent roh.13311 54.95
TSI3. excellent e titian 5.95
TS Type. txa, lire+ card 2.95
SPECIAL!
8C457 TRANSMITTER -4 to 1.3 me and
R TRANSMITTER -5.:1 to 7 and
!as
BC455 RECEIVER -0 to 0 m s1 is. less tulle
1. c0 54.95 each
11, 111 unu> for 58.95
RT 34 APS 13 Transceiver used as a tail warning
:filar . h 41 i MC. Containing a 311 MC IF Strip a
other parts. these uihllx haca been strippt.l till
IiE hx coons an.l all tubos. huta
1 ' I
.
nlr tifo parir and IF stir.... 7 .ustxl St4.9
B C 624 receiver hFt'It 122.. less luilia
Inl, Aal SR sell 19.9
B C 625 tran.m iter .SIR 522. le -.s tires used 9.95
SCR 522 u fete ill case with
top tweet", Ira. ti r 29.9
Transcéver -140.144 íh
txl, ex-
'rllrni r..nditinn. 11,11a motor. with
tines soso only 24.95
R W ELECTRONICS DepL N, 1712-14
Just
1220 pages
80,000 items
8,000 illustrations
8" Xll " -5 lbs.
v b e<
r11'Ì011
price throil(nt Tl -
110
for
partir'
PLUGS
Large quantify available!
166 170...52.50 ea.
167 1 MC277 .49 ea.
169
171
ea.
172
ARTI3U6U
$1 25 ea.
MIKES and HEADSETS
........ ... ..e x:.52.95 new 57.50
115 -33 1.0m 1111,0,nc,
Hs -23 Headset
. ,..,.,.. -. -usrd $2.95 new 54.95
CD -307 Exl. dud rnr RS 2:1.3:1
....like neW .70
Throat Mike -T :10 New .98
Lop Mike -Navy Type....
Extension ..-New
Cord and switch Au stIIl 99
luI' for Im and throat xnceh. .Nosy .98
CW 49505 Nigh Impedance headset ddnnJele " h
leather headband alto rublrer cuxhianx.
T.17. Microphone tsed -exc. $3.75
145.33 ..... ... .. exc. 31.93 w 2.29
115.30, miniature headset.... used 1.49 new 2.49
DYNAMOTORS
The hest dinamotor for ctonversion to Ov. Multiple
windings! After ch raton you Let choice of I!0
or 350 v at 50 MA _n ., v. at 1110 MA. Complete
dope sheet furnished. .
BRAND NEW (See "CQ Aug. issue' $465
WOBULATOR
BUILD TV -FM -AM SWEEP GENERATOR
You an build ''versatile Sw ep Frequent, - '
with : AlN -1 magnetic units 55 95
RT7 /A Ni TRANSCEIVER UNIT -Used as
It ,
tell lur sigualin,g control c
i-hhlts. etc. utYCompl,te ewith 14 tubes and dynamotor
they are In cota) insert condition at the an, ,í,
tow'
I.rice of 517.95 1v
Used. less tubes. with wobulator 9.95
MISCELLANEOUS EQUIPMENT
FL B used, e 1 51.19 BC 347 molt.. :
BC 906 each ` 9.95
C
YE-4B
ill Electric Drl:iy I.t l'nll 10011 (nuts + Or
iIl1, 1
Y nil pass I, - _ nu-. 4 hmcro s.cm,d tltlay time.
1o'nml :.w 52.50
SELSYN TRANSMITTER
Limp Motor ngto and Transmitter
112 A Indicator. Used. A i1y rn ndlt r
on
ONLY $5.95. Complete with Indicator... S 1 4.95
111.42 Reversible Motor with antenna reel and
clutch, used ... .. .... ..3 2.95
BC 433 R COMPASS 111 (T:lt' F.R. o I to
1700 KC. u xml. excellent . condition. itiwith
tubes
39.95
,.I. r leas t 24.95
pd. cis. Ie.. ulhµl n....nid ..ntr. axe, for
(`parti 8.95
ARMY SURPLUS PORTABLE TELEPHONE
C111nµlese wich Tx I:1 hand.rt 5 14.95 ..
2 for 327.50
Shipments F.O.B. warehouse. 20eí, Deposit on
orders. MInImum Order 55.00. Mono's residents.
add . tato re stance.
Prices subject to change without notice.
S. Eich
Ar C7h931;a4 go 16, Jul
n
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121