Sentinel Radio Corp. 175B Schematic

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Product Information:
Model:175B
Manufacturer:Sentinel Radio Corp.

Schematics Content:

Please note: this content is a computer-generated interpretation of the above schematic and is provided only to help assist you in locating this schematic. For the actual text, please consult the schematic above. Thank you.

Page 1:

SENTNIEL PAGE 11 9
SENTINEL RADIO CORP
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Page 2:

PAGE 11-10 SENTINEL `
MODEL 175B
Socketmimers SENTINEL RADIO CORP.
Chassis ,Alignment
4 TUBE - 1% VOLT BATTERY OPERATED
5 SUPElllIETEll0l)YNE RECEIVER
r WWI COM?
i cow: mr- wmv mm norm
Be sure to fellow procedure carefully and in the order given?ctherwise the receiver will he insensitive arid the dial
calibration-incorrect. For alignment procedure read tabulations from left to right, Ii more than one adiustment is required
on any one band, make the adjushnent marked (l) iirst. (Z) next, (3) third.
Before starting alignment:
(U) Chsck tuning dial adjustment by tuning gang condenser until plates touch maximum capacity stop (completely
mesh) at which point the dial needle must be erraztly even with the last lrrre at the low frequency end of the
dial calibration. If dial needle does not point exactly to last line move to correct position.
(b) Use an accurately calibrated lest oscillator with som-2 type of output measuring device. ~
(C) Have qrofund lead cf test oscillator attached to chassis.
TEST OSCILLATOH
Un dummy
se* K Adiuxt ton m,|,,m,, in "5" Attach output Rotor to pcm: layout diagram im
d,;?:?_"' oscillator ,uh ,,,,,,,?? oi mt location ol trimmers meuaauaa
' lroquency tar M, ?,,mm, urauatua mr bein:
consisting oh _ U
us High side to Adjust each of the second I. F.
' Mm grid terminal transformer trimmers for mara-
AQZ ?__?;';?;'i?;re 455 K' C' ?gidens?r ef lA7G aube murrr eutput-them adiaet each
signal" DO NOT of the first I. F. trimmers for
,waived REMOVE CAP. maximum output,
Exactly Exactly .00025 MFD. Receiver blue Adiust 1730 K. C. oscillator
1730 K. C. 1730 K, C. condenser antenna lead tdmmer lor maximum output.
2 Approx. Exactly 00025 MFD. Receiver blue W}}1l9 YDCUHQ C0119 Condenser
1400 K. c. 1400 K. c. condenser antenna lead <=> <1 antenna *fim-
mor for maximum output. ,
SENTINEL MODEL 175B
(C)John F. Rider, Publisher

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