May 1930 Radio-Craft
Wax nostalgic about and learn from the history of early electronics.
See articles from Radio-Craft,
published 1929 - 1953. All copyrights are hereby acknowledged.
For a few years I have been occasionally posting radio service data
sheets for vintage radio sets, all of which appeared in electronics
industry and hobby magazines such as
Radio News. Unlike the last decade and a half, procuring
service information on commercial products could be very time
consuming, and often resulted in not even obtaining what you needed.
Thanks to the Internet being populated with schematics and mechanical
drawings for seemingly everything ever made, we no longer need to
call or mail order for information needed to repair your radio,
television, cellphone, lawn mower, toaster, or anything else. Granted,
most people these days toss out broken items and just buy new ones.
Before the advent of companies like Sam's Technical Publishing
information packets, it was often impossible to obtain schematics
and service information from manufacturers unless you were a certified
service shop and/or dealership. In response to many inquiries from
Radio-Craft's readers, publisher Hugo Gernsback queried
the top manufacturers of the day to determine their policies for
distributing such data.
The Radio Manufacturer Has His Say
"Frenzied Radio," the leading editorial by Mr. Hugo Gernsback
in the February issue of Radio-Craft, aroused more heartfelt comments
than any other expression of the Editor's views which he can recall
from more than twenty years' publishing experience. This office
was literally swamped by thousands of fervent communications from
Service Men and other readers in all branches of the radio trade,
as well as from consumers who voiced their interests in the matter.
In that editorial, we promised to publish any comment which radio
set manufacturers desire to make, with regard to their policies
on servicing in relation to their dealers, other Service Men and
the public. The letters presented here give the widely. differing
viewpoints of the leading manufacturers; which we print here in
their essentials, leaving to our readers all deductions from them,
and comments thereon.
We only ask whether, since the radio industry is still at odds
as regards its relations to the Service Man, the radio set manufacturers
would not do well to agree among themselves on a policy to which
all of them can subscribe? Such action would certainly tend to clear
away a tremendous amount of the dissatisfaction which exists at
present among radio dealers and Service Men.
The writer cannot let go unchallenged your invitation to the
radio industry to produce a radio manufacturer who has been giving
conscientious service to the .purchasers of his radio receivers.
We have always prided ourselves on just that point, and we must
therefore take exception to your statements. A careful analysis
of your editorial ("Frenzied Radio," in the February issue of Radio-Craft)
discloses quite a few claims that do not coincide with our own views
on how we have been doing business since our first set was sold.
Early in our radio manufacturing history, it became necessary
to lay down a definite policy for stocking radio repair parts. We
felt then, as we do now, that any individual who invests a considerable
sum in a radio receiver is justly entitled to expect service on
it for its natural life. A careful survey of the life of the average
set was, therefore, made with the result that we laid down the ruling
that we would continue to stock all parts in any way necessary toward
the complete repair of any Stewart-Warner radio receiver for a period
of three years after the introduction of the subsequent model. Furthermore,
we would continue to stock indefinitely all parts for which there
was any demand as evidenced by our sales records for the previous
year. To live up to this policy, it has been necessary at times
to go to extreme measures in securing repair parts. Manufacturing
schedules have often suffered, night shifts have been instituted,
our distributors' stocks have been searched, and often special machinery
built. Quite often, as a result, we were compelled to sell parts
considerably under our manufacturing costs. Our only reason for
such action was to insure consumer service that had been promised.
Realizing that the Service Man plays a very important part in
keeping a customer satisfied, we have always given our fullest cooperation
to anyone requesting service information. We even went to the trouble
some time ago of preparing a special correspondence course in radio
for the benefit of the Stewart-Warner dealer or his Service Man.
Since requests were received for extra copies of this course, our
radio service department made up a quantity of reprints which were
mailed to any Service Man requesting this material, regardless of
his affiliations, until the course became outdated and was discontinued.
At the present writing, we keep on hand circuit diagrams of all
sets we have ever made, and will furnish them to anyone without
question. As a further help to Service Men, we have reprinted all
these diagrams in our latest service manual, just off the press.
Our own policy is to supply all service information and instruction
books without charge; and we have kept all service data reasonably
simple, so that this may be done without entailing an expense entirely
out of proportion, to the benefits derived. We can, nevertheless,
see the viewpoint of the manufacturer who gets out elaborate manuals
that are in reality textbooks on radio, and then feels justified
in charging a nominal price to insure that he will not be imposed
upon by any individual who may happen to be sufficiently curious
about his sets to write for a service manual. We use as a guide
the letterhead on which the request is written or, if a plain piece
of paper is used, we judge by the general tone of the letter whether
the individual really needs a service manual or is only in need
of our instruction book.
The apparently excessive selling price of radio repair parts
for old models at first glance may often seem out of reason; yet
a closer analysis will show this conclusion to be ungrounded. In
our own case, parts are priced after they have been in manufacture
for a sufficient length of time for us to know exact costs. Once
that price is set, it is seldom changed. Obviously, every year manufacturing
costs drop considerably; so that a transformer that must be sold
at $6.00 one year can be made to sell for not more than $4.00 a
year or two later. Nevertheless, the older transformer must still
sell for $6.00, even though it is not as good as the later model;
since its manufacturing cost was the higher figure. Following this
line of reasoning, which is the only correct one, the price of repair
parts must necessarily bear a direct relationship to the original
selling price of the radio - not to any subsequent close-out price.
The dealer should, in all fairness, point this out when he sells
any set below its normal value. A good second-hand Cadillac may
be bought for $300, yet the repair parts cost as much as for a new
Your claim that only in the last year or two have radio set manufacturers
been supporting broadcasting, is not borne out by facts. We announced
our own entrance into the radio industry by leasing a broadcast
station (WBBM) for two years; and we still tie up indirectly with
broadcasting though our distributors in many cities throughout the
country. In addition, you will find the following outstanding manufacturers
who have been actively sponsoring broadcasting prior to 1929: Atwater
Kent; All-American, Amrad, Crosley, De Forest, Federal, Grebe, Philco,
R. C. A., Zenith. We have purposely refrained from listing any manufacturer
who has been broadcasting, directly or indirectly, for less than
We believe that Radio-Craft is sufficiently widely read to command
attention, and any editorial it features deserves consideration.
With this in mind, we are sure that you will agree with us when
we ask you to devote space in the pages of your magazine for
the refutations submitted by responsible radio manufacturers
who are sincere in their belief that they are handling their service
problems in an eminently fair manner.
J. N. Golten, Radio Service Department.
Every time a new model Philco radio is put on the market, a complete
service manual covering that model is sent free of charge to all
authorized Philco dealers. We also supply copies of these manuals
to radio editors of newspapers and reliable magazines on request.
All service problems and the distribution of repair parts for
Philco receivers are handled by the jobber. It is, of course, impossible
for the factory to fill any orders for parts when they are sent
in by unknown people. Quite often when parts are sent out in this
way, they are used incorrectly, due to lack of knowledge, and the
owner will then blame the trouble on us. However, if any Service
Man is established in this business, and can show that he is well
trained in this kind of work, I am confident that he can go to the
nearest Phil co wholesaler and buy the parts needed by him. We leave
this entirely up to the wholesaler, because he has a much better
knowledge of service conditions and can investigate the Service
Man's ability a lot better than we can here in Philadelphia. We
would prefer to have a user of a Philco receiver that is
giving trouble take it back to the dealer from whom purchased;
and, if this dealer cannot repair it, he will return it to the wholesaler,
but never to the factory.
It has been our experience that a big majority of all Service
Men who are working on all makes of receivers never get enough training
on anyone to become proficient. The exceptions to this can get in
touch with the nearest Philco jobber and I am sure he will give
them all possible cooperation.
Philadelphia Storage Battery Company,
Robert F. Herr,
We feel that the successful dealer must be organized to serve
his customer and keep him enthusiastic about his purchase. The customer
is certainly entitled to receive merchandise that operates satisfactorily,
and it is the responsibility of the dealer to make certain that
this is the case. All successful enterprises are built on this principle.
If the merchandise does not operate satisfactorily, the dealer must
be in a position to make repairs either through his own organization
or the organization of the manufacturer. Certainly the success of
any manufacturer's products must depend upon the degree of satisfaction
they give their owners.
The fact that no radio manufacturer yet enjoys a popular reputation
for excellence of service through his dealers must be due to the
relative youth of the radio dealer system, and that it takes considerable
time to build up a dealer organization that is reasonably perfect
in this respect. I have no doubt, however, that this desirable condition
will be eventually attained, particularly as we recognize this as
our ideal and are striving to accomplish it.
This is one of our reasons for not desiring to support the independent
service organization, but to concentrate our efforts in an attempt
to perfect service through our dealer organization. I agree that
the dealer service organization is far from perfect at the present
time; but I do not feel that the condition will be permanently improved
by sacrificing principle to expediency. We want our customers to
feel that we are 100% behind our product, and it is our humble opinion
that this can best be accomplished by having control over the organization
that serves the customer, rather than depending upon independent
service organizations to accept a responsibility that is our own.
R. C. A.-Victor Company, Inc.
W. A. Graham, General Service Manager.
Our service information is published in a little paper that is
sent twice a month only to authorized dealers, distributors and
distributor's salesmen. About twice a year this service information
is compiled and put out in pamphlet form, called the Crosley Service
Manual, and this pamphlet is sent to all Service Men requesting
service information. Although it costs money to prepare this, we
do not charge for it, nor do we think a charge should be made.
However, we must have some kind of ruling covering the distribution
of service manuals; therefore any man claiming to be a Service Man
must write in on his business letterhead. We require that they have
some sort of letterhead showing that they are engaged in the repair
business; or in some business such as garage, automobile accessories,
hardware, music store, electrical or music house.
When a Service Man writes in on a postal card or an ordinary
piece of paper, requesting a service manual, we immediately write
him, telling him that his request must come on a business letterhead,
otherwise we cannot send him, the information requested. If we are
included in some complaints, our refusal is due simply to the fact
that the party writing in did not show evidence that he was in the
There have been some cases where we received requests at a time
when we were out of service manuals; but these people received letters,
telling them to write again within two or three weeks, at which
time we expected to have a new supply.
We have also had requests from Service Men for information on
certain obsolete sets, and (as the models had been out of production
four or five years or more) no service information was available,
and we therefore informed them to that effect.
The Crosley Radio Corporation
D. J. Butler.
Our business is built largely on a foundation of loyal dealers.
In fairness to the dealer, we cannot furnish instruction sheets
indiscriminately to Service Men working independently of our dealers.
You are aware of the possibilities of careful servicing by the
dealer with respect to the good will it builds up for him. It is
fully established that much of his new business is obtained from
recommendations brought to him through servicing. It will be seen
that helping to build up a large number of independent servicing
units would not be to his interest.
Frankly, we haven't much faith in the ability of the majority
of independent Service Men. We are not referring to the established
servicing concerns, but to the independent Service Man who in many
cases is making a side issue of the job of servicing, and practices
it after a regular day's work. The present tendency of numbers of
young men setting up to do service work on their own responsibility
is economically unsound, and we do not wish to encourage it. The
situation will, of course, adjust itself in due time.
We have no desire to hold back any ambitious young man who earnestly
desires to make servicing his livelihood; but the proper procedure
for him is to obtain first of all a basic training at evening school
or some other institution. Then to start in with a reputable dealer,
later to branch out for himself if he so desires.
Undoubtedly there is rivalry between the independent Service
Man and the authorized dealer. This is evidenced by the tone of
the letters you submit which have been received by you from Service
Men. But we are not persuaded that we are wrong in our present policy
of furnishing instructions only to our authorized dealers. Where
an outside Service Man can be of help to the dealer, the dealer
will be only too glad to let him have instructions and data books.
There are a number of good servicing concerns, and these firms will
find no difficulty in obtaining the information that they desire;
but it must come to them through the dealer with whom they are working.
We invariably make this recommendation to concerns requesting this
information, and we write the dealer in his vicinity at the same
The great majority of our dealers are doing a splendid service
job and we are well satisfied with our present method of servicing
of our Stromberg-Carlson receivers.
Stromberg-Carlson Mfg. Co.
Ernest S. Browning,
Chief of Service Department.
It is contrary to our policy to broadcast service bulletins on
our radio receivers; likewise it would be contrary to our policy
to offer them for sale to various radio Service Men. Inasmuch as
we have only a few dealers across the country and do not desire
many dealers, it is much better for us to have our radio sets serviced
by our own dealers. Also, we give a very substantial guarantee with
each set and, in order that the owners of our receivers may receive
the full benefit of this guarantee, it is much better that they
have our own dealers do service work.
Graybar Electric Co., Inc.,
General Merchandising Department
T is our policy to furnish to radio servicing organizations the
necessary blueprints and diagrams for the use of their service departments.
We do not furnish a complete manual for anyone except our authorized
dealers and distributors. Each distributor renders factory service;
and, if the dealer wishes to avail himself of service instructions,
he has but to apply to his jobber, and they will issue instructions
to him to come in and stay just as long as he likes, to secure the
It has been our policy in the past, to furnish service information
to no one except our own authorized representatives. Of course,
where we know that the company requesting this is so trained that
they can render service, we furnish information in the form of diagrams,
etc., for their aid.
L. G. Wilkinson,
We are glad at any time to furnish complete service data to any
individual service representative requesting this information, and
without charge. The writer has been in charge of service problems
of this organization since its inception, and does not recall that
we have ever refused to supply individuals or owners of our product
with internal wiring diagrams and complete service data pertaining
to particular sets on request.
At the present time we are unable to supply complete data on
our products manufactured prior to 1924, due to the fact that our
stock has become depleted. We likewise are not making a practice
of repairing or furnishing parts for sets manufactured prior to
1924; because the demand does not warrant the expense involved.
A. H. Grebe & Co.,
F. B. Ostman,
Asst. Sales Manager.
Switchboard & Supply Company
We are not interested in selling our service manual to anyone.
We supply same through our regular distributing channels, free of
Kellogg Switchboard & Supply Co.
J. K. Utz, Manager Radio Sales.
It has been in the past, and probably will continue to be in
the future, the policy of this company to send service data to independent
service stations when they desire it. We make a charge for this
material merely sufficient to cover the cost of production and distribution.
The attached form letter this office uses to answer any requests
from independent service stations.
There is much that can be said for and against the attitude of
some manufacturers in distributing their service literature only
to authorized dealers. However, this company has felt that service
stations interested enough in their library to purchase the books
they desire should have consideration.
The Amrad Corporation,
L. D. Trefry,
Manager Service Department,
(The form letter offers the Amrad Service Data Book at $1.50,
postpaid, with a supplement in the form of blueprints of receivers
for the past two years - Editor.)
Any Service Man in the United States can obtain a service manual
on any model Steinite set ever made by going to the local distributor
of Steinite products in his vicinity.
It has always been our policy to issue circuit diagrams and complete
service data; as we feel that if the trade is properly informed,
we will have less merchandise coming back to the factory for service.
We shall be very glad to receive a copy of your survey and its analysis
and, if we can assist you in your work in any way, we are at your
Steinite Laboratories Co.,
O. R. Coblentz,
Asst. General Sales Manager.
order to protect the original purchaser against the possibility
of sacrificing their 90-day factory guarantee, by having other than
our authorized agents make the repairs, we have adopted a policy
of releasing service data on current models to authorized Day-Fan
distributors and dealers only.
We have been mailing service manuals which do not include data
on current models, at a nominal cost, in response to all inquiries
which indicate that the writer is a legitimate radio Service Man.
Where we do not have authorized distributors, who carry parts
in stock, we make shipment on parts direct to the individual or
service organization placing their order with us. In case the order
or letterhead indicates that the parties concerned are legitimate
dealers or service organization, a discount is allowed on all parts
purchased. However, if we have an authorized distributor, our contract
gives them exclusive rights to sell all parts within their territory.
If they do not carry sufficient parts to make immediate shipment,
that automatically and temporarily cancels their contract, and we
make shipment direct.
General Motors Radio Corp.,
C. E. Greene,
When we appoint a new dealer, we send him as many service manuals
as he thinks he will need; but we have never taken any steps to
supply the independent Service Man with information about servicing
This, however, is not due to a lack of desire to cooperate on
our part. Whenever we receive a request from someone for a service
manual, it is sent to them without charge, regardless of whether
they are connected with a Kennedy dealer or not.
However, if we were to go into supplying service manuals to Service
Men not connected with any Kennedy dealer, I think we would have
to make a small charge just to prevent them from being ordered by
Service Men who are inquisitive rather than interested. Our service
manuals cost us about 30c. each; but we would supply them to anyone,
upon request, for say 10c. We are glad to cooperate with radio Service
Men anywhere and everywhere at all times.
Colin B. Kennedy Corporation,
Asst. Advertising Manager.
We are always glad to supply complete information regarding our
line to anyone requesting it. We have instruction sheets and diagrams
covering all models and these are supplied at a cost of 25c net
per copy. As our business is tied up very closely with custom builders
and service stations, we probably cooperate with them closer than
most manufacturers. We have even prepared and published at considerable
expense a Sales and Service Course. This is supplied complete at
a cost of $5.00 and those subscribing also receive a mass of information
which is sent out from time to time, covering matters of interest
to set builders and Service Men.
Hammarlund Mfg. Co., Inc.,
L. A. Hammarlund.
One manufacturer's service department writes as follows, in reply
to our quotation of a paragraph in the letter of a Service Man who
had commented on their courtesy:
"The point we are driving at is that, if you were to publish
the fourth paragraph of your reader's letter, which reads as follows:
'In reply I received a very nice letter from their Service Department,
together with blueprint and book of instructions, and discount offer
for any parts needed,' we probably would be swamped with requests
from all over the country for free information, and it would cause
us considerable trouble in correcting the impression that the public
received. We appreciate your offer to publish the letter praising
our cooperation, and ask that you correct this one part."
Posted September 15, 2015
Radio Service Data Sheets
These schematics, tuning instructions, and other data are reproduced from my
collection of vintage radio and electronics magazines. As back in the era, similar
schematic and service info was available for purchase from sources such as
SAMS Photofacts, but these printings
were a no-cost bonus for readers. There are 220 Radio Service Data Sheets as of
February 2, 2018.
Model No. 36 Dual-Wave Auto-Radio
Stromberg-Carlson No. 82 All-Wave Receiver
Majestic A.V.C. Model 290 Chassis
- FADA 9 Tube
Model 190 "Metal" All-Wave
- RCA Victor
Models 9T and K2 9-Tube, 5- to 566-Meter
Motorola "Golden Voice" Model
RCA Victor Model H-6
Simplex Model TA
Automatic "Magic Eye" Model A1
Models 4488 and 4588 (Chassis No.101412) and 4488A and 4588A (Chassis No. 101412A)
- RCA Victor
Model M109 "De Luxe" 7-Tube Auto-Radio Receiver
- Crosley Model
6625 6-Tube 3-Band Receiver
Model 77 Series 7-Tube Dual-Band Receiver
General Electric Models 60, 62
Radiola "28" Super and "104" Power Speaker
Stromberg-Carlson Models 1020, 1120, Series 10
- Air King
- Sparton Models
526, 526X, 526PS
Models 6EI, 6EIN
- Detrola Models
General Electric Model 250
- Howard Model
Model 652 5-Tube Broadcast-Short-Wave
9-Tube All-Wave Model 91
International Model 500 5-Tube Dual-Range Battery
- Emerson Model
678 "Auto-Dynamic" 5 Tube
Nos. 230 and 231 Series
Kent Model 649 All-Wave
Howard Model G-26, and "Airplane 4" Model AA25
Montgomery Ward "Airline" Series 7GM 7-Tube High-Fidelity Receiver
Victor Model T5-2 5-Tube, 2-Band A.C. Superheterodyne Receiver
"Models 50," "51" and "52"
Bremer-Tully Model 7-70 and 7-71
Electric Model M-49 4-Tube Radio-Phonograph Dual-Wave Superheterodyne
Radiola "Superette" Model R7 Superheterodyne
- Crosley Model AC-7
"Columnaire" Models WR-8 and WR-8-R (Remote Control)
of Metal Tubes - and Other "Octal" (8-Prong) Base Types
- Kolster K20,
K22, K25, K27 and K37 Six-Tube Receivers
Nos. 62 and 63, 8-Tube High-Fidelity Chassis
- RCA Model
103, 4-Tube A.C. Compact Dual-Wave
- FADA "Special"
Model 265-A and FADA "7" Model 475-A
General Electric Model C-62 6-Tube Battery
Roamio 4-A-1 Automotive
Model 1316 (in Model 167 Console)
- RCA Victor
"High-Fidelity Electrola," Model R-99
Model 81 ("Bel Canto" Series) Receiver
Fada 103 Fadalette, Stewart-Warner Series 108, DeWald 54 Dynette Sets
Victor R-27 and Philco 53 Ultra-Midget A.C.-D.C. Radio Receivers
Majestic Models Fairfax and Sheffield 8-Tube
No. 29, 9-Tube Superhet
International Kadette Model 400 4-Tube Battery-Operated Superhet
- RCA Victor
Model 5M 5-Tube Auto Superhet
Majestic Model 11 Short-Wave Converter
Model 727-DC Battery-Operated Superheterodyne
Victor Model VHR-307 Home Recording - Phono-Radio Combination
Delco 32-Volt Radio Receiver Chassis Models RA-3, RB-3 and RC-3
Chassis Models 380 A.C. T.R.F., and 400 A.C.-D.C. Superheterodyne
Motors S1A, S1B
Model 7C63, Chassis 7C1
Models 150TC, 151TC
- Kadette Model
RCA-Victor "Magic Brain" Model 281
11A Chassis 11-Tube All-Wave Superheterodyne
Sears, Roebuck & Co., Silvertone "Rocket" Models 6110 and 6111
General Electric Model GD-52
Zenith Models 6D302, 6D311, 6D326, 6D336, 6D360
Allied Radio, Knight Model E10913
- Arvin Model
Models 501, 502, 504
Zenith Models 6D014, 6D029
Models 7-46, 7-46PA, 8-46, 8-46PA
Stewart-Warner Models 9001-C, D, E, F
Zenith Models 5D011-5D027
- Bendix Models
636A, C, D
- ECA Model 108
International Model 66 and 666, 6-Tube Superhet
Radio, Model FT9, 6-Tube Auto-Radio Receiver
Explorer Model W Deluxe 19 Tube All-Wave Superhet
- RCA Victor
Portable Table Electrola Model R-95
Kent Model 305Z 5-Tube 32 V. D.C. Superhet
Jewel Model 40 Chassis 3-Tube Ultra-Midget Receivers
General Electric Model N-60 6-Tube Auto Superheterodyne
Sparton Model 40 6-Tube T.R.F. Automotive Receiver
Clarion "Replacement" Chassis, Model AC-160 A.V.C. Superheterodyne
- Emerson Models
20A and 25A
- Pilot Model
Radiola Model M-30 Automotive Radio
Models 10A All-Electric and 10E Battery-Operated "Moto-Tetradynes"
Kennedy Superheterodyne Short-Wave Converter
Victor Model R-78 B1-Acoustic 12-Tube
Model 15 Series, 11-Tube Superheterodyne Chassis
Zenith Challenger Model 740
Selectronne Receivers Models 1068 and 1068X
- Fada Model
155 Super Fadalette A.C.-D.C. Set
Clarion De Luxe Models AC-280 and 25-280
Crosley Model A-157 (River Roamio) Auto Radio
- Philco Model
'37-116 Codes 121 (Shadometer) and 122 (Dial Tuning)
Arvin Model 28
Philco Model 818
Fada Model 266 Motoset
Bosch Models 736, 737, 738
Model 15U, Radio-Phonograph
Models 566 ("Bluebird" Mirror), A.C.-D.C. 5-Tube 2-Band Midget Superhet
Kent Model 776 6-Tube Auto Radio
No. 61 4-Band 7-Tube A.C.-D.C. Receiver
- Arvin Model
General Electric Models G-105 and G-106
"F," "FF," "G," "H," and "J"
Stewart-Warner Model 03-5A1 to 03-5A9 (Chassis 03-5A) Senior Varsity Radio
- Radiola Models
Models H-104, H-105, H-107, H-108
Models EC-260, EK-262, EK-263, EK-264, EK-265
Models 980744, 980745
Stewart-Warner (R-127 Chassis) Models 1271 to 1279 All-Wave
- ERLA Model
4500 Dual-Wave T.R.F. 4-Tube A.C. Receiver
- Clarion No. TC-31
5-Tube A.C.-D.C. Superhet.
- Detrola Model
105C 5-Tube Dual-Band A.C.-D.C.
6-Tube All-Wave Chassis No. 5634
- RCA Victor
Model 261, 555 to 107 Meter
Model 38-116; Code 125
Stewart-Warner "Ferrodyne" Chassis Model R-136
Model 43OT 5-Tube 3-Band Superheterodyne
Victor Model C9-4 9-Tube 3-Band Superheterodyne
- Kennedy "Model
826B" Combination Receiver
50-A and 102-A
- Pilot Model
63 All-Wave 6-Tube Superheterodyne
No. 69 4-Tube All-Wave Superhet. Selector (Converter)
Victor Model 102 4-Tube A.C.-D.C. T.R.F. Receiver
- Bosch Models 60
Atwater Kent Models 30, 33, 35, 48 and 49
- Crosley Model
120 Senior Superheterodyne (Pliodynatron) Chassis
Columbia Screen-Grid 8 Receiver
General Electric Models A82 and A87, 8-Metal-Tube All-Wave A.C. Superhet.
31 and 32 D.C.
- Zenith 5-Tube
Triple-Wave Chassis nos. 5508 and 5509
- Remler Model
Electric FA-60 and FA-61
Model B-5 (715), Series 1 and 2 (Sheaffer Radio-Clock-Pen Desk Set)
Ford-Philco Car-Radio Models F-1440 and F-1442
Brunswick Model 31 Combination Radio and Panatrope
- Emerson Models
38, 42 and 49, 6-Tube Dual-Wave (Chassis U6)
General Motors Chevrolet No. 601574 Automotive
RCA Victor M-104 (and M-108) Automotive
Westinghouse Model WR 207 & WR 208 5-Tube Dual-Band Superheterodyne
"Super VIII" (AR-810, "Semi-Portable" (AR-812), 24 and 26
- Howard Model
45 A. V. C.
Galvin Motorola Model 61
Arvin Model 6
Models 7T06, 7T12
- Garod Model 5A1
- Hoffman Model A301
Knight Model E10716 Battery Portable
- Arvin Models 555,
555A, 552N, 552AN
- Grantline Models
- Truetone Model
- Belmont Model
- Arvin Models 444,
International Kadette Model 1019
Stewart-Warner Models 97-561 to 97-569
Electric Model 280
- Zenith Models 5R080,
- Truetone Models
Crosley Roamio Automotive T.R.F. Models 90, 91, 92
Crosley Roamio Automotive Superheterodyne Models 95, 96
Wells-Gardner Series 062
- Belmont Model
- Crosley Model
Models 507, 509, 518, 522, 535
- Garod Model 6AU-1
Electric Models 219, 202, 221
Crosley "Chairside" Model 567
Belmont Model 408 Battery "Farm"
- Wards Model
Models EK-081, EK-082, EK-083, EK-681
Model 200-X Radio
Admiral "Aeroscope" Models 161-5L, 162-5L and 163-5L
Model 59, 4-Tube A.C. Midget Superheterodyne
Farm Model 6V 27, 6-Tube Superhet
- Ward 10-Tube
All-Wave High-Fidelity Superhet, Series ODM
Westinghouse Model 175
- Crosley Model
- Philco Models
39 and 39A
Arvin Model 35 8-Tube Car-Radio
Air-Ace Series M
Models H-161, H-168, H-168A
- Garod Model 5A4
- Arvin Models 152T,
- Belmont Model 5240
- Mantola Models 92505,
- General Electric
Models 102, 102W, 107, 107W, 114, 114W, 115, 115W
- Crosley Model
- Crosley Model
- Crosley Model
Firestone-Stewart-Warner Model R1332
Model 81 "Farm" Set
- Clarion Model
423, 470, 471, 472, 480
International Radio Corp. Model 90
- Belmont Model
578 Series A