Wednesday, May 1, 2013

Personal Radios go off to War

By the number of page views this blog has seen recently, there seems to be a lot of interest in WWII and the part RCA radios played in it.   RCA was a big electronics contractor to the military during the war, but up until civilian radio production was halted in 1942 they sold their commercial radios as rapidly as they could build them.  The BP-10 personal radio was one product the public couldn’t seem to get enough of. 

The RCA personal radio (BP-10) had a special place in RCA’s preparation for the U.S. entry into the war.  The military draft was initiated in October of 1940.  By the end of the month the folks in the RCA Advertising Department were setting their sights on sales to draftees and new servicemen. 

The following is a text excerpt from an internal RCA Contact Report obtained from the Hagley Museum*.

Advertising Department Contact Report
Divison  INSTRUMENT                                              Date of Meeting October 31, 1940

Those Present   Messrs: Milling, Elliot, Finn Edgar, Ray, Bundle, Baggs

Subject Discussed  PERSONAL RADIO

Date of this Report  November 1, 1940

At a special meeting held in Mr. Finn’s office, special deals covering the Personal Radio (BP-10) for January (1941) were discussed.  The principal discussion centered around a possible package deal directed primarily at the draftee or other Arm or Navy personnel.  It was decided, after considerable discussion, to have a kit which would include the following.

(1)    Five silver gift boxes with a silver eagle insignia on the face of the box.**
(2)    An envelope which would include ten stickers of various branches of the Service, such as the Army, Navy, Marine and Air Corps which is given to the purchaser to stick over the eagle insignia on the gift box if he so desires.
(3)    A Window Streamer, featuring the decalcomanias and the insignia for the sets and calling attention to the fact that here is the ideal gift to send the boy, or sweetheart, who is going to the camp.
(4)    A second envelope in which would be included four embossed insignia which could be cemented on the face of the Pers9onal Radio set itself: 1 would designate the Army; 2 the Air Corp; 3 the Marine Corp; and 4 the Navy.
(5)    In order to attract attention to the possibility of the instrument as a gift for the military service man, a large display card would be prepared with the eagle insignia and suitable copy.
(6)    Five dial card inserts which will be prepared to fit inside the lid of the Personal Radio set will also be included in this kit.

This kit will be given away free to distributors ordering certain quantities of the instrument which the Sales Department will set.  A total of 5,000 kits are being ordered for this promotion as well as 5,000 additional gift boxes which we will sell to the dealers upon demand.

The decalcomanias or stickers as mentioned above, as Item 2, will also be made available for use with portable phonographs and portable radios.

* The former RCA Laboratory in central New Jersey, now called the David Sarnoff Center, for many years maintained a collection of RCA artifacts and records from decades of research, called the "David Sarnoff Library".  In 2009, some 3,000 boxes of the David Sarnoff library, RCA archives and records were moved to the Hagley Museum.  The Hagley Museum and Library, is a nonprofit organization, which collects, preserves, and interprets the history of American enterprise.

 **A few years ago, (as mentioned in the above contact report) one of the special gift boxes with the silver eagle on the cover was offered on eBay along with a BP-10 radio.  It definitely was a rare find for someone.

Wednesday, April 24, 2013

The RCA Personal Radio and WWII

War Changes Radio

World War Two changed how people used radio.  Radio portability was not too important until Herr Hitler started absorbing his neighbors.  Then everyone began listening to radio news to see who might be absorbed next.  The interest in the news sparked a desire to have a radio on hand at all times.  That meant portability.  Once the war started in earnest the demand for portable radios took a huge leap.  This was especially so in the UK.  In 1937 Pye Radio Works Ltd., a British company, sold a radio called the Baby Q. It was portable in that it had a handle and was powered by batteries.  It was not initially a great seller.  When the war began portable radios like the Baby Q were in short supply in UK, but were then definitely in demand. 

In the U.S. demand for portable radios developed a little slower.  The War news from Europe was not as big a draw for radio listeners until Herr Hitler seemed to be winning everywhere.  That occurred sometime in 1940.  Then the public wanted to listen to the radio almost every waking minute.  Portable radios quickly became very popular.   Although the suitcase size “picnic portables” were selling well by 1940, the public apparently wanted something more convenient.  That need was addressed by the small personal portable radios.  The RCA BP-10 was the first.  When introduced by in the summer of 1940 they were an instant success.

In 1940 there were about seven manufacturers of personal portable radios: RCA, Lafayette, Allied, Automatic, Sears, Sonora, and Westinghouse.  In 1941 the number ballooned to more than twenty.  Almost every major radio manufacturer offered a personal size portable radio.  Thanks to RCA’s miniature tubes (introduced in 1939), some radios were almost small enough to carry in a large pocket.  The Emerson model 432 and RCA model BP-10 were in this category.  Both were introduced in 1940.

Although the public started buying battery portable radios in a big way, many were reluctant to buy a radio that provided just fair performance even if the radio was cheap.  The 1941Consumers’ Research Bulletin, (forerunner of Consumers’ Report magazine) stated that, “The tone quality of all these sets is very poor, and other differences between the various models are slight, so that personal taste in the matter of appearance, the reception achieved, size, etc., is the basis almost as good as any for making a purchase.”   Apparently the rating agency did not consider easy portability and instant accessibility as important to the public.

Many radio manufacturers also didn’t get the point of a personal portable radio.  Some manufacturers made their portable radios smaller than table model sets, but didn’t try to reduce the size or weight to make their radios convenient to carry.  Some, like the 1940 Emerson model 379, did include a shoulder strap to ease the load.  Still, most of the portables of the late 1930s  and early 1940s were still just portable from place to place.  Despite some advertisements showing people carrying working portables, none were really designed to operate that way for very long (see ).

            A few manufactures did see the promise of personal portables and strived to make sets small enough to be carried in a purse or a rather large pocket.  Just before WWII Emerson, RCA, Motorola, and a few others were offering personal portables small enough to be carried and used just about anywhere.  The Emerson model 432, at just 80 cubic inches, was about the smallest full feature portable radio available prior to the war. 

The prewar personal portable radios were the true forerunners of today’s portable electronic revolution.  Sadly, not many survive.  Below is a photo of a typical BP-10 interior.  Note the rust.  Battery corrosion, humidity, and time have taken their toll.

Thursday, April 18, 2013

RCA BP-10 online resources

Although the RCA BP-10 is considered to be a pivotal item in the history of electronics, not much is in print regarding the history of the radio.  But, there are a few sources online. For example, there’s a lot of useful information regarding the RCA BP-10 on the Antique Radio Forum.  There are several posts to the forum discussing the BP-10.  One of the most informative seems to be at:

Sunday, March 31, 2013

The New (1940) RCA Personal Radio

Marketing the RCA Personal Radio

At the time of its introduction RCA didn’t realize the eventual impact of the BP-10 personal radio.  Although David Sarnoff (RCA CEO) was behind it, most within the company thought that the radio was of no importance to the radio industry nor would gain much public acceptance.  Apparently, they were wrong David Sarnoff was right, but not necessarily for RCA.

The following is an excerpt from an article entitled “Adventures in Marketing” which appeared on page 28 of the October 1945 issue of Radio Age magazine.  Radio Age was a quarterly magazine produced by RCA for RCA personnel as a source of information about activities within the company.

“A New Exploit in Marketing”

One of the greatest marketing exploits in radio occurred in 1940, when a group of RCA Victor merchandising men decided to ignore the results of a survey and market analysis. 

As early as 1922, David Sarnoff had instructed the RCA research staff to keep in mind the development of an individual portable radio receiver—one small enough to be carried like a camera. In 1940, the creation of miniature vacuum tubes and batteries, made this possible. Our engineers and designers came up with what is now universally known as the "Personal Radio". Merely lifting the lid causes it to operate; its tone quality is excellent.

But the marketing of this camera type radio receiver presented new problems. We had to sell at least 25,000 units to amortize the costs of plant tooling, and we had to price the set at approximately $20 retail.

No comparable radio product had ever been sold, so it was decided to run a market survey among dealers.  The results were almost completely negative. Dealers agreed that the set was smartly styled, but they said that it didn't look like $20," and that the public "wouldn't pay that much for it." It had only four tubes, whereas a five-tube table model receiver could be bought for as low as $9.95. As a result of the survey, we were led to believe that most radio dealers, being unaccustomed to this type of product, might not be the best outlets or it.

Merchandisers Held Faith

But the merchandising group at RCA Victor did not lose faith. Here is the way they looked at the "Personal Radio".
- It was new and novel.
- A demonstration created the desire to own one.
- It had a new and smart style, and could be featured in the most fashionable stores. Name personalities would be proud to own and use one, and their name or initials could be engraved upon its jewel box case.
- As a gift item, it was a natural.
- It appealed to the impulse buyer.
- It was easy to use, convenient to carry.

So the enthusiasm of our merchandising group won! A comprehensive program of manufacturer, distributor and dealer activity was developed to cover all phases of merchandising with intensive advertising, sales promotion, publicity and initial exploitation in the metropolitan New York market. A careful distribution of sets to radio artists, columnists, and leading stage and screen personalities resulted in an exceptionally fine reception. Lucky owners found themselves demonstrating the sets to their friends and acquaintances at home and in fashionable meeting places. Such ideas as the use of this set in the musical, "Walk with Music", playing on Broadway, resulted in extensive interest and comment. Magazine pictures revealed that one was on the President's desk in Washington.

Backed by a generous advertising budget, including full page advertisement in several New York papers, the sales campaign featured a broad scale tie-up at the New York World's Fair. Remarkably enough, less than half of the original advertising budget allocated for this campaign was used, yet the first 25,000 radios were sold out in the first thirty days. Retailers, who originally turned down the opportunity to buy jumped on the band-wagon and the rush was on. With such acceptance, the question arose as to the next market to be opened. It appeared that the one additional major field where we could fully capitalize on the initial momentum generated by the New York campaign was Hollywood.

By that time, the early enthusiasm had generated into company wide interest. RCA Victor executives were photographed in shirt sleeves loading the first freight cars for the Coast. The "red carpet" was out when the sets arrived in the West, and an intensive promotion campaign had been organized, in the best Hollywood manner. With the cooperation of the National Broadcasting Company and Warner Brothers, an exploitation campaign was started with practically every star on the Warner lot using this "Personal Radio" in still photographs for advertising and sales promotion. 

Instead of selling only 25,000 "Personal Radios" during two summer months, we sold more than 225,000 in six months. Faith in the product, backed by the imagination and drive engendered by faith, turned the trick.

Saturday, March 2, 2013

1940 RCA news release about the BP-10 radio

The following is the text of a November 1940 memo from Julius Haber (then the head of RCA’s Press Division, Camden, NJ) to the RCA advertising department regarding RCA’s new BP-10 Personal Radio.

From:                                                                                                 To:
Julius Haber                                                                            RCA Advertising
Press Division                                                                         November 1940
RCA Manufacturing Company                                              Release upon Receipt
Camden, New Jersey 


            The RCA Victor Personal Radio, object of the most enthusiastic buyer’s run in radio history, has at last achieved distribution throughout the country after unprecedented demand retarded its advance on new markets for several months.

            First announce in the New York area in June, the Personal Radio set up sales records in virtually every marketing area when it was introduced.  While buyers were still clamoring for it in New York, stocks in dealers’ hands on the west coast were exhausted in a matter of hours after its official debut in that area.  The same thing happened in Boston, Detroit, Cleveland, Chicago, Pittsburgh and an ever-lengthening chain of new markets.

RCA Manufacturing Company plants at Camden (New Jersey) and Bloomington (Indiana), are now operating every available facility at capacity to keep up with the continuing demand for the tiny instrument.  Deliveries are being made at present at a rate considerably above 500,000 sets a year.

            RCA dealers and distributors report a tremendous interest in the Personal Radio as a gift item.  Thousands of football enthusiast and followers of other sport have made it a “must” item for themselves.  New sales increases are evident as the Christmas season approaches.  Dealers tell of numerous “repeat” sales to owners presenting the tiny instrument to their friends

            The phenomenal public interest in the Personal Radio has been heightened by the enthusiasm with which well known figures in virtually every walk of life have publicized it.  Newspaper photographs of film and stage stars listening to the Personal Radio, and of prominent public officials such as Mayor La Guardia (New York) with it on their desk, has brought the utility of the instrument, and its truly “personal” character, home to the public.

RCA Victor dealers, as well as proprietors of various types of specially shops, have reaped the reward of newspaper advertising.  Ringing from lavish spread in New York Newspaper to clever mention in “persona” columns, the ads have pulled purchasers into stores by the thousand, all field reports indicate.

            Extensive space is being devoted to promoting the Personal Radio in nationally circulated magazines during December.  A four-color double-spread in Life will give the instrument prominent mention, as will full page ads in Look and Esquire in December.

Saturday, January 5, 2013

RCA and the BP-10 Personal Radio

By TinkerTom
The Beginning
Before there were iPods, Game Boys, or even transistor radios the dream of personal portable entertainment was just that, a dream, until 1940.  That was the year the Radio Corporation of America, better known as RCA, introduced the first mass produced personal portable radio. Yes, there were “portable radios” as far back as the early 1920s.  But, most were as large as a suitcase, heavy, and only nominally portable.   There were portable phonographs too.  But, they were only designed to be carried from place to place.  No one had figured out how to reliably spin a record while walking along.1

Since the 1920s many attempts had been made to produce and sell a truly portable radio.   Although there was obviously a demand for portable entertainment, the early “portable radios” didn’t satisfy it.   Most attempts failed in the market place because the necessary technology simply didn’t exist.  Consequently, by 1937 not a single major radio manufacturer offered a battery powered portable radio. 2

One missing technological item to make a hand held portable radio practical was a set of compact low power vacuum tubes.  In 1938 the RCA began the development of low power miniature tubes with the specific intention of producing a truly personal portable radio.3  The result was the RCA BP-10.  The BP-10 radio was introduced nationally in the summer of 1940 and was produced continuously until civilian radio production ceased for the duration of WWII (April 1942).4  The radio was a runaway sensation with over 200,000 sold.5   Few radio models were as well received by the public and as well documented by the manufacturer.

Figure 1. The 1940 RCA BP-10 Personal Radio

In 1940 and 1941 other radio manufacturers produced portable radios using RCA’s new miniature tubes.  Sonora Inc., a small radio manufacturer, introduced their “Candid” miniature tube radio in April 1940.6 Sonora also supplied an identical radio to Allied Radio, which sold it under their Knight brand as the B10506.  Sonora’s Candid is often credited with beating RCA’s introduction of the RCA BP-10 radio by a few months even though Sonora’s miniature tubes came from RCA.7   But RCA had years to work with their new tubes on the BP-10 design prior to the Sonora introduction.  It’s apparent from a Lord & Thomas merchandising plan that the BP-10 was in existence by at least March 14, 1940.8   RCA was simply taking some time to develop a block buster merchandising campaign that Sonora couldn’t hope to match.

Figure 2. The Knight Model B10506 Essentially Identical to the Sonora Candid Radio

 Actually, the BP-10 radio was ready for test marketing very early in 1940.  Many months prior to the Sonora radio introduction a prototype BP-10 was publicly demonstrated at the 1939 New York Worlds Fair.9  Fair goers were enthusiastic about the radio, but formal introduction was delayed until June 1940.10  It’s possible, that because of Fair goer enthusiasm, RCA delayed introduction to allow increased production in anticipation of higher demand.

Even if Sonora can be credited with beating RCA to the market with their miniature tube radio, Sonora cannot be credited with producing a truly personal radio.  Although the Sonora Candid radio used the RCA miniature tubes, Sonora made little effort to reduce the size to much less than radios using full size tubes.11 The BP-10 was the first truly personal portable radio designed to be carried by one person in a coat pocket or purse, but definitely a large pocket or purse.12 It was only a quarter pound lighter than the Sonora Candid, but much smaller overall.  The BP-10 was also much more compact than the bulky suit case size portable radio RCA sold in 1939 (see Figure 3.)  In addition to its small size it had a novel feature that enhanced its ability to be carried in a pocket or purse.   When not in use, the combination antenna/cover closed to protect the speaker, controls and front panel.  

Figure 3.  RCA 1939 “Pick me Up” Portable on the left and the 1940 RCA “Personal Portable” on the right

Table 1.  Some Pre-war Personal Size Portable Radios using Miniature Tubes
Weight (pounds)
volume (in3 )
BP-10 “Personal”
June 1940
KG-80 “Candid”
April 1940
45 “Commuter”
Late 1940
Series 33
G. M.
A1 “Playboy”
~ 4.0
4K600 “Poketradio”
~ 4.0
432 “Power Mite”
General Electric
JB-410 “Carryabout”
October 1940

Although RCA produced the first personal portable radio in 1940, this idea was fairly common many years before.  Even as early as 1904 the eccentric inventor, Nikola Tesla flirted with the idea of a pocket carried radio receiver.13   But it was really, David Sarnoff, chief executive and for many years the driving force behind RCA, who believed that there was a strong market for a small portable radio.  He wanted a radio that could be carried and enjoyed by one person, i.e., a personal portable radio or a “radio music box” as he called it in a 1922 letter.14  And, as chief executive of RCA he was in a position to make his “radio music box” happen. 

As mentioned, RCA engineers designed the BP-10 and introduced it to the public at the 1939 World’s Fair.  According to an RCA radio demonstrator at the fair, the BP-10 prototype “enthralled the public”.15  Unfortunately, its introduction was overshadowed by the premier of RCA’s all electronic television at the Fair.  RCA’s David Sarnoff opened the RCA pavilion on April 20, 1939 with an address specifically touting television as adding sight to sound.  Fair goers flocked to the RCA pavilion to see and be seen on television.   With all the television excitement, the BP-10 radio introduction was largely forgotten.  

The huge research effort to develop electronic television encouraged RCA to create a permanent research facility, and when World War II threatened, RCA had an extra incentive to do so.   On November 15, 1941, a dedication ceremony was held for RCA’s new Research Laboratory in Princeton, New Jersey.  This time the BP-10 radio was not forgotten.  Photos at the time showed the RCA Victor Model BP-10 as one of the items and the only radio encapsulated in the RCA Research Center cornerstone16.  

The Marketing
Because of RCA’s extensive marketing the history of the BP-10 radio is probably one of the best documented of all radios ever produced.  In early 1940, RCA asked the prestigious advertising firm of Lord & Thomas to prepare a preliminary merchandising and advertising plan for the BP-10.   As part of the plan Lord & Thomas asked a number of people to select a name for the BP-10 radio from a list of 115 possible names suggested by the firm.  Although Lord & Thomas referred to the BP-10 in their plan as the “Pockette Radio”, no consensus was reached on a name.  Consequently, RCA did not assign a name to the radio in their advertisements other than “Personal Radio”.17

Although other radio manufacturers used the phrase “personal radio” in their 1930s advertisements, it was RCA who popularized the phrase.   Several small AC radios made by RCA were advertised as “personal radios” as early as 1933, but the BP-10 advertising of 1940 used the phrase extensively.   RCA even offered placement of the owner’s initials on the front of the BP-10 to really “personalize” the radio.   The BP-10 was the height of portable personal entertainment, as David Sarnoff had intended.

In 1940 the usual procedure for a new product prior to national advertising was to perform test acceptance in a trial marketing area.  New products were typically introduced into key market areas, then the markets expanded as the product met public acceptance.  The BP-10 was first advertised in the New York market during June 1940.  Its introductory advertising was through newspapers ads and tie-ins to the 1939 New York Worlds Fair.  It was quite a hit. The initial acceptance was described in an internal RCA memo as being “….the most enthusiastic buyer’s rush in radio history”.  An initial 25,000 BP-10s were sold in the first thirty days of sale.18  

Movie stars, such as Pat O’Brien, Jane Wyman, Andy Devine, and Fred McMurray were photographed together with a BP-10 radio.  Walter Winchell mentioned it in his newspaper column. Advertisements for the BP-10 appeared in Life, Collier’s, the Saturday Evening Post, Time, New Yorker, Red Book, Esquire, Cosmopolitan, and many other magazines. Advertisements also appeared in all the major national newspapers.  Major outlets other than radio shops featured the radio including Bloomingdales, Abercrombie & Fitch, and lots more.20

 The intense public interest in portable radios during 1939 and 1940 was motivated somewhat by the outbreak of war in Europe.  The portable radio allowed a radio listener to monitor the war news no matter where he or she was.  For example, a BP-10 radio was even photographed on President Franklin Roosevelt’s desk.  FDR undoubtedly was one of those very interested in monitoring the war news.21

Due to the threat of war, the military draft began in October 1940.  By the early summer of 1941, President Franklin Roosevelt asked the U.S. Congress to extend the term of duty for the draftees beyond twelve months.  As one of the most easily carried pre-war radios, many BP-10s were given as gifts to newly inducted servicemen.  And, RCA made a concerted effort to interest the servicemen in the BP-10.  In January 1941, BP-10 radios were offered in special silver boxes with an eagle on the face of the box and a set of decals, one for each branch of the service.22

The BP-10 radio was powered only by batteries.   This might have been a reason not to take the radio to their military posts due to the war time battery shortage.   Consequently, many left behind BP-10s survived in dresser draws and closets.  On the other hand, those servicemen who took their personal radio with them were inclined to save them as mementos of their war service.  So, some of those radios survived as well.    But, time has taken its toll.  Many of the BP-10s were stored with the batteries still in place.  Prewar carbon zinc batteries eventually split and oozed acid into the radio.  The acid often destroyed the thin steel chassis as well as wiring and other components.  Most BP-10s turn up with some sort of battery damage. 

The Radio
Stylistically the BP-10 is a true example of art deco design.  The chrome face horizontal lines, black plastic cover, and leather like veneer gave it the appearance of a camera of that era.  In fact it was sometimes referred to as a “camera construction” portable radio23.  

Figure 4.  Early Version BP-10 with the cover closed shown with a D cell for scale

Electrically the BP-10 is rather conventional.  The only significant innovations of note are the use of small ferrite loaded IF transformers and a 67.5 Volt battery developed specifically for the BP-10 radio.  The BP-10 has four miniature tubes in a superheterodyne circuit driving a small (three inch) speaker.  The speaker was initially a conventional round speaker, but later versions utilized a novel oval speaker.  The oval speaker seems to have better tonal qualities.   The BP-10’s performance is good for a radio of this vintage, but not spectacular.  

The true innovations were primarily mechanical.  The use of miniature tubes allowed the RCA designers the ability to reduce the size of the radio so that it could be easily held in one hand. 
Because 1940 plastic was not up to much physical abuse the radio body was steel.  The antenna could not be placed inside the steel body, so styrene plastic was used as a cover for the speaker and front panel.  This allowed a loop antenna to be sandwiched within the plastic cover.  To ensure that the lid was moved away from the metal body when playing, the cover was hinged.  When the hinged plastic cover was opened the radio was activated similar to a music box.  This music box configuration didn’t allow operation of the radio with the cover closed.  But, it did insure that the plastic cover was flush with the body, thus minimizing the chance of damage to the speaker or controls.  When the cover was closed, it guaranteed that the radio was truly turned off which also helped conserve battery life. The music box design became so popular that many other radio manufacturers adopted it and sold portable radios of this type up through the early 1950s.  

The plastic of the early 1940’s was not the wonderful stuff we have today.  It was easily damaged.  As a result, BP-10s are often found with some damage to the plastic cover.  The most prevalent damage is at the cover hinges.  RCA initially introduced the initial BP-10s without a hinge stop.  The result was cracked covers near the hinges.  By February 1941 the BP-10 was shown in advertisements with a hinge stop on the left hand side of the cover.  These models seem to have BA or BD as a prefix to the serial number.

Figure 5.  The Hinge Stop added some time in late 1940

There appears to be several versions of the BP-10 radio.  The earliest version had no hinge stop to hold the cover open and used a standard 3 inch round speaker.  Their serial numbers had no alphabetic prefix.  The second version, beginning around January 1941, had a hinge stop.  Their serial numbers began with BA- followed by a sequential serial number.   The third version had both a hinge stop and an oval three inch speaker in place of the original round speaker.  Their serial numbers began with BD- followed by a sequential serial number.   

Figure 6.  Two BP-10 Chassis showing early round (bottom) and late oval (top) speaker openings

The BP-10 was assembled at RCA’s Camden plant and their Bloomington, Indiana plant.24 Although not confirmed, those assembled at the Bloomington had the letter “B” stamped or written near the serial number.  During 1940 and 1941 exactly 200,042 BP-10s were produced, with 9,842 following in 1942.25  How many were produced at each plant is unknown.

Figure 7.  A Bottom BP-10 cover showing early Camden, NJ labels
The Significance

The functions of today’s portable personal electronic devices can basically be placed in three categories: communicating, entertaining, and data processing.  An argument for a fourth category can be made for medicating, which might include hearing aids, pacemakers, etc.  Of course, the BP-10 can be considered the starting point for just about every personal portable entertainment device.  Even CD players, hand-held games, and IPods owe their lineage to the BP-10.
Other portable personal electronic devices quickly followed the introduction of the BP-10.  The famous WWII handie-talkie was arguably the first personal portable communications device.  It was developed by the company that became Motorola and was designed around essentially the same RCA tubes as in the BP-10.  In their 1995 cellular telephone advertisement Motorola recognized the handie-talkie (BC-611) as the “grandfather” of the personal cellular telephone.

Personal portable data processing devices took a bit longer to reach the market.  It wasn’t until the invention of integrated circuits that a portable four function calculator could be offered to the public.  That didn’t occur until 1965.  By the late 1970’s many personal portable entertainment, communication, and data processing devices were readily available.  Over time the devices have become smaller, less expensive, and multifunctional.   Today, it’s possible to buy a personal portable device like the Apple iPhone that combines entertainment, communication, data processing in a single package.  The iPhone package is so small that it readily fits in a shirt pocket or tiny purse.  And all this started with Mr. Sarnoff’s BP-10 radio.

Figure 8.  A WWII Handie-Talkie in use26

Unlike thousands of radios offered in the 1930s and 40s, the history of the RCA BP-10 is well documented.  The BP-10 is a historically significant radio and can be considered one of the most technically influential electronic products of the 20th century.  It exemplified the concept of a portable entertainment device optimized for use by a single person.  As mentioned, it was even designed so that the owner’s initial could be added to the front panel.  Many surviving examples are so initialed.   
Transistor radio collectors are very familiar with the Regency TR-1, the first commercial transistor radio.  But, few collectors remember that personal portable electronics really started with the BP-10 radio.   Although the Regency TR-1 transistor radio was a personal sized radio, it was not the first mass produced personal radio.  RCA’s BP-10 holds that distinction outselling the TR-1 two to one.   
The following points recap some of the reasons why the RCA BP-10 Personal Radio can be considered a historically significant product:
·         It was the first hand held portable radio capable of performance comparable to a table model radio.
·         It was the first radio designed specifically to be personalized and carried in a coat pocket. 
·         It was a radio initially envisioned and commissioned by David Sarnoff as head of RCA. 
·          It was introduced to the public at the legendary 1939 New York World’s Fair (Theme: "Building the World of Tomorrow"). 
·         It was an excellent example of art deco styling.
·         In 1942 it was the only radio RCA placed in the cornerstone of the new RCA Research and Development Center.
·         It was a very popular radio in general use prior to WWII and was carried to war postings by many newly minted servicemen.
·         It appeared in several plays and films such as the 1940 Broadway play as “I walk with Music” and Ken Burn’s 2007 film WWII documentary “The War.”27  

1   Warnagiris, T., “Radio Wherever I go”, Antique Radio Classified, February 2011, Vol. 28, No. 2,   p11
2        Schiffer, Michael Brian, The Portable Radio in America, 1991, The University of Arizona Press, Tucson & London, 83 & 111
3        “Miniature Radio Tubes”, Radio Age, Radio Corporation of America, New York, NY, April 1945, 19
4        “BP-10”, Hagley Museum, folder in box 7/5 of the RCA collection, received Oct. 2010
5        “BP-10”, Hagley Museum,  RCA collection box 7/5
6        Arnold, Richard, “Sonora's First Plastic Portable Radios The Sensational Candid”, Antique Radio Classified,  July 2008,
7        Arnold, Richard, “Sonora's First Plastic Portable Radios The Sensational Candid”
8        Merchandising and Advertising Plans for RCA Victor “Pockette” Radio, Lord & Thomas Inc, March 14, 1940, Chicago, IL, 2
9        Nauck, Kurt, “The RCA 1939 Portable Prototype”, Antique Radio Classified, December 1990, 12
10    “New RCA Personal Radio Achieves National Sales” RCA New Release, Nov. 1940, Hagley Museum,  folder in box 10/22 of the RCA collection, received Oct. 2010
11    Arnold, Richard, “Sonora's First Plastic Portable Radios The Sensational Candid”
12    RCA Victor Personal Radio Model PB-10 advertisement, 1940, Hagley Museum,  folder in box 10/22 of the RCA collection, received Oct. 2010
13    Lyons, Eugene, David Sarnoff a Biography, 1966, Harper and Row, New York, NY. 71
14    Lyons, Eugene, 123
15    Nauck, Kurt, 12
16    Magoun, Alexander B., David Sarnoff Research Center: RCA Labs to Sarnoff Corporation, 1981. Arcadia Publishing, 14
17    Merchandising and Advertising Plans for RCA Victor “Pockette” Radio, Lord & Thomas Inc, March 14, 1940, Chicago, IL, 3
18    Schiffer, Michael Brian, 103
19    RCA Victor Personal Radio Model PB-10 advertisement, Life magazine, May 12, 1941, 81 and Hagley Museum,  folder in box 10/22
20    Hagley Museum,  RCA collection, folder in box 10/22
21    “A New Exploit in Marketing”, Radio Age, Radio Corporation of America, New York, NY, January 1948, p. 28
22    Advertising Department Contact Report, Nov 1, 1940, RCA Personal Radio meeting minutes, Meeting date: October 31, 1940, Hagley Museum,  RCA collection folder in box 10/22
23     RCA Victor Personal Radio Model BP-10 advertisement, 1940, Hagley Museum, 
24    “New RCA Personal Radio Achieves National Sales” RCA News Release, Nov. 1940
25    “BP-10”, Hagley Museum,  RCA collection box 7/5
26    TM11-235, War Department Technical Manual, Radio Sets SCR-536, A, B, C, D, and F, War Department, May 1945, 18
27    Burns, Ken,  2007 film documentary, “The War”  Episode 1