Please click your language flag. Bitte Sprachflagge klicken.

History of the manufacturer  

Wireless Specialty Apparatus Co.; Boston (MA)

As a member you can upload pictures (but not single models please) and add text.
Both will display your name after an officer has activated your content, and will be displayed under «Further details ...» plus the text also in the forum.
Name: Wireless Specialty Apparatus Co.; Boston (MA)    (USA)  
Abbreviation: wirelesssp
Products: Model types Others

Wireless Specialty Apparatus Company; Boston, Massacussets.
Brand label of their condensers: "Faradon".

The Wireless Specialty Apparatus Company in Boston was a major manufacturer of commercial and military radio equipment from 1907 until sometime in the 1920's when it was absorbed into the RCA conglomerate.

Founded: 1907
Production: 1907 - 1919
The Wireless Specialty Apparatus Company (WSA) was formed in 1907 by Col.John Firth, Greenleaf W.Pickard, and Pickard's patent attorney, Philip Farnsworth.
It started with manufacture of Pickards Silicon and Pericon detectors (PERfect pIcKard cONtact). Pickard developed receivers like the IP76 around 1908.

There were not less than 21 Pickard patents, property of WSA, which covered, among others, circuit arrangements for crystal sets, crystal members, means for mounting of crystals and contacts and mechanism to permit the user's selection of contact points of the contacting conductor on the crystals. They covered also loop arrangements.
May 1, 1922 WSA published a series of advertisements and circulars which indicated that crystal radio receiving sets are controlled by patents owned by them.
The retailers should insist upon guarantees from other radio manufacturers, holding them (the dealer) harmless in case a suit was filed by WSA alleging patent infringement.
That prompted the forming of "Independent Radio Manufacturers, Inc." to fight WSA (under the lead of Freed Eisemann).

This manufacturer was suggested by John Koster.

Some models:
Country Year Name 1st Tube Notes
USA  10 Pickard Adjustable Telephone Receivers   Headphone telephone receivers for commercial wireless use.  With adjustable magnetic systems 
USA  19 Grid Leak Triode G   Grid leak of 500,000 Ohms, vacuum-impregnated, in Bakelite case. 
USA  19 Vacuum Tube Detector and Amplifier Triode A   Control box with valve detector and amplifier circuits. Separate rheostats and ammeters fo... 
USA  14 Galena Detector Pyron Type R   Galena detector for professional use. Détecteur à galène pour un usage professionnel. 
USA  19 Perikon Detector Type I-P 162 A    
USA  08 Silicon Detector I-P 49    
USA  13 Perikon Detector Base   Galvanized detector for professional use. See a full Perikon Detector with this devic... 
USA  09 Electrolytic Detector   Probably a prototype of a bakelite plate electrolytic detector. Probablement un prototy... 
USA  09 Perikon Detector Electra Type 109   Galenic detector. Détecteur à galène 
USA  18 Medium Wave Receiver SE-1220   SE-1220 Medium Wave radio receiver The SE-1220 was the military version of WSA's I... 
USA  19 Variable Air Condenser Type I-P-302   Wireless Specialty Variable Air Condenser Type-I-P-302 .0015 mfd capacity. 
USA  19 Variable Air Condenser Type I-P-300   Variable Air Condenser Type I-P-300 .005 mfd Condensateur variable de 0 à 5000 pF. T... 


Further details for this manufacturer by the members (rmfiorg):

October 1919 Radio News ad for Wireless Specialtytbn_wirelessspecialtyad.jpg
Published in the June, 1920 issue of the PROCEEDINGS OF THE INSTITUTE OF RADIO ENGINEERStbn_usa_wirelessspecialty_1920ad.jpg
Radio Broadcast, Apr. 1926, p. 703tbn_usa_wireless_specialty.jpg
Radio Broadcast, May 1926, p. 85tbn_usa_wireless_specialty_condenser_2.jpg