HISTORIC TRANSISTOR HOBBYIST SUPPLIES!
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Authentic
Supplies for the Transistor Historian
and
Kit Builder.
Available
Only from the TransistorMuseum™
All
Transistors Tested
Before
Shipment.
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Historical Background
Raytheon was the most successful of the early
commercial transistor companies. By
1952, Raytheon had established a thriving, high volume germanium diode
business, so the fundamentals for transistor business were in place. In addition, Raytheon was the leading
supplier of subminiature hearing aid tubes, and this market was ready-made
for the new transistor technology.
By mid 1954, Raytheon had manufactured over 1,000,000 germanium
transistors, which was more than all other commercial companies combined. These early germanium transistors were
made with black epoxy cases; examples are the CK718 (hearing aid
transistor) and the CK721/CK722 (hobbyist transistors). The epoxy case
proved somewhat unreliable, so Raytheon began using a metal case for all
transistors in 1955. The first
metal cased units were painted a beautiful iridescent blue color. This
distinctive approach lasted until the late 1950s, and established a unique
and historic milestone in the first decade of transistor history. If you were a radio-electronics
enthusiast in the 1950s, it is likely that you remember your first
“Raytheon Blue”.
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“RAYTHEON BLUES” TRANSISTOR
Germanium PNP Alloy
Junction Transistor
Raytheon Type (Blues)
Vintage
1950s
Use:
Radios, Hearing Aids
And
Hobbyist
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Your TransistorMuseum™
Order Will Contain:
One
Tested “Raytheon Blue”
Germanium PNP
Alloy
Junction Transistor
(Range
of Case Styles Shown Above, with an Historical Range of Model Numbers)
Hobbyist
Insert Depicting the Historical Importance of this Classic Transistor,
Includes a Schematic of an Early Transistor Audio Circuit Using the
“Ratheon Blue” Technology
A
TransistorMuseum™ Classic
Semiconductor
Storage
and Display Envelope
Learn
All about the “Raytheon Blues” at:
http://www.transistormuseum.com
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ORDER NOW
$20 per Package (One Transistor)
Includes
Shipping Within U.S.
Email
me at
transistormuseum@aol.com
To
Determine Payments Options
(Paypal
or Check)
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COPYRIGHT © 2005
By Jack Ward
All Rights
Reserved.
http://www.transistormuseum.com
Your “Raytheon Blue”
Transistor Order Will be Supplied in the Storage/Display Envelope Shown at
Left, which Includes an Insert with Historical Description and a Schematic.
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