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The 1T4 is a miniature screened pentode for dry battery operation. It was designed for radio reception and is a variable μ RF device. This valve was purchased new in 1963 to build a one valve broadcast receiver.


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1T4 r.f. pentode is used as a regenerative screen grid detector and a 1S4 as a power output pentode. This arrangement affords quite a healthy wallop in the ...


1
This is a two tube regen or regenerative receiver: one 1T4 detector and one 3V4 audio amplifier. All of this is accomplished with two plug in RF coils.


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The DF91 is a is a miniature screened pentode for dry battery operation. It was designed for broadcast radio reception and is a variable μ RF device. See also 1T4


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1/18/2009 · This is a one valve ... the 1T4. This valve was used extensively in radio equipment during the second world war and was widely available for a few pence ...


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Tube 1T4 or Röhre 1T4 ID429, Vacuum Pentode, Miniatur-7-Pin-Base B7G, USA 1940 and RF/IF-Stage shown. Radio tubes are valves.


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Tube DF 91 or Röhre DF91 ID434, Vacuum ... DF91 = 1T4 = W17 = 1K2 ... You reach this tube or valve page from a search after clicking the "tubes" tab or by clicking a ...


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Find great deals on eBay for df91 valve. Shop with confidence.


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This is my homemade 2- 1t4 tube radio page. The first tube is an rf amplifier, and the second tube is the detector. My little project is based …


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This, together with the valve, was displayed proudly on the top face of the chassis. The valve was specified as 1T4 or DF91, with ...


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This, together with the valve, was displayed proudly on the top face of the chassis. The valve was specified as 1T4 or DF91, with ...


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Find great deals on eBay for 1t4 tube. Shop with confidence.


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Bold designators are close or identical, Italic designators are different ratings, different pinouts or different filament voltages. Please see …


537
Find great deals on eBay for 1t4 vacuum tube. Shop with confidence.


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Vacuum tube equivalents - equivalents for thermionic valve or vacuum tube substitution or replacement including the diode, ... CV785, 1F3, 1T4 : DF96 : 1AJ4, 1F1 : DK91


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A site for the novice or established collector/restorer of Vintage Radio sets and Electronics.Valve (tube) and Transistor with information/projects and technical help .


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Last Update 28 Apr 2008 Radio Constructors Circuit Archive Valve TRF All pages open in new windows. Please turn off any Pop Up stoppers.


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This is my homemade shortwave tube shortwave radio page. The 1T4 miniature tube has been the mainstay of the homemade radio builder for over half a …


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Miniature Tubes. Here is a list of ... The RCA BP10 was one the first of the B7G based Miniature valve radio sets, ... (1R5 – 1T4 – 1S5 – 1S4 or 3S4 )


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Quality miniature glass 7-pin entode tubes manufactured by Philips in Holland. These variable-mu pentodes are designesd for use as RF