uv199.com

RCA UV-200 - Winged plate detectors

Including the UV-200, UX-200, UX-200-A, and UX-200-AA models


  • General Electric was the primary producer of UV-200 tubes
  • Westinghouse Lamp Company made a significant number of UV-200 tubes. Eventually I will create pages to cover Westinghouse seperately


The UV-200 detector poses the greatest challenge in identifying all of the variants, in order.

see Key Observations for evidence list used to date RCA tubes.

See RCA boxes for pictures of RCA 200 box styles.



UV-200 winged-plate variants (early):


R
C
A
UV-200
1
Tube
Globe (s-14) base style #1, tube-brass base, winged plate,ink-stamped, tipped envelope, cork wire separator, (RC/GE) etched, clear

UV-200 variant #1
 
 
    
RCA UV200 cork wire separator  
{v1} UV-200; BBTT, diagonal-cut wing plate, cork wire separator, and RC/GE logos engraved on envelope.











R
C
A
UV-200
2
Tube
Globe (s-14) base style #1, sheet-brass base, winged plate, ink-stamped, tipped envelope, glass rod wire-separators, (RC/GE) etched, clear

UV-200 variant 3
UV-200 variant #2
 
UV200 Single side plate cuts
Unusual cut patterns for wings suggest hand assembly
 
  
UV200 glass rod detail
{v2} UV-200; BBTT, diagonal-cut wing plate, glass rod separators, and RC/GE logos engraved on envelope.











R
C
A
UV-200
3
Tube
Globe (s-14) base style #1, sheet-brass base, winged plate, ink-stamped, tipped envelope, cotton wire separator, (RC/GE) etched, clear

UV200 variant #4
UV-200 variant #3
 
UV200 plate detail
Wing cuts become more regular as plates are cut automatically
 
UV200 base detail  
UV200 cotton wadding detail
{v3} UV-200; BBTT, diagonal-cut wing plate, cotton wire separator, and RC/GE logos engraved on envelope.













The push for factory mechanization
From this point forward (mid 1921?), we can assert that G.E. must have done everything possible to mechanize and streamline the production process, which was very costly. They realized they could skip the 'plug' of cork or cotton placed between the four lead wires as they fed out of the tube stem and into the socket pins. Maybe early base assembly left a risk of shorts, and this was seen to prevent them. 

Identification of the winged plate detector variations require careful inspection of the cuts made to construct the plate.

Angled cuts are earlier, done by hand, with notch cuts coming later. Machines were created to cut plates, reducing the inconsistencies introduced by hand work, increasing volume, and reducing labor costs.

Its also clear General Electric wasn't happy with the UV200/201 support mount designs from the beginning. These caused vibrations that created a terrible howl in receiving sets. The race was on to redesign the whole setup, which also allowed them to consider how the stamping and cutting machinery could be better leveraged.


UV-200 winged-plate variants (later):


R
C
A
UV-200
4
Tube
Globe (s-14) base style #1, sheet-brass base, winged plate - all four wings diagonal cut, ink-stamped, tipped envelope, no wire separators, (RC/GE) etched, clear {H-14}


unconfirmed variant.


R
C
A
UV-200
5
Tube
Globe (s-14) base style #1, sheet-brase base, winged plate - all four wings notch cut, ink-stamped, tipped envelope, no wire separators, (RC/GE) etched, clear {H-14, unmarked}

UV-200 variant #5
 
 
{v5} UV-200; BBTT, notched-wing plate with RC/GE logos engraved on envelope.












A new RCA logo


In August 1922, updates were made including a new 'RCA' logo 


RCA logo GE etching New RCA etching 

R
C
A
UV-200
7
Tube
Globe (s-14) base style #1, sheet-brass base, winged-notched plate, ink-stamped, tipped envelope, no wire separator, (new RCA logo/GE) etched, clear




The last of the winged plate detectors would be made no later than Aug 1923.


last updated 8-Dec-2018

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