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(!!!!) (Premium 211 Sub = 38111A) USN-CRC-38111A=835 RCA NOS 1936 original boxes - very rare (1st version of the 211 ever made)

$ 2,933.33

1 pair) USN-CRC-38111A=835 RCA NOS 1936 original boxes (Contract # 42717: June 17th, 1935) square "flat foil" getters (very rare) tubes are in excellent condition - tested in 1940 and 2019

1 tube) Serial #33435 (May 4th, 1936) 

118.4ma Gm=4550

1 tube) Serial #52744 (June 23rd, 1936)

111.2ma Gm=4070

 

- 38111A was made for the Navy, designed for crystal oscillators

- 1st version of the 211 ever made 

- Lower Capacitance than any other 211 ever made

- Sonics exceed standard 211 RCA

 

Vplate=500V

Vgrid=-1V

Good Ma range 100-120ma

Good Gm = 3600

 

HISTORY

835 is a low capacitance 211 and often branded US Navy 38111A

Very Rare, top-rated

 

Recommended for

Air Tight ATM-211

Cary 805

Navison

Cyber Consanance

Ongaku

Tektron

Tron

Jolida JD-3000A

NAT Audio Se1, Se2Se, Se3 (Serbia)

Wyetech

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