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Transmitter 30FXB

Transmitter 30FXB; Collins Radio (ID = 2054988) Amateur-T Transmitter 30FXB; Collins Radio (ID = 2054989) Amateur-T
Transmitter 30FXB; Collins Radio (ID = 2054990) Amateur-T
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Transmitter 30FXB; Collins Radio (ID = 2054988) Amateur-T
Collins Radio: Transmitter 30FXB [Amateur-T] ID = 2054988 834x2100
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For model Transmitter 30FXB, Collins Radio Company; Cedar Rapids (IA):
QST September 1934
Country:  United States of America (USA)
Manufacturer / Brand:  Collins Radio Company; Cedar Rapids (IA)
Year: 1934–1936 Category: Amateur Transmitter (only)
Valves / Tubes 10: 47 46 46 203A_Power or 211 830B 830B 5Z3 866 866 45
Main principle Transmitter
Wave bands Short Wave (SW only)
Power type and voltage Alternating Current supply (AC) / 110 Volt
Loudspeaker - - No sound reproduction output.
Power out
from Model: Transmitter 30FXB - Collins Radio Company; Cedar
Material Metal case
Shape Rack
Dimensions (WHD) 20.5 x 60 x 20 inch / 521 x 1524 x 508 mm
Notes Collins 30FXB Transmitter: can be tuned in the range of 1,5 - 15 MHz included 160 - 20 m ham bands, CW (A1), AM (A3) 100 W.
Tubes used are 47 as oscillator tube, two 46 buffer (can be switched as doubler operation), a 203A or 211 as R-F power amplifier;
in the 7B speech amplifier, two 830B (alternatively 800 or 830) act as class B modulators;
in the integrated power supply 405C, a 5Z3 is used as low voltage recifier (400V B+), two 866 mercury rectifiers as high voltage rectifiers for B+ of 1000V (telephony) or 1250V (CW) operation, and a 45 as diode acting as keying rectifier.
The 30FXB replaced the 150 series transmitters and has been replaced by the 30FXC in 1936.
Source of data -- Original-techn. papers.

Model page created by Martin Bösch. See "Data change" for further contributors.

All listed radios etc. from Collins Radio Company; Cedar Rapids (IA)
Here you find 94 models, 69 with images and 33 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.