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Dual Channel Final RF Transmitter 1004-1

Dual Channel Final RF Transmitter 1004-1; Collins Radio (ID = 2337042) Commercial Tr Dual Channel Final RF Transmitter 1004-1; Collins Radio (ID = 2337043) Commercial Tr
Dual Channel Final RF Transmitter 1004-1; Collins Radio (ID = 2337044) Commercial Tr Dual Channel Final RF Transmitter 1004-1; Collins Radio (ID = 2337045) Commercial Tr
Dual Channel Final RF Transmitter 1004-1; Collins Radio (ID = 2337046) Commercial Tr Dual Channel Final RF Transmitter 1004-1; Collins Radio (ID = 2337047) Commercial Tr
Dual Channel Final RF Transmitter 1004-1; Collins Radio (ID = 2337041) Commercial Tr
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Dual Channel Final RF Transmitter 1004-1; Collins Radio (ID = 2337042) Commercial Tr
Collins Radio: Dual Channel Final RF Transmitter 1004-1 [Commercial Tr] ID = 2337042 950x2100
Select picture or schematic to display from thumbnails on the right and click for download.
For model Dual Channel Final RF Transmitter 1004-1, Collins Radio Company; Cedar Rapids (IA)
 
Country:  United States of America (USA)
Manufacturer / Brand:  Collins Radio Company; Cedar Rapids (IA)
Year: 1940 ? Category: Commercial Transmitter (TX not Transceiver)
Valves / Tubes 10: 837 837 807 807 813 813 450TL 450TL 450TL 450TL
Main principle Transmitter
Wave bands Wave Bands given in the notes.
Details
Power type and voltage Powered by external power supply or a main unit.
Loudspeaker - This model requires external speaker(s).
Power out
from Radiomuseum.org Model: Dual Channel Final RF Transmitter 1004-1 - Collins Radio Company; Cedar
Material Metal case
Shape Boatanchor (heavy military or commercial set).
Notes

Circa 1940 Collins model 1004-1(serial #7417-1) Dual Channel RF Final Transmitter, originally built for Northwest Airlines. 

The pictured schematic is for one channel, the second channel is identical:  One 1100A-1, one 33M-1 and one Filament Transformer Unit

This model 1004-1 Dual Channel RF Final Transmitter Bay consists of:
2 model 1100A-1(serial #s 6405-4, 6405-8) RF Final Units with two 450TL tubes in each unit
2 model 33M-1(serial #s 7472-8, 7727-1) Exciter Units with one 813 (intermediate amp), one 807 (frequency doubler) and 1 837 (oscillator/multiplier) tubes in each unit. It includes a 3.39MHZ crystal.
2 Filament Transformer Units with 2 transformers in each unit (item 11, 12 on pictured schematic)
2 Dayton timers
1 model 199A-1 (serial #6859-22) Blower
1 Haydon hour meter

This was originally a part of a Collins model 1000B-4, a 3KW/10-channel (CW) or 2.5KW/5-channel (AM) Transmitter.  It could transmit 2.5MhZ to 20MHZ.  It consisted of five 6' tall "Bays"(cabinets), and one 3' tall separate "Unit".
 
The model entire 1000B-4 Transmitter consisted of:
3 model 1004-1 Dual Channel RF Bays
1 model 1003-4 Modulator Bay
1 model 1002-4 Power Bay
1 model 404B-2 Power and Relay Unit

Model page created by Pavek Museum. 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.




  
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