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Signal Tracer 33

Signal Tracer 33; National Radio (ID = 1584315) Equipment
Signal Tracer 33; National Radio (ID = 1584299) Equipment
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Signal Tracer 33; National Radio (ID = 1584299) Equipment
National Radio: Signal Tracer 33 [Equipment] ID = 1584299 933x921
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For model Signal Tracer 33, National Radio Institute (NRI); Washington, DC:
From Oct-Nov 1948 National Radio News (NRI)
 
Country:  United States of America (USA)
Manufacturer / Brand:  National Radio Institute (NRI); Washington, DC
Year: 1947 ? Category: Service- or Lab Equipment
Valves / Tubes 6: 6SK7 6SK7 6K6G 6SQ7 6E5 5Y3G
Main principle TRF (Tuned-Radio-Frequency but use of regeneration unknown); 2 AF stage(s)
Wave bands - without
Details
Power type and voltage Alternating Current supply (AC) / 110 - 120 Volt
Loudspeaker Electro Magnetic Dynamic LS (moving-coil with field excitation coil) / Ø 5 inch = 12.7 cm
Power out
from Radiomuseum.org Model: Signal Tracer 33 - National Radio Institute NRI;
Material Metal case
Shape Tablemodel, slant panel.
Dimensions (WHD) 12 x 10.25 x 8.25 inch / 305 x 260 x 210 mm
Notes

Covers 170 kHz to 11,3 MHz in four ranges.
Band A: 170 - 490 kHz
Band B: 490 - 1470 kHz
Band C: 1470 kHz - 3.9 MHz
Band D: 3.8 - 11.3 MHz

Advertised in NRI National Radio News Oct - Nov  1948.

Input probe capacitance only 2pF.

Maroon crackle finish.

Net weight (2.2 lb = 1 kg) 15 lb (15 lb 0 oz) / 6.810 kg
Price in first year of sale 52.00 USD
Literature/Schematics (1) -- Original-techn. papers.

Model page created by a member from A. See "Data change" for further contributors.



All listed radios etc. from National Radio Institute (NRI); Washington, DC
Here you find 19 models, 19 with images and 6 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.



  
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