Click on the schematic thumbnail to request the schematic as a free document.
Technical Specifications
Number of Transistors
Semiconductors present.
Semiconductors
Wave bands
Broadcast and Short Wave (SW).
Power type and voltage
Storage Battery for all (e.g. for car radios and amateur radios) / 22-36 Volt
Loudspeaker
- - No sound reproduction output.
Material
Metal case
from Radiomuseum.org
Model: Harris Automatic Antenna Coupler and Coupler Control RF-281 and RF-339 - RF Communications, Inc.;
Shape
Miscellaneous shapes - described under notes.
Dimensions (WHD)
17.25 x 12.85 x 7.45 inch / 438 x 326 x 189 mm
Notes
Suffix A designates a standard olive drab case as opposed to a gray case.
The RF-281 automatically matches the output of various 150 watt transceivers and transmitters to a variety of whip and long wire antennas over the frecuency range of 1.5 to 30 MHz. Operation is fully automatic, using the RF-339 to provide the necessary control and logic circuitry. Tuning time is typically seven to eight seconds.
Power requirements, size and weight filed are for RF-281.
Those for RF-339 are as follows:
Power: 115-230 Vac 50/60 Hz or 22 to 36 Vdc.
Size: 14.750 x 9.125 x 4.875 inches, including projections.
Weight: 9 pounds (4,08 Kg)
Net weight (2.2 lb = 1 kg)
25 lb 0 oz (25 lb) / 11.350 kg
Literature/Schematics (1)
-- Original-techn. papers.
Author
Model page created by Miguel Bravo-Cos. See "Data change" for further contributors.