Waters Manufacturing Inc. 369A Other
Manufacturer:
Model:
369A
Date:
1967
Category:
Group:
Description:
Reflectometer

Information

The WATERS Model 369A REFLECTOMETER Is a dual Indicator voltage standing wave ratio measuring instrument for use with high frequency radio transmitters (3.5 - 30 MHz) to measure and indicate the impedance match between the RF transmission line and the antenna. Since the Model 369A REFLECTOMETER is equipped with a dual indicating meter, both the Forward and Reflected Power readings are displayed simultaneously. The power scales are directly calibrated in RF watts (at 50 ohms impedance), thus the REFLECTOMETER, in conjunction with a good 50 ohm Dummy Load, is also an accurate RF Wattmeter. In most applications of VSWR measurements, the user is primarily interested in readings approaching a 1:1 ratio. The Model 369A REFLECTOMETER, unlike most other equipments, provides a multiple choice of power scales which, in effect, increase the Reflected Power reading sensitivity by 10 times, thus permitting accurate determination of VSWR as low as 1.1:1. Single scale VSWR instruments simply cannot approach this low value with significant accuracy. The Model 369A REFLECTOMETER consists of two separate units, connected by a five conductor cable. The Indicator contains a dual movement power meter and range selector. The Directional Coupler is designed to be mounted remotely as the transmitter RF output terminal in series with a 50 ohm coaxial transmission line. Terminals on the Directional Coupler are BNC type (UG-1094/U), and two BNC to UHF adapters are furnished to permit use with the popular PL-259 connectors. For use with other types of connectors, standard in-line adapters are available commercially. No external power is required to operate the REFLECTOMETER, and its insertion loss is negligible.

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User Manual
Manual type:
User Manual
Pages:
11
Size:
1.11 Mbytes (1165054 Bytes)
Language:
english
Revision:
Manual ID:
M-A369-45/AA
Date:
Quality:
Scanned document, all readable.
Upload date:
31 July 2014
MD5:
e8fa41086810fbac307cb969724b427e
Downloads:
278

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