6600/Rev/Mar.2021
Page 9
Altronic Research Inc.
INTRODUCTION
This handbook was prepared for skilled personnel as an aid in understanding and performing
installation, service and maintenance procedures for the
OMEGALINE
Model 6600 Series
Coaxial Load. Personnel are considered to be skilled if they have the necessary knowledge and
practical experience of electrical and radio engineering to appreciate the various hazards that can
arise from working on radio transmitters, and to take appropriate precautions to ensure the safety
of personnel.
SECTION I
DESCRIPTION AND LEADING PARTICULARS
1-1. Purpose and Application of Equipment.
The OMEGALINE Model 6600 Series Coaxial
Loads are designed to safely dissipate 6,000, 12,000, and 20,000 watts maximum of
electrical energy over a frequency range of DC to 110 MHz.
1-2. Equipment Supplied.
The Model 6600 Series Coaxial Load is supplied with standard RF
connectors. Their designations are:
1-5/8" EIA Swivel flange:
Model # 6600E1
1-5/8" Unflanged flush:
Model # 6600F1
1-5/8" Unflanged recessed:
Model # 6600R1
3-1/8” EIA Swivel flange:
Model # 6600E3
Units purchased with fans have three terminal connections supplied for AC main power.
1-3.
Equipment Required But Not Supplied.
The Model 6600 Series Coaxial Load is
complete as supplied, but the user must furnish RF input, and alarm indicator cable. For
units purchased with fans the user must also supply interlock control cable, AC main power
and ground cable appropriate for each installation. A user supplied disconnect must be in
place before operating this load.
1-4. General Description.
The Model 6600 Series Coaxial Load is enclosed in a single
aluminum case which is painted with a durable acrylic finish. The RF connector is located
on the end panel of the load .
1-5. Mechanical Description.
The Model 6600 Series RF Coaxial Load is a 50 ohm non-
reactive resistor assembly which is cooled by ambient air. Units purchased with fans are
cooled by air forced through the resistor assembly by two 12-inch fans.
1-6. General Principle of Operation.
After ascertaining that the Model 6600 Series Coaxial
Load is correctly connected to the RF source and
the transmitter alarm,
operate transmitter
as desired. Units purchased with fans may be operated after ascertaining that the load is
connected to the correct power supply with a disconnect, connect the transmitter interlock
