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Important
Information
for your
data files -
PRD REPORTS
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PRD DRY -TYPE LOW -LEVEL
MICROWAVE CALORIMETER
Invaluable for any precise low
level measurement or power
monitoring in systems. Unique,
because it measures low microwave
power with primary standard
accuracy by means of thermocouples.
No troubles with
fluids, pumps or thermometers.
Easy to use, accurate, rugged
and reliable. Indicates average power regardless of modulation.
Provision for null indication against standard do power.
TYPE 666 FREQUENCY RANGE 18 to over 75 kmc /s ERROR: Because
the intrinsic error is less than i- 1 % plus ±20 uw thermal drift, the
combined error including instrumentation can be held to within ±3 %.
Good approximations can be achieved within one time constant (1.5 to
2 minutes) POWER RANGE: From 30 µw to at least 1 watt cw
SENSITIVITY: 35.40 av /mw (calibrated for each instrument) MAX.
VSWR: less than 1.2.
PRO HETERODYNE
FREQUENCY METER
Especially useful for
precision measurements
of microwave
frequencies where
accuracy combined
with range is required.
Takes the
place of several
cavity type meters
each of which usually has a more restricted frequency
range. Unlike other heterodyne frequency meters, Type
504 is simple to use. Both CRT and aural presentation are
available as well as a new exclusive interpolating dial
which saves time and avoids ambiguity. Lightweight,
therefore advantageous for field testing of transmitters,
receivers and signal generators. Will deliver a signal of
precisely known frequency at the RF input connector
when used as a calibrating instrument.
1 -1 A Wideband sweep
Generator for Both
VHF and UHF Television
1 -2 Ridged Waveguide
--A Transmission System
for a Wider Frequency
Range
1.3 Metallized Glass
Microwave Attenuators
1 -4 Microwave Power
Measurements
2-1 Noise Figure and
Some Measurement
Aspects
2 -2 Frequency Measurement
Devices
2-3 Precision Measurements
with
Slotted Sections
2.4 Impedance Considerations
in Crystal
Mixers and Their Application
to UHF Tuner
Design
3 -1 Microwave Detectors
for Measurements
of Relative Power
Levels
3-2 Impedance Measurements
in the 50-
1000 MC. SEC Range
with a New Standing
Wave Indicator
4-1 Microwave Attenuation
Measurements
4 -2 A New Metal Film
Resistor -the Polyohm
4 -3 Millimeter Waves
136 -PAGE CATALOG
Complete data on PRD
Instruments with notes
on theory and applications.
TYPE 504 FREQUENCY RANGE: Measures 100 to over 10,000 mc/s.
Generates 500 to 900 me /s and harmonics INTERPOLATION ACCU-
RACY: 0.03% or better INPUT SENSITIVITY: -30 dbm at 500 me /s
and above
standards.
CALIBRATION REFERENCE: 5 and 50 mc/s quartz crystal
RESEARCH
at DEVELOPMENT CO., INC.
202 TILLARY STREET, BROOKLYN 1, NEW YORK
Telephone: ULster 2 -6800
Midwest Sales Office:
1 SOUTH NORTHWEST HIGHWAY,
PARK RIDGE, ILL. -TAlcott 3 -3174
Western Soles Office:
737 -41, SUITE 7, NO. SEWARD ST.
HOLLYWOOD 38, CAL. -HO -5 -5287
72 For product information, use inquiry card on pages 209 -210 Tele -Tech & ELECTRONIC INDUSTRIES June 1956