Specifications
These specifications include data covering Models 43, 43P, 4305A, 4330, 4431,
4521, 4522, 4523, 4525, 4526, and 4527. Specifications for models not listed
are identical to the Model 43. Any specifications pertaining to a particular
model will be found in the section for that model number, located at the back
of this book.
Impedance, Nominal (All Models)
50 ohms
Insertion VSWR
All models except 4431
4431
Less than 1.05:1 maximum
1.07 (when coupling is less than
30dB)
Connectors
RF Sampling (if applicable)
Primary Line
Female BNC
Bird “QC” Female N normally supplied
Power and Frequency Range
Models: 43, 43P, 4521/22/23/25/26
Model 4527
Model 4431
Model 4305
Model 4330
100mW-10kW Frequency range from
0.45 to 2700 MHz (depending on
element).
1000W maximum 2-200MHz
500W maximum from 200-512MHz
5000W maximum from 2-30MHz
1000W maximum from 30-1000MHz
(applicable only when coupling is
less than 30dB).
25kW Maximum from 0.45-2.5 MHz,
10kW from 2-30 MHz.
5000 W Maximum from 2-30 MHz.
1000 W Maximum from 30-1000 MHz
(applicable only when coupling is
less than 30 dB).
Bird Model 43 Wattmeter
4
Summary of Contents for THRULINE 43 Series
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