43, General Purpose Wattmeter
43, General Purpose Wattmeter
Bird Technologies - The RF Experts


43, General Purpose Wattmeter - The Industry Standard
A field-proven portable, insertion-type instrument designed to measure both forward and reflected CW power in coaxial transmission lines under any load condition. With a full-scale accuracy of ± 5%, it accurately measures RF power with low added VSWR and insertion loss. QC (quick change) type connectors and a full range of plug-in elements provide a wide choice of frequency ranges and power levels giving the Model 43 amazing flexibility. Two extra elements can be stored in the housing, one on each side. The Model 43 is easy to use and simple to service in the field.

  • Accurate CW field power measurement over 450 kHz to 2.7 GHz and 100 mW to 10 KW.
  • Uses industry standard Bird elements with space to store 2 additional within the meter housing
  • Rugged metal housing for the most demanding environments
  • Quick Change (QC) connectors to minimize the need for adaptors when making critical measurements

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product specifications:

Item No43
Item NameGeneral Purpose Wattmeter
Power Range100 mW to 10 kW (using Bird® Plug-in Elements)
Frequency Range450 kHz - 2.7 GHz (depending on element)
Insertion VSWR1.05 max. to 1000 MHz (with N Connectors)
Accuracy± 5% of full scale
ConnectorsQC Type (Female N normally supplied)
FinishLight Gray Powder Coat
Dimensions(H x W x D)
6-7/8" x 5-1/8" x 3-5/8"
175 x 130 x 92 mm
Weight3 lbs. (1.4 kg)

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compatible devices:

Table 1 - Standard Elements
7/8" Line Section - Standard Elements
Table 2 - Low Power Elements
7/8" Line Section - Low Power Elements
Table 3 - High-Frequency Elements, Entire Table ±8% FS
7/8" Line Section - High-Frequency Elements, Entire Table ±8% FS
Table 3A - High Frequency Milliwatt Elements
7/8" Line Section - High Frequency Milliwatt Elements
Table 4 - Low Frequency Elements
7/8" Line Section - Low Frequency Elements
Table 6 - Milliwatt Elements
7/8" Line Section - Milliwatt Elements

accessories - Accessories:

Carrying Case - Portable Thruline®, Load, Signal Sampler, QC Connectors and 4 Elements
Carrying Case - Thruline® Wattmeter, 5 Elements and 1 Small Load
Carrying Case - 12 Plug-In Elements