Bird - The RF Experts
43, General Purpose RF Wattmeter

Bird Model 43, General Purpose RF Wattmeter - The Industry Standard

The 43 Wattmeter is 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.

  • 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 adapters when making critical measurements
product specifications:
Item No
Item Name
General Purpose Wattmeter
Power Range
100 mW to 10 kW (using Bird® Plug-in Elements)
Frequency Range
450 kHz - 2.7 GHz (depending on element)
Insertion VSWR
1.05 max. to 1000 MHz (with N Connectors)
± 5% of full scale
QC Type (Female N normally supplied)
Light Gray Powder Coat
(H x W x D)
6-7/8" x 5-1/8" x 3-5/8"
175 x 130 x 92 mm
3 lbs. (1.4 kg)
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 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