· The 4431 RF Sampling Wattmeter is the same as the model 43 General Purpose Wattmeter except for an
RF signal sampler probe. This RF probe provides a low power sample of the signal being measured and
is available at a female BNC connector on the right side of the housing. The signal level can be adjusted
with a control knob on the front of the meter. The sampled output can be connected to any
RF signal monitoring device such as a frequency counter, spectrum analyzer, or oscilloscope.
Accurate CW field power measurement while providing a variable RF tap for signal analysis or monitoring
· 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
Power and Frequency Range | 5 kW max. 2-30 MHz 1 kW max. 30-1000 MHz using Bird® Plug-in Elements |
| Accuracy | ± 5% of full scale |
| Insertion VSWR | N Connectors 1.07 max. to 1000 MHz |
| Insertion Loss | 0.1 dB max. （2-512 MHz） 0.2 dB max.（512-1000 MHz） |
| RF Sample Output | Variable -15 to -70 dB from BNC （Female） port |
| Connectors | QC Type （Female N normally supplied） |
| Finish | Gray Powder Coat |
| Nominal Size [inches （mm）] | 6-7/8" x 5-1/8" x 3-5/8", including connectors （H x W x D） 175 x 130 x 92 mm |
| Weight | 4 lbs. （1.8 kg） |
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