Portable Wattmeters

Bird® offers a wide selection of portable insertion-type instruments for measuring forward and reflected power in coaxial transmission lines. Thruline® instruments can be left in the line for continuous monitoring of either the transmitter power output or the amount reflected by the antenna.
These two quantities are actually the most important transmission parameters: Tuning for the minimum reflected power results in a good match of the load (antenna) to the line, and adjusting the transmitter for maximum forward power into a matched antenna approaches ideal design goals, These optimum system adjustments result in a low Voltage Standing Wave Ratio.


43 - General Purpose Wattmeter
100 mW to 10 kW (using Bird® Plug-in Elements)
450 kHz - 2.7 GHz (depending on element)
1.05 max. to 1000 MHz (with N Connectors)

43P - General Purpose Wattmeter with Peak Reading Option
100 mW to 10 kW using Bird® Plug-in Elements
450 kHz - 2.7 GHz (depending on element)
N/A

4304A - Fixed 25-1000 MHz 5-500 Watt Element, Wattmeter
5, 15, 50, 150, 500 W, with no scale limitations except power limited to 150 W from 800-1000 MHz
25 MHz - 1.0 GHz
25-521 MHz, 1.05 max. (with UHF female conn.)
512-1000 MHz, 1.07 max.

4305A - High-Power Wattmeter
50 W - 25 kW using Bird® Plug-in Elements
450 kHz-2.3 GHz (depending on element)
N Connectors 1.05 max.

4314C - PEP, Single Element, Wattmeter
100 mW to 10 kW using Bird® Plug-in Elements
450 kHz-2.7 GHz (depending on element)
with N Connectors 1.05 max. to 1000 MHz

4412A - Multipower Wattmeter
300 mW - 1 kW or 2 W - 10 kW full scale in one single Plug-in Element
200 kHz - 2.3 GHz CW or FM
with N Connectors 1.25 max. to 2300 MHz

4431 - Variable RF Tap, Wattmeter
5 kW max. 2-30 MHz
1 kW max. 30-1000 MHz** using Bird® Plug-in Elements*
with N Connectors 1.07 max.** to 1000 MHz

APM-16 - Average Reading Power Meter
1 W - 1000 W
2 MHz - 2.3 GHz
with N Connector 1.05 max. to 1000 MHz

4521 - Single Meter- Single Element, Panel-Mount Wattmeter
100 mW to 10 kW using Bird® Plug-in Elements
450 kHz-2.7 GHz (depending on element)
with N Connectors 1.05 max. to 1000 MHz

4522 - Single Meter - Dual Element and Selector Switch, Panel-Mount Wattmeter
100 mW to 10 kW using Bird® Plug-in Elements
450 kHz - 2.7 GHz (depending on element)
with N Connectors 1.05 max. to 1000 MHz

4526 - Dual Meter - Dual Element, Panel-Mount Wattmeter
100 mW to 10 kW using Bird® Plug-in Elements
450 kHz - 2.7 GHz (depending on element)
with N Connectors 1.05 max. to 1000 MHz

4527 - Dual Meter, 2-512 MHz with Sampler Port
100 mW to 1000 W using Bird® Plug-in Elements
2 -512 MHz (depending on element)
with N Connectors 1.05 max. to 512 MHz

ELEMENTS:
Plug-In Elements