· High-Power Wattmeter
The 4305A 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 accuray measures RF power with low added VSWR
and insertion loss. QC （quick change） type connectors and a full range of plugin
elements provide a wide choice of frequency ranges and power levels.
Accurate CW power measurement over 450 kHz to 2.3 GHz and 50 W to 25 KW

· Uses 4305A and 1-5/8" elements

· Constructed with a 1-5/8” line section for higher power measurements

· Quick Change （QC） connectors to minimize the need for adaptors when making
critical measurements

Power Range	50 W - 25 kW
Frequency Range	450 kHz-2.3 GHz （depending on element）
Accuracy	± 5% of full scale
Insertion VSWR	N Connectors 1.05 max.
Connectors	QC Type （Female N normally supplied）
Finish	Gray Powder Coat
Nominal Size [inches （mm）]	6-5/16" x 5-1/8" x 4-1/4", including connectors （H x W x D） 161 x 131 x 108 mm
Weight	4 lbs. （1.8 kg）
Note	Quoted accuracy only when used with other Bird® Products.

Item #	Item Name	Power	Frequency Range （MHz）
25KP7	4305A Elements	25 kW	0.45-2.5
10KH7	4305A Elements	10 kW	2-30
2500B7	4305A Elements	2500 W	50-125
5000B7	4305A Elements	5000 W	50-125
2500C7	4305A Elements	2500 W	100-250
2500E7	4305A Elements	2500 W	400-1000
50K7	4305A Elements	50 W	1100-1800

500H12	Table 1-5/8AA - Standard Elements 30μA	2-30	500 W
1000H12	Table 1-5/8AA - Standard Elements 30μA	2-30	1000 W
2500H12	Table 1-5/8AA - Standard Elements 30μA	2-30	2500 W
5000H12	Table 1-5/8AA - Standard Elements 30μA	2-30	5000 W
10KH12	Table 1-5/8AA - Standard Elements 30μA	2-30	10 kW
25KH12	Table 1-5/8AA - Standard Elements 30μA	2-30	25 kW
100B12	Table 1-5/8AA - Standard Elements 30μA	50-125	100 W
250B12	Table 1-5/8AA - Standard Elements 30μA	50-125	250 W
500B12	Table 1-5/8AA - Standard Elements 30μA	50-125	500 W
1000B12	Table 1-5/8AA - Standard Elements 30μA	50-125	1000 W
2500B12	Table 1-5/8AA - Standard Elements 30μA	50-125	2500 W
5000B12	Table 1-5/8AA - Standard Elements 30μA	50-125	5000 W
10KB12	Table 1-5/8AA - Standard Elements 30μA	50-125	10 kW
25KB12	Table 1-5/8AA - Standard Elements 30μA	50-125	25 kW
100C12	Table 1-5/8AA - Standard Elements 30μA	100-250	100 W
250C12	Table 1-5/8AA - Standard Elements 30μA	100-250	250 W
500C12	Table 1-5/8AA - Standard Elements 30μA	100-250	500 W
1000C12	Table 1-5/8AA - Standard Elements 30μA	100-250	1000 W
2500C12	Table 1-5/8AA - Standard Elements 30μA	100-250	2500 W
5000C12	Table 1-5/8AA - Standard Elements 30μA	100-250	5000 W
100E12	Table 1-5/8AA - Standard Elements 30μA	400-1000	100 W
250E12	Table 1-5/8AA - Standard Elements 30μA	400-1000	250 W
500E12	Table 1-5/8AA - Standard Elements 30μA	400-1000	500 W
1000E12	Table 1-5/8AA - Standard Elements 30μA	400-1000	1000 W
2500E12	Table 1-5/8AA - Standard Elements 30μA	400-1000	2500W

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