WISCO International (Bird- 4304A-4308)

Broadband, Fixed-Element Multirange Wattmeter for Analog Wireless RF Applications, 25–1000 MHz

4304A The Model 4304A wattmeter is a popular choice for quick testing over multiple power and frequency ranges, and for many two-way communications applications. A single, permanently mounted, 25-1000 MHz element delivers full-scale measurements from 5 to 500 watts. A high quality line section keeps insertion loss to less than 0.10 dB from 25 MHzŒ512 MHz and 0.13 dB from 512 MHzŒ1000 MHz. The resulting full-scale accuracy is ±6% to ±7% (depending on frequency).

Performance is stable to 1000 MHz. Insertion VSWR with the supplied female N-type connectors is a maximum of 1.07 at 512 MHzŒ1000 MHz and will not exceed 1.05 VSWR at 25 MHzŒ512 MHz. A chart mounted to the back of the instrument lets you easily determine antenna or load VSWR from power measurements.

Permanently mounted broadband element covers 25 MHz–1000 MHz and 5W–500W.

Ideal for service work where speed and ease-of-use are a top priority.

Specifications

Power Ranges: 5, 15, 50, 150, 500 W, with no scale limitations except power limited to 150 W from 800 MHz-1000 MHz.

Frequency Range: 25 MHz to 1000 MHz.

Insertion VSWR: 25 MHz-512 MHz: 1.05 maximum with N female connector.
512 MHz-1000 MHz: 1.07 maximum.

Insertion Loss: 25 MHz-512 MHz: 0.10 dB maximum with N female connector. 512 MHz-1000 MHz range, 0.13 dB max.

Accuracy: 25 MHz-100 MHz: ±7% of full scale, using correction charts.
100 MHz-512 MHz: ±6% of full scale, no correction needed.
512 MHz-1000 MHz: ±7% of full scale, no correction needed.

Connectors: QC Type (Female N normally supplied).

Finish: Light gray powder coat.

Nominal Size: 6 7/8"L x 5 1/8" W x 3 5/8" D, (175 mm 5 130 mm 5 92 mm).

Weight: 3 lb. (1.36 kg).

Element: Fixed, multi-range, non-interchangeable.

Model 4308

Cellular Specialist Multirange Wattmeter for Analog Cellular,
440–960 MHz

4308 The Model 4308 provides measurements with ±5% full scale accuracy for analog cellular systems and subscriber equipment. This instrument is also a good choice for low to medium power analog RF measurements in the UHF and 800Œ960 MHz band.
If you work with digital cellular, the APM-16 is a better choice with its ability to handle both digital and analog RF technologies.

Fixed-element design for analog cellular applications.

Specifications

Power Ranges: 1.5, 5, 15, 50 W, with no scale limitations.

Frequency Range: 440 MHz-960 MHz.

Insertion VSWR: 1.05 with TNC connectors (QC type).

Accuracy: ±5% of full scale.

Impedance: 50 ohms, nominal.

Connectors: QC Type (Female TNC normally supplied).

Finish: Gray powder coat.

Nominal Size: 6 7/8 " L x 5 5 1/8" W x 3 5/8" D, (175 mm 5 130 mm 5 92 mm).

Weight: 3 lb. (1.36 kg).

Element: Fixed, multi-range, non-interchangeable.