Martin RF Supply - Online Store
Bird Electronic - Coaxial Dynamics - Telewave - Daiwa
We can ship: Same Day - Next Day - Overnight

Martin RF Supply - eCommerce Office - (781)430-0450 - 9AM-5PM EST - Arlington MA USA

email: Martin RF Supply


Links to Specifications, Manuals & Detailed Descriptions:

Martin RF Supply Online Store
Martin RF Supply Wattmeters and Elements
Bird 43 Wattmeters and Elements
Daiwa and Comet Wattmeters
Telewave Broadband 44AP Wattmeters
Coaxial Dynamics 83000A Wattmeters
Bird Electronic RF Loads 8890 8860
Bird Model 43 Elements
FREE - Bird User Manual Downloads
FREE - Telewave User Manual Downloads

Links to RF Power Wattmeter Manufacturers

Bird Electronics Wattmeter Products
Telewave Broadband Wattmeter Products
Coaxial Dynamics Wattmeter Products
Daiwa & Comet Wattmeters

Bird Model 43 Wattmeter

The Bird Model 43 THRULINE® Directional Wattmeter is a thoroughly engineered, portable, insertion-type instrument designed to measure both forward and reflected CW power in coaxial transmission lines. Low VSWR and insertion loss, ± 5% of full scale accuracy. It will accurately measure RF power under any load condition. 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. The Model 43 is easy to use and simple to service in the field.

The Model 43P has the Bird 4300-400 peak reading conversion kit installed. The Model 4300-400 kit is designed to easily convert any Model 43 to accurately read peak power in AM, SSB and certain limited pulse applications. Installation of the kit in no way affects the Model 43’s ability to accurately read CW power. The circuitry operates from 2 standard 9V alkaline batteries.

Product Specifications:



Martin RF Supply Online Store Store

Bird Model 4431 Wattmeter

Variable RF Tap, Portable Thruline® Wattmeter. The Bird 4431 RF Sampling Wattmeter is the same as the Bird Model 43 Thruline 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.

Product Specifications:



Martin RF Supply Online Store Store

Bird Model 4314A 4314B 4314C Wattmeter

 PEP, Portable Thruline® Wattmeter. The Bird 4314B Wattmeter is similar to the Bird Model 43 Thruline Wattmeter but also contains electronic circuitry to accurately measure peak envelope power which is present in amplitude modulated signals such as AM broadcast, single sideband and TV video transmitters. The circuitry operates from 2 standard 9V alkaline batteries or an optional AC adaptor.

Product Specifications:

Bird Model 4391A Wattmeter RF Power Analyst

The ruggedly built, multifunction Bird Model 4391 RF Power Analyst features a digital display, microprocessor-based operation, and simplified, push-button control. This wattmeter is well suited to telemetry, two-way communications, avionics and radar, as well as standard radio and television applications.

Product Specifications:

Bird Model APM-16 Wattmeter

The Bird Model APM-16 RF wattmeter is designed to keep pace with the ever growing complexity of digitally-based communication systems. Bird's Model 43 and most other wattcmeters available today were designed to measure power of constant amplitude, sinusoidal waveforms. Modern wireless communication systems can use a variety of digital techniques to combine many voice data channels into a complex, composite RF signal. Measurement of such signals with a conventional wattmeter may yield unacceptable errors. The APM-16 employs active circuitry to deliver accuracy of ± 5% for multiple-access technologies such as CDMA, TDMA, FDMA and other digitally-encoded communication systems.

Product Specifications:


Martin RF Supply Online Store Store

Bird Model 4410A Wattmeter

The Bird Model 4410A uses the basic principles and “look and feel” of the Model 43 but transforms it into a highly accurate high dynamic range instrument. The mirrored-scale linear range meter has 2 switchable ranges, 0-1 and 0-3. Power is read as a multiple of the value indicated by the pointer, the decimal point location depending upon the range switch position and the factor printed on the plug-in element. Power ranges covered by individual elements are 2 mW to 10 W, 20 mW to 100 W, 200 mW to 1 KW and 2 W to 10 KW, full scale. For most elements, accuracy is +/-5% anywhere above 20% of full scale. The circuitry operates from a standard 9V alkaline battery.

Product Specifications:

Martin RF Supply

Bird Model 4304A Wattmeter

The Model 4304A uses the basic construction of the Model 43 and modifies it with a special broadband element and range switch for general purpose RF power measurement without the hassle of carrying a set of individual elements.

Product Specifications:



Martin RF Supply Online Store Store

Bird QC Connectors

Many TERMALINE load Resistors, attenuators and absorption wattmeters, as well as THRULINE wattmeters, employ Bird's patented QC-type "Quick Change" RF Connectors. Bird products may be ordered with the connector(s) most convenient for use with your equipment. Many customers order additional connectors to avoid using performance robbing adapters. Because of the wide variety of connectors and possible applications, electrical specifications for QC-equipped products are quoted with the standard connectors normally supplied with equipment.

email: Martin RF Supply

Martin RF Supply Online Store

We Have In Stock:

Martin RF Supply - Online Store
World's Greatest Inventory of Bird Wattmeter Elements

Martin RF Supply - eCommerce Office - (781)430-0450 - 9AM-5PM EST - Arlington MA USA