Offering A Wide Selection of New and Used Bird RF Wattmeters and Bird RF Loads. Since 1973 our RF engineering and products experience helps with your RF Power Measurement solutions. Huge inventory of Bird Model 43 Slugs! Bird Elements List for Model 43 Wattmeters New and used wattmeters by Telewave, Coaxial Dynamics and Bird Electronic. Call us for assistance in your selection of RF Watt Meters and RF Loads at (781)648-2097 9-5 EST or use the menu on the left to select the items you require. If you don't see a menu on the left then click the Martin RF Supply link at the start of this paragraph. Order directly on-line with our easy to use shopping cart. Payment accepted by credit card, PayPal, or checks, and bank wire transferss. All RF Shop sales have a 100% satisfaction Guarantee! Next Day Shipping on most items! Domestic and International Sales are Welcome.
The Coaxial Dynamics RF products are very high quality, reliable, and affordable and offer an excellent alternative to the Bird RF products. The Martin RF Shop stocks a large inventory of new wattmeters and plug-in elements manufactured by Coaxial Dynamics. The meters have an in-line design and are similar in design to the Bird Electronic Thruline(c) wattmeters. The Coaxial Dynamics and Bird plug-in elements (or "slugs") are interchangeable. There are several models of Coaxial Dynamics wattmeters available for average reading, peak reading, broadband (no plug-in elements required) and other applications. A Two year limited warranty on all Coaxial Dynamics products assures your complete satisfaction. If you already have a collection of Bird slugs they will work just fine in the Coaxial Dynamics wattmeters.
Telewave Broadband RF Wattmeters
The Telewave Wattmeters are an in-line design wattmeter that require no plug-in elements and cover a wide frequency range and power range. If your RF power measurement requirements involve multiple frequency ranges and power ranges the Telewave wattmeters will be much less expensive in the long run as you save by not requiring multiple plug-in elements. There are Telewave wattmeter models available for both HF/VHF (2-200 MHz) and HF/VHF/UHF (20-1000 MHz). The Martin RF Shop stocks new and used Telewave wattmeters. The Bird Electronic Model 4304A is similar in design to the Telewave design and uses a single permanent plug-in element for broadband power measurement.
Bird Electronic Thruline RF Wattmeters
The Martin RF Shop offers a wide selection of used Bird Electronic wattmeters, plug-in elements, RF samplers, RF Loads, and other RF Products. Thruline is Birds name for the RF coaxial line design that they use to sample the RF in two directions. A Thruline (or in-line) wattmeter has two RF connections (input and an output) and is used in series with the RF Load or antenna. We have a large selection of Bird Thruline wattmeters. All used products are fully tested and you're guaranteed 100% satisfaction. We have the best inventory of plug-in elements (Bird Wattmeter Slugs) in the world and can provide next day shipping on all the popular element ranges. We also maintain a very large inventory of new plug-in elements by Coaxial Dynamics and they are 100% compatible with Bird Model 43 style wattmeters.
The Bird Model 43 and other similar in-line wattmeters require plug-in elements (or Bird slugs). A variety of Bird slugs are available to cover a wide range of frequencies and power levels. The Martin RF Shop offers the best selection of new and used wattmeter elements in the world! Each used element is tested immediately before shipping and your satisfaction is guaranteed. New wattmeter elements by Coaxial Dynamics are factory calibrated, 100% compatible with Bird elements, and have a two year manufacturer's warranty. If you require a traceable calibration for your RF power measurements you should purchase a new element.
Coaxial Dynamics manufacturers high quality RF power measurement products similar to the Bird Electronic products and provides an excellent alternative to the Bird Wattmeters. The two manufacturer's plug-in elements are interchangeable. New Coaxial Dynamics products are offered with a 2 year limited warranty to assure your satisfaction.
Telewave, Inc. manufacturers a low frequency (2-200 MHz) and a high frequency (20 MHz to 1000 MHz) model of this type meter. You should note that the maximum power of 500 Watts on these style, as well as other RF wattmeters. is the RMS or average rated power. If you are measuring single side band (SSB) PEP (peak envelope power) the meter can be used at much greater than 500 Watts. As long as the average power is less than 500 Watts it will be displayed correctly on the wattmeter. When measuring RF power of SSB voice transmissions wattmeters will display the average power which is considerably less than the peak power. In other words, a 500 Watt maximum power scale will be adequate to measure SSB voice transmissions up to 2000 watts. For more details on this subject visit this link Power - What's It All About. To measure true peak power you will need a peak measuring wattmeter like the Bird Model 43P, 4314 and APM-16. See more on these meters below.
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The Bird APM-16 employs active circuitry to deliver power reading accuracies of ± 5% for multiple-access technologies such as CDMA, TDMA, FDMA and other digitally-encoded communication systems. Special APM-16 series elements are required for the APM-16 wattmeter.
Calibration of broadband RF wattmeters requires some very specialized and expensive equipment. In almost all cases a NIST traceable calibration can only be performed by the manufacturer. The RF Shop checks each meter and element that we sell for accuracy using high quality calibrated wattmeters and test equipment, however, this is not a traceable calibration. If you require a NIST Traceable calibration on a used product we can have the product calibrated for you by the product manufacturer for an additional cost. This usually takes about 2-3 weeks and costs from $75-$400.
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