What is a Dummy load and How to Choose the Right One?

0 Reviews / Post a Review Avaliability Product Avaliable For Sale

QUICK OVERVIEW:

Add to Cart View Cart Checkout

A dummy load is an unadulterated resistor of significant worth 50 ohms which can supplant you’re communicating aeronautical and empower you to work the transmitter for test purposes without emanating a sign. It can also be used as an alternative to antenna during radio transmitter tests. It sounds sufficiently straightforward, yet there are two primary issues. First and foremost, it is difficult to dig into your garbage box and arise with a resistor that will disperse 100 W PEP and still hold its checked opposition esteem. Furthermore, pure resistance is extremely hard to accomplish. A pure resistance is a gadget which has opposition however no reactance. All normal resistors have critical reactance at radio frequencies, especially the wire-wound assortments, which have a helical for example wound like a coil development. This is especially irritating, in light of the fact that wire-wound construction is ordinarily utilized for enormous wattage resistors. There are a few things that you need to consider before purchasing a dummy load. Waters and Stanton offer some of the high quality dummy loads.

How to Choose?

When you are choosing a dummy load it is better to focus more on the technical parameters and not on the material construction. Following are the few things you need to take into consideration before purchasing one:

·    When you use it as a substitute of an antenna it is important to choose one with the same resistance as the antenna. With the same resistance it can perform the transmission well.

·       A high quality dummy must be able to absorb and tolerate high amount of power or heat. Because during testing the dummy faces radio signals and energy released by the transmitter. This absorbed energy will eventually convert into heat. It is important in perspective of a heat sink. There are many types of heat sinks like oily, water, alloy, aluminum etc. commonly in the market the dummy load heat sink is usually an aluminum or alloy one. Therefore it is also given the name of fry heatsink load. So before you purchase a dummy load make sure that its heat absorbing capacity is high. In such cases Waters and Stanton provide with high performance dummy loads.

·       A perfect dummy load is considered the one that has 1:1 standing wave ratio. But it is not possible to get such a ratio therefore a dummy load that gets close to 1:1 standing wave ratio is the best choice. In case of antenna a ratio of 1.5:1 is considered acceptable.

·      When you are ordering a dummy load online or buying it through local stores you need to ask the supplier a number of questions about its power in watts, frequency in hertz, and connector type whether it is an N type connector a DIN type connector or any other types. When you are satisfied with the answers you can purchase a dummy load of your choice, Waters and Stanton have some of the best quality dummy loads.