![]() You will want to avoid pulling the U. Pull the U.FL connector up and away from the board. This is just wrong! Tighten only the coupling nut that that does not have its coupling sleeve extended, and leave the other one loose, flapping in the breeze. With the tool, slide the end with the teeth labeled around the U.FL connector. ![]() One common mistake that people make with 7 mm connectors is that after they tighten one connector to the other, they tighten both coupling nuts against each other. Don't you just love how the microwave industry has hopelessly mixed up the English (SAE) and metric (SI) systems? Almost as bad as the tire industry with their 165 (centimeter) SR-14 (inch) steel-belted radials. Fortunately, most 7 mm connectors have hex-nuts that fit a 3/4 inch wrench. Each wrench is engraved with its preset torque value, torque direction, wrench size. Of course, there is always some gorilla in the lab that can tighten a 7 mm connector so hard that no one else can get it loose. MMCX Male Connector to SMA Male Connector 1 m Cable Length DC - 6 GHz. You should be able to tighten (and loosen) them by hand. SMA series RF coaxial connector with small size,broad band, good mechanical performance, high reliable. The center conductor as well as the contact surface of the outer conductor of 7 mm connectors are always the same, so we have to refer to the sex of the outer sleeve.ħ mm connectors are big enough so that they don't need a wrench to tighten and loosen them. OK, we just violated our definition of what makes a connector male or female, which is generally the configuration of the center conductor. Looking into the connector, if you spin the coupling nut clockwise, the coupling sleeve will extend, and the connector becomes female, spin it counterclockwise and it retracts and becomes male. An SMA interface is uniquely different than a TNC interface, SMA and TNC interfaces. Each connector can act as either a "male" or a "female", depending on which way you spin the coupling nut. Most of a connectors interface dimensions are achieved through the. The vast majority of current handheld antennas use SMA connectors. Their small size is often more practical than the BNC connector, and the design makes it very difficult to cross-thread. SMA male inside diameter is 5/16' (7.9375mm) (the inside diameter where the threads are). The most common place you will use an SMA connector is on recently manufactured handheld/HT radios as the antenna connection or an adapter. The specification for the SMA connector was formalized in military specification. The unique thing about 7 mm connectors is that they are sexless. Diameters of SMA male and female connectors: SMA female outside diameter is 5/16' (7.9375mm): Accommodates a hex nut (bulkhead nut) with 5/16' nominal outer diameter. The lowest VSWR of any connector offered, 7 mm connectors work well up to 18 GHz. Note that with the exception of 7mm, all of these connectors use an air dielectric. Click here to go to our main page on microwave connectorsĬlick here to go to a page on how (not) to trash a cal kit!Ĭlick here to learn about the IEEE standard 287 on precision connectors (new for January 2022)Īttention starving connector vendors, you can contribute and sponsor this page for short money and we'll send some serious site traffic your way!īy precision, we mean expensive.
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