Cb antenna coax need better ears12/30/2023 This Shakespeare video explains how to do it in three different ways: no-solder compression, the traditional solder method, and the Centerpin® easy way. The type of coaxial wire used will have a much greater impact. For the lengths used in automotive applications line length is not a consideration. The wire that it connects to, however, is inconsequential compared to those other factors. The most difficult part of a marine antenna installation may be attaching the PL-259 connector. Antenna length, antena position and ground plane is critical to performance and swr. Many turns of waterproof tape is an acceptable, but less desirable, alternative. You must protect all coax connections from water intrusion, especially in the bilge area, masthead, or where exposed to water.įor connections that are open to the elements, we recommend Ancor heat shrink tubing, after coating the connection with silicone grease. Water tends to “wick” inside the braided shield on the cable, which quickly corrodes the copper into a green crust. One drawback of connectors is that they can allow water to get into the cable. This method will reduce losses compared to simply soldering or crimping the conductors together. The red arrows in the diagram point to the plastic insulating washers. The plastic washer or washers need to be centered in the hole on the mounting bracket so that the antenna stud is completely isolated from the bracket. When it is necessary to splice a coax cable, like at the base of a mast, use PL-259 connectors and a PL-258 double female connector. The most common cause of high SWRs is improperly assembled antenna mounting studs. Splices made without the correct coaxial connectors can reduce your transmit power by a factor of ten or more. One of the most common ways to negatively impact your radio’s performance is with a poor splice to your antenna cable. Ancor cable has a very tightly woven shield braid and uses tinned wire for greater corrosion resistance. Weve got all the coax cables you could need. We strongly recommend that you use Ancor coax cable unless your antenna is supplied with cable. However, stranded center conductors have a little higher loss. This chart shows the effect of using different sizes of coax: Coax Size vs. The flexible types (9913F and LMR-400UF) are preferred, particularly for rotatable antennas. High gain antennas cannot recover this lost energy, but they can focus the remaining energy across the water so you come through with as much punch as possible.īigger coax reduces signal losses between the radio and the antenna, which increases power at the antenna. As soon as the signal starts down the coax cable, it begins to lose strength. Here is the reason almost all VHF radios start with about 25 watts of transmit power. Use the largest coax you can fit to reduce signal loss. We offer three kinds of 50-ohm coax cable for VHF radio installations: RG-58CU, RG-8X, and RG-213, the mil-spec replacement for RG-8U. It is precisely made, with the correct impedance for VHF installations. Coaxial cable (coax) is designed to transfer your radio transmitter’s energy to your antenna with as little loss as possible.
0 Comments
Leave a Reply.AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |