Route the cable in such a way that water won't drip in and it won't get smashed by the door as often.
A similar mounting point to the one above should be chosen. Good: If you are using a magmount, the ground plane is parasitic back to the radio chassis mount. This would be an effort to maximize the amount of ground plane around the antenna, and to minimize the amount of directivity that the shape of your ground plane will provide your signal. If you are just planning on the one antenna you should try to get it close to the center front back left right. The main things that impact the information below would be a ladder rack or a metal cover.īest: If you are planning on through hole mounting to the center of your roof deck, the ground plane will be physically established where the connector comes through the roof. Accessories that you might have for your truck will change the below information. They are not worse than motorcycles however. Trucks have some suboptimal mounting locations. Mobile installation is almost always fully unbalanced. However as the linked article in the comment explains you will be fully unbalanced. You don't mention what type of antenna you have or where on the truck you are mounting it. At VHF and UHF frequencies the ideal antenna length between the ends of the band is not that great.Ī feedline choke can be installed on any antenna but unless you are planning on driving a wire brush you're not going to get much induced current in your feed line. VHF and UHF transmission bands are each wider than a single HF band but not wider than all of the HF bands grouped together.
The purpose of a screwdriver antenna is to lengthen or shorten the element to match the wavelength of your transmission band. At this point, there is a good idea to use CMCs for the power lines that supply the RF communication equipment (SMPS power supplies, linear power supplies etc.).The article you reference has to do with protecting the controller in a screwdriver antenna. Potentially, the current mode currents can appear both at receive and transmit, so installing a CMC in the feedline path will significantly reduce the received noise and improves antenna's system overall performance. Because the CMC in discussion does not perform a a matching function, it can be named a 1:1 current balun. Because it forces the current at its output terminals to be balanced, the CMC are often named 'current baluns'. CMC exhibits high impedance to common mode currents/signals and does not affect (significanlty) the usefull differential signals transmitted through the feedline/coax. Often reffered to as a Feedline Current Isolator, a Choke Balun, a RF Choke, a 1:1 Guanella Balun (after its inventor) or a 1:1 Current Balun, the CMC is in essence a signal conversion/isolation device that suppresses (by its resistive behaviour) the current mode currents by forcing them to be balanced at its terminals (equal in magnitude and opposite in phase), even if the connected signal source or the output load are highly unbalanced. ANTW-01 | antenna wire winder | white, 3D.HF -VHF Antennas Antennas for HF/VHF/UHF & accesories, DYI KIts or assembled DIY kits or complete assembled antennas ready to be erected | antenna isolators | VHF/UHF whip antennas etc.VLF1WF VLF Pocket Receiver | 5 – 220KHz.Available as kit or enclosed, easy to use, simple designs and small form factor.
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