Stretch out the legs of the antenna as much as possible, and pull them as high in the air as possible. Why send half your signal into the sky when it can do more good down close to the horizon? You now have a half wave dipole. It may not seem very sexy, but coax is important stuff. Depending on spreader size you may have to reduce the length by as much as 4% or more! Use the recommended fuse rating for your set. If you follow these particular dimensions you should be close to being tuned up.
While a properly tuned antenna will result in strong radio performance, failing to properly tune your antenna can result in poor performance and can even damage your radio from excessive radio frequency heat that is reflected back into the radio instead of transmitted out. Therefore, a magnetic antenna could be installed on the trunk, but if you need extra range, you could move it to the top of the car. Folded dipole antennas will work great if you do not have a metal roof. Many tuned circuits of today's time can actually go down to several layers of skin with just one touch. One of the best, and probably the cheapest is the electric fence wire that is coated with brass, or copper. The chances of them becoming rusted or stuck are significantly less. You can only use the original formula as a starting point.
Finding old house wire is the best choice. This one and the J pole I posted earlier are both omnidirectional with no lobes; when viewed from the side both have a low angle lobe. If you belong to a homeowners association, check with them. If one end of the antenna is higher than the other end, then it's best to have the center of the coaxial cable connected to the higher side, and the outer braid of the coax connected to the lower side. It won't take you long at all. Now it's time to connect to the power supply! Folded dipole antennas will work great if you do not have a metal roof.
Amateur radio has progressed, and continually changed since the spark gap transmitters of that time. One goes to your radio, and the other one goes to your antenna. The antennas can be adjusted to your desired height and controlled from the passenger compartment of the vehicle. It may be helpful to contact your local utility company to survey the area where you will be installing the ground rod to ensure there are no electrical or plumbing run in the area. If the needle moves all the way to the right, the meter is working properly. Some tightly wound wire may also coil back on itself, regardless of what it is made from, or coatings.
The inside fuse box, located on the driver's side of the dash has a few spare slots but none of them are wired to the box. For example, if one location was due north of the other, then it would be best to have both antennas hanging east to west. Click on the picture below for some Ideas on how to build yours. Often, they come with a small amount of solder, usually more than enough for many small jobs. The most common methods are the following: For mounting on top of a roof, either a flat roof or with a peak, a tripod is often most convenient: A bracket of this type can be used to mount the mast on the side of the house: There are mounts available to mount the mast to an existing chimney or vent pipe.
Friends may find this experience fascinating. When it is successful, tie a masons line, or even affix the rope you are going to use to the line, and gently roll in your catch over the branches of the tree, and pull it down to the ground. The ground rod will help to divert the electrical charge harmlessly into the ground and away from the equipment. Tuning the Fishing Pole Ear Now it's time to get into the electrical part of the antenna. Most magnetic antenna mounts come with a coaxial cable pre-attached.
It has average shielding and an average thickness exterior with the cable diameter measuring about 0. Lay this leg of the dipole aside, and do the same with the other leg. I believe that all forms of the radio hobby were meant to be fun and inexpensive. Thanks everybody for all this cool help! It's another tight fit, so check that the door will close properly before you drill the holes. Though they seem ideal for offroad use, avoid them.
I decided on mounting the antenna smack dab in the center of the truck bed because in my eyes that just looks the best. The ground is the side that comes from the shield of the coaxial cable. After you have the circumference, divide by 6 if you are using 6 wires, or divide by 8 if you plan on using 8 wires for this project. Wrap a few turns tightly around the end of the ground rod and the cut way any excess wire with the cutters. The thin wire is wrapped tighter towards the top placing most of the wire near the top. However, if you don't already have the materials, this is one of those cases where buying the finished product probably costs less than buying the raw materials yourself.
Most magnetic mount antennas are base loaded due the weight and bulk of the coil. If you're still reading at this point. Here's several other feed lines you may consider to use. These antennas from Radiowavz are very well made with quality materials and are sealed very well. Cover the rod in duct tape either lengthwise or with a spiral wrap, making certain all parts of the rod are covered. Keeping the weather out: After running the coax into the cab and making sure everything outside is secured, I then put some silicon caulking in the hole. The pieces should be gradually smaller, one being able to fit inside the next.
Conclusion This discussion has covered the basics, and for the vast majority of installations, should allow you to install a very good antenna. Some base antennas will work slightly better than others. As with a base antenna, there are three major elements: You need an antenna, you need some way to mount it to the vehicle, and you need a cable to go to the radio. After installation, you need a few tuning and its all set. However, if you want to set up communications between two locations, it doesn't matter whether the antennas are vertical or horizontal--as long as they both have the same orientation. Remember that the inner conductor and outer braid of the coax must not touch each other, nor can the radials come in contact with the driven element.