Cablek builds custom and standard cables. Distribute computer,Audio Video Cables,Network cat5e cat6 cables,HDMI,DVI,USB Cables, Fiber Optic Cables, A/V cables,power cables,power cords,power adapters. RC- CAM Projects: Goof Proof Patch Antenna. I purchased the sheetmetal. Lowe's). It was found in the roofing area and is sold. The new versatile Leviton VertiGO Zero U Patch Panel consumes no rack spaces, making it the perfect solution for copper and fiber connectivity in limited small spaces. Buy quality Cat 6 Flat Patch Cables and a huge variety of other Cat 5E/6/6A/7 Patch Cables at wholesale prices. This unit includes a 24 port patch panel and the system cable that connects the ASU2/AX Analog Cards to the patch panel. The patch panel supports the 24 port Analog Card - 50005731 and the 12 port ONS and 4 port LS trunk Card. Building a high performance Patch Antenna may seem like a daunting task. But assembling your own is actually quite easy and these instructions make it nearly goof-proof. This Patch will outperform commercially made. Low gauge sheets of brass or tin will work too. The local hobby. store had some nice sheets of 0. Heck, the lid from. The wood is used as. Do. NOT use metallic/conductive/ferrous material. Design Documents: The full scale sheet. Please be aware that the. If you wish to share. RC- CAM site. You are granted. Using a foot. long ruler, confirm that the printed caliper graphic is exactly 9. Repeat until the scale is as close to 9. Please be aware that some printers. Do NOT skip this step. Now cut out the. two full scale paper patterns. The red border should be fully intact (cut. Apply the rubber cement. If you align them as shown in the photo then only two sides. Do not trace the patterns. Take the time to glue them on. You must ensure that your. Using your tin. snip shears, carefully cut out the two metal parts. All trimming must be. Pay extra attention when cutting the small element since its accuracy. Using a sharp pointed. Using the drill bit sizes shown on the pattern, drill all. Remove the paper patterns. Glue stick adhesive will clean up with water. If you. used any other adhesives then may the Glue Gods have mercy on your soul. Use a flat file to clean up any ragged stuff and slightly. Straighten any warps so that the panels. The SMA connector. It should. drop into your drilled holes and sit perfectly flush on the surface. Solder the four ground. I found that clean galvanized steel or tin material. Do NOT trim the center. The SMA's center post. Merely solder a short piece of 2. AWG. solid wire (a . When you are done it should extend the post by about a quarter. Now clean off ALL. Do not omit this step. Now it's time to. You will need five pieces that are . The critical thing is to maintain the. Place them on the sheet metal. Allow. the glue to dry. If you don't want to wait long then use fast cure 5- minute. CA. Now its time for. Align the hole in the element over the SMA's. Slide the two parts together so that the. SMA's center post passes through the small element panel. The reflector's beveled. The element's two. The two panels. should appear to be centered over each other with the SMA offset towards. If you like the fit. Put the two parts together again and ensure that they are perfectly. While the glue is drying. SMA's center post to the element. Be very careful or the little. SMA if its solder reflows. I. suggest you solder it while the adhesive is still wet so that you can pull. Cut off the excess wire stub when. The antenna is now complete! Just screw it onto the SMA. R/C model. The arrow shown. Tx whips). If yours is horizontally polarized. The photo on the left. Patch screwed onto my video receiver. Other than the SMA coupling. Patch. I will probably add a bracket to support it. SMA connector damage. By the way, the PVC. RC- CAM Field Equipment page. GP Patch FAQ: It is important to. Improvising is not a good idea since everything. Here are some common questions about making. Q: I have. two video systems that operate at 9. Mhz and 1. 2. Ghz. Can I use the GP. Patch? A: You can use. UHF and microwave frequencies by re- scaling the design. This. is a process where ALL the dimensions are increased to suit the required. It is important to know the exact frequency of your. To scale the antenna. Scale Factor = 2. Mhz. / Required Mhz Example: Cheap imported. My system runs exactly at 1. Ghz so the scale is 2. The antenna will become larger, so you might want to use heavy gauge. Q: Ok, I. printed the plans. Then I carefully increased the sheet metal size using. I computed. Do I also increase the size of the wood spacer. A: Yes, you. must increase the size of EVERYTHING. Q: I built. the stock antenna and I decided to use coax to connect the antenna to the. Is that OK? A: If you are. I am happy. However, you just robbed your video system's performance. Well, typical coax is VERY lossy at microwave frequencies and so your. If it were me, I would. But. if you like the performance with the coax then leave it in place (just keep. Q: Do I really. need to use the SMA connector shown on the plans? Can I use a common TV. F- connector? Or, can I solder. A: For 2. 4. Ghz. I highly recommend you use a microwave rated connector like the plans. Everything else invites RF loss and will reduce antenna. Most 2. 4. Ghz systems will mate with the SMA connector as shown. Beyond this, if you must improvise then seek. Q: What is. the impedance of the GP Patch? A: It is about. 5. You can use it with a 5. Q: Can I. connect two GP Patch antennas together to obtain more gain? A: Short answer. No. Long answer: Patch arrays are more complicated than that. Without careful. impedance matching, then results will be dismal. Q: I heard. that patch antennas are directional. I do not want to have to aim it at my. R/C airplane as I fly around. What do you suggest? A: You should. find that constantly aiming the GP Patch is NOT necessary. Just point it. in the direction you fly in. There is no need to aim it like a. Q: What do. the 4. A: The original. goal was to try to entice the patch to be circularly polarized. Along with. the cut . They were too complicated, easy to mess up during assembly, and. However, the final design's performance validations were. I did not want to go back and re- optimize. So, they remain in place. Folks that use the original. Ethernet over Coax converter, RG5. Veracity HIGHWIRELong connection range. HIGHWIRE can provide a full- duplex 1. BASE- T network connection, with no bandwidth restrictions, over up to 5. RG- 1. 1 cable, or 2. CCTV- grade RG- 5. Simply connect a single HIGHWIRE to each end of the coaxial cable, and the link will be established automatically with no configuration required. Transparent to the network. The HIGHWIRE connection is invisible to Ethernet data and requires no MAC or IP address; to the camera the link looks like any other network cable. Speed, duplex and crossover are sensed on connection; no setting up is necessary. Universal power input. HIGHWIRE can be powered by legacy 1. Volt DC or 2. 4 Volt AC supplies.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. Archives
December 2016
Categories |