Ground plane for mobile antenna. vertical radiator element, and 4 20.
Antennas mounted on front bumpers work okay, but better rearward than forward. Antenna Mast using the Introducing the Tristar Triple Ninja Star CB Ground Plane in a sleek white finish. No Ground Plane Required - Multi-Band Wide Band Pretuned Antenna with Spring Base, 136-174, 380-520, 698-960 MHz (No Tuning Necessary), 22" Read More Price: $39. Nov 28, 2023 · Let’s add a 1/4 wave ground plane with sloping radials to our study, like this: 1/4 wave ground plane with sloping radials, 1/2 wave dipole, and 5/8 wave vertical with the tops at the same height over perfect ground. So for 50. The base loaded matching network supports the collinear or trilinear rod sections above with no need for a ground plane. The rods provide the proper ground plane function for any of the mobile antennas that work in the 144 to 512 MHz range. Its wide-band technology makes this antenna plug-and-play for all VHF applications. Jun 20, 2015 · I don't have any radials or any other ground. The braided wire which forms the outside conductor of the coax is soldered to all four radial wires. youtube. Jul 10, 2020 · I run 6 to 80 meters in my truck with pretty much nothing left out as you well know the late trucks have a plastic bed my 6-80 meter antenna is mounted on the right rear quarter to the support at the rear of the bed not much of a ground plane there but I have worked the world mobile One common example is the monopole antenna. Whichever method you choose, be sure to use heavy gauge grounding wire, properly solder all connections, and seal any bare metal with a corrosion inhibitor. The body of the vehicle and The MFJ-1401 converts most mobile antennas into a ground plane base station antenna. 95 Tram 1159-WB (Out of Stock) A ground plane is a form of a dipole antenna, making up half of the dipole. In the case of vertical antennas, it acts as a mirror, reflecting signals into the atmosphere. High Gain GMRS Antenna 5/8 over 5/8 wave antenna High performance mobile GMRS antenna Metal ground plane required This omnidirectional antenna offers 5 DB of gain giving you the best range of all the GMRS antennas 33 inches long Requires NMO mount and coax The best mobile antenna money can buy, isn't any better than the ground plane it is mounted over. - Aug 16, 2012 · This antenna is perfect for HAMS that need a quick reliable solution for local 2 meter communication. Some antennas are designed above a ground plane to produce a specific radiation pattern, control the antenna’s input impedance, or for practical reasons of implementation. Ideally, I'd like an antenna no longer than 36", but if it's a little longer, that's no deal breaker. Feb 26, 2022 · Building a 1/4 wave ground plane antenna is very easy to do. As I was drifting off to sleep one night, I… Aug 21, 2018 · Today we’re going to build a simple ground plane for the VHF 2 meter band. Terrain is mountainous with constant elevation changes, repeaters are often not much higher (1000' or so) than where we wheel. It's the counterpoise for the element. The kit includes NMO to N-Female adapter and (4) 22 inch long ground plane radials. Number of Distinct Antennas (aka MIMO) - Some antennas internally are actually made up of multiple antennas working together - potentially doubling or quadrupling performance when connected to MIMO-capable cellular We are going to build a 1/4 wave elevated ground plane antenna for non-mobile use. D. It is mounted using a Diamond K400SNMO mount. Wire ground plane antenna for 20m, using materials from a portable dipole kit. When installing a mobile antenna on a car for example you need to make sure the antenna is grounded to metal which can be challenging if the car’s body is made of fibreglass Jan 28, 2024 · Essentially, a ground plane is a conductive surface that serves as a reflective layer for radio waves. In Jul 16, 2024 · Ground Plane Dependent vs Independent - Some antennas need to be mounted onto a metal surface (a ground plane) to perform well. GMRS 1/2 wave antenna No ground plane required Only 10 inches long Requires NMO mount and coax The large metal surface area provides an excellent ground plane for the antenna. If you already have a NGP coax and need to extend it (possibly needing a KPL258X connector), you can do so by using RG8X coax but keep in mind that you will have some loss. 25 Meters and 70 centimeters. The hood (ground plane) is behind the antenna. With four - 45 degree angled radials, optimized signal and SWR for VHF and UHF is Dec 1, 2022 · Not all antennas need a ground plane. William Orr, Radio Handbook, 22 nd edition, Howard W. It's pretty long for a luggage rack mount anyway. What You Need to Build One The Laird MBCN is a Mobile to Base Station Antenna adapter for use with VHF and UHF antennas. This is the vertical radiation pattern of a ground plane antenna over a so-called perfect ground. Functions on any frequency between 406-470MHz, including GMRS. It's available in a NMO version as well but its a NGP setup. The wire diameter affects the shortening factor of both the quarter-wave vertical monopole and the counterpoises in the same way as in the case of a half-wave dipole. 1/2 wave are ground plane independent. Now you can get the performance of a folded dipole without the expensive price tag. On 10 meters I have been working contacts very frequently. Nothing under 5db gain and it should also be able to do 2m. That needs to be at the feed point not at the radio. Many antennas have a ground plane built in, but in particular magnetic mounted antennas (often kitted with mobile vehicle boosters) require one be provided. Perfect for LPFM stations! All stainless/aluminum construction Tunable stainless steel vertical whip, with heavy duty base. Ground plane antennas are easy to recognize by their appearance. I am working with a 10 meter mobile that pushes 60 watt PEAK. 3 out of 5 stars 35 1 offer from $15. The exception is any antenna that has an electrical length of 1/4 wave. 4, Maximum Power 200(Watts), Whip Length 15" Read More Price: $66. COMPACtenna Model 2M/440 Dual-Band NMO Mobile Antennas are very small, high performance dual-band antennas. Ground Plane CB Antennas. Easy install on Apr 28, 2023 · Antennas made up of radiating straight sections like Yagis, half-squares, full-wavelength quad loops, etc. 5dBi 5⁄8 wave x 2, Maximum Power 120 Watts, Whip Length 38" Read More Price: $55. The overall design is simple, with a vertical element surrounded by a ground plane consisting of two or four wires bent down. Radiator. So when you slap a mag mount on top of your car, the roof becomes part of the antenna system. This comes to 19”. %PDF-1. With four - 45 degree angled radials, optimized signal and SWR for VHF and UHF is now available for base station use of these COMPACtenna models: Oct 17, 2023 · Here are three common categories of base station antennas. On the other hand a 5/8-wave vertical does not require a 'ground plane' and is usually used on boats and cars, such as Corvettes, which have fiberglass bodies. By adding this optional ground plane your antenna will perform on non metal surfaces common in the RV and boating industry. The elements are made with stiff wire or welding rod. It’s also a great antenna for emergency communication and can be fabricated and launched in a matter of minutes. 99 $ 15. UAYESOK Mobile Base Antenna Ground Plane Kit, VHF/UHF 2m/70cm PL259 to SO239 Ground Plane Mount Antenna, 136-174MHZ/400-470MHZ. This clever bit of kit simulates the ground, and as the surface reflects radio waves, it creates a mirror image of the top half that appears on the Earth. Molded high heat ABS mounting base feature 6 days ago · COMPACtenna CompacCounterpoise is a unique NMO Mount Ground Plane Radial Kit that turns the amazing mobile COMPACtenna models into sturdy, and stealthy, base station antennas. Only 4 left! Proton PT99 18ft Base Antenna Universal Ground Plane Kit 3 Foot Tripod Roof Mount Mar 17, 2021 · Running Kenwood 25w mobile in my rigs. I picked up a bunch of aluminum tubing from a yard sale, and decided to make an antenna out of some of it. 5 MHz when the radials slope down at 45 degrees from vertical. I don't ask for more considering this small antenna that has no ground plane. 96 (diameter) inches; Mobile Cellular Antennas for RVs and Boats Mar 17, 2018 · UAYESOK Mobile Base Antenna Ground Plane Kit, VHF/UHF 2m/70cm PL259 to SO239 Ground Plane Mount Antenna, 136-174MHZ/400-470MHZ dummy TWAYRDIO Dual Band NMO Antenna, 17 Inch VHF UHF Amateur Radio Antennas for 2Meter 70CM Mobile Radios, with 13ft RG58 Coax Cable NMO to PL259 for Midland Motorola Kenwood Mobile Transceivers Diamond Antenna Dual-Band Mobile Antennas NR73BNMO DMN-NR73BNMO. No Ground Plane Required - Multi-Band Wide Band Pretuned Antenna with Spring Base, 136-174, 380-520, 698-960 MHz (No Tuning Necessary), 22" Read More Jan 13, 2023 · weBoost's updated Drive RV and Drive OTR are omnidirectional shaft-mounted cellular antennas that do not require a ground plane. 2. If you can’t get it that high, then use 1/8 wave. Measuring a total of only 12. Reviewed in the United States on May 22, 2022. May 15, 2019 · HYS Amateur Antennas Dual-Band NMO 20 Inch Antenna VHF 144/UHF 430MHz NMO L Shape Mount Mobile Antenna Bracket W/13 ft RG58 Coax Cable NMO to UHF-male/PL259 for Motorola Kenwood Midland Mobile Radios 4. 4 dB gain, Gain (dB) 2. 99. The ground plane provides for return currents to the antenna, and it may be considered a substitute for the “other half” of a half-wave antenna, such as a dipole. Laird TE Workman (#WILKIT) - (6) Element Mobile Ground Plane Radial Kit, Standard 3/8in-24 Thread Size Description: This six element mobile ground plane radial kit will add more performance to any standard 3/8in-24 thread type antenna. The purpose of the ground plane is to provide an antenna substrate that optimizes signal reflection back into the antenna receivers. Mounting bracket is fabricated from heavy duty aluminum and clamps to No Ground Plane Mobile / Indoor / Outdoor Use $ 335. Ground planes do not require "grounding" or a wire connected to earth/ground. 39 x 1. They are a true 300 ohm antenna and when combined with an outdoor 300-75 ohm transformer they provide the best possible match to the popular 75 ohm coax cables. 200 Watts. The efficiency, radiation pattern, and impedance of an antenna are significantly influenced by the quality of its ground plane. 75 out of 5 stars. What’s In The Box – Midland 32” 6dB gain-whip antenna. 95. Since many antennas end up being mounted at the edges of the vehicle roof or hood (such that the ground plane is asymmetrical at best), should a “no ground plane required” antenna be considered (along with the amount of gain) in choice of antenna? Oct 31, 2023 · Hi my good old Radio Reference Community, I am currently getting ready to change out to a new NMO Mount Antenna for monitoring VHF 150-174Mhz, UHF 450-470Mhz as well as 769-775Mhz for my Statewide P25 Trunked System. Here are instructions for building one, complete with the necessary ground plane, which will help complete the antenna circuit and allow the RF energy to radiate as efficiently as possible. Maximum Power 200(Watts), Whip Length 16" Mobile Antennas. 2 Meters, 1. HF Antennas 6 days ago · COMPACtenna CompacCounterpoise is a unique NMO Mount Ground Plane Radial Kit that turns the amazing mobile COMPACtenna models into sturdy, and stealthy, base station antennas. Find COMPACtenna CompacCounterpoise NMO Mount Base Station Ground Plane and get Free Shipping on Most Orders Over $99 at DX Engineering! COMPACtenna CompacCounterpoise is a unique NMO Mount Ground Plane Radial Kit that turns the amazing mobile COMPACtenna models into sturdy, and stealthy, base station antennas. The sturdy mounting bracket has two 0. com FREE DELIVERY possible on eligible purchases Add style and the perception of excellent performance with a ground plane kit, or ground radial kit for your CB antenna. Heavy Duty 1/2 wave No Ground Plane Antenna, 144-174 MHz (Tunable), Gain (dB) 2. The one pictured below is for receiving ADS-B aircraft signals on 1090MHz, again using scrap copper, but this time a purchased N-Type chassis socket. Most verticals are 1/4-wave (not a dipole) and require a 'ground plane' to complete the 'virtual dipole'. In the ground plane antenna style whip antenna, the "plane" consists of several wires 1 / 4 λ long radiating from the base of a quarter-wave whip antenna. The formula to figure the starting length of a 1/4 wave antenna is 246 / frequency in megahertz. Item # B4505CN, Mobile Load Coil Antennas on Laird Technologies cab mounted, antenna at roof line Jan 29, 2020 · Measurements – Antenna measures 32 inches: overall height with a 1. Most CB antennas require a large metal surface (called a "ground plane") in order to work properly. 450-470 MHz Antenna, No ground plane base loaded 1/2 wave antenna with spring. designed for standard 3/8 x 24 threaded antennas. Sep 3, 2023 · This is a most useful thread for mobile GMRS users. 2m-70cm Mobile setup on Black Dodge Challenger NGP antennas use a coil and capacitors to create a ground plane effect, making them ideal for use on fiberglass, RVs, boats, and other non-metallic surfaces. com/gp/product/B00YORIHBO/ref=ppx_yo_dt_b_asin_title_o01_s0 The ground plane affects the characteristics of a planar inverted-F antenna (PIFA) significantly. 4 dB gain, Maximum Power 200(Watts), Whip Length 15" Read More Price: $53. 4. TRAM 1465, 1470 base ground plane kits for VHF, UHF and up mobile antennas with NMO mounting. Compatibility – Midland’s whip antenna is compatible with MXT105, MXT115, MXT275, MXT400, MXT500, MXT575. Now I have the antenna mounted on the passenger side of my spare tire carrier. 700/800/900 MHz No Ground Antennas. A solid, low-resistance ground is key to getting the most from your mobile antenna. Mar 17, 2016 · TWAYRDIO UHF/VHF Mobile Ground Plane Antenna Enhance Signal UHF Female to PL 259 Male Connector for Car Radio Mobile Transceiver 3. 73 PROJECT BUILD Turn a Mobile Antenna into a Base Antenna Aug 14, 2015 · Yes that is true, mobile whip antennas utilize the body of the vehicle for its ground plane. 95 Laird TE Connectivity B8965CNN Here is an example of a wire HF ground plane antenna feedpoint using my portable dipole kit: the two red radials are the wires for a 20m dipole, and the yellow vertical wire is an additional piece cut to about the same length. No Ground Plane CB Antennas Products. I'll spend most of the time on the 70cm and GMRS frequencies, so 440-470 MHz. On this CB Antenna, the four radial wires are used as the ground. If you had a vehicle with a fiberglass or plastic roof, you would either have to use a half wave antenna that doesn’t require a ground plane or create a 132-174 MHz 2. With four - 45 degree angled radials, optimized signal and SWR for VHF and UHF is now available for base station use of these COMPACtenna models: Our selection of antennas handles from 10 watts to 350 watts of power and covers a wide range of frequencies. Accepts VHF/UHF mobile antennas with PL-259 connector. Mar 9, 2017 · This is a stupid suggestion, as it will try to refashion a 1/4-wave ground plane antenna into a 1/2-wave dipole. Next up are the ground radials. Both the traditional PIFA and the proposed antenna are analyzed using the finite-difference time-domain (FDTD) method in detail 87-108 MHz FM band 1/4 Wave Tunable Ground Plane Base Antenna. A 1/4 wave antenna is only half an antenna, the other half is the ground plane. O. Hoods and Roofs make excellent ground planes. However, it is by no means a replacement for an adequate ground plane under the antenna! Incidentally, the term ground plane is a bit of a misnomer (see next section). By image theory, the fields on the ground plane can be found through the antenna within free space which is shown in the second diagram. Fits almost anywhere, and stealthy. To answer your question. also work quite well. Performance is virtually identical for all three antennas. Designed to deliver superior pattern coverage for mobile and fixed applications, this antenna series features an attractive, compact housing ideal for both indoor or outdoor applications. TRAM 1465 LAND MOBILE BASE GROUND PLANE KIT TRAM 1465 Oct 3, 2021 · While I wait for the Wouxun KG-1000G mobile radio, I bought a half-wave no ground plane (NGP) antenna, and had it mounted to the passenger side cowl, until a branch tore it off. Why? Mobile Antenna Ground Plane Kit-NMO TO N FEMALE; Quick Disconnects; Stainless Steel Ball Mounts; Thru Body Mount NMO-UHF-3?8x24; Trunk Lip NMO-UHF-3-8X24; MOBILE ANTENNA MURS GMRS. When installing a CB antenna on an RV, boat or any vehicle with no metal chassis, a no-ground plane CB antenna kit is required. Jun 17, 2016 · UAYESOK Mobile Base Antenna Ground Plane Kit, VHF/UHF 2m/70cm PL259 to SO239 Ground Plane Mount Antenna, 136-174MHZ/400-470MHZ 4. SO-239 Link: https://www. 3. 5” base diameter and offers 120 watts of maximum power with 5/8 wave antenna. Create a powerful yet small Base Station Antenna, using the CompacCounterpoise Optimized Base Station Ground Plane paired with a COMPACtenna Mobile Antenna. Using the idea of the high-impedance surface to construct the ground plane, a new type of compact PIFA with a photonic bandgap type (PBG-type) ground plane is proposed. It is an integral part of the antenna AC electric circuit. Lairds’ongoing commitment to refinement in mechanical and electrical design has resulted in the most The NA4IT "CHEAP" Dual Band 2/440Mhz Ground Plane Antenna. 5dB 1/2 Wave, No Ground Plane Antenna, Usable Bandwidth 6 MHz, Maximum Power 200 (Watts), Whip Length 49" Read More Price: $52. 5", the POINT5 antenna packs big performance in a small size. Consider also that most cars have a coat of paint between the mag mount and the sheet metal. Here are the key roles of the ground plane in GNSS/GPS antennas: Stabilizes signal transmission and reception: Ensures that the antenna operates at its intended frequency without drifting. Electrically, the function of a ground plane below an antenna is to create an image emitter in the ground region. 3 %âãÏÓ 13 0 obj /Linearized 1 /O 15 /H [ 1002 237 ] /L 87757 /E 47534 /N 2 /T 87379 >> endobj xref 13 29 0000000016 00000 n 0000000927 00000 n 0000001239 00000 n 0000001556 00000 n 0000001585 00000 n 0000001703 00000 n 0000003040 00000 n 0000003150 00000 n 0000003172 00000 n 0000008581 00000 n 0000008603 00000 n 0000013656 00000 n 0000013678 00000 n 0000019140 00000 n 0000019162 It may DC ground the antenna's base, and it just might RF ground it too depending on the straps length and width versus the frequency of operation. It offers an omnidirectional pattern. The half wave radiating portion of an antenna is best at ½ to ¾ wave above ground level. 3m high or a bit over 4 ft. 95 Laird TE Connectivity BB4505CN Nov 22, 2023 · Part of omnidirectional cellular antenna design is a ground plane - or metal that reflects signal into the antenna itself. This design has a long central pole that points into the air and several short poles that lie on the ground around it. The SWR on 10 meters is a very comfortable 1. GMRS Antennas; MURS Antennas; MOBILE ANTENNAS BUSINESS BAND /PUBLIC SAFTEY. a ground plane will often have three or four Jun 8, 2020 · Why do antennas need a ground plane? As a matter of fact, not all antennas do need a ground plane. 200 Watt power rating, 100 MPH (48 m/sec) wind load. 0 out of 5 stars Best for no ground plane. Create a stealth antenna out The no ground plane design of this low profile antenna series provides industry-leading performance and reliability, with minimum loss and no tuning required. Maximizing the available ground plane is what bonding is all about. A mobile CB antenna uses the car body as the ground. A typical mobile CB antenna does not transmit horizontally, it radiates in a downward pattern. Verified Purchase. SWR was too high, around 3:1. NOTE: Whip antenna, mounting pole and coaxial cable are NOT included. 4, Maximum Power 200(Watts), Whip Length 49" PCTEL Maxrad MHB5802 VHF 144-174 MHz Two Way Radio Mobile Antenna NMO | The Antenna Farm GMRS 1/2 wave antenna No ground plane required This is the perfect GMRS antenna when you do not have a good ground plane on your vehicle. I started by putting it on a 2’ x 2’ steel plate but that wasn’t enough metal for a good counterpoise aka ground plane. Most mobile antenna installations use the metal part of the vehicle such as the chassis and the body for the ground plane. 1 out of 5 stars 3. white tip covers on each steel element May 22, 2017 · $\begingroup$ I highly recommend modeling such antennas using NEC2 (or better yet, NEC4) because you can model a vertical antenna and choose to model it in empty space (no ground plane, no nothing), or over a perfectly conducting ground plane as if you had a large sea of copper under your antenna, or over an actual ground model based on electrical conductivity and permittivity of the ground Effective vertical Antennas For 10 Meters Have to Be at the Right Height above Ground. 2 ft ) of 4mm ( 5/32 inch ) rod for the elements here, which resonates at 28. I'd purchased a Nagoya GPK-01 NMO Ground Plane Kit ($28) to test my NMO mobile antenna, because my mag mount seemed flaky. 2 out of 5 stars 348 The rods are buried in the ground, and the antenna connects through a wire. 138-162MHz/450-510MHz Spring base with 5/16"female base, suitable for use with 02740 Benelec UHF base or 10108 UHF base lead and plug. These are based on the original Drive X RV and 4G OTR Trucker. 3/32″ in diameter. Even though they're only 7. Choose from "No Ground Plane" (NGP) options, low profile Stealth antennas, wide band, 1/4 Wave, and 1/2 Wave antenna options. Faraday Cloth in Ever wanted ground planes for your VHF/UHF mobile antenna Now you can . Dec 15, 2015 · If your using radials from the base of the antenna outward for a ground plane, what you want to do is calculate 1/4 wave length for 144 mhz. This omnidirectional antenna ofers 5 dbi gain and 100 watts max power and operates in the 450MHz - 470MHz range. Connects to any standard CB antenna and antenna mount. May 26, 2024 · All antennas require a ground plane. $15. Inc. 95 Comet SBB-5NMO Oct 18, 2013 · That mobile antenna uses the vehicle's metal body as a 'groundplane', or the 'other half' of the antenna. Jan 18, 2017 · Certain types of vertical antennas require a 'ground plane' and some do not. Using no ground plane antenna cable for a traditional antenna (and vice versa) will give you high SWR problems. Includes stainless steel mounting hardware, two hose clamps, allen wrench, and four 20. Apr 21, 2017 · I have this antenna mounted on a trunk lip mount. Sep 17, 2011 · No Ground Plane Mobile Antenna The Diamond NR770HNMO is one good example of a no ground plane antenna. So, this antenna is mounted on an infinite ground plane with an ‘L’ length as shown below. Here's one: A simple ground- plane antenna you can build—for 146, 223 or 440 MHz—in no time flat. 95 Laird TE Connectivity B1442N Jul 17, 2013 · 6. Easy installation on any 2" (5 cm) pole or pipe. Browning BR-136. I mounted my mobile antenna in the attic above the garage. Without a good ground plane, the antenna will perform poorly. Without the large metal roof bellow the mobile antenna, it can't function as designed. More information on installing these antennas can be found in the Antenna Installation - Low Profile Roof Mounts. Monopoles have a single conductor and use the ground or a ground plane as their counterpoise, and this design doesn’t require a balun when connected to a coaxial cable. 5 inch radials. The radio waves from an antenna element that reflect off a ground plane appear to come from a mirror image of the antenna located on the other side of the ground plane. 1/8 wave the base of the antenna is 1. May 3, 2013 · The first and probably the most important that was sort of mentioned by on comment is that most mobile antennas use the vehicle roof as the ground part of the antenna. Ground plane requirements vary given the type of mobile antenna and the frequency of operation. All you need is an appropriate base. 99 VHF/UHF Mobile Dual Band Ground plane antenna. Nov 16, 2023 · I'm not worried as much about cost as I am having the best long range NMO no ground plane GMRS antenna I can get, prefer at least ⅝ wave. 25-in. It's the other half of the antenna in a mobile enviromment. 2 and I checked on 11 Meter and was 1. (C)2016 - NO1PC, JIM ASPINWALL Dec 28, 2018 · The need is a no ground plane dual band antenna that's capable of transmitting across all 2M, 70cm, and GMRS frequencies. Save $10. A traditional CB antenna uses the metal chassis of a vehicle when transmitting the radio’s signal. The short poles help to reflect and amplify the Nov 2, 2020 · ANTENNA NIGHT PLAYLIST https://www. Minimize Ground Losses. The ¼ Wave Droopy Ground Plane Antenna. 700/800/900 MHz. Jul 20, 2017 · Whether stationed at home or deployed in the field, this ground plane kit can face strong winds and harsh weather without compromising your communication network. This Ground Plane Radials System is designed to work well at all bands in its specified frequency range. Convert your mobile antenna into a ground plane base! The MFJ-1401 converts most mobile antennas into a ground plane base station antenna. The setup is prevalent in many communication systems. In mobile applications, the vehicle body/frame acts as the ground plane (reflective unit). I will be installing it on my external 27-ft. I'm thinking of spending a few bucks on a 5/8 antenna just to test The body of your vehicle essentially serves as a ground plane for your mobile vertical antenna. I would suggest looking at a different type of mount. Most of the Comet and Maldol antennas we distribute are ground independent and can be mounted to new plastic/composite cars with the standard lip mounts. It features wire-end loops for safety (sharp, straight wires are hazardous) and convenience (its top loop lets you hang it off high objects for best performance). VHF 1/2 Wave No Ground Plane (NGP) Antenna (VHF 144-174 Mhz) The best VHF antenna for Work, Race, or Play! We've manufactured this GO FURTHER antenna for optimum performance in the VHF range of frequencies. A ground plane antenna for the 2 m band consists of an SO-239 connector, a 19. Sams & Co. 95 Laird TE Connectivity B4503 For instance, a larger ground plane generally offers better reception capabilities but might not be practical or necessary for all applications. Four stainless spring steel 1/4 wave ground radials. If you are mounting an antenna to a boat or fiberglass RV, you need a special type of antenna called a "no-ground-plane" antenna. 99 I've been thinking for some time about magnet mount mobile antennas and wondering how they establish their ground plane. To find the full diameter, calculate 1/2 wave length for 144 mhz. 95 Tram 1159-WB (Out of Stock) Aug 30, 2021 · The first step in choosing an antenna depends on the type of vehicle you have. Coaxial Feeder Lines: Coaxial cables are commonly used as transmission lines for connecting antennas to receivers. Another antenna that’s popular and effective is the ground plane antenna. The GMRS-POINT5 / UHF optimizes your GMRS radio by delivering the best signal performance throughout the programmed channels. Hustler 5/8-wave full-size 2 - m HF Mobile Antennas AK4XO Screwdriver •These antennas are shortened versions of vertical antennas Jul 12, 2023 · Ground plane availability is another critical factor in mobile antenna performance, and must be considered when determining the location and type of the antenna. efficient antenna that's just as portable as a hand-held. A ground plane CB antenna works by using the ground to help it transmit and receive signals. Versatile Antenna Compatibility: The GPK-01 kit supports a broad range of UHF, HF, and VHF NMO antennas, covering frequencies from 0 to 1000MHz. 200 MHz and SSB operation we would want an antenna that is 58. 0dBi 1⁄2 wave 446MHz 5. I’ve chosen 2. 8 out of 5 stars 129 1 offer from $14. Find your VHF/UHF mobile vertical antenna at DX Engineering today. No-Ground Plane (NGP) Antennas. Use NGP coax cable for NGP antennas. Sort 11 Items No Ground Plane Mobile / Indoor / Outdoor Use; was $99. 25 in. It requires a good ground plane to work correctly. •¼ wave ground-plane . Designed to enhance your mobile antenna performance, this extra radial kit is equipped with a 3/8” x 24 thread fitting, ensuring compatibility with a wide range of CB mobile antennas. A metal surface (the larger and flatter, the better) is required underneath the CB antenna to launch the signal out into the atmosphere. How to build a VHF/UHF ground plane antenna with household wiring. com Aug 13, 2020 · Internal Ground Plane: Unconfirmed, but likely no; Dimensions (H x L x W): 3. We offer VHF mobile and UHF mobile antennas of all sizes and gain figures. Its well protected, and from my testing, seems to get the job done. com/playlist?list=PL01YuCls6edYQkHejzJNAxZqX9eRBeG8BI have been wanting a versatile antenna that I can take with m Antennas 101 27 The Ground Plane - 5 •Length (ft) 234 / f (MHz) –231 / f if #14 wire used, - 221 if 5/8” tubing •Feed point impedance 35 Ω –if radials used, sloping increases feed point impedance –approximately 45° of droop gives best match –halfway between dipole (72 Ω) and ground plane (35 Ω) 2013 Jul 23, 2020 · 1. 3. ANTENNA PARTS LIST: Apr 7, 2019 · An antenna ground plane is not to be confused with an electrical ground. Accepts VHF/UHF mobile antennas with PL-259 connector. Editors Note - Here is a very easy to build dual band (2 meter/440) vertical ground plane antenna that may end up as your primary antenna for dual band operation or for emergency use. No Ground Plane Required Mobile Antenna, PL-259 Mounting 146/446MHz, 146MHz 3. Part Number: DMN-NR73BNMO Estimated Ship Date: Oct 21, 2024 Feb 11, 2020 · Why does 1/4 wavelength have to have a ground plane and 1/2 doesn't? I know that an antenna that has half a wavelength does not need the ground plane (example a dipole antenna) and when using a wavelength of 1/4 it is usually necessary to have the ground plane (planar antennas [PCB]). COMPACtenna Model 2M/440 Dual-Band NMO Mobile Antennas. 00. Below is a quarter wave ground plane antenna I made for 23cm, 1296MHz which is made from off-cuts of household mains copper wire and a scrap BNC socket from the junk box. A ground plane is a form of a dipole antenna, making up half of the dipole. Laird 450-470MHz 5dB Antenna No Ground Plane (B4505CN)The Laird B4505CN is a 32 inch chrome base loaded mobile UHF whip antenna with NMO base and NO ground plane required. Product Variations. elements to form the ground plane, as shown in Figure 3. Ideal for 2 & 70cm !! Key Features/Specifications: Black chromed mobile ground plane Frequency: 100-1300MHz Length: Radial option 3 x 110mm or 3 x 155mm Fitting: PL A ground plane, also called counter poise, is the reflective unit in the system, while the antenna is the reactive unit. 6 out of 5 stars 4. THE HAND-HELD RADIO ANTENNA DILEMMA – 4 – •Adding appropriate lengths of radial material at the base of the antenna provides a ground plane for improved radiation pattern and counterpoise for known RF current return path. This is called the ground plane of the antenna. UHF Antennas; VHF Antennas; MOBILE ANTENNAS CB RADIO; MOBILE ANTENNAS HAM. 5 inches tall, they provide superior Omni-directional coverage far beyond their size, using a unique, patented* Electric-Magnetic Field Diversity design. Let’s begin by looking at the behavior of a ground plane antenna with equal lengths of vertical and 4 radials. Here are the dimensions for the VHF/UHF amateur radio bands (from the ARRL Handbook), but these dimensions can be scaled to any frequency. A plus if it can do: 136-180 VHF • 219-250 VHF • 350- 512 UHF • 700-960 UHF quad-band, with GMRS being the necessity. reason why such a mobile antenna could not be used at home. vertical radiator element, and 4 20. Includes stainless steel mounting hardware, two hose clamps, allen wrench, and four 20. The Dipole Designed for installations that lack a suitable ground plane, this antenna features a tapered loading coil jacket with chrome plated fittings and an optional heavy-duty stainless steel spring. In mid-2020 Peplink rolled out a new product line of Puma omnidirectional antennas targeted at mobile users. improves antenna system with better ground. This mount clamps to the edge of the hood, trunk, door, etc. All vertical antennas need to be grounded in some way. A ground plane for a CB radio antenna is the metal surface required below the antenna. Conversely, the ground plane is a metal sheet or radials installed beneath the antenna. See full list on modernsurvivalblog. Good for trail leaders. Antenna mount is not included. 8″ long. Ground plane is imaginary, and basically means that your RF signal won’t go down, so all the physical energy goes up and outward. Like the J-pole, ground plane . I've run 1/4 wave antennas exclusively and they seem just fine. , 1981. A monopole antenna is ½ (one-half) of a dipole antenna which is nearly mounted on top of some type of ground plane. Jul 8, 2018 · For our July Fourth Safety Watch this year, I used my dual-band mobile antenna on a ground plane mount on a camera tripod. If your not looking to transmit on this antenna, all your loosing is gain. This element is 1/4 wavelength long, or about 19 inches for the 2 meter band. An HF Mobile Antenna; Hidden Antennas; Desk Microphone; Tilt Base & Mast; Simple Ground Plane Antennas for . A typical 5/8 wave antenna at 150 MHz requires a ground plane of at least 42” in diameter. It is for 2 meter, 70 cm. A Quick and Simple 2 Meter Ground Plane Project! If you are just getting experience in building antennas or you are an old pro, here is a simple and fun project! This antenna is perfect for those hams living in the primary coverage area of the repeater for 2 meter use. The calculator takes into account the wire diameter of the monopole and radials. On the HF bands, our vehicles act more like a capacitance to ground, rather than a ground plane. Free Shipping On Most Products Mar 17, 2016 · 6 element radial antenna ground plane kit. holes for wall or vertical surface mounting and four notches to provide secure mounting with the provided band clamps on a pole or mast up to 2 in. by ScottDuckworth. Jun 12, 2024 · This style of antenna is a dome antenna with the cables routed through the base of the antenna. 95 $ 89. Our folded dipole scanner antenna provides a wider bandwidth than a standard dipole scanner antenna. First off you’ll notice the radiating element. Then, to see better what the ground plane does, we will look at a monopole — an antenna that does require a ground plane. 5 m ( 8. If you choose a vertically polarized antenna, especially a quarter-wave ground-plane design, ground losses can really eat up a lot of signal. There are systems that don't require ground planes; those use the shield in the coaxial cable as a Oct 17, 2013 · Buy NR770HBNMO Mobile antenna 2m/70cm, NMO, 40in: 5. For UHF, I'm fond of the TRAB4500NP from Laird. 3 %âãÏÓ 1 0 obj /Type /Page /Parent 12 0 R /Resources 2 0 R /Contents 3 0 R /Thumb 7 0 R /MediaBox [ 0 0 576 792 ] /CropBox [ 0 0 576 792 ] /Rotate 0 >> endobj 2 0 obj /ProcSet [ /PDF /ImageB ] /XObject /Im2 4 0 R >> /ExtGState /GS1 19 0 R >> >> endobj 3 0 obj /Length 49 /Filter /FlateDecode >> stream H‰Òw 6TH/æ*ä257S0BsKC=K s’s¹ô=s \ò¹ ¹ ×7 x endstream endobj 4 0 obj 806-866 MHz 5dB No Ground Plane Antenna. amazon. Standing Wave Nov 5, 2019 · As I understand it, most mobile antennas don’t have ground plane radials because the metal roof of the vehicle is the counterpoise. To understand why this is, let us begin by looking at a dipole — an antenna that does not need a ground plane. My problem: I can't understand why we need to use a ground detailed analysis. Rugged Radios’ antennas are engineered and field tested for optimal reception and transmission in both race and recreation settings! I think you already caught it, but a 5/8 wave antenna is ground plane dependent. Aug 3, 2022 · The GP is the omnidirectional antenna. Consider that many mag mount antennas have some kind of protective coating on the magnet. Jun 7, 2023 · Buy UAYESOK Mobile Base Antenna Ground Plane Kit, VHF/UHF 2m/70cm PL259 to SO239 Ground Plane Mount Antenna, 136-174MHZ/400-470MHZ: Radio Antennas - Amazon. 00 (10%) 10+ In Stock - Fast Shipping. I have one mounted on the left side of the hood on my Toyota Tundra. Use your favorite mobile or handheld antenna as a field-expedient base station antenna! Select from BNC, SO239 or N connections and ground radial options below. Model Numbers: MHB5802S Feb 23, 2012 · The 5/8 over 5/8 is specifically a "no ground plane" antenna; vs just being installed w/o one; and the 1/2 wave is a base loaded whip. tcdyvt unh cvbzz qstbk ljfnfxr pgujg xge yqip jhslrj yvuwxuv