The antenna is comprised a bended feeding strip, 2 parasitic. installing RF ammeters immediately above and below the loading coil in a test antenna. Both antennas are mounted using Breedlove high power puck mounts. Get Quote. antenna users for decades is the very common damage and destruction to radio equipment when connected to a so-called "DC Grounded" antenna system. Aug 5, 2013. The current taper effect is not caused by the "missing antenna length" the coil replaces. A ventriculoperitoneal (VP) shunt is a narrow plastic tube that drains excess cerebrospinal fluid into your abdomen (belly). Primarily, a ferrite rod antenna is used to receive lower frequency signals between 50hz to 50khz. With a shunt inductor, you need to change coil taps and with a shunt capaci-tor, you need to change the capacitors as you change bands. A standard dipole antenna is resonant if constructed with a length of one-half wavelength. Experience our hotel in Obregon, Sonora, Mexico. There are several reasons. For use at base of mobilescrewdriver antennas with high SWR. Mine are 15 inches from the tower at the top and 60 inches at the. I used my AIM-4170 to sweep the antenna when adjusting the shunt coil. In an electrically short vertical, moving the loading higher is almost always an improvement because it raises the point of maximum current, where the majority of the radiation takes place. Click Here to Check Us Out. A current of 1A flowing through the coil creates a core A Given- Coil with number of turns, N 1000 turns Current, I 1 A Core flux, 1 mWb To find-. 00 Postage. SWR on the low bands dropped and the model showed that the electrical efficiency increase to about 80 rather than 40 on the 160m band. Simply press a button and let the &39;screwdriver&39; mechanism do the work. A current of 1A flowing through the coil creates a core A Given- Coil with number of turns, N 1000 turns Current, I 1 A Core flux, 1 mWb To find-. Electromagnetic coil. 00 Postage. 2-1975 (Reaffirmed 1989) CSA Z99-1975 (Revision of IEEE Std 315-1971 ANSI Y32. 2M - Gain & Wave 146 MHz 2. BASE COIL ANTENNAS FEATURES AND BENEFITS Long tuning ferrule allows for greater freedom in frequency adjustment without trimming High performance mobile antenna operates on a No Ground plane (NGP) requirement. Efficiency of the antenna system will be improved over the standard and the Hustler KW resonator. 5 uH depending on the input impedance of the antenna in question But for best results, the finished coil should be between. It is particularly suited for broadcast systems of 100KW and above. Find DX Engineering Coil Tap Clips and get Free Shipping on Most Orders Over 99 at DX Engineering Supplied in a convenient package, these DX Engineering Coil Tap Clips. Whips are long will need trimming tuning. Our primary coil, The Silver Bullet 1000, is mostly for mobile application by allowing a single antenna for multi-band operation. If you are looking for amateur antenna products, you may want to check out the amateur radio catalog from Pulse Electronics. Simple by design, but one must learn to mach it up for the lower bands. A modified version for 20 and 40 meters is described too. Reduced. For the reader printed circuit board antenna a. 0MB - 3905 Century Club. It depends on the shpae of the coil to some extent, some of those coils are to provide a delay in the &x27;signal&x27; going to the part of the antenna past that coil. Troubleshooting the Exciter Field Coils. Davemade short shaft coil antenna with shunt. All things considered, the short top whip is a reasonable compromise for my use. of the loading coil and series loss resistance, shunt capacitance to ground . In this thesis, several antenna designs for 4G coverage in mobile terminals are. MSRP 99. in the coil. The calculation refers to either a loaded 14 wave or a loaded dipole, Building High Power, High Q, Loading Coils. Designed as part of the backpack base travel mobile portable antenna system for transmitting and receiving on HF and HAM radio frequencies. E-HAM Reviews. Antennas; HamAmateur Radio Antennas. miti7 Fundamentals Of Electric Circuits-5th-Edition. Shark Antennas Hamsticks are mono band HF antennas that consist of a fiberglass mast with integrated coil and 48 inch stainless steel whip. Wolf River Coils. US2580798A 1952-01-01 Broad-band antenna system. Clip lead from ground taps up the coil to adjust the inductance used. I got out of HF mobile for a time, then installed the antenna last spring on my F-250 Super Duty. Designed as part of the backpack base travel mobile portable antenna system for transmitting and receiving on HF and HAM radio frequencies. HF - M6DKY vertical inverted; HF - Maria Maluca; HF - Mobile M-Band CoilP; HF. Last edited Mar 1, 2015. Approx 50 per 25&39; spool. Power Handling 10kw. For matching MOBILE antennas, this simple coil. If you do the coil adjustment correctly, you will be rewarded with a low SWR at any resonant point the antenna can be tuned to. Even with a meter it's a bit of a dark art. micromind 3 Nov 30, 2012. Special Order Item HRO Discount Price 673. Weldmart-Onlinereplacement field shunt coils are compatible with Engine Drive Welding Machines SA-200; Continental 4 cylinder F162163 engines (All CODES) SA-250-163 & Continental 6 cylinder engines. The Hi-Q Antennas design is not a cheap copy of the original Don Johnson screwdriver antenna. They have been discussed in the literature for decades. The dipole design offers also an increased depth-of-sensitivity that allows for MRI of dental roots. HF - EH STAR. Loaded Coil portable antenna tunable from 7Mhz to 50-145 Mhz by GM0SDV Mobile Phones & Communication,. In this video I review the 10, 15, 20, 40, and 75 meter Shark Hamsticks and give a solution on how to fix the poor SWR of the 40 meter Shark Hamstick. An HF mobile whip antenna. The Shunt-fed Tower, An Effective Low Band Antenna, uses your beam as a capacitive top-hat and only needs a simple feed network and a good ground system to work DX on 80M and 160M. A standard dipole antenna is resonant if constructed with a length of one-half wavelength. Antennas; HamAmateur Radio Antennas. Shunt Matching Coil. No category Uploaded by saima. One end to feed point, other to ground. C2 has a wide capacitive range but need not be continuous in its coverage, that is, switched fixed capacitors substitute for a prohibitively large variable tuning unit. 2013; 121634-1637; 33. 1 shows the geometry of the monopole MIMO antenna. AntennasTheoryImpedance matching - Antenna impedance matching systems, gamma matches, various match systems. While transmitting with power, I was getting about 1. One end to feed point, other to ground. that of 80 meters, and above. I&39;ve also made coils from 14 solid copper wire, wound around drill bits or broom handles to form them to a shape. Mobile and Portable antennas have always been something of a. On 80 meters, the bugcatcher with the largest coil is only about. shunt coil of about 5. Therefore, the coil can be easily manufactured as a PCB. You can also find out how to order and contact Pulse Electronics for your antenna needs. Oct 28, 2017 4 tech99. Wilson Antenna 200154B Features. The 80m and 75 meter bands add-on coil for all Super Antenna MP1 series antennas. This strap is used for operation on the 10, 12, and 15 Meter bands. I make my own using enameled wire wrap 7 turns around the threads of a half inch diameter bolt. Build with top-rated, quality components, we offer . Eaton shunt trip coil replacement kit. The voltage across the loading coi can be quite high. The screwdriver portion works. Wind about 6ft of RG-213 or RG-8 into a coil (6 to 8 turns). Product is not in production. I tried by winding a coil of 12 magnet (enameled) wire 9 turns on a 2 inch diameter air wound. A strategy for matching is to create an L network being a capacitive reactance in series with the base of the antenna, and a shunt inductance. The 80m and 75 meter bands add-on coil for all Super Antenna MP1 series antennas. When properly installed on your vehicle the Model 75 "Stubby" will provide continuous coverage from 3. The antenna consists of two cross-shaped magnetic core, four segments of coil, and two feeding sources. New York McGraw Hill. HF - Dipolo Verticale 40m. 1 Mobile Applications Nearly all vehicular antennas are monopoles mounted over a (relatively) flat body surface (as described above). Find many great new & used options and get the best deals for Uayesok 27 Mhz mobile CB Antenna 40. When it opens again, the stored energy supplies the load (and only the load). Mobile Antenna Mounts. Our field shunt coils are all copper; we offer no aluminum coils. At VHF low-band, a quarter-wave monopole can be 2. Once again this new series of mobile antenna has solved all the problems of Don Johnstons original screwdriver design. The spacing of the shunt wires from the antenna affects the impedance seen at the feed point. 50 feet of 2 conductor control cable "Home Package only" 4 snap-on 31 material type chokes for antenna control cable. The whip. Il contenuto YouTube non pu essere visualizzato a causa delle impostazioni dei. The shunt antenna of claim 1, wherein the aerial separation of the antenna element and the lower plate serves to further produce an inductor effect. These antennas come with a shunt coil for matching on the lower bands and my 100HP at . Therefore, the coax is part of antenna system and changing the coax length will change the SWR. Solution put a coil between the base of the aerial and ground. Mobile Installation Clinic (PDF File, size 2. I just set up my mobile station in my F-150 Truck. 14 Diameter Support Fiberglass bicycle flags are readily available and inexpensive. Would perhaps a vertical without radials be possible and not a compromise Figure 1 My small mobile home. This was one of the first experimental coils I built to finally arrive at the perfect match. 5 to 30 MHz - 250 Watts PEP. and shunt capacitance make up an L net-work that transforms the low impedance to 50 . tells you how the amout of inductance your loading coil will need to have. DC motors are classified based on the connection between the field winding and armature winding. With loading (coils with a mobile whip, or coil loading or "capacitive hat" with a fixed vertical), the value of Xa can be adjusted downward, often into the range of the hairpin match. Roll your own Coil - 1. Automatic Lift and Lay Mount - Supports MT-1 Antenna Bracket. Shunt trip 1 Shunt trip 2 Positive Negative Positive Negative Digitrip (Fig. THIS IS The model MC80 SuperCoil by Super Antenna. NMO Connection. Great Mobile Antenna Time Owned more than 12 months. I really like mobile operations and have tried many antennas. This document describes how HF (13. Many hams don&x27;t have room for a full 160m dipole, so I started designing coil-loaded antennas, and discovered it was relatively easy to make a single element work on both 40m and 160m, with a length roughly that of an 80m. Your coil between the antenna feedpoint and. The SG-230 attempts to match the feed point impedance of the antenna by inserting additional inductance andor capacitance in series with the feedline, and parallel capacitance if necessary. DaveMade short shaft coil antenna with shunt 105. Feb 15, 2019 Review Category Antennas HF Mobile & Accessories. This is required to reduce your ground losses and radiate a decent signal. 00 Postage. An additional 40 MHz shift and 0. It has gain and wave angle comparable to a full-sized 14 ground plane antenna with radials. There is a specific procedure which must be followed if proper adjustment of a shunt matching coil is to be achieved (read that as low SWR over a very wide range of. com 1 605. 4mm, copper thickness loz1. These antennas come with a shunt coil for matching on the lower bands and my 100HP at . with a 1,000 uf. Off-Center-Loaded Dipole Antennas - - Hall, K1LPL, QST September 1974 Designing A Shortened Antenna - - Lopes, CT1EOJ QST October 2003 Homebrew Your Own Inductors - - Johns, W3JIP -QST August 1997 Optimum Design of Short Coil-Loaded High Frequency Mobile Antennas - - Brown, W6TWW Compendium Vol. 61) over the operating range of an 80 through 10 meter, remotely-controlled, HF mobile antenna. It is used to tune out the capacitive. On 80m my Tarheel 100HP is over 1S unit better on transmit compared to a Hamstick and on 40m its about 1S unit better. Plus, it connects the antenna to DC ground to bleed off, or shunt, any static electric charge on the antenna to ground. Scorpion Mobile Antenna. Vertical Antenna, HF, 6BTV, High Performance System, 80, 40, 30, 20, 15 and 10M, wRadial Plate, OMNI-TILT Base, SO239 Bracket, Cable, Hardware, Kit. A rear view of the antenna shows the antenna with the shunt strap in place. Jul 2, 2014. Designed as part of the backpack base travel mobile portable antenna system for transmitting and receiving on HF and HAM radio frequencies. Max Height, Black Whip, Open Center Coil, Each. Mobile Installation Clinic (PDF File, size 2. The Little Tarheel HP is the better antenna for a this size. Dipole Installation Photos. Your coil between the antenna feedpoint and. HF - Vert leggere x vacanze. Tripping on Fault (Undervoltage, Overcurrent etc) 3. Oct 28, 2017 4 tech99. No room for radials. Might need to cut a couple. Shunt feeding the tower for 80 and 160 meters Modeling a shunt fed tower in MMANA. Clip lead from ground taps up the coil to adjust the inductance used. 2 GHz, and high-band 2. 5 GHz in free space. I recently purchased a new Wilson 1000 magnetic mount from Cheapham. It will look as good years from now as the day you bought it. Deploys in one minute by one person with no tools needed. After moving to temporary accommodation back in the UK, I decided to get back on the air and blow the cobwebs off the Old Rig. Quick View. In this video I review the 10, 15, 20, 40, and 75 meter Shark Hamsticks and give a solution on how to fix the poor SWR of the 40 meter Shark Hamstick. 00 7. Mike WU2D. High idle 1,550. In the early 20th century, Tesla coils provided high frequency and high voltage electricity for radio transmission, X-ray machines, electro-therapy and early particle accelerators. Good multiband mobile antenna Time Owned more than 12 months. Antenna, Mobile, Vertical, Black, NMO Mount, 2m, 70cm, Whip and Coils, 150 W, 40 in. Oct 4, 2006 The small "B-coil" antenna provides the ability to transmit and receive Groomed for use in public safety and other communications applications, the Antenex B1322W wideband mobile antenna operates. Special mount for 38 x 24 thread antennas with 6. Johns, W3JIP Air-dielectric inductors can be made quite easily at home. It worked perfectly, and the antenna tuned up nicely on all bands, 75 through 10 meters. A bottom loaded antenna like the Wilson 1000 will work reasonably well on the roof of a mobile, but put it on the trunk where the roof partially blocks the signal, and. The wire is. I have it working with a Tennatronix ITT-1, push a button on the radio and it tunes perfectly. BB4502N 12. 400 MHz and 10. 4, the loss tangent of 0. If you are feeding an unbalanced antenna such as a mobile whip, groundplane or colinear antenna you can add a common mode choke. My 160 Mobile Antenna. 5 diameter and 2 long. The coil is 20 turns, 12 solid, 1 & 14 inch I. shunt capacitive tuning works. A DC motor is an electromechanical device that converts electrical energy from electrical supply into mechanical energy to connected load by a shaft, by using direct current (DC) as the electrical energy. N17J Projects. Sealed Shunt Coil 8 Turn Shunt Coil is Stock. Similar to the popular screwdriver antenna but at a greatly reduced cost and without. Plastic end supports are used to eliminate . Parallel inductance (L2) resonates with the effective antenna shunt capacitance up to the point where the inductance limit of 25 microhenries is reached. An ATU should be used. A dual-band rectenna using broadband Yagi antenna array for ambient RF power harvesting. Wilson 500 Magnet Mount CB Antenna 54 12" Base Loaded Coil Antenna w coax, 2000 Watts P. Scorpion Mobile Antenna. 05 seconds response time, 260 Vac rms minimun voltage. Dipole Installation Photos. SKU DM-short. It also requires an antenna analyzer like the MFJ-259B shown at right. 806 - 940 MHz. 50 75 Ohm loads. In the U. 22 de nov. com 1 605. Simply press a button and let the &x27;screwdriver&x27; mechanism do the work. Remove the are 3 screws in the top Delrin Cap. View the manufactures page for MFJ22. Join Date. This antenna can be very hard to notice at all if you set it up in a stealthy way. Wilson 5000 Magnet Mount CB Antenna The Wilson 5000 is. Some coils are as small as 32g wire around a 2mm form. Go 6 and 10 meters mobile with your magnetic-mount 2-meter whip. The verticals will also be adding with broadside gain, and the horizontal component will also be cancelling. You will. My 32&x27; tower looked like a 60&x27; pole Shunt Feeding a Tower. The antenna uses a high quality copper contact ring to make contact with the loading coil. This Browning CB land mobile antenna has a 49 inch stainless steel whip and a premium quality solid brass chromed base. But, this is not my actual shunt coil I use. 219,00 ICEPOWER 250ASX2 Class D Stereo Mono. It tells the impedance presented in parallel mode is 24 resistive 54 reactive ohms. of a wavelength the gain distribution will look like a flattened doughnut. 5 4 mm 3 and requires a ground clearance of 9. Review Summary For MFJ-1640T HF Stick Mobile Antenna. best car shipping company los angeles, la sirena plugtalk
The length was chosen simply based on the length of the wire traps used to wind the coil. . Mobile antenna shunt coil
View the manufactures page for MFJ22. 70 13. The same principal applies to the wire wound fiberglass whips. 5" copper master mobile mast with a 6" section of mini8 braid going from the mast to the. 6Size 33 inchesPower rating 200 wattsColor BlackCable AssemblyMount Order SeparatelyThe most commonly used cable assemblymount is the. They are covered by one or more of the. Sealed Shunt Coil 8 Turn Shunt Coil is Stock. A coil works too. Price 39. Shunt matching coil with solder lugs. A physically short broad-bandwidth multiband vertical antenna with 50 ohm input impedance and 25 foot square footprint for 160, 80, 40 and 17 meter radio bands. A base loaded DX Commander for use on 4080160M bands, with the use of the 40M element that&x27;s 14 wave on 40m (11. There are four optional HF coils available HVC7 (40m), HVC14 (20m), HVC18 (17m), and HVC21 (15m). The Workman WHF40 is a 7 MHz mobile vertical antenna rated at 250 watts peak power. Gamma match antenna is an antenna 12 additional lambda with the impedance matching more flexible arrangements (var capacitor) by sliding through the gamma matchroad. A vertical antenna (effectively half a dipole operating against a ground plane) is resonant at one-quarter wavelength. Don&x27;t pay any attention to me. Key Features. 01 at 1kV caps to a bonding wire to the base. A 50- impedance of antenna is needed for maximum power transmission. If the antenna beyond the coil has low self-impedance compared to the impedance of stray capacitances that shunt current from the coil to "ground", currents at each end of the coil will be essentially equal. 5 Stainless Loading Coil PL259 Connector at the best online prices at eBay Free shipping for many products. HF - W3DZZ Multibanda. If you are looking for amateur antenna products, you may want to check out the amateur radio catalog from Pulse Electronics. 8 To ensure that the impedance of the antenna will match the output impedance of the radio, it is a good practice to always add one PI shape matching circuit foot print (3 components, SHUNT-SERIAL-SHUNT) that can be used to define the matching circuit that will maximize the power transfer to the antenna. Loaded Coil portable antenna tunable from 7Mhz to 50-145 Mhz by GM0SDV. UL924 Emergency Lighting BypassShunt Relay, 10 Amp DPDT, 24 Vacdc208-277 Vac Coil, NEMA 1 Housing Item 0189062 CAT ESR2402D UPC 110. Try to sepa-. There are published reports in the reputable ARRL handbook from testing done with mobile coil loaded antennas. In fact if it is base loaded it may be closer to 10 Ohms. COMTEK SYSTEMS 2011. This document describes how HF (13. A rear view of the antenna shows the antenna with the shunt strap in place. 51 or less. As known, there is a very wide variety of electronic handheld devices, used for communication purposes. A physically short broad-bandwidth multiband vertical antenna with 50 ohm input impedance and 25 foot square footprint for 160, 80, 40 and 17 meter radio bands. VHF Mobile Antenna, Black Coil, Field Adjustable, Frequency Range 148 . Shunt procedures can address pressure on the brain caused by hydrocephalus and relieve its symptoms such as gait difficulty, mild dementia and lack of bladder control. Fast Delivery Secure Payment Customer service. rabbiporkchop, Jun 27, 2016 1 Quote Reply. by Miles Davi Thu, 04 Mar 1999 040000. Review Category Antennas HF Mobile & Accessories. , electrodynamic accelerators (EA) and converters. Our shunt coil comes installed in a gasket sealed polycarbonate enclosure manufactured by Bud Industries. At the base of the tower, carefully open the jacket of the coax feeding the beam and solder a small bonding wire to the coax shield, waterproof the cut, and bond to the base of the tower. If you have a tower, you may elect to shunt feed it (with your HF beam antenna in place) and. The store will not work correctly in the case when cookies are disabled. Find many great new & used options and get the best deals for Hustler SCB-S BK Mobile CB Antenna w Coil & Stainless Steel Spring, 1000 Watt at the best online prices at eBay Free shipping for many products. At the same time, the space available for the mobile system antenna has shrunk, lowering the antenna&x27;s efficiency. 2 is a partially cutout view of the shunt antenna; FIG. 5mm Black Chrome Stainless Steel Whip, Black Coil, 200 Watt, 26. The capacitance of the capacitive hat can be approximated from. Deploys in one minute by one person with no tools needed. There are several reasons. Before you get that far check all the splices inside. Mobile Installation Clinic (PDF File, size 2. 3" diameter coil with 14 gage tinned copper wire wound at 10 Threads Per Inch. 95 . A DC motor is an electromechanical device that converts electrical energy from electrical supply into mechanical energy to connected load by a shaft, by using direct current (DC) as the electrical energy. One or more of the brush holders need to be tweaked (rotated) slightly in one direction or the other. 5 uH and 1. Initial calculated values came out to be 349 pF for the input cap, 1. High idle 1,550. Mind you, this is on a wagon - results will. Questo sar di interesse per operatori radio e gli ascoltatori ad onde corte. HF - Dipolo multibanda corto. Part Number LSN-NMO2-70C. All of our antennas come with 20&x27; control cable, standard up and down switch, ferrite core, fuseholder and fuse, 38-24 stud and. The capacitor on the transmitter side is intended to cancel the reactance presented by the shunt inductor and to touch up the resistance. The major part focuses on a comparison study of dipole antennas and loop coils at frequencies of 128, 298 and 400 MHz. HF - Verticale Dinamica 6m40m. Some multiband antennas can operate across several bands, but these tend to be more expensive and might. Eight turns works perfect for 40m, and 4 turns for 20m. A design of inductively coupled wireless power transfer system with coupling coil optimization Conference INTELEC 2015 - 2015 IEEE International Telecommunications Energy Conference Authors. Lastly, you can use a shunt base coil to match any mobile antenna, even a monoband one. 8, a number of wire lengths and tapping points are available. 5 diameter and 2 long. Delivered from France to Italy in less than 24 hours (via UPS, with surcharge), it's a sturdy, beautifully built, very. The G4AXP VK6MC 160 meter Vertical Antenna. Vertical Antennas, William Orr, W6SAI and Stuart Cowan, W2LX. The most EFFICIENT HF TUNABLE Mobile antenna is the Hi-Q DASH 4. Loaded Coil portable antenna tunable from 7Mhz to 50-145 Mhz by GM0SDV. 95 and 69. 62" X 18" taper whip with corona tip. HF Shunt Antenna Program. If there&x27;s only one, the coil&x27;s other wire must be internally. Quick View 31 Material Snap-On Common Mode Choke for Coax or. Barry K8NWB----- On Saturday, June 27, 2020, 020108 PM. This antenna is described in the Demonstration 5 from Ted Hart. It will look as good years from now as the day you bought it. E-HAM Reviews. Estimated Ship Date Today. Quick View 31 Material Snap-On Common Mode Choke for Coax or. This is par ticularly true for mobile HF antennas. 25"CB 18" long tube The fiberglass rod has 4 holes, which are 14 holes. Loading Estimated Ship Date Tomorrow. Everything you need to know to match an HF mobile antenna is in the Antenna Matching, and Antenna Coil Adjustment articles. DX Engineering Vertical Antenna Matching Network features include Precision-machined coil tube Highest quality 12-gauge solid tin coated. 75 to 1. Find many great new & used options and get the best deals for 392 M HF Mobile Antenna Coil All Band Ham Marine Mars Cap Military 80 10 Meters at the best online prices at eBay Free shipping for many products. Last edited Mar 1, 2015. Lower Mast Size -- 1 12". Allan Goulbourne. Plus, weve got a full line of accessories for Hustler antennas, including bases, radial plates, radial wire. So add inductor coil (loading coil) is to cancel out capacitive reactance to make the antenna electrically longer. The ARRL Antenna Book. 13 de mai. vertical antenna, made from three 10 ft. I too would like to know if I can put a shunt coil between the antenna feed point and ground (radial system) on a 42ft or 43ft vertical with the SGC-230 Smartuner (similar to the Q-Coil on the Butternut Verticals). Make any necessary adjustment s to the routing of your coax, and inst all any shunt coils, series coils or cap acit ance as recommended by the screwdriver antenna manufacturer. section coil forms, I use 114-inch-diameter pipe so the antenna can be mounted reasonably close to the vehicle. Plus, it connects the antenna to DC ground to bleed off, or shunt, any static electric charge on the antenna to ground. Antenna, Mobile, Vertical, Black, NMO Mount, 2m, 70cm, Whip and Coils, 150 W, 40 in. Yeah, I seen those. The 80m and 75 meter bands add-on coil for all Super Antenna MP1 series antennas. All things considered, the short top whip is a reasonable compromise for my use. Designed around a seriesshunt variable LC network protected inside a flower pot. Shunt matching coil with solder lugs. Description At WOLF RIVER COILS LLC we build quality antenna coils that are easy to tune and easy to install. To demonstrate the technique for matching such an antenna, let&x27;s use NEC-4. . briannaamor onlyfans