The Cobwebb, designed by G3TPW Steve Webb, uses a type of folded dipoles with open ends. Spark Gap Transmitters were used around the time of the great disaster of the Titanic. Any content, trademark/s, or other material that might be found on the thathipsterlife.com website that is not thathipsterlife.com property remains the copyright of its respective owner/s. Amateur radio has progressed, and continually changed since the spark gap transmitters of that time. The G5RV is an excellent choice for the 20 meter band. Post #1554. HY- Gains Quoted numbers not moine . As a small thank you, wed like to offer you a $30 gift card (valid at GoNift.com). If you have taken an amateur radio exam, then you have undoubtedly learned about the properties of a folded dipole. Some tightly wound wire may also coil back on itself, regardless of what it is made from, or coatings. The inspiration comes from the Halo antenna, a popular horizontally polarized omnidirectional radiator for VHF and the Cobwebb antenna, a horizontally polarized omnidirectional radiator for HF. That folded dipole is the basis of the Square Halo. for 0.64 wavelength spacing is shown in Figure 7. This antenna covers 80 to 6 meters with low feed point impedance and will work with most radios, with or without an antenna tuner. In this short, well-made video, "taverned" shows us how he used a mag mount antenna, a simple C clamp, and a basic ground system to convert his mountain bike into a mobile station. What could be more simple 40 thru 10 Meter Zepp Antenna Don't let deed-restricted properties (HOA/CC&R) stop you from enjoying Amateur Radio. #1 I want to build a "Bambi" or full wave loop antenna with 27.38500 as my center of the band. Why not equip your bicycle for 2 meter/70 cm mobile operation? A 20 meter band 1/4 wave vertical antenna with feed point at 10m height. construction requirement should not be too burdensome. You can then apply the same principle for the 10 meter band and place it within the square shape of the 20 meter dipole. the horizontal ones) is up to you. In this video from AC2RJ, we see how some well-placed trees, a camera tripod, a telescoping fiberglass mast, and a "V" antenna can get you on the air without a lot of effort. Apartment, Attic, HOA and small spaces ham radio a Ham Radio RF Laptop Computer Interference Fix. directivity and they can still be small and simple. Both dipoles can be fed with a single 50 ohm coax cable, without any matching network. Automotive Garages| But 1.0mm2 or 1.5mm2 is also good. When building a loop antenna, I keep wondering if this just for RX, because it seems to me that connecting the center load at one end and the shield at the other will blow my transmitter, so I'm afraid. /cq43ax101/Helical_Beam.html 43AX101's instructions for building a two-element helical beam for eleven meters; . It can by thought of as a Yagi Antenna with bent elements and without directors.". ----- Thanks for joining us today. For the ferrite core version, solder 5mm hole ring terminals first to the chokes coax center and shield. This sketch shows a semi-exploded view of the antenna. Before tuning, place the Square Halo high enough so that the ground and surrounding objects have as little influence as possible. Don't let deed-restricted properties (HOA/CC&R) stop you from enjoying Amateur Radio. This might be a good design for the AMer But be ware of the cable quality. Our Square Halo uses half wave folded dipoles which do not need any matching at all. Please don't attempt this antenna if you are not entirely sure of your safety. How to build a limited space 10 and 20 meter band Square Halo DX antenna, How to setup a webSDR as your secundary receiver, A different approach to tuning the Cobwebb antenna. Build a PVC Ham Radio Antenna Click here PVC Ham Radio Antenna "The picture is an Amateur (Ham) Radio antenna that is about 90 percent PVC pipe and fittings. If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=2zWb-KnkGdY. These spreaders must protrude at least 190cm from the center of the antenna and must not be made of conductive material. 4. A TV antenna rotator and mast are all you need for this fine performer. more gain than the EDZ, and at a lower take-off angle. of the bidirectional designs presented previously, especially for the AMer Read about this very effective 1.8-30 MHz common mode choke. Gain -0.5 dBi at 10 degrees take off angle. provide gain and directivity. be feed directly with 50 Ohm coax (preferably through a balun) and provides Within that gizmo is the 50 ohm to Hi Z matching device. be had with the right spacing. Strip the 5" piece of 18 gauge (or whatever wire you have) and solder a side to each of the driven elements. AM in that it offers plenty of room to spread out and generally, freedom For Amateur Radio Antenna Topics and Discussions, stay here. 1996-document.write(new Date().getFullYear()) The DXZone.com - Terms of Use, Copyright & Privacy Policy, [ Hits: 4760 | Votes: 17 | Rating: 5.16 ], [ Hits: 4504 | Votes: 13 | Rating: 5.23 ], [ Hits: 1338 | Votes: 4 | Rating: 9.75 ], [ Hits: 18436 | Votes: 13 | Rating: 6.54 ], [ Hits: 8077 | Votes: 9 | Rating: 6.68 ], [ Hits: 6633 | Votes: 6 | Rating: 7.67 ], [ Hits: 33617 | Votes: 37 | Rating: 5.3 ], [ Hits: 11366 | Votes: 7 | Rating: 4.86 ], [ Hits: 4356 | Votes: 11 | Rating: 5.28 ], [ Hits: 2678 | Votes: 6 | Rating: 7.33 ], [ Hits: 3640 | Votes: 4 | Rating: 4.75 ], [ Hits: 63659 | Votes: 93 | Rating: 6.54 ], [ Hits: 3095 | Votes: 4 | Rating: 6.25 ], [ Hits: 49572 | Votes: 144 | Rating: 7.16 ], [ Hits: 5995 | Votes: 21 | Rating: 4.7 ], [ Hits: 5512 | Votes: 7 | Rating: 4.57 ], [ Hits: 26379 | Votes: 39 | Rating: 4.8 ], [ Hits: 27367 | Votes: 65 | Rating: 5.09 ], [ Hits: 86172 | Votes: 71 | Rating: 5.59 ], [ Hits: 4433 | Votes: 8 | Rating: 3.25 ], [ Hits: 4578 | Votes: 11 | Rating: 7.82 ], [ Hits: 13666 | Votes: 16 | Rating: 3.44 ], [ Hits: 80287 | Votes: 54 | Rating: 5.08 ], [ Hits: 13342 | Votes: 5 | Rating: 6.4 ], [ Hits: 55774 | Votes: 12 | Rating: 6.91 ], [ Hits: 78581 | Votes: 53 | Rating: 6.37 ], [ Hits: 149191 | Votes: 203 | Rating: 6.34 ], [ Hits: 5830 | Votes: 6 | Rating: 9.17 ], [ Hits: 10832 | Votes: 10 | Rating: 7.61 ], [ Hits: 11265 | Votes: 6 | Rating: 5.17 ], [ Hits: 3064 | Votes: 8 | Rating: 7.54 ], [ Hits: 2939 | Votes: 6 | Rating: 5.83 ], [ Hits: 15492 | Votes: 8 | Rating: 4.62 ], [ Hits: 28119 | Votes: 24 | Rating: 7.12 ], [ Hits: 7077 | Votes: 7 | Rating: 7.28 ], [ Hits: 80772 | Votes: 41 | Rating: 4.88 ], [ Hits: 6755 | Votes: 4 | Rating: 5.75 ], [ Hits: 51089 | Votes: 24 | Rating: 6.04 ], [ Hits: 5130 | Votes: 9 | Rating: 4.67 ], [ Hits: 46433 | Votes: 33 | Rating: 4.27 ], [ Hits: 1728 | Votes: 14 | Rating: 5.91 ], [ Hits: 21197 | Votes: 21 | Rating: 7.38 ], [ Hits: 19541 | Votes: 393 | Rating: 7.53 ], [ Hits: 22928 | Votes: 19 | Rating: 4.95 ], [ Hits: 137643 | Votes: 121 | Rating: 7.58 ]. are already a full wavelength (about 34 feet). antenna will only work on ten meters. but provides a nice 6 dB gain. The antenna is credited to Les Moxon G6XN, and while it is well known by most ham operators, many CB'ers may be unaware of this design. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); This Blog is mainly dedicated to Amateur Radio (Ham radio) and contains external articles and personal esperiences. antenna references (ARRL Antenna Handbook, etc.) Yet there is a horizontally polarized antenna for 10 and 20 meter band, which is suitable for a limited space. The feed point should be mounted approximately 100cm from the point where the spreaders intersect. In no way does thathipsterlife.com claim ownership or responsibility for such items, and you should seek legal consent for any use of such materials from its owner. If you put it a circular shape, with the ends just not touching each other, you get the famous Halo antenna. They are a simple design and offer more gain than a half wave dipole antenna. All you need is two rabbit ear antennas from Radio Shack, two CATV baluns, four feet of 3/4" CPVC pipe with one tee, and a bit of time. Elements are added in the same way, but these at 5% shorter. Mobile Ham Radio installation from Jeep Wrangler t Ham Radio Project: Ham Sticks on a Motorcycle, 2.4 GHz Dual Feed Helix Antenna for QO100. NONE. as a EDZ on ten. high voltage at the end of the antenna. For the latest Amateur/Ham Radio news and information, please visit these websites: http://www.HawaiiARRL.info. at the top (with a relay or by hand), this antenna will work well on 20 Main goal is to review and promote ham-radio web sites, classifying them in categories. I value your comments and suggestions. How you support the wires in the loop (most especially Like 2x 0.75mm2 is already fine if you work with 100 watts. Use wire of similar nature. 1009/ F(MHz) for the reflector 1005/ F 995/ F for the additional Directors and ).22 wave length for the Spacing. This is because the bands on the left (6 and 10 Meters) have a greater operating bandwidth (>3% at the design frequency). You can then choose a fancy color or one with glitters! NA4RR Hexagonal Beam Antenna Based On The G3TXQ Broadband Design 850-329-8783 6 Band hexagonal beam antenna covering 6, 10, 12, 15, 17, and 20 meter bands shipped to your door for only $660 ($600 + $60 shipping) The NA4RR Hexagonal Beam (commonly referred to as the hex beam) is a popular antenna based on the G3TXQ design. one-half wavelength to anywhere from 0.64 to 0.75. Kitchen 3d Model| But a dipole at 20 meters is more than 10 meters wide. Red Roof Inn Busch Blvd Tampa Fl| Combine this To create this article, 17 people, some anonymous, worked to edit and improve it over time. In the box you mount an SO-239 chassis part to which you solder the other end of coax. Wireless is what they called it back then, and still to this day, wire antennas are sending signals out on the airways. However, a loop with the appropriate This band has been nearly devoid of AM activity I did a MMANA simulation of the Square Halo on 20 meter band at 10m height. But making it circular is not necessary. As I've stated before, experimentation is what it's all about. http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon). category, share your design with us. Palm Desert Furniture| Wells Fargo Furniture Credit Card| Of course there are many other antenna designs that can be used I cut one down for the 11 meter band long before I became a ham. Zen Interior Design On A Budget| A neat design that only requires one support is the Bisquare. frequency bands is the Lazy H. The name describes it,an H turned on On 10 meters, these dimensions are workable 49:1 End Fed Half Wave Multi-Band Antenna. It strongly reduces high frequency currents flowing over the coax shield. for most hams that own any real estate larger than a postage stamp. You dont have to cut anything, just change the length of the folded back cable ends. between 40 and 10 meters and will have gain on 20 through 10. Gizmotchy 10/11 Meter Beams We recommend the use of a Gizmotchy Universal Antenna Support Kit for beams with 5 or more elements. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); How to build an Hexagonal antenna in 3 hours, Hexagonal Wire Beams for 40-10m from DL7IO, different mono/multiband designs with building descriptions and model files for EZNEC, An HexBeam antenna project, a 2 full elements on six bands. However, if only three bands are desired or five bands, the same approach would apply for the bands you want to equip. Use it to try out great new products and services nationwide without paying full pricewine, food delivery, clothing and more. 4.3 out of 5 stars 12. . Perkins School For The Blind History| The DXZone is managed by ham radio operators with ham radio operators in mind. This is what I want to build for my 10 meter half wavelength vertical antenna. 10-Meter MoxBeam, KG4JJH 1 of 12 10-Meter MoxBeam Build this Moxon antenna using some unique materials & be ready for Solar Cycle 24 was excited to read on the Amateur . The antenna is similar to a 2-element Yagi with the element ends folded toward On the 20 meter band, the SWR over 250 kHz remains below 2:1. For the latest Amateur/Ham Radio news and information, please visit these web sites: http://www.HawaiiARRL.info. With this arrangement, the antenna will work well . But, what if (Simulated with MMANA) Halo antenna as inspiration Shortened multiband dipoles for 10 and 20 meter bands are widely commercially available. At early of 90's, when I was a CB operator, I begin to build a serious DX antenna. Why not equip your bicycle for 2 meter/70 cm mobile operation? You can easily make a folded dipole from figure eight wire speaker cable. http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon). provides 3-4 dB of gain as can be seen in Figure 1. Then secure the dipoles to the spreader tubes with a second cable tie. Technically they represent the same thing with one big caveat. Your email address will not be published. Loop antennas are a favorite among hams. % of people told us that this article helped them. Is it possible to use a car port for the radials with a vertical antenna? Your email address will not be published. a little longer (1.28 wavelength, just like the EDZ) another 1-2 dB can To fit this antenna in an attic space, I used an inverted 'v' configuration. https://hamradiohawaii.wordpress.com. Solder one side of the RG-58 to a driven element and the other to the opposite driven element. https://amateurradionewsinformation.com (Amateur Radio News &, I'm the retired news director for Pacific Radio Group (Hawaii Island), with over 40 years experience in the commercial broadcast field. It is a single coax conductor, 5% longer than the total length of the dipole. That's it, you now have an EDZ Lazy H. It will also work well on all bands For the latest Amateur/Ham Radio news and information, please visit these websites: http://www.HawaiiARRL.info. long! They couldn't make the connection with the antenna mounted on their 5 watt handheld but could with the more efficient mag-mount mobile antenna. You can squeeze a little more gain out of the Lazy-H. 11m dipoles are way to simple and easy to make yourself. In my experience, I've used more than a few receiving loops successfully for several hundred-mile connections utilizing an antenna tuner and low power (QRP) output. All tip submissions are carefully reviewed before being published. For the latest Amateur/Ham Radio news and information, please visit these websites: http://www.HawaiiARRL.info. The tuning takes the utmost of your patience, but once it is done, you have an easy to use five band antenna. It offers good gain and good attenuation against signals coming from other directions. The materials used here are stainless steel or aluminum for longer durability. Consult any ARRL handbook for FAQs about antennas. Pvc Shower Panels Uk| . I will have to trim it to resonance. Antenna for Condo Backyard-Stealth. that provide the details http://www.arrl.org. Amateur Radio Bicycle Mobile Setup. Shabby Chic Decor Pinterest| At 10 meters I measured the bandwidth over 400 kHz. Some wires also have a tendency of having sharp ends when cut. Steel is the worst. Elk River Furniture| I'm a FCC-licensed Amateur/Ham Radio Operator holding the Extra Class License (KH6JRM). Attach both dipoles to the feed point first. USe Save my name, email, and website in this browser for the next time I comment. The disadvantage of this design is that the elements are very difficult to tune because in addition to the total length, you also have to move the short-circuit point back and forth. Related Gallery: The Square Halo is held in place by four cross-shaped spreaders. But building (partly) yourself is actually quite easy, costs half of a new Cobwebb and is also fun to do. the upper and lower elements, as shown in Figure 8, DO NOT reverse the connections and feed at the center point. It's a cylinder about 2 to 3 inches tall and about an inch round. For Amateur Radio Antenna Topics and Discussions, stay here. here is the same 'EH antenna for 11 meters by 88HK7/CO6HK' instruction on 10SD156 Martin's blog. with an even better signal) on 10 meters. This type of antenna provides 3-4 dB of gain as can be seen in Figure 1 . The special thing about this antenna is that it is easy to expand to more bands. A Five-Band, Two-Element Quad for 20 through 10 Meters QST April 1992, pp. Kitchen And Bath Dallas| It is a nice alternative to some Keep notes on what you do so you can repeat it, explain it to others and even build upon it! 30 feet is almost one-wavelength above ground on 10 meters. all you really need is just a long piece of coax with a pl259 on one end to connect to your radio. (2 m) Vertical Spreaders: 5 ft. (1.5 m) Shipping Weight: 14 lbs (6.3 kg) are made of wire, have a design frequency of 29 Mhz since this is where You dont want the elements to slide across the spreader tubes with a little wind! Dodge Avenger 2016 Interior| https://bigislandarrlnews.com. 4 pieces 22mm fiberglass tube 150cm long. Place a ring connector with a 5mm hole on each side of the cut wire. A lot of cheap cable is CCA, which is aluminum with a very, very thin copper layer and like impossible to solder. aloft with just one rope. its a nicer more robust quad in a storm that one with such lopsided dimensions. put heat-shrink over the join. The aluminum tube with which the antenna is attached to the mast is made for this. But with 7m to 8m wide, they're still large for a small roof or garden. Add an antenna "tuner", a sturdy rig, such as the Yaesu FT-817, a microphone/cw key, and a simple grounding system, and you have a fully functional, nearly invisible ham station in your backyard. into the next (new) sunspot cycle, everyone is awaiting for the attendant You can even convert an old 23 or 40 channel CB (11 meters) transceiver to work on 10 meters. The name of the game with antennas is not resistance but impedance. How Do You Clean Dog From Carpet| With the tips of the driven element and reflector bent to nearly touch, it squeezes the width of the antenna into a much smaller space. If you have the space (which is likely for some), here is the 20 metre option: This site is sponsored by: AdaptiveBMSCAPA Thule Roof Rack Installation| you should have enough junk laying around to make your own and if you don't then it shouldn't cost you over $10 to build. the second driver was an a few inches longer and for vertical polarization spaced 4 inches in front of the horizontal driver . It consists of three elements viz. I terminated the outer screen into a crimp and http://www.arrl.org/arrl-audio-news (a wee, If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=MXTYTytR56A. Performance on other HF Amateur Radio bands is good enough to qualify as stand alone HF antenna if you can only erect one HF antenna. Now that we are officially IT System Engineer, recently started having fun with morse code and Raspberry Pi. the ground to keep the loop from spinning around. Below is one example of how to mount a 10 metre Yagi antenna in a loft to help achieve a greater contact range. /cq43ax101/Helical_Beam.html 43AX101's instructions for building a two-element helical beam for eleven meters; . Bathroom Drains Stink| As you can see from https://amateurradionewsinformation.com (Amateur Radio News & Information). I found that the Halo was a fraction better than the vertical in terms of reception. Sound Card Interfacing for RTTY, PSK31, and SSTV, A low cost 600 watt ultra-linear amplifier, VE7AVV YAESU FL-2100Z Amplifier Repairs, Fine tuning your Multiband Hustler Vertical, Reflector Loop Length (4 X L1 side) = 36 0, Driven Loop Length (4 X L2 side) = 35 1, Director Loop Length (4 X L3 side) = 34 0 (2 each), Licensed Amateur Radio operator in 1996 as IW5EDI, active member of, Class 1970, married with two childrens, love experimenting and antenna home-brewing. They can be directly fed with 50 ohm coax. RG-213: Roll up 6 times over a diameter of approximately 15cm.RG-58: Roll up 8 times over a diameter of about 10cm. Bernie does an excellent job of explaining the pros and cons of this popular HF antenna from the late Louis Varney (G5RV). Why? and extend its length to about 1.28 of a wavelength overall (0.64 for each If you drill two holes of 5mm at a distance of 4cm from each other on the bottom of the housing on the opposite side, you can insert two stainless steel M5 screws through the holes and ring terminals. A beam type of antenna at a height of 70 feet or more will provide greatly superior performance over the same antenna at 35 feet, all other factors being equal. Butternut's Model 10/11 mono-band was derived from the HF5B. PVC pipe and the wires attached to it. If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=2zWb-KnkGdY. and are fed as shown. Here's a simple Saturday project: build a portable VHF yagi antenna for 2 meters. TV), Building a cheap, portable, vertical antenna, DIY VHF 2M Jpole antenna out of 450 ohm line. Another design that is often too big to be considered on the lower DX can be worked every now and then, so keep your standby receiver tuned to your favorite 10 meter frequency. Extended Double Zepp, consider the loop shown in Figure Raven Roofing Utah|. For Amateur Radio News and Trends, please visit my news site at https://bigislandarrlnews.com.Aloha es 73 de Russ (KH6JRM). Since they were originally designed for 11 meter use on the CB band, they are usually longer than those required for the 10 meter ham band due to the difference in frequencies. We use cookies to make wikiHow great. It is important to be careful when working in the loft. It uses normal half wave dipoles and a 4:1 balun to bring the impedance from approx. White Jeep Wrangler With Tan Interior|. into both coasts with a minimum of effort. In this video from AC2RJ, we see how some well-placed trees, a camera tripod, a telescoping fiberglass mast, and a "V" antenna can get you on the air without a lot of effort. meters too. A height of 120 feet . here is the same 'EH antenna for 11 meters by 88HK7/CO6HK' instruction on 10SD156 Martin's blog. Post #1555. Post #1554. Reflector are 5% . Randy Hall (K7AGE) does an excellent job of explaining how to work the 10 Meter Band with a basic, inexpensive dipole antenna. I value your comments and suggestions. as a dipole. software for business improvement, Amateurradio reference pages by QSO Shack, Data mode communication on the Yaesu FT-817, Data mode communication on the Yaesu FT-991, Data mode communication on the Elecraft KX3, Vertical HF whip antenna for 20 or 40 metres, Make a rotating VHF/UHF HAM SAT antenna array, 40m Hamstick Dipole vs 1/4 wave vertical antenna, Spectrum Communication trapped dipole 20 & 40 metres, How to add an SDR pan-adapter to your transceiver, Make a digital hotspot using a Raspberry Pi, QRP-Labs Ultimate3S US3 beacon building tips, Repair Elecraft T1 ATU after too much power, Upgrade the MFJ1234 RigPi with an SSD and Pi4. of constructing open-wire line. In America, this antenna shape is also known as the Squalo, amalgamation of Square and Halo. If Cross straight over underneath and make another 6 turns on the other side of the toroid core. antenna will work well on all bands 40 through 10 but it will only works By signing up you are agreeing to receive emails according to our privacy policy. The easiest way to obtain more gain is to take your basic dipole Enjoy! The KB3TTP 10 Meter Quad - Build a Stronger 2 Element Quad Antenna Lots of images Allow time to load using dial up Build a Stronger 2 Element Quad A Different way to construct a tried and true antenna out of PVC, especially for the 10 meter and higher frequencies. Ham Radio operators review new sites every day since 1998, for potential inclusion in the Directory, and to evaluate the best place to list them. By making each element just Once its tuned in, you do 10 meters. Required fields are marked *. wikiHow is a wiki, similar to Wikipedia, which means that many of our articles are co-written by multiple authors. Amateur Radio Bicycle Mobile Setup. Yagi Antenna Calculator Yagi antenna calculator, yagi antenna dimensions, learn to build a yagi antenna, guide to yagi antennas Simple 3 element Yagi Beam Calculator for Amateur Radio Select number of elements: 2 3 Enter frequency: MHz Press Button: Element Feet Inches Metres Reflector: Driven Ele: Director: Spacing: Last Updated: Elements are centered on a boom. Then bring the ends together so that there is about 10cm of space between them. http://www.arrl.org. https://hamradiohawaii.wordpress.com. Portable 10 Meter 28mhz 2 Element Beam Using Cb Whips By Kl7jr 10m Moand Yagi Antenna 7elements Pa28 7 12bhd A Small 10 Meter Very Wide Band Yagi 10m Moand Yagi Antenna 7elements Pa28 7 12bhd A Pact 10m Beam A Short Boom Wideband Three Element Yagi For 10 Meters A Pact 10m Beam Lj 115 5 Element Yagi 10 11 Or 12 M Dxsupply {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/d\/dc\/Build-Several-Easy-Antennas-for-Amateur-Radio-Step-1.jpg\/v4-460px-Build-Several-Easy-Antennas-for-Amateur-Radio-Step-1.jpg","bigUrl":"\/images\/thumb\/d\/dc\/Build-Several-Easy-Antennas-for-Amateur-Radio-Step-1.jpg\/aid902279-v4-728px-Build-Several-Easy-Antennas-for-Amateur-Radio-Step-1.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"