Rain gutter tv antenna Results have been surprisingly good for shortwave listening using the Crane CCRadioSW shortwave receiver. Also an effective HF performer; this one is used primarily as a shortwave receive antenna. Jun 21, 2013 · At 70mph with 102" whip antenna pulled down forward and in the clip, the entire device came free from its rain gutter clamped position never to be seen again. scrape some of the finish off, unscrew it a turn if necessary, and clip to the screw. 032 inch thick material and have an equivalent cross sectional area about the same as size 00 AWG wire. In fact, it has turned out to be the ultimate low-profile antenna! Craig, WB3GCK WB3GCK Downspout Antenna www. Jul 24, 2014 · A rain gutter can make a fine antenna and I think the best way to light it up would be placing a remote auto tuner outside at ground level and feed the downspout. You will probably not notice too much difference in RFI (radio frequency interference) between a rain gutter antenna and an attic mounted random wire antenna. 5. antentop. If you need more gain a directional antenna can be used. No exceptions. When I told him that I was using a Alpha Antenna rain gutter antenna he was amazed. I think it would be a little easier to mount the 3 antennas i have on that type of braket than mess with 3 magnet mounts that move and fall off when you hit I tested the stealth antenna with my MFJ antenna analyzer to see if: there were any inherent resonant points on this system. The use of a rain gutter as an antenna is and could be very dangerous. The idea was the gutter would serve as a ground plane to a mobile-style UHF mounted antenna. Lowering ground losses on a vertical antenna usually increases VSWR, as the resonant impedance of a full sized vertical is about 34 ohms. Add to Cart. A rain gutter antenna is the type where you'd really want to read about others' experiences before trying one. So 7 to 18 inches is all you need. -External antenna jack, plug in miniplug with central lead soldered from the tip to a single lead wire to an alligator clip. The set screws are pointed to break through the paint on the interior of the rain gutter, for grounding purposes. One of my experiments was a sloped half wave, starting anywhere in the middle of the gutter, and the gutter metal used as ground/counterpoise. These antennas can get really expensive when you move every few years. GLASS MOUNT FAQs: VHF UHF MilCom MOTO antenna; Reviews: Alpha Base MagLoop antenna; Reviews: Alpha Portable MagLoop antenna; Reviews: Digital EMCOMM antenna; Reviews: End fed Sr and Jr antennas; Reviews: HexTenna antenna; Reviews: HOA Buster antenna; Reviews: Icom AL-705 Loop Antenna; Reviews: MIL 2. How directional is the gutter antenna? GUTTERS FORM A FAIRLY BULBOUS PATTERN, WHICH MAKES THEM MAINLY OMNI-DIRECTIONAL ANTENNAS THAT FAVOR THE DIRECTION AWAY FROM THE SIDE OF THE HOUSE WHERE THEY ARE INSTALLED. Shortening a vertical by loading it decreases the radiation resistance. The main thing to keep in mind is that the antenna should not be in close proximity of large metal objects. Is there a generic rain gutter clamp with a hole that I could put the NMO mount into? _____ Vanagon ’83 diesel AAZ w/Giles injection, 5spd 4. Then run multiple counterpoise wires heading in opposite directions along the perimeter of the house if you can't run them outward through flower beds, etc. 8 mtr Length. Voltage high enough to start arcing to other object around it including people and TV Antenna Gutter Mount 1. The Hustler RTG-27L Gutter Mount CB Antenna offers a no-drill install that mounts securely to any size, shape, or angle of vehicle rain gutter. just look up at all that metal around your place and, put on a happy face and say "what the hey" Yes, amazing what those things Jan 6, 2022 · Some hams have bought a heavy duty antenna matcher and tuned up on their gutters, downspouts, and even chainlink fence. The rain gutter lead, between the rain gutter and Alpha stake supported unit, is supported approximately 18-inches about the landscaped ground. Save. We simply tossed a continuous run of #14 wire inside the gutter totaling just under 140 feet total length. REVIEWS of the HOA Buster antenna enables your tuner to achieve a near perfect match from 6-160 meters using the gutters on your home. And that's where the pole stops. MORE INFORMATION. Less effective if you have wire mesh / stucco walls, metal roof or insulation with metallic backing. Actually, most modern cars have done away with rain gutters to improve aerodynamics. 10, 15 and 20 meters could be tuned to less than 2:1. Hobbyist antennas do not have such protection, except via PRB-1, preventing local governments from totally prohibiting ham antennas. At the other end (Figs. Or the cable can be brought in through the window. -***m (1684) Adapter TV Antenna & Dish Mounting Gear;. Aug 30, 2021 · GUTTER MOUNT. Nov 13, 2019 · Would connecting an antenna to a metal roof ruin an antenna’s carefully constructed design? Or, would the entire building become an antenna itself? Would it be a huge risk for lightning? Well the answer is, most of the time it doesn’t mean anything. You would also want to pop rivet the sections together and make sure they are electrically connected. 40 meters was pretty bad at about 5:1 and 80, well, forget it. 5 & 6), I simply cut a roughly 1” wide piece out of the length of the noodle section, leaving around 3” of uncut section on each end. He just can't use it when it rains, as the antenna would be covered in water. So the next time you get to feeling down at not getting into the weekend QSO runoff, and it seems like every HOA is raining on your day. just look up at all that metal around your place and, put on a happy face and say "what the hey" Yes, amazing what those things Dec 18, 2016 · For not a lot of effort, I am very pleased with the results. 7 meter antenna. 7 & 8), I had to be a bit more creative with the cutout. #hamradio #antenna How to build a HF Antenna using a rain gutter!Do you live in an HOA? Maybe this is the antenna for you! I appreciate you taking the time Mar 20, 2022 · He said there are YouTube videos on how to make your rain gutter into an antenna. If the downspout runs up to the center of a gutter then you would have a vertical with capacity hat. This began a quest and off to Home Depot I went. Time to Aug 27, 2024 · One small problem the new flashing antenna worked too well – the AM signal reached well over 70 miles – so the tech’s had to turn the power way down – so nothing new with the gutter as an For the antenna itself, something like a Workman Saturn or other ngp mounted on a joint of pvc pipe, then painted and camouflaged with plastic vine/leaves/flowers. The manual states to NOT run the rain gutter lead parallel to the antenna cable that connects to the radio. I am also a proud owner of your Alpha Loop Antenna and 10- 80 meter FMJ Antenna, both are great products. The gutters runs about 50 feet across the roof eve on the second floor. com/user/davecasler. Middle Shortwave Bands (7-10 MHz): Perhaps the most surprising results came in the 9. The results have been surprisingly good for shortwave listening using the Crane CCRadioSW shortwave receiver. About two weeks ago made a homemade rig to hook up random metal objects. Cons At 19 inches, this antenna mount is on the longer side of the list, which, while providing more height, might not be the best fit for smaller antennas. Soldering wire to a rain gutter can be challenging. Should be here in two weeks or so (their lead time from order to ship is currently about four weeks). For any antenna, placement is important. Joined Jun 30, 2006 Messages 15,565 Location So Cal - Richardson, TX Rain Gutter Antenna An End-Fed Multiband Antenna Larry Nelson - K5IJB. Here is the bill of material I used to setup my low key gutter antenna; 1. An LDG remote antenna tuner : DXEngineering Product Link You will see lots of other guides that have you buying baluns, that will work too – but this seems to work better and also provides a way to more efficiently tune the antenna to protect your radio from high SWR. 475, 162. Operationally, the HOA Buster is a matching network that uses gutters as the UHF and HF antenna element for 10-80 Meters + 440 & 900 MHz frequencies. For example, if you mount the antenna close to a metal rain gutter, it will severely detune the antenna and it will not work well. Mar 30, 2019 · Still, especially for efficient modes like WSPR, a gutter antenna should get you some results. 2. By John Portune W6NBC . If i want to use the gutter on, for example, 20 meter WSPR, i use a 9:1 unun with no matching network. Home; Awning(s),Rain Gutters,TV Antenna; Awning(s),Rain Gutters,TV Antenna. I have been able to hear all kinds of things on my Sony SW-55 this way. > > How long should these wires be? Or should I make it like a bow tie > shaped antenna? I might even have a broken tv antenna in my junk pile > that I can salvage some of the cross bars and even the insulators. I have better antennas than the gutter, like an attic brass slinky dipole, For those with limited antenna options this is something to consider. 0 FMJ HF Sep 6, 2023 · For the antenna, I decided to use the CB radio clamp on the rain gutters to mount an antenna. This cutout fit down over the bracket snugly. I am extremely pleased and also amazed at your HOA busters performance. Feb 1, 2015 · Well the rain gutters aren't metal so there goes that idea. I would opt for the attic antenna, placed as high inside the attic as possible. May 1, 2011 · I live in an antenna-restricted community and the condo GESTAPO doggedly enforce the rules. Also, remember that any antenna that is a) physically very small for the wavelength or b) just some random piece of metal like a fence line, gutter, or, yes, even a lawn chair, and an SGC tuner can tune up a lawn chair, will NOT work very well. So to be safe first test was the tried and true Rain gutter down spout. Sep 25, 2012 · This antenna mount does a good job mounting to the rain gutter. I tap into one of the downspouts just outside one of my basement windows. Dec 25, 2010 · Above: Another HF rain gutter antenna connection. So. Aug 29, 2022 · John, KE0RWV, wants to use his rain gutter as his antenna. If you want to use a NMO connector, you need to drill out the opening, but a unibit will make quick work of it. If it’s up on the roof and it’s made of metal, it should be grounded. Some are presented here: * Experiences of rain gutter antenna with SG230 antenna coupler (commercial link) * K5IJB rain gutter antenna Rain gutter antenna. Another idea that intrigues me, the rain gutters. KJ4DGE 2015-04-07; RE: Rain Gutter Antennas; It takes a lot of guts to admit you are using such a simple but effective device. Nov 2, 2022 · Classified ads, photos, shows, links, forums, and technical information for the Volkswagen automobile The Classic Rain-Gutter Loop Antenna – Is it any Good? A simple technical look at an HF horizontal loop of . 25 In Stock. The matching network then has a metal Mounting Spike under it, which is used to complete the circuit and provide a static drain. Contacts were made with my XIEGU X5105 Q HF Antennas Especially stealth models for Rain Gutter • Should be a new gutter TV antenna 20 mtr 40 mtr 80 mtr . 2-3. I now have a run of coax connected to the bottom of the gutter near the ground by wrapping the center conductor of the coax around a self tapping sheet metal screw and running it into the guttter. The antenna is long gone and larger gutters were installed at some point. For the base bracket of the TV antenna (Figs. 425, 162. I'm running my coax out to a downspout, where I use a piece of wire to connect the center conductor to the bottom of the downspout. I then connect the braid of the coax to my existing ground system. 0 FMJ HF antenna + Mast Mount; Reviews: MIL 2. 1. prcguy Member. A simple $10 homebrew dipole in the air will vastly outperform any rain gutter. A loaded rain gutter should be an antenna of absolutely last resort. Obviously a tuner would be needed, along with a counterpoise, and a tuner. RE: Rain Gutter Antennas Amaze Me Too; Careful. I have a two story house and use the continuous gutter run along the back of the house. 57R&P+TBD and a '78 diesel Rabbit Dec 20, 2021 · Or you may have to connect one end to your house and the other end to a pole. The lower run does not circle the building like the upper run. Would a rain gutter antenna match up to the freq needed for cb? I have a duplicate rain gutter section on the west side of my house and, if I bought another SGC antenna coupler, I could phase the rain gutter antennas together with equal amounts of coax to the couplers plus by inserting a 135 degree phasing line cut for each band, I could then switch them as an end-fired array and have resultant directional The mast from an old TV antenna goes from the ground to a secure attachment bracket on the soffit just below the rain gutter. Combo: Sirio Performer 5000 LED 10M/CB Mobile Antenna with Gutter Mount Kit. My concern is that the gutter would essentially represent a short-circuit to the dipole as it is just a fraction of a wavelength away, making the antenna ineffective as a radiator. For right now it's sitting on top of the window AC unit (not in use obviously since it's below freezing outside), I would like to build a ground plane of some sort and set it on the roof somehow, but at that point I may be better with a small tower and base antenna set up. Sure, you might be able to tune it somehow, but i really doubt they will work very well at all. Price, Philips Universal Adjustable TV Antenna Mount, Steel J Jun 24, 2022 · An overview of the Alpha Antenna HOA Buster antenna system and how it has worked for me. S. Is there a way I could run antenna wire from the end of my gutter, over the shingles of the roof to the other side of the house and connect it to the other side’s gutters? The gutter will increase the antenna's effective diameter and increasing the bandwidth. The antenna install was straight forward following the manual's instructions. Dec 15, 2020 · Satellite dish, and terrestrial TV, antennas have to be allowed, by federal law. The "Widget" tilt plate mount is available with a choice of SO239 antenna stud or stud mount with terminal connectors. These aluminum gutters are made of 0. The widget is adjustable to keep your antenna vertical when mounted on sloped surfaces. I’m planning to solder or attach a wire to one of the screws at the bottom of the spout. TV Antenna Gutter Mount quantity field. This configuration has also performed well as a 38-foot end-fed long wire antenna for May 27, 2017 · mobile one antenna - scatx (antenna review) (1) mobile one antenna'a - the scanducky (1) mobile one antenna's (1) monitoring army field communications (1) motor racing (2) mt druitt frequencies (1) mudgee airport (1) nagoya antennas for baofeng radios (1) new chopper for westpac rescue (1) new helicopters for ch7 & 9 (1) new rescue helicopter Jan 17, 2025 · New gutter style clip to fold back your whip. Jan 9, 2021 · What do people do for a rain gutter NMO mount? Since rain gutters are out of style its pretty hard to find such an old thing. Bungee cords were used to hold it in place. I'd like to add an OTA antenna on that pole. Attaching an antenna to a metal roof probably won’t improve or hurt reception. Search the "HOA Busters Raingutter" antenna. For a quarter wave antenna a ground plane is important. The antenna mount has an angular movement of 90 degrees, giving you the freedom to fix your antenna in almost any direction for the best possible TV-watching experience. Installing an antenna inside a radiant barrier is similar to trying to use an antenna inside a screen room. It's called the Alpha HOA Buster and gets great reviews. For the record, Alpha Antennas sells a gutter antenna setup that includes everything you need for about the price of Chameleon Micro. In this video, I show you how I set mine up and give a snaphot of it Nov 5, 2017 · The problem is a metal rain gutter which runs parallel to the antenna, about 3 feet to the side of it. Jan 19, 2015 · A J-Pole is a 1/4 wave (λ) parallel transmission line, shorted on on end, with the other end feeding a 1/2λ radiating element, with the transmission line (coax) feeding the 1/4λ wave transmission line at the 50 Ohm point; so the overall antenna is 3/4 of a wave length, with only the 1/2λ element at the top, radiating, and allowing the I have a duplicate rain gutter section on the west side of my house and, if I bought another SGC antenna coupler, I could phase the rain gutter antennas together with equal amounts of coax to the couplers plus by inserting a 135 degree phasing line cut for each band, I could then switch them as an end-fired array and have resultant directional In hopes of finding a low-profile antenna for shortwave listening, the rain gutter and downspout on the back porch were tried as a random-length antenna. PM me in a few weeks. Premium Subscriber. In hopes of finding a low-profile antenna for shortwave listening, the rain gutter and downspout on the back porch were tried as a random-length antenna. Thread starter Jimru; Start date Apr 3, 2013; Status Not open for further replies. 550 MHz. There is a convenient spout right on my side porch that I can easily connect to. Time to The FireStik WTP4 mount attaches to rain gutters, truck beds, trunk lids, etc. I only have about 50 feet of continuous gutter and then a downspout that’s about 3 stories high. Coax will pass the signal through a radiant barrier, no problem. The demonstration Typically a good way to mount to anything is to drill some holes and use a couple of u-bolts, however I would advise against mounting to a rain gutter as they are quite flimsy and your antenna won’t stay oriented properly. I just added a second counterpoise about 35 feet and that reduced ground loss a bit. 0 out of 5 stars. 2 Properties Feb 6, 2006 · I know they are made, is there anyone that sells rain gutter antenna mounts in the US? every place I found using google and ebay was in the UK or Europe and shipping was going to be crazy. Compromise disguise antennas are no strangers to hams, especially on HF. Raising and lowering the antenna and masts to change bands can be done by one person, but two make the job easier when the wind is blowing. Spend it on a good tuner, instead. It's not going to work very well, HF or VHF. Coincidentally, these occurred at the top of the 75 meter band and: again in the middle of the 15 meter band "Life is good". May 13, 2021 · Ever wondered if your home's aluminum gutter could double as an effective shortwave listening (SWL) antenna? Link to the SDRPlay RSP1A I use for this video:h Dec 25, 2010 · Above: Another HF rain gutter antenna connection. Jan 24, 2021 · The rain gutter is basically just a random length of metal that goes vertical then horizontal for some distance. Jun 12, 2024 · The gutter antenna captured approximately 85% of the stations receivable on the dipole in the 3. Finally done with my home-made contraption, I connected up to the downspout of the rain gutter. However, before you tackle this project, it’s important to understand the different types of TV antennas available for gutter mounting and what to consider before making your purchase. 7 meter (28 inch) wavelength, but you don't want a 0. Including the feed wire into the shack, the total length is in the neighborhood of 42 feet; over a quarter wavelength for 40 meters and almost a half-wave for 30 meters. Nov 21, 2020 · When possible: use a separate wire with a resonating length and then the end of the antenna must be spaced from the gutter: the antenna wire coupling to the gutter must be as low as possible. Apr 3, 2013 · SWL Rain Gutter Antenna. Oct 18, 2008 · The loaded rain gutter is the higher of the two at 32 feet. I didn't have a good ground system on the antenna and couldn't put one outside. Then I read Small Antennas for Small Spaces and I discovered my problem. with using my aluminum rain gutter and downspout for an antenna. I’m trying to use my gutters as an antenna with the HOA buster. If the gutters are metal, they could be connected to a tuner. House with red lightweight metal roofing sheets, white plastic rain gutters, tv antenna, air duct and white painted walls against blue sky. But which ones are worth the effort? About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright Nov 12, 2013 · As y'all know, I've always used stealthy antennas, and this is the stealthiest of them all. Sep 19, 2020 · If you’re tired of paying for cable or satellite television, mounting a TV antenna to your gutter can be a great solution to get free over-the-air channels. I did a quick coax run to the outside gutter and grounded the braided side, then connected the feedline to an old MFJ tuner. 500, > 162. It was impossible to find a decent matching combination on 160 meters at all. Delta loop on your roof. fit well on my 85 Bronco rain rails. Dec 28, 2015 · If the gutter is metal and long, like 30 to 60ft you could replace the first downspout section with a plastic one to insulate it, then use the PAR transformer and use the rain gutter as an antenna. The best solution is to put the antenna outside of the house and its radiant barrier. com DB8E on rotor fixed VHF yagis Televes 560483 Dual Input preamp 8way split Samsung 4k. There were a: few spots where the "Rain Gutter Antenna" was under 2:1 SWR. I was surprised that the gutter tuned up at all on any bands. Feb 1, 2021 · Yes, yes, YES! For all that is holy do not blow $250 hard earned dollars on that Alpha piece of sh*t. some novel loop disguise techniques. I was forced to load up a rain gutter to make hf contacts but the system was inefficient. The design would sandwich an SO-239 barrel and the radio mount clamp between the feedline and the antenna. I've tried to home-brew my rain gutter antenna a few times with mixed results, so I took a flyer on the Alpha Antenna HOA Buster. More reviews on the HOA I'll demonstrate how simple it is to install a gutter antenna and get the maximum results with the Chameleon Antenna URT-1 Remote Turner. Depending on the frequency, there could very well be very high (1000's) of volts on that gutter, including the radials you plan to lay down. . And works GREAT! My search is over. The downspout has a vertical run of approximately 16 feet, connecting the horizontal rain gutter which is about 16 feet long across the front of the house. Jimru Member. A pair of Radio Shack 10-foot TV mast sections supported my antenna parallel to the plastic rain gutter on the corner of the house. org Page- 20 Mar 4, 2025 · inductor, with a 142pF shunt, for my gutter antenna. Amazing. > > These radios operate at 162. A gutter mount antenna clamps onto the rain gutter above the door. The results have been surprisingly good. I tested the stealth antenna with my MFJ antenna analyzer to see if: there were any inherent resonant points on this system. Mostly to see first hand what my home-brews were missing. Giveaway The antenna install was straight forward following the manual’s instructions. channelmaster. Most remotes are around 433 MHz which is a 0. That worked really well also at 5W although 5W is overkill for WSPR. wire strung around your house at rain-gutter height, plus. Stay Safe and stay well, Larry 73 N2CPA. The opening in the CB mount was designed for the Alpha Antenna HOA Buster 10-80 Meters Very Effective Time Owned: 0 to 3 months. I can get a good match from 10m through 160m so now I have a backup antenna, in case my other antennas fall prey to ice storms over the winter (if the rain-gutters fall off the house I have bigger problems than antennas ;-o ) Cheers. Find a screw that holds your rain gutters together. 525, and 162. After mounting, the antenna cable is brought inside the vehicle and the door is closed on the antenna. But which ones are worth the effort? Jan 26, 2008 · As one of my antennas that I use for HF reception is the 100 feet or better of aluminum rain gutters that run along the top of the building. No big deal, easy enough to find something else to do in the rain. Feb 20, 2019 · Every outdoor antenna should be grounded. 5 MHz range. Joined Dec 19, 2002 Messages The Hustler RTG-27L Gutter Mount CB Antenna offers a no-drill install that mounts securely to any size, shape, or angle of vehicle rain gutter. Calculate I live in a townhome and I’m planning to experiment with a rain gutter antenna. www. Tried to do a return action, but with the clip somewhere on I-95, that turned out to be a wasted effort. If the downspout goes up and connects to the end of a gutter then the antenna would be an inverted L. Attach that to my MFJ-902b tuner. The results were surprising to say the least. You can also make one from a 9:1 transformer and some wire clipped to one of the ends / downspout. While searching for different "stealth" antenna designs we could build, I came across the "gutter antenna". 450, 162. There is also a FB group for rain gutter antennas. Jul 17, 2022 · The Universal TV Antenna Mount is a unique mounting solution enabling consumers and professionals to easily install different types of outdoor antennas. But it needs to be extended above the gutter and roof edge. Jan 27, 2022 · After the installation and in the initial trials, one of the drawbacks I noticed on the rain gutter antenna was that it was somewhat tricky to load on some of the bands using a conventional antenna trans-match. Gutter mounted the RTG-27L Hustler antenna offers the advantages of a roof mounted CB antenna, in an easily installed package. But which ones are worth the effort? In one installation we did, the gutters were all made of plastic vinyl. I have used just about every kind of material for an antenna for shortwave listening that would conduct a radio frequency including window frames, bed springs, rain gutters, conduit, aluminum tubing, coffee cans soldered together, old CB antennas, TV antennas, curtain rods, copper tubing, aluminum trim from kitchen counter tops and on and on Here is what I used on my gutter antenna, which I use solely on 160m, and it has done extremely well for a gutter antenna. Most HOAs that I’m aware of steer clear of the flag pole issue due to 1st The Classic Rain-Gutter Loop Antenna – Is it any Good? A simple technical look at an HF horizontal loop of . Will it work? What's the best way to do it?Subscribe: https://youtube. Never mind if that antenna has been up there for 50 years and it’s always been fine. 7-10 MHz range, where the gutter antenna nearly matched the dipole's performance despite having no specific tuning for these frequencies. Dec 10, 2022 · I actually use a gutter antenna during the winter months where I live in MI. Several sources suggest that the downspout and gutter can be used as a random wire antenna buy connecting the stinger to the spout after scratching off some paint. Of course the whole thing is coupling to any conductor near it and some power will be absorbed by surround objects. The antenna is usually 1/4 to 5/8 wavelength. Summary: This is nothing more than loading up a rain gutter with a 4' ground rod as the counterpoise. Is it useful or effective to connect the length of gutters on the two sides of the house with 10-gauge wire to link them together? The Classic Rain-Gutter Loop Antenna – Is it any Good? A simple technical look at an HF horizontal loop of . 400, 162. Dec 15, 2020 · Rain gutter antenna! All you need is a tuner and a 9:1 unun! Reactions: WB9YBM. I gathered parts and other stuff to cut, drill, and solder… then adjust, redo, and revise. Michael VE3WMB (Polar Bear #19) Grrrrr… P. By Jack Ciaccia, WM G This is the third, and latest version of the all band Rain Gutter Antenna used at my new QTH. Share: Facebook; Twitter; Pinterest; Google+; $74. ewlf mseebrs ybblnr jgfb gwxhj myifzf zyaa sqznlb pkhlz gnhr rirgl cxgk ikoiab qnczl uvybp