Mini whip antenna grounding Whip active antenna grounding antennas ground setup noise connection other technotes nl. If you want good reception, the following is very important : This is an OUTDOOR antenna. They are used by WebSDR stations and are reported to be excellent. SWR will vary according to mount location and grounding (3/8-24 mount not included). 0 XT_125 Note: There are no Gerber files of the PCBs. nl (This is an adapted version of part of an article that I wrote for the Dutch amateur radio magazine Electron, February 2015. I needs some experiments to find the optimum dimensions for the individual location. The Mini-Whip at University of Twente's (Netherlands) Remote ReceiverI think many hams believe that they need big antennas and lots of space to operate on 630m or even to listen on the band. I decided to try using a small wide band E field type antenna with my newest receiver design the Mini SDR, and the results have been gratifying. Stalk my post history (on mobile atm, sorry) for the post I made a while back on here talking about my experiences with a longwire antenna, but I've tried grounding (a metal fence post rammed in the ground), and a dipole design (280 ft of wire on one side and 60 on the other) and the dipole Thanks for the support and advice with regard to my active mini-whip antenna problems. 1 rating. Tomáš Pařízek. Photo 2 The active antenna mounting plate with the 'N' type connector and indicator LED attached. However, if you’re in a noisy urban area or you’re using a unit that needs to be put up in an area with high density or conflicting I was recently lent a RA0SMS mini-whip to try out. 31 product ratings. The Mini-Whip is based on a design from PA0RDT (google finds it); see here and some older pictures here. pdf PA3FWM projects miniwhip PA3FWM technotes Grounding This antenna is very suitable for my SDR HF UP converter: SDR HF-Upcovertor v3. Fig 2: Fig 2 is from PA0RDT and PA0RDT-Mini-Whip Antenna PA4NIC MiniWhip-pagina. But, that is not the case, the lower element is an arbitrary length of coax eventually connected to a ground electrode in PA0RDT's article. . org uses mini-whip active antenna, I decided to give it a try. uk. Example of working an SDR receiver on antenna Mini-Whip: Wide-band WebSDR in Enschede, the Netherlands. This is a simple active antenna based on a design by PA0RDT, consisting of a metal plate of about 5 by Note from PCBWay: This page only includes the Main Board, if you need the other two boards, please check Antenna Mini-Whip PCB (TH)_ Power feed unit_GERBER and Antenna Mini-Whip PCB (TH)_ Power feed Mini Whip Antenna. The antenna is considered as an input of an emitter follower 【Features】The whip active antenna has good performance, which can make sure stable working. As power lines cross my city property in a L shape - the only way to get away from them is to go up. KiwiSDR. I’ve been fiddling with my “balcony antenna” experiment for quite a while now, and I settled with a Linear Loaded Dipole (LLD, also known as “Cobra”) which, in my case, due to self-imposed limitations was a short one (about 9m total). A small antenna capable of excellent performances on low bands, made on a copper plate and introductio to active antennas. A few years ago the Mini-Whip did alert me to a TA opening at Grayland. Data sheet. Many years ago I tested a Mini-Whip MINI-WHIP ANTENNA . The antenna is Mini-whip active antenna is an active antenna that is a few cm long. My program cannot generate it. de DL4ZAO BlueWhip MegaWhip I have rebuilt the There are urban legends here about some people grounding household appliances like washing machines or ovens through the central heating or water pipes. 27 ratings. When you have an antenna outdoors, it should be connected to the Earth, as that helps limit lightning damage, limits Mini Whip antenna building and testing. Whip antenna on portable FM radio receiver Whip antenna on car. Reception from 50 KHz to 175 MHz Product Reviews Miniwhip Active Antenna Assembled HF LF VLF Mini Whip SDR RX Portable SWL. 8 4. The detailed description of the principle of operation: An important point is the good grounding of the Hence an electric field antenna was called for. nl (This is an adapted version of part of an article I wrote for the Dutch amateur radio magazine Electron, October 2023. Results were encouraging and the whip length could be reduced from 100 cm to 30 cm without loss of performance. Buy Shortwave Antenna Set, Mini Whip Active Antenna, Mini Whip VLF LF HF VHF Active Antenna Mini Whip Shortwave Antenna 10 kHz - 30 MHz at Amazon UK. Delivering to London W1D7DH Update location 【Well Grounded Installation】: For optimal performance, it is recommended to install the Miniwhip onto a well A Mini Whip antenna is an ideal addition to the ATS25 X2. Such an antenna only works well with a good grounding; ours is on top of a 20m high building, the upper part of USB 2. I have a wideband rf choke In fact there is an article at SWLing. Installing a PA0RDT Mini-Whip In an Apartment. At VHF/LF frequencies, it acts as a capacitor to the ground, capacitively coupling to the electrical field of the The BONI-WHIP active antenna replaces the very successful Mini-Whip antenna. Abstract: The thesis deals with the impedance matching of electrically very short antennas to the real resistence 50 Ω . Fig. t. The kit is very convenient to operate. A whip antenna is a form of monopole antenna. One can also reason about how to achieve that. I also have "long wire Grounding doesn't improve reception as much as just making a dipole would. So I made a makeshift In a previous installment I explained how the MiniWhip antenna works, and why it needs, like other active whip antennas, a good "clean" ground connection. I recently took delivery of a Mini-Whip Active Antenna which covers VLF to 30mHz. 0 rating. My antenna mast ~6 meters high. The Mini-Whip design has a frequency range of 10 kHz – 30 MHz. which is my Wspr antenna but the mini whip outperforms them both. Reception frequency: 10khz to 30Mhz Integrated LNA preamp Power supply via Bias-T supplied: 9 to 15V, nominal power supply 12V Also a non-metallic mast was needed plus a decent ground rod at the bottom of the mast to achieve proper grounding of the outer braid of the coax. Have a listen to the Well I've taken a little plunge into new territory - Bonito Boni-Whip - Active Antenna My current reception setup is a long wire (coax fed) with MFJ-959C ATU for 0-30MHz Receiver and MFJ-956 Tuner/Preselector. Great solution for LW, MW and SW. Discussions; Activity; I installed each one in succession near where my CliftonLabs whip antenna is, about 5 feet off the ground strung from a plant hanger 80 feet from the house and more from the road. An active monopole is a delicate antenna. Read full review Pa0rdt miniwhip Whip antenna mini active power radio supply antennas radios counting shortwave installation forget don Ra0sms mini-whip antenna : resource detail Whip antenna operating at me. Whether the mast is Simple and better circuit for MiniWhip antennas Pieter-Tjerk de Boer, PA3FWM web@pa3fwm. Exactly follow the connections in the figure to suppress the antenna. The antenna is mounted at the top of the PVC pipe. Later on, I improved the setup by raising the antenna a bit more and routing Most short active whip antennas for VLF/HF are considered an E-field probe and benefit from a ground plane right beneath them and not necessarily a distant ground rod. So Example of working an SDR receiver on antenna Mini-Whip: Wide-band WebSDR in Enschede, the Netherlands. The main reason seems to Setting up a Mini Whip antenna. Antennas: Shortwave. I rebuilt PA0RDT’s active antenna [1], improved by PA3FWM [2], The first and most important thing was to connect the outer shield of the coax to a good grounding point close to the mini-whip. The antenna is considered as an input of an emitter follower The Zwischenbasis circuit Pieter-Tjerk de Boer, PA3FWM web@pa3fwm. In addition, it has strict quality control and quality assurance, it is very easy for you to connect 【 Kit】The mini whip active antenna has kit. Here Reading the many articles and blogs for the active mini whip antenna, it is only effective high outdoors with a proper ground. It became clear that at LF an active whip is a capacitance coupled to the electric field. Moonraker HF Mini Stick Monoband Mobile Whip Antennas are an easy, economical way to enjoy operating on the HF Amateur Radio bands while mobile or portable. I ran about 100 ft, of what I had available. org (This is an adapted version of part of an article that I wrote for the Dutch amateur radio magazine Electron, February 2015. 30 x 60 mm and is therefore very small and can be easily installed anywhere. The first 3 meters is a galvanized steel pipe; the last 3 meters is PVC plastic. com about the proper grounding and placement of a mini-whip How to properly install a Mini Whip antenna in an noisy urban environment Many thanks to SWLing Post contributor, Grayhat, who shares the following guest post: Setting up a Mini Whip antenna by Grayhat I’ve been fiddling with my “balcony antenna” experiment for For a test of this antenna, check out my website for the HF Mini Whip Antenna. The active receiving element is about 5 by 10 cm large. 0 isolator USB galvanic protection and 400mA ground loops. this is why first compont is the FET with high impedance input on the mini whip. pdf: PA3FWM: Grounding of MiniWhip and other active whip antennas : Maplin Superscan. 2 stars. E-mail: xpariz07@stud. Supplied with: 1 mini whip antenna PCB and 1 Bias-Tee PCB, without cable. So I'm hoping that going 5-20 feet above my roof line will reduce the extreme RFI that is on the power lines. Skip to main content. Well, that’s not going to happen where I live, so I needed a way of getting it to work in a regular apartment. 50kHz - 30 MHz. Here we take a look at a popular active antenna design originally by PA0RDT called the Mini Whip. 5 Grounding a MiniWhip antenna. The pa0rdt-Mini-Whip. An Active antenna designed for VLF and shortwave radio reception. g8jcfsdr@groups. md at master · mhackersu/easy-sdr MINI-WHIP ANTENNA . I had a metal wire from Micheals that looks a lot like wire used for hanging pictires or tieing down nic nac creations. Pular para o conteúdo Comentar sobre acessibilidade Mercado Livre Brasil - Onde comprar e vender de Tudo. Reading the many articles and blogs for the active mini whip antenna, it is only effective high outdoors with a proper ground. In a previous installment I explained how the MiniWhip antenna works, and why it needs, like other active whip antennas, a good "clean" ground I have purchased a mini whip antenna, made my installment plan however someone has warned me about grounding issue. Measured frequency characteristics (L1 on the antenna PCB is short circuited). Qualitative grounding is necessary for the correct operation of the Reading the many articles and blogs for the active mini whip antenna, it is only effective high outdoors with a proper ground. Reception from 50 KHz to 175 MHz; Built-in rechargeable battery which can be charged via Micro USB port (approx. This creates a broadband active antenna that can receive in the 10 kHz to 30 MHz range. The pa0rdt-Mini-Whip©. Skip to main content Needed to solder wire between Antenna ground connector and PCB ground in the power feed box in order to get voltage on the antenna connector. 8 out of 5 stars. Earlier this year I purchased new original Mini-whip from PA0RDT. 1 star. 17 cm long), it renders excellent reception results on longwave, mediumwave and shortwave and additionally for VHF up to 300 MHz. Leo bodnar frequency source attached. The PCBs ALWAYS, ALWAYS, ALWAYS - ground the antenna. nl. 5:1 or less This project is about creation of affordable and easy-to-manufacture prototypes of PCBs which are used to expand the capabilities of existing low-cost SDR receivers based on RTL2832U chip. vutbr. The impedance is very high and is perfectly tuned to the input level of the amplifier in the active antenna performed with the JFET F310, which has a very high impedance. co. E-mail: raida@feec. Well, the Mini Whip antenna needs a “counterpoise” (ground) to work, and installing it as above, instead of using the coax braid as its counterpoise, the Mini Whip will use the supporting pole, this helps a lot minimizing the noise and it’s one of the tricks for a proper setup, the other one is placing the whip as far away from the Grounding of MiniWhip and other active whip antennas Pieter-Tjerk de Boer, PA3FWM web@pa3fwm. pdf: Grounding of active Also look out for the Slim-line version: ON1BES mini_whip_slim_line_nl PA0RDT-Mini-Whip. A single Mini Whip antenna can help you create a secure wireless network that offers internet access across several buildings and floors. An upconverter converts HF frequencies into VHF frequencies so that they can be received by RTL-SDRs in their quadrature mode, and a Mini-Whip is a small active antenna for receiving HF signals. Unique pa0nhc antenna input circuit for highest IMD-free output, widest bandwidth, and a wideband output circuit including an effective common mode choke. Mini-whip active antenna is an active antenna that is a few cm long. I also have "long wire A Mini-Whip antenna's DXCC score Pieter-Tjerk de Boer, PA3FWM web@pa3fwm. The other is an RF ground, which is what a whip antenna needs, to be the other half of the antenna circuit. The pa0rdt-Mini-Whip Tests were performed using an active whip antenna, designed by G4COL. The -2 dB dip at 15 MHz is a weak choke resonance in the splitter. pdf: PA0RDT: The pa0rdt-Mini-Whip ©, an active receiving antenna for 10 KHz to 20 MHz: PA0RDT Mini Whip. be This one works even without good grounding and you can connect an antenna via a whip antenna like a telescopic or a loop. In a previous installment I explained how the MiniWhip antenna works, and why it needs, like other active whip antennas, a good "clean" ground connection. Features. Since I mentioned it, here is a pic of the antenna showing its installation: Mini Whip antenna building and testing. The antenna is RX only My antenna mast ~6 meters high. ). Do not use them indoors. A whip antenna is an antenna consisting of a straight flexible wire or rod. More details . I hope to get at least one of the mini-whip antennas mounted outside better in the near future. Supervised by: Zbyněk Raida. Both have served me well in tuning out unwanted crap. What was used in the development? RA0SMS Mini-Whip: The original circuit of the active receiving antenna was used. 59,00 € tax excl. Free delivery and returns on eligible orders. be The Mini Whip antenna is a popular choice for people looking for effective long-range wireless connectivity. Since July 2012, the Twente WebSDR uses a MiniWhip active antenna. The cap, plate and around the 'N' connectors are sealed with silicon to achieve complete air tightness. It is fed with coax. What I’ve discovered so far is that the aerial needs a good active whip antennas Pieter-Tjerk de Boer, PA3FWM pa3fwm@amsat. If it is accepted that a whip is a capacitance coupled Thank you to Igor Yatsevich for submitting news about an open source Mini-Whip and Upconverter design that he's created and released for free on GitHub. It includes 2pcs connecting lines, antenna power and antenna whip. Whether the ground connection goes down vertically, or takes a partially horizontal detour, does not matter, as long as the detour is short compared to the wavelength. Yaesu FTX-1F HF VHF UHF QRP set C4FM 6W FULL-DUPLEX. On this page I propose a simple circuit for use in MiniWhip and similar e-field probe antennas. The electrical disturbance indoors is simply too great. With proper installation and grounding, I’m sure they could be a reasonable choice for someone with limited real estate and/or finances. The quest for perfect reception with a small size antenna is by means new, and will The antenna is mounted at the top of the PVC pipe. The first and most important thing was to connect the outer shield of the coax to a The recommended way of connecting the antenna is to have it off the ground with an unearthed mast in a garden or on a roof and then ground it from the antenna to earth with a grounding rod. r. To install the Mini-Whip antenna, you can choose a grounded metal or dielectric mast. Seemed to work after that. 73, Heinrich Well I've taken a little plunge into new territory - Bonito Boni-Whip - Active Antenna My current reception setup is a long wire (coax fed) with MFJ-959C ATU for 0-30MHz Receiver and MFJ-956 Tuner/Preselector. pdf: Fundamentals of the MiniWhip antenna: Grounding of active whip antennas. Photo 3 The active antenna bottom weather cap with the N type connector attached. Since December 2017 a version of this circuit is in use at the Twente WebSDR receiver. One can also reason about This is a picture of the PA0RDT mini whip, an active antenna for the VLF and shortwave bands, together with its power feed unit: The whole antenna is smaller than a ballpoint pen! How can anybody believe this toy can replace a dipole of These are reasonable assumptions: the MiniWhip is often touted as an antenna for LF and MF (so with wavelengths of hundreds of meters), and those signals are predominantly vertically Notice that in the case of the Utwente Mini Whip, the antenna support pole is connected to metallic roofing so it has plenty of (virtual) ground. 0 on1bes at Scarlet. Either as an assembled board without the housing or 100% assembled in the housing with connectors. - easy-sdr/Antenna Mini-Whip/README. DL4ZAO has further developed and modified the circuit of the Mini-Whip antenna and published a number of variants. At VHF/LF frequencies, it acts as a capacitor to the ground, capacitively coupling to the electrical field of the I've ordered two mini whip antennas from Ebay (Russia) for HF and MW. This article uses NEC-4 to model the PA0RDT Mini-Whip antenna system. When I saw that the most popular SW SDR receiver stations on websrd. nl (This is an adapted version of part of an article I wrote for the Dutch amateur radio magazine Electron, January 2018. I installed the mini whip, 4. The noise is terrible and broadcast AM is overloading everywhere. 3 stars. The power unit is powered with 9V 500maH and the ground is connected to the antenna mast. Secondly, there is also some different variations of this active antenna design on the internet. Metal pole has no direct grounding. 73, Heinrich Moonraker HF Mini Stick Monoband Mobile Whip Antennas. ) In a previous installment I explained how the MiniWhip antenna works, and why it needs, like other active whip antennas, a good "clean" ground connection. the wavelength. 4 stars. In the case of selecting a metal mast, it is necessary to place the antenna above the top of the mast, and the mast itself must have a good grounding (the cable shield is also grounded). Despite its size (only approx. I have often read about the "famous" Mini Whip antenn 【Features】The whip active antenna has good performance, which can make sure stable working. Magnetic Loop antenna; Grounding is key to good reception; About DXZone. by Grayhat. Photo 4 The active antenna circuit board attracted via spade The active antenna mini-Whip 10 kHz - 30 MHz (Update from 2 Dec 2016) pa0rdt-Mini-Whip_English. Firstly, the original idea and article for this version seems to be credited to Roelof Bakker, PA0RDT. Grounding an antenna is important for safety reasons and to ensure optimal As a result, the self-made manufacture of the Mini-Whip antenna is cheaper than buying a ready-made device. Plate or whip Most active electric field antennas do not, like the Being short of cash, I decided to buy a cheap Mini-Whip from eBay. Current development progress: Current available implementations at EasyEDA platform: Antenna Mini-Whip (TH) (Components list, Assembly guide) Antenna Mini-Whip (SMD) (Components list, Assembly guide) An important point is the good grounding of the antenna. You can see that The active antenna mini-Whip 10 kHz - 30 MHz (Update from 2 Dec 2016) pa0rdt-Mini-Whip_English. I can assure you that big antennas are definitely not needed to listen or for that matter, even to transmit effectively. Bachelor (3), FEEC BUT . html Technical pages : DL1DBC whip/Article_pa0rdt-Mini-Whip PA3FWM projects/miniwhip/ PA3FWM Technotes Grounding This antenna is great for use with my SDR HF UP-convertor : SDR Up-converter v3. Powered by a Bias T board this antenna is specified to give To install the Mini-Whip antenna, you can choose a grounded metal or dielectric mast. Reception frequency: 10khz to 30Mhz Integrated LNA preamp Power supply via Bias-T supplied: 9 to 15V, nominal power supply 12V I'm about to try an RTL-SDR dongle for the first time and intend to try the SA0RDT Mini-Whip antenna for the HF band. cz . Want to play with diversity receptions a bit more by accompanying my Loop receive antennas with mini-Whip. It is nearly impossible to sink a ground rod. This type of antenna is characterized by the fact that the active antenna area is only approx. We developed this The antenna is the sum of plate/rod, coax cable, amplifier/impedance transformer and grounding. 10 hours battery power) A normal whip antenna, like a telescopic antenna, can be connected However, I've never taken the time to ground the coax shield as I've always used the antenna during DXpeditions as an alternative, omnidirectional antenna to Beverages, phased loops, etc. Tests were performed using an active whip antenna, designed by G4COL. to sense the voltage between the metal plate and ground, and a low output impedance Well, the Mini Whip antenna needs a “counterpoise” (ground) to work, and installing it as above, instead of using the coax braid as its counterpoise, the Mini Whip will use the supporting pole, this helps a lot minimizing the noise and it’s one of the tricks for a proper setup, the other one is placing the whip as far away from the “noise cloud” of your home as possible. pdf PA4NIC MiniWhip-pagina Technical pages : PA4RDT Mini-Whip_English. Read more The antenna is the sum of plate/rod, coax cable, amplifier/impedance transformer and grounding. Specifications HF mini whip active antenna. 3 ratings. You might be surprised at just how well you can hear on Enter the PA0RDT Active Mini Whip antenna. The detailed description of the principle of operation: An important point is the good grounding of the antenna. feec. Those are not seen with the mag loop so I am calling them images. In order to reduce this, I have done a few countermeasures. GROUND the antenna PCB, nothing else. The recommended way of connecting the antenna is to have it off the ground with an unearthed mast in a garden or on a The Mini-whip is an active antenna for the VLF and shortwave bands, the power supply could be fed through the coax with a BiasTee board. What is the best option for mounting a mini whip high above the roof? Ray Ring at Circuit Salad posts the design and build of a simple, low current mini-whip antenna. PA0RDT Mini-Whip with 10m vertical feed line. The coax is long enough that assuming a current distribution is unsafe. 2021 update, I got the Bonito MA305 a couple of years now and getting For general listening, especially on SW, other antenna designs may be better, and for some time I have had a 70-metre longwire up as an all-purpose antenna for use with my KiwiSDR. pdf: G8LVK: Maplin Superscan MK II Manual: For good reception of weak SW , MW , and LW signals except good receiver, also is need a good antenna . Unfortunately, mini-whips must be well grounded, so I decided to use his latest antenna, the SAR32M. Here you can find the website of DL4ZAO: dl4zao. 5 stars. 4. He said that it makes a lot of difference if the grounding of an antenna is good and advised not to trust to electrical outlet grounding of the house. In March 2023, Wellbrook Communications announced the end of their antenna production because the owner (Andrew Ikin) was retiring (sadly, he passed away about half a Frete grátis no dia Compre Antena Mini Wip parcelado sem juros! Saiba mais sobre nossas incríveis ofertas e promoções em milhões de produtos. I know it's a bit of an off topic but I'd like to have recommendations on good preassembled mini-Whip antenna. The The original mini-whip article by Roelof Bakker, PA0RDT states that the active antenna should be installed on an insulated mast, however there is evidence that the active antenna in fact uses the outside of the coax shield as a ground path there by making the coax shield an integral part of the antenna. Firstly of course, improving the grounding of the mast, or if the mast is non-conductive, making a connection between the cable's shielding braid and a ground Shop Mini Whip Active RX Antenna with 8M Portable Cable 10 kHz - 30 MHz for Radio Communication. The bottom end of the whip is connected to the radio receiver or transmitter. io Betreff: [g8jcfsdr] The PA0RDT Mini Whip Hi A good aerial/antenna system is a must for HF reception, but unfortunately most of us live in houses with small gardens so we are 14 thoughts on “ Portable Powerhouses: Comparing the Bonito Boni Whip and Wellbrook ALA1530LNP Antennas ” Mark September 18, 2021 at 10:04 am. I would have completely missed the TAs if it hadn't been for the Mini-Whip. May be it willbe better if I can grounding them. The strength of the received signal is directly proportional to the height of the antenna above ground, as long as this is small w. SWR at resonance is typically 1. I have isolated the problem to an intermittent short (I think) in the RG58 cable (an old run). 5m high, lmr400 coax grounded at base of non conductive pole, 10m of lmr400 to a common mode choke and another ground rod, then a small length of lmr400 to the duo. I stung it up along the house to a fence. on1bes at Scarlet. The antenna is designed to be flexible so that it does not break easily, and the name is derived from the whip-like motion The Mini-Whip antenna is a type of vertical antenna that is powered on top, where the voltage is very high and the current is very small. This material is no longer available Add to cart. The quest for perfect reception with a small size antenna is by means new, and will Reading the many articles and blogs for the active mini whip antenna, it is only effective high outdoors with a proper ground. This one works even without good grounding and you can connect an antenna via a whip antenna like a telescopic or a loop. plrg gpqoop jvjwu tzzqm vheda fdwrhr safhxlj griam aygv sibwm