2m sota antenna SOTA – VK1AD at Isaacs Ridge VK1/AC-041. 2m / 27ft and a coil for the 30-meter band. Target: to check if moving both appex towards the holding pole would affect the results. Are interested in a 6m oblong loop? I have constructed the lightweight 150 gram (5. Map courtesy of SOTA Maps. Parts: Section of nylon kitchen cutting board 50 x 30 mm x 7 mm (2 inch x 1 1/8 inch x 1/4 inch) 2 x 495 mm 6 section telescopic antennas with M3 holes, Since building a 6m coaxial dipole in January 2016 and later a 2m coaxial dipole in February 2018, I have often thought how a monoband half-wave vertical coaxial dipole would perform on 28 MHz. It is build from basic This antenna works equally well on 2m 146 MHz, adjust each element length to 485 mm. SSB, CW, data? Yes. The package includes a 2el HB9VC PCB yagi which has turned out to be a great addition for portable work, particularly from a hilltop with a good uninterrupted view of the horizon. Ideal for SOTA, POTA or just making better use at home, accessing repeaters etc. VHF 2m band Moxon beam antenna, backpack foldable by OE5JFE. Pagers were the worst on my little VX6! VHF/UHF, portable operating, backcountry adventure and technical stuff A great website on SOTA with a 2m HT. The deployed length of this one, by the way, is about 16. These antennas vary in quality but they are universally poor performers compared Saturday 13 March 2021 - working DX SOTA chaser stations in New Zealand and Indonesia, SSB voice mode. Deployed within a few moments and you have 2 bands with decent gain at a L'antenna Oblong é un'antenna Loop di forma rettangolare. The current unit on offer is version 2. Enjoy SOTA, it’s a blast. OE6ALK 5 February 2020 16:05 1. 500mhz in MMANA. 2m” (5m) mast in use for SOTA in Nevada 2m Slim Jim portable antenna for SOTA The success of 2m HT contacts will generally be based on the quality of the HT antenna, which in most cases is a base loaded 1/4 wave. ATU needed? No. That might just be down to my engineering skills. Upgrade Your Antenna. for SOTA or GMA activations. G8CPZ 28 November 2019 20:57 18. 2 MHz USB for SOTA activations without forking out loads of dough for an ICOM IC-910 or IC-9100? Answer a lightweight all mode 2. Work in progress - Changelog: 2019-06-20: Recent tests: Use a slightly thicker wire (1 mm²) for better bandwidth and easier tuning 2019-05-05 Lightweight portable QRP 2m & 70cm half wave dipole for SOTA or an emergency antenna for the 2m and 70cm Go-box. ? 73 Chip W1YW W1YW, Jan 29, 2022 #8. The primary pole I’ll keep using is the “7. Credits to VK2ZOI (SK). 4 m long this sturdy 2m antenna is complete with 3m coax and a BNC plug at the bottom and a nylon cord loop at the top. The objective is a low takeoff angle. com. All for Amateur Radio operating. For low power QRP portable field/SOTA work you can mount the antenna on a telescopic pole or hang it from a tree branch. Data sheet DE 18503. Réglable par tube coulissant à la base et brin télescopique au sommet, longueur maximum de l'antenne : 2,7m I have added another 8 mm hole for vertical polarization mounting for 2m FM SOTA contacts. It fits in every bag and is ready to use in seconds. I've reached repeaters over 100 miles away with a Diamond SRH770 antenna, and had simplex QSOs upwards of 150 miles with a 3 element beam. So far, most of the SOTA VHF activity in North America is on on 2m FM, the I have a commercial 2m Moxon, it breaks down quite small but to support it you need something stronger than a SOTA fishing pole though. . The 2m oblong antenna is very popular in these parts. Tuning tips and mounting options enhance its efficiency in construct a portable 2m slim jim antenna for improved ht signal quality utilizing 450 ohm ladder line the design offers flexibility durability and easy deployment tuning tips and mounting options enhance its efficiency in Sota-antenna duoband is a specialized antenna designed for dual-band operation on 2 meters and 70cm. 25dB increase in maximum gain by lifting the antenna from 2m to 9m (the top of a 10m The area I live near Canberra in Australia has many SOTA summits that are easily activated on 2m with a HT. Another idea Steve - if you have a 1/4 2m mobile whip on your car screw it on the back of the FT-817ND, switch the VHF/UHF antenna setting in the menu to rear and that works quite well (better that the supplied rubber duckie) - Antennas. M1WML and KI4POT like this. 2m is the more useful band for SOTA. Antenna A is our GO-TO antenna for VHF SOTA is the 3-element Yagifrom Arrow Antenna, handheld so the boom is about 5 feet off the ground. Construct a portable 2m Slim Jim antenna for improved HT signal quality. KI4POT Ham Member QRZ Page. Elsewhere in amateur radio circles this antenna is known as a 2m Flower Pot Antenna. 5 feet or 5 meters. Ed’s uses 300 ohm which is lighter and easier to wind up and stow which is an advantage for SOTA users vs the N9TAX version using 450 ohm ladder line. These antennas are lightweight and assemble/dissemble easily, Portable lightweight 4-Element 2m DIY Antenna (SOTA) Here is the description of one of the antennas I frequently use during SOTA activations. Ideal antenna for SOTA or Park operations on 2m. I recently purchased a new 2. Roughly speaking, the VHF SOTA equation is the sum over time of: I read through the SOTA Reflector and found Richard G3CWI’s response to a similar question: So, I set about modelling a centre-fed half-wave vertical dipole at 145. Power rating 125 Watts. I follow this forum for quite a long time. ) Simulation of a 2 element Delta according to sketch D (the 2BD model). How to build a lightweight Yagi antenna for portable use e. 102m (starting position, without adjustments for wire velocity factor). 2m dipole antenna 2m SOTA Antenna 6m 50 MHz Antenna 6m Band 6m opening 6m SOTA Antenna 6m vertical antenna 23cm antenna 23cm SOTA 23cm SOTA antenna 23cm Yagi 50 MHz Band 70cm Band 70cm SOTA Antenna 80m SOTA Antenna 144 MHz 2m Dipole Antenna 430 MHz Band 500 mW 1296 MHz Aircraft Enhancement Amateur Radio Austria 2m Slim Jim portable antenna for SOTA activations The 2m band offers a range of voice and digital transmission modes suitable for SOTA activations. 73 de Alfred In my arsenal of portable SOTA antennas, I have 2m and 70cm oblong loops. I Today from a SOTA peak (Yellow Rabbit Hill) 40 km west of Canberra using this antenna during a sporadic E opening, I worked ZL1SSW (2343 km) on 6m 50. Loop circumference: 6034 mm; There are times when you may need more gain than the standard J-Pole antenna. My SOTA rig is a Yaesu FT-857D operating at 25 watts. A handheld radio is commonly used for SOTA operation because it is a self-contained, compact radio. Antenna Bis a dual-band J-pole See more Portable Antennas, Accessories and more. 2 MHz vertical 1/2 wave Coaxial Dipole antenna project for your home QTH, SOTA, portable field operations/WICEN exercises or the emergency 2m Go-box. 2m” pole. It's fun to see how far you can get from summits. The antenna can also be used as a The Band Hopper II, two-band portable dipole antenna system. Details; Technical Data; Details. A homebrew 2m 144. Peter VK3YE recently published a 2m rectangular loop antenna article in Amateur Radio Magazine edition 5 (Sep-Oct 19). The Sota-antenna duoband is a reliable choice for those SOTA antenna dual band 2m/70cm; Download. At a glance: Bands 20 m, 40 m. Rain proof and flexible with a low SWRplug it to your 2m handy and extend your range. The feedpoint impedance of the 2m rectangular loop is 50 ohms thus avoiding the need for a 1/4 wave impedance transformer. The 23cm transverter's default configuration is Hello, I consider trying a so called flower pot antenna (without flowers or pot). There's some 70cm activity, but not much (I called CQ SOTA on 70cm for a while yesterday and got nothing after getting several For Summits On The Air (SOTA), I’ve been using just the VHF/UHF ham bands, with the 2m band being the most popular. Does anybody have calculations, simulations or even Here are three operating tips when using 2m FM for SOTA: 1. Understanding It The Slim-Jim was the brainchild of Fred Judd G2BCX who named it due to the J Integrated Matching and the fact that it’s, ahem, Slim. Till now I could not find info about the optimum height above a flat ground to the lower end, where the common mode choke is. Mt first SOTA QSO with a station in Indonesia, YB1TIA. Today from 40m End Fed Half Wave (EFHW) Antenna 2m Slim Jim Antenna for SOTA – 4 Jun 2013 Squid Pole Support for Testing Antennas HF Magnetic Loop for Chasing SOTA – Part 1 SOTA Mountain Hunter Award – 15 Lightweight portable QRP 2m & 70cm half wave dipole for SOTA or an emergency antenna for the 2m and 70cm Go-box. This is the second oblong I have built. Parts: Section of nylon kitchen cutting board 50 x 30 mm x 7 mm (2 inch x 1 1/8 inch x 1/4 inch)2 x 495 mm Komunica HF-PRO-2 Plus T portable multiband antenna for 3. de antenna today for the first time. Egalement compatible avec les bandes de fréquences 40Mhz et 70Mhz. My personal preference is SSB 144. Dear friends, If you are interested, please find a brief description of my self-built SOTA YAGI here on my blog. Post updated 5 May 2019, scroll to the bottom for Robustness - SOTA gear needs to be unbreakable and my versions failed to survive. 130 MHz. 5Mhz (80m), 7 to 30Mhz, 6m (50Mhz) and 2m (145Mhz) frequencies and for use in portable, QRP or SOTA. 2M0OSB 18 August 2024 19:38 19. The Sota-antenna duoband is a reliable choice for those 2m SOTA Antenna (5) 2m Yagi Antenna (6) 40m center loaded vertical (3) 6m Band 50 MHz (5) 6m SOTA Antenna (3) 70cm SOTA Antenna (4) 80m SOTA Antenna (2) Airband Antenna (1) Aircraft Enhancement (17) Amateur Radio (179) Australia (3) Austria (7) Battery (1) Bi-Quad Antenna (1) Canberra (6) Constructed from 450 ohm feeder and around 1. Just follow the instructions in this video, and you will have a highly efficient antenna for emergency or field use. For most activations, I use a 3-element Arrow II yagi antenna that has a gain of about 6 05/03/2022 in 2m SOTA Antenna, 2m Yagi Antenna, Amateur Radio, SOTA, SOTA Antenna, Summits on the Air, VHF Antenna, VHF DX. Another popular antenna is the 2 Meter / 70 cm Yagi antenna made by Arrow Antenna. g. These radios always come with a rubber duck (electrically-short monopole) antenna. Portable Magnetic Loop Antenna for 2-Meter Band: Special parts set for a portable 2 meter magnetic loop antenna according to DC7GB (see FA 8/2017) Scope of delivery: Board 43. 30 inches x 35. Also compatible with 40Mhz and 70Mhz frequency bands. SOTA Antenna Dualband 2m/70cm. It is horizontally polarised. 200 MHz however this choice may exclude Elk Antennas makes a log-periodic antenna that covers 2 meters and 70 cm. These antennas are lightweight and assemble/dissemble easily, which is important to hiking radio operators. I usually pull the antenna up on a 10m / 33ft fibreglass mast. I used the 4 ele from G/WB-002 and managed to work approximately 20 contacts on 2m SSB and about 10 on 2m FM. 2 Likes. Saturday 13 March 2021 – working DX SOTA I love doing VHF SOTA. Connects direct to your radio. 5 watt 23 cm transverter from Hristiyan LZ5HP in Sofia Bulgaria. The antenna is based on a design by DK7ZB and former NUXCOM. No matter if on holidays or on the go or permanently in your car, the Sota-Logper is always 2m Slim Jim portable antenna for SOTA activations The 2m band offers a range of voice and digital transmission modes suitable for SOTA activations. It weighs less than 500 gramms and measures around 65 cm when disassembled. Just a quick message to let you know I tried my Nuxcom. With its dual-band capability, it offers versatility and convenience for radio operators looking to cover a wider range of frequencies. Work in progress - Changelog: 2019-06-20: Recent tests: Use a slightly thicker wire (1 mm²) for better bandwidth and easier tuning 2019-05-05: Slightly shortend the Sunday 18 June 2017. Arrow does not specify the gain on this antenna but it has been measured at the Central States VHF Society conference to be ~6dBd. Caratteristiche principali: 144-145, replicabile anche per 50 MHZ e HF Pol For Summits On The Air (SOTA), I’ve been using just the VHF/UHF ham bands, with the 2m band being the most popular. Another popular antenna is the 2 meter / 70 cm Yagi antenna made by Arrow Antenna. That said a good antenna always helps. Elk Antennas makes a log-periodic antenna that covers 2 Meters and 70 cm. The odds of contacting anybody on 2m simplex recalls the famous Drake equation that weighs the odds of contacting intelligent life against the vastness of the universe. Hi Sabrina, . But on 2m your propagation boils down to line of sight into a population who might hear you. I've been producing these antennas professionally for over a decade now and have sold over 30,000 units. 5 watt 23 cm 1296 MHz transverter from SG-Lab in Sofia Bulgaria. With twice the gain of a standard J-Pole antenna, the 2 meter Slim Jim antenna is a J-Pole on steroids! The Slim is an end-fed folded dipole antenna that has a gain of 6 dbi and a nice low RF take off angle. I displaced both points to simulate my design, according to sketch D, having a How do you get on 23 cm 1296. Post updated 5 May 2019, scroll to the bottom for It has a mechanical length of 8. So how do you improve the quality of your signal when using a HT? You Consequently handhelds can be a bit “deaf” on summits that have masts with lots of antennas poking off them. If the environment does not allow a pole for any reason, I use the 30-meter band with the PAC-12. The “7. pdf. Good luck for future 2m QSOs 73 Sabrina. Antenna dimensions after tuning. Fine for all modes Combined with the 7M SOTA Pole I took this dipole on Holiday to the Lake District, only manged to use it once, but I Authentic N9TAX VHF/UHF Slim Jim J-Pole For HT 2m 70cm Antenna 16' Coax | eBay. 13 March 2021 - VK1AD SOTA activation of Isaacs Ridge. 40 inches with "etched" With only a pack size of 64cm in length this antenna is a constant companion. Equipment - Yaesu 2m HT, Yaesu FT817ND, 7m telescopic pole, homebrew 40/20m Antenne multibande portable Komunica HF-PRO-2 Plus T pour les fréquences de 3. I presume mostly for 2M, not 440. 3/50. My first guess is 4m agl and 5m of cable from the ht to the choke. Utilizing 450 ohm ladder line, the design offers flexibility, durability, and easy deployment. 73 de Joe thingiverse. HB3XTZ: I use a RH 770 telescopic antenna for 2m SOTA. Us Hams do like to give interesting names to our contraptions. This is my first post. versus antenna centre height above ground level and shows that there is 4. 5 Mhz (80m), 7 à 30Mhz, la bande 6m (50Mhz) et 2m (145Mhz) et une utilisation en portable, QRP ou SOTA. This antenna is tailored for users who require efficient communication on both bands. I had 17 2m QSOs this past Saturday from the highest point in Georgia, but I also enjoy running CW. A little Do you need a cheap, easily-stored 2m/70cm antenna for your next POTA/SOTA activation? If this is the case, look no further than this modified "Slim Jim/J-Pole" antenna from Mike (M0MSN). Hi, greetings to this community. So far, I have made six SOTA/POTA/WWFF activations since my license upgrade in January 2023 on the 30-meter Sota-antenna duoband is a specialized antenna designed for dual-band operation on 2 meters and 70cm. I use a RH 770 telescopic antenna for 2m SOTA. 200 MHz however this choice may exclude new-comers to amateur radio, who may be building their war-chest of radio gear. 2 MHz = 6. Summer has arrived in the southern hemisphere, now is an excellent time to construct a 10m half-wave coaxial dipole for the upcoming summer Es. The formula (metric) for a full wave loop is 306. 2 ounces) The results were promising: 4,2 dBd at 30º elevation (8,76 dBi – 4,56 dBi = 4,2 dBd) and the tipical pattern of a beam antenna! 3. The antenna went up very quickly, was incredibly light and seemed to have good directionality. Portable 2m 145MHz VHF Yagi for SOTA by Koppo - Thingiverse A list of needed materials can be obtained by Folks, As my 2m Slim Jim is no good for 70cm I was looking for an alternative antenna to use, I found the PA0FBK design (that is mention in another reflector thread) and having carefully cut one from some URM-76 that was lying around the shack found it was resonant around 139MHz and no good at all on 145MHz - my Analyser does not cover 70cm A homebrew 2m 144. Balun included Yes. 3. The Slim Jim is vertically polarized, omni-directional and offers increased performance over the humble 1/4 Didnt occur to me this was a good SOTA antenna. 3 / frequency, therefore 306. For most activations, I use a 3-element Arrow II yagi antenna that has a gain of about 6 Portable lightweight 4-Element 2m DIY Antenna (SOTA). This makes the 2 Meter Slim Jim antenna a great solution for repeater sites, data and packet The longer mast is great, but the additional height really isn’t necessary, so I’ll probably bring the pole when I’m doing shorter SOTA operations. It is easy to make, light to carry and packs small. mbbag hkbzvj iwy mnej wbmm gvkld fcy epbxsnx ldtozn obacz wqf zdt zayf zfgfxi zabp