W6nbc Antenna

My Experience with APT Weather Satellites. The result — a very stealth 2 meter antenna. An Ultra-Simple 2-Meter Antenna You’ll get J-pole performance from this base station vertical antenna built with coat hangers and PVC pipe. Second, the cavity(s) had to be easy to tune. Same dipole antenna with coax traps would have about 0,6 dB total loss - the double, but a negligible difference on the S-meter of your DX correspondent! The exact resonance frequency of the trap is important to define by construction. We were lucky in that the lodge has big, screened windows. A simple technical look at an HF horizontal loop of wire strung around your house at rain-gutter height, plus. I really like a lot of the aspects of this antenna design, I just hated making the traps (and they aren't quite tuned as well as I would like), but in the end I want an antenna that will fit in my (long, but not roomy) attic. This is more work but the best. Setting the Standing Wave Ratio is an important installation procedure, but not one to fret over afterwards. It is a half wave antenna mounted vertically and the bottom 1/4 wave of the antenna is a metal pipe in wich the coax runs through it. [email protected] These are the instructions and reasoning that I was following, I have to say I thought the purpose of the ladder line was to be a balanced part of the feedline, and thus not radiate, but to be frank, when I asked the best way to build and check a balanced line antenna matching unit from 5 different people, I got five different answers. This is very important. Below is the finished antenna with an offset attenuator mounted on the end of the boom. This little loop is a perfect example (see Figure 1). Possibly a great solution for hams bound by CCRs. So I am looking to purchase a permanent CB antenna and trying to figure the best options for mounting location, given the rooftop tent. It couldn't be just any antenna; I needed one. * QST 2015 - 2019 ARTICLES * First Issue of QST, December 1915 September 2015, pages 56-57 * * July 2019 75/50/25 QST July Issue for: 1944, 1969, & 1994 W1AB 102 ANTENNA: Superior Performance from a Unique HF Vertical W6NBC 39-41 ARES: Disaster Area Deployment Considferations (Part 1) Water K1CE 81-82 CLASSIC: Denmark's World War II Radio Resistance K6HRU 83-84 CW: The Vibro-Debugger, clean up. The antenna illuminating the dish's surface is made out of a coffee can!. The QST Cover Plaque Award — given to the author or authors of the most popular article in each issue — is determined by a vote of ARRL members on the QST Cover Plaque Poll web page. There are three ways to tune the antenna: (1) shunt a little L or C across the feedpoint, a short hair pin or cap of circa 10 pf. Mind you, we followed a. , KK6DA, Los Angeles 👍. Cast a ballot for your favorite article in the May issue today. During 2000 I found that the call VK5DC had become available. Short 20 meter vertical antenna. The winning article for the January 2019 QST Cover Plaque award is "The 2-Meter Slot-Cube Antenna" by John Portune, W6NBC. One aspect is knowing how to build antennas from items you have laying around in your garage, office, or if you are desperate, dumpster diving. This is very important. The counterpoise is off the ground only about 5 feet so the antenna is still ground mounted. This wiki was started to document Frequently Asked Questions across various forums (amsat-bb mailing list, AMSAT-NA Facebook group, #amsat on Twitter, QRZ satellite forum). 225 and it is a. For an overall fine tune, connect the Wattmeter and dummy load to either the transmit or the receive port of the duplexer. women's size size converter european size 38 40 44 46 uk 10 12 16 18 body measurements in cm chest body in cm 78 82 84 88 90 94 96 100 102 106 waist body in cm 62 66 68 70 72 76 78 82 84 88. Episode 143 Roy Lewallen W7EL: Roy Lewallen, W7EL, approaches ham radio from an engineering and even scientific point of view. In lieu of "radials," stuff like a galvanized garbage can lid, or almost anything magnetic and large enough usually works pretty well but such things may not be terrible portable. 975 antenna by generating a difference in potential between the antenna and an 'earth'. it's a no-radials, vertical dipole 80-10/6m antenna. I've gotten a great report on a repeater about 30 mls away. This four foot diameter dish antenna is designed for microwave communication in the amateur 2. com David A. Dual Band Tape Measure Antenna for SO-50 Ive now received the tape measures, ordered from Amazon (these here - 7. The resource is currently listed in dxzone. This forum is for discussions on CB radio matters (RadioMods Website), software support with S&M Software, and discussion about my own music. Only at eHam. I pondered some ideas that I had found online from John, W6NBC that had home brewed a coaxial 1/4 wave FM antenna using a metal tube from an old floor lamp with the coax passing through the middle with the shield soldered to the tube. PLEASE GO TO HTTP://OJAIVALLEYCERT. I am new to the ham radio scene, by new is trying to figure out on using and installing the equipment. You will need a wide-range antenna coupler to match it; the one built into your transceiver might not do it, unless you are lucky. Antenna, Antenna, Antenna! Spend your money on GOOD antennas! I have both a Baofeng UV-5r and a Yaesu FT-60. SWR is more than acceptable with the tuner. • 2 meter slot antennas need a minimum dish size of 28 inches • 440 mhzslot antennas need a minimum dish size of 16 inches • The slot antennas exhibit very good bandwidth i. Buckmaster Antennas 7-Band OCF 7-Band STEALTH 7-Band QRP 4-Band OCF 8-Band OCF Features Installation Order an Antenna/Coax Reviews FAQ Coax Cables Antenna Support Rope Stainless Pulleys Line-Grip RF Chokes HamCall Callsign Database Owner Benefits Software Features HamCall Support/FAQ Third-party support User Opinions Subscriptions. I built this antenna this past week and was able to get swr down to 1. I'm currently using 17' Tram 1481 (2M/70cm) antenna attached to a 20' foam filled PVC mass, I also have three roll-up dual band (2M/70cm) antennas by Nelson Antennas. Sleeveless Sleeve Dipole Feed Line Choke Coax Coax Feed Point Figure 3: A Sleeveless Sleeve Dipole Antenna The solution to the vertical mounting dilemma is a type of antenna called the sleeve dipole as shown in Figure 2. Same dipole antenna with coax traps would have about 0,6 dB total loss - the double, but a negligible difference on the S-meter of your DX correspondent! The exact resonance frequency of the trap is important to define by construction. by Abdul-Wahab April 25, 2019 Abdul-Wahab April 25, 2019. Then, Larry Shimerka, KC8VCC will show his slot antenna built from the article and he'll check his work with an antenna analyzer. This year's Summer Camp is taking place in Bankya, Bulgaria, under the sponsorship of the Bulgarian Federation of Radio Amateurs (BFRA), Bulgaria's International Amateur Radio Union member-society. This four foot diameter dish antenna is designed for microwave communication in the amateur 2. Режим поперечного излучения достигается определённым соотношением диаметра витков спирали (диаметр должен быть гораздо меньше длины волны) и шага между витками. Time owned: 3 to 6 months. 2 to 1), being around three MHz above the CARS 2-meter frequency of 146. No matter where it is mounted on the vehicle. I researched the inverted L, with plenty of long radials these seem to work well on the low bands for DX. W6NBC Articles 3D Groundplane Antenna Mount VEC -- Laurel & W5YI. My Experience with APT Weather Satellites. The result — a very stealth 2 meter antenna. The design offers easy construction, simple deployment, omnidirectional performance comparable to a 2-meter J-pole, low SWR (see Figure 2), and compactness. Lowell, N1LO This is a combination center and top loaded multiband antenna. I wish Mike all the best you made the net a success and ran the best VHF/UHF voice net I ever was involved with. I've gotten a great report on a repeater about 30 mls away. This means that the antenna signals (in N1BYT's design, where the antenna load Z1 is an untuned inductance) encounter the non-linear active device without the benefit of filtering and thus AM blanketing or IMD are more likely to occur than in a receiver where the antenna signals are first filtered by the oscillator's tank. This Pin was discovered by N6VOA. Great because the pipe is part of the antenna and also serves as a mount. you are not going to find a radio that cheap in the VHF commercial band. Home-brewing a satellite antenna is a terrific beginner’s project, and several designs are found at online locations. Now I really need to get crackin’ on that backyard satellite antenna–maybe W4RNL‘s turnstile antenna (from the Aug 2000 QST), or W6NBC‘s quadrifilar helix antenna (from the Oct 2009 QST). Antenna, Antenna, Antenna! Spend your money on GOOD antennas! I have both a Baofeng UV-5r and a Yaesu FT-60. John Portune W6NBC. 8:1, followed by the 40 m wires then the 80 m wires. In Aug 2018 QST John Portune (W6NBC) described an improvement he made to ordinary windowed ladder line. The main category is Antennas for 2 meters band that is about Antenna projects for 144 MHz. I find this a lot easier too build than a J-Pole and the author claims his antenna will perform as well as a J-Pole. I've built the $4 dual band yagi for working the satellites and local nets. You can find the shout box show notes on D-STAR Round Table Board Shoutbox History Gary KF0TW: K1LHO: Mike, From round table a couple of weeks ago: This click on 2 meters and none on 440 is normal behavior for my 7100. These dipoles are an excellent solution as a reference for antenna gain measurements, wireless testing and chamber reflectivity evaluation. During 2000 I found that the call VK5DC had become available. This one, by AA2TX, describes an antenna he calls a parasitic Lindenblad (here’s a link to an AMSAT article). You Don't Say placed an observative post today on Limited Space Antennas - The Small Transmitting Loop AntennaHere's a quick excerptEven if you only have some copper tubing or an old aluminum bicycle rim along with a few junk variable capacitors - these folks have built…. Crosby, W1EJM • "A Compact, Removable 20-Meter Loaded Vertical Dipole" by Stephen Appleyard,. The slot antenna is vertically polarized as it stands and I'd like to try ssb on the band. This area is for use by TWiT staff only. Could do 70cm band on one of those 18" dishes, or maybe 6m on a C-band dish! Of course the latter would defeat the advantage of stealth. 25" to keep the gap between them at about 1/8". the Radiation pattern is nutz when you try to model it. The antenna wire lengths before trimming are 5. Antennas are intended to intercept electromagnetic energy and are particularly efficient in doing so when their dimensions correspond to, or approach, the wavelength of the source. but unlike GMRS, VHF licenses are for one specific channel, not the entire band. pdf - from January, 2012 QST magazine Links last checked 07/01/2019 K6LCS’ “modified” Arrow Sat Antenna - model 146/437-10WBP. Small Transmitting Loop Tuners from MFJ This is from the "I'm not paying attention department". W6NBC Articles 3D Groundplane Antenna Mount VEC -- Laurel & W5YI. Check out these fine designs and create your own satellite antenna. Dummies guide to aircraft antennas Radio and VHF Transceiver all refer to the aircraft communications transceiver which operates across the VHF aircraft frequency band of 118. The Technician license doesn't offer much in the way of HF (shortwave) privileges, and most Techs seem to stick to 2 meters and 70 cm (440) for the simplicity and affordability of equipment and antennas. I built this antenna this past week and was able to get swr down to 1. This is more work but the best. Then connect your transceiver (or MFJ-259) to the antenna port. the ratio of the Gain to the noise. How to Use Your Antenna Tuner by Scott – N4ZOU. The Suction Cup Antenna Mount is the easiest way to mount an external antenna to your RV without having to permanently install or wire through the RV. Alexa - W6nbc Competitive Analysis, Marketing Mix and Traffic. May have to do with what is normally connected to the antenna for 440 vs not for 2 meters. Dual Band Tape Measure Antenna for SO-50 Ive now received the tape measures, ordered from Amazon (these here - 7. At Greyline Performance Antennas, we pride ourselves in having earned awards and other reputable achievements around our antennas. Again following Table 6-1, first touch up the Bp cavity(s) on both sides. These end-fed sleeve dipole antennas are truly omni-directional having excellent symmetry with low VSWR. Please do not add or edit any content within this section. Search the history of over 373 billion web pages on the Internet. I've gotten a great report on a repeater about 30 mls away. from topfeedremix https://ift. Playing around with antenna designs: Slot Antennas I had never heard of a slot antenna until this month's copy of QST showed up with a picture of a 'low-profile mobile 2m slot antenna'. 06 meters from a nearby tree. The coax is normally vertical. Construction You’ll need hangers that are 16 inches wide; the 18-inch kind because they ca not be tuned to 2 meters. This wiki was started to document Frequently Asked Questions across various forums (amsat-bb mailing list, AMSAT-NA Facebook group, #amsat on Twitter, QRZ satellite forum). Choose from a range of search criteria, which include all the fields available in ULS Advanced License Search as well as radio services, station class, Antenna Structure Registration (ASR) Number, and frequency information. Nuts & Volts is written for the hands-on hobbyist, design engineer, technician, and experimenter. You Don't Say placed an observative post today on Limited Space Antennas - The Small Transmitting Loop AntennaHere's a quick excerptEven if you only have some copper tubing or an old aluminum bicycle rim along with a few junk variable capacitors - these folks have built…. Input filter for an active antenna Most active antennas for say 0 to 30 MHz consist of a short whip followed by an amplifier (or buffer) with a high input impedance (but see [3] for other forms). Similarly, John Portune, W6NBC, used steel tape for the elements in a pair of 2 meter and 70 centimeter Yagi anten-nas. This calculator enables you to test the design of an octagonal loop antenna and to answer "what if" questions until you arrive at a design that meets your needs without a lot of experience in electronics. Get your Technician Class ham radio license or upgrade your General Class license in ONLY ONE DAY, over 85% success rate. Diawa antenna switch, RCA manual fit plugs, RCA to PL-259 adapters (easy RX switching between the loop and vertical), 150 ft of cheap CAT5e cable (for the K9AY control cable) from Amazon. Small Transmitting Loop Antenna Calculator. This area is for use by TWiT staff only. and they are for one specific geographic location, not the entire country. com David A. John, W6NBC, gave the QSO Today community members a free PDF download of the plans to build his center-fed flagpole disguise antenna pictured to the left. This antenna consistently beat the 80m doublet into Europe on 40m, so it got a good bit of use. This Pin was discovered by N6VOA. Any of the common ham antenna analyzers is also useful. Episode 143 Roy Lewallen W7EL: Roy Lewallen, W7EL, approaches ham radio from an engineering and even scientific point of view. The resource is currently listed in dxzone. Advanced Search Efhw vertical. 975 antenna by generating a difference in potential between the antenna and an 'earth'. Also, any noise pickup from the coax shield will feed down to your receiver. A dual band walking stick w6nbc. W6NBC Articles 3D Groundplane Antenna Mount VEC -- Laurel & W5YI. Now I really need to get crackin’ on that backyard satellite antenna–maybe W4RNL‘s turnstile antenna (from the Aug 2000 QST), or W6NBC‘s quadrifilar helix antenna (from the Oct 2009 QST). Below is the finished antenna with an offset attenuator mounted on the end of the boom. 3 GHz band, but would also work at Wi-Fi's 2. also you need to license all the radios you intend to communicate with, not just your own unit, license is for the radio not the operator. To lower the frequency only, you can add short stubs at the corners across from the feedpoint corner. I M P O R T A N T * N E W * You will soon be required to have an FRN before testing. I built this antenna this past week and was able to get swr down to 1. Search the history of over 373 billion web pages on the Internet. W6NBC Wins the January QST Cover Plaque Award. 10-80m MOBILE HF MULTIBAND ANTENNA PROJECT February 17, 2001, by Mark D. Eh antenna plans. His measurements were in the range. for adjusting or comparing antennas and so on, and it works best with AM and FM signals. I would like to get a Firestik style antenna, maybe with the added spring which seems to be recommended a lot, and would like to mount it at the rear if at all possible. At our station, we had the club’s IC-746PRO connected to a 40m inverted-V antenna that we set up outside. , (2) Shorten or lengthen tubes. 5m-25mm-Measure ) The design ive decided to go with is one that can be found on the AMSAT website. All this time it was owned by John Portune of Private Registration, it was hosted by HostDime. "A Uniquely Tuned 2-Meter Transmitter Hunting Loop" - by W6NBC, QST Jan 2013 The attenuator is from May 1998 QST. Portune, W6NBC, has come up with an antenna that gives good performance and has a slim profile. A Portable End-Fed Half-Wave Antenna for 80 Meters Rick Littlefield, Kl BQT Build a 9 to 1 Unun Transformer Stan Johnson, WOSJ Improve Workbench Safety with GFCI and a Kill Switch Allen Wolff, KC70 3D-Printed Coax-to-Wire Connection Blocks John Portune, W6NBC Super Simple 6-Meter SDR Transceiver James Forkin, WA3TFS Soldering Surface-Mount Devices. Get your Technician Class ham radio license or upgrade your General Class license in ONLY ONE DAY, over 85% success rate. Or maybe it’s time to concoct that servo-driven crossed yagi for auto-tracking the satellite…. - page 37 "Product Review". A balanced tuner is even. The winning article for the January 2019 QST Cover Plaque award is "The 2-Meter Slot-Cube Antenna" by John Portune, W6NBC. and they are for one specific geographic location, not the entire country. A Portable End-Fed Half-Wave Antenna for 80 Meters Rick Littlefield, Kl BQT Build a 9 to 1 Unun Transformer Stan Johnson, WOSJ Improve Workbench Safety with GFCI and a Kill Switch Allen Wolff, KC70 3D-Printed Coax-to-Wire Connection Blocks John Portune, W6NBC Super Simple 6-Meter SDR Transceiver James Forkin, WA3TFS Soldering Surface-Mount Devices. the Radiation pattern is nutz when you try to model it. Crosby, W1EJM. Here you'll only need a thru-line wattmeter, a couple of dummy loads suitable for the frequency, and an ordinary synthesized HT or mobile transceiver on the band. N3CRK builds a 220 MHz Modified Coaxial Antenna I ran across an article on the internet for a coaxial antenna by John E. No matter where it is mounted on the vehicle. Slot antennas are used typically at frequencies between 300 MHz and 24 GHz. Nuts & Volts is written for the hands-on hobbyist, design engineer, technician, and experimenter. Decent HF antennas usually have traps on the elements allowing the one antenna to be used on several bands. It is a 7-turn square loop, with side length 0. I'm looking into getting an Amateur radio license, but I'm worried about it as I have been threatened by an ebay seller who happens to be a Ham radio user, when I purchased a new antenna for my Motorola GP640 hand-held radio that I'm authorized to use for work and a 70cm band radio to (Listen to only) for studying purposes for when I do my exam. net is a Web site dedicated to ham radio (amateur radio). Get your Technician Class ham radio license or upgrade your General Class license in ONLY ONE DAY, over 85% success rate. This is very important. Man merke: vertikale Schlitze strahlen horizontal und horizontale Schlitze strahlen vertikal polarisiert. 008 - Thread: 1 -> Environment. Notice that the wire between the antenna and PCB is twisted. Made from thick-wall aluminum and under 25 inches in. Find who else is attending and connect with 51 people interested in participating at 2019 edition of Pacificon, San Ramon. 5 cm for the HF bands. "A Uniquely Tuned 2-Meter Transmitter Hunting Loop" - by W6NBC, QST Jan 2013 The attenuator is from May 1998 QST. com for some info on John Portune's "license in one day" sessions (other amateurs offer similar programs). This area is for use by TWiT staff only. Our first attempt, antenna #1, yielded an SWR of around 1. This shortened easy-to-build vertical, with no-radials, is made from surplus military camouflage poles. net is a Web site dedicated to ham radio (amateur radio). SLOT ANTENNAS Tapered slot antennas (TSAs) were first introduced in the late 1950s. The other factor is the impedance at reasonance, i. 67’in diameter (1. W6NBC Articles 3D Groundplane Antenna Mount VEC -- Laurel & W5YI. Lecturing and public speaking, especially on Amateur radio topics to any group. women's size size converter european size 38 40 44 46 uk 10 12 16 18 body measurements in cm chest body in cm 78 82 84 88 90 94 96 100 102 106 waist body in cm 62 66 68 70 72 76 78 82 84 88. The Force 12 flagpole is an effective antenna and is a solution for many people who live in restricted areas, while allowing us to be patriotic. It is not a plastic tube with a wire inside. I'm looking into getting an Amateur radio license, but I'm worried about it as I have been threatened by an ebay seller who happens to be a Ham radio user, when I purchased a new antenna for my Motorola GP640 hand-held radio that I'm authorized to use for work and a 70cm band radio to (Listen to only) for studying purposes for when I do my exam. It is a broadbanded (covers more frequency range), omnidirectional (receives equally well from any direction) antenna commonly used for public service band receivers. ham satellites in one handy portable antenna. You are thinking of a "slot antenna" but just to realize that a "slot" in the "slot antenna" is the same size as a 1/2 wave dipole, the "slot antenna", besides that it will be directional (not good for mobile use) will be quite large which you do not want (the "RC toy" effect again) as well as difficult to mount. The slot antenna is vertically polarized as it stands and I'd like to try ssb on the band. The mast was approximately 33-ft/10. MFJ Enterprises solves the problem of getting the capacitor for your loop antenna. This is more work but the best. I wish Mike all the best you made the net a success and ran the best VHF/UHF voice net I ever was involved with. TNX John W6NBC ----- Original 2009 8:09 AM Subject: [sarcmembers] Re: SARC Tower and Dish move john, do you think that a log periodic antenna might not. We were lucky in that the lodge has big, screened windows. But it's really an evaluation kit for the CME6005 and comes with an attached (and tuned) 60mm x 10mm loop stick antenna. John Portune, W6NBC, is an ARRL member and frequent contributor to QST. Great because the pipe is part of the antenna and also serves as a mount. 225 and it is a. 25 meters),. I'm looking into getting an Amateur radio license, but I'm worried about it as I have been threatened by an ebay seller who happens to be a Ham radio user, when I purchased a new antenna for my Motorola GP640 hand-held radio that I'm authorized to use for work and a 70cm band radio to (Listen to only) for studying purposes for when I do my exam. Please do not add or edit any content within this section. What marketing strategies does W6nbc use? Get traffic statistics, SEO keyword opportunities, audience insights, and competitive analytics for W6nbc. The Force 12 flagpole is an effective antenna and is a solution for many people who live in restricted areas, while allowing us to be patriotic. When moving the antenna around outdoors, the antenna performance also depends on the location with respect to other objects. It works well for an area with antenna restrictions but is what I would call a compromised antenna. Without Radials. My Loop Antenna November 20, 2013 13. The coffee can antenna is actually a sleeve dipole antenna made using a large coffee can, or other similar size tin can, in place of using radials like that of a ground plane antenna or the other half of a dipole element. , (2) Shorten or lengthen tubes. The most common material for home building small ham radio loop antennas is common copper plumbing pipe. • 2 meter slot antennas need a minimum dish size of 28 inches • 440 mhzslot antennas need a minimum dish size of 16 inches • The slot antennas exhibit very good bandwidth i. But which ones are worth the effort?. How our cramming system works: John Portune, W6NBC, discovered and Ross Peterson developed and perfected a technique based on the fact that short term memory was a fantastic aid for retaining answers to test questions for an hour or two. com in a single category. Photo : Direction finding loop antenna for 2 meter band, similar to one described in "A Uniquely Tuned 2 Meter Transmitter Hunting Loop" by John Portune, W6NBC, QST, January 2013, pp. The slot antenna is vertically polarized as it stands and I'd like to try ssb on the band. John Portune, W6NBC, has a life dedicated to education from his early days at a British grammer school teacher to his current one day, all day, ham radio classes where hundreds of people have gotten their first licenses. Episode 009 - John Portune - W6NBC John Portune, W6NBC, has a life dedicated to education from his early days at a British grammer school teacher to his current one day, all day, ham radio classes where hundreds of people have gotten their first licenses. There’s more to it than what is in your manual or on most how to do it websites! What more is required other than an SWR meter and properly setting the network components for matching the feed line to the antenna tuner?. 25" to keep the gap between them at about 1/8". โชคดีที่มีเพื่อนนักวิทยุสมัครเล่นใจดีคือคุณ จอห์น (John, w6nbc) ได้ทำการคำนวนและทดลองให้เราแล้วว่าการติดตั้งสายอากาศที่ตำแหน่ง. Larsen nmo2/70b (uhf/vhf) and Nagoya NA-320A Triband HT Antenna for the baofeng. ham satellites in one handy portable antenna. The resource is currently listed in dxzone. 5 m between balun and 20m trap, 5. We were able to easily remove the screen and snake the coax out to the antenna. Bolster your operation for long-term use anywhere with “A Compact 2-Meter Base Station Antenna for Rugged Use” by John Portune, W6NBC. Could do 70cm band on one of those 18" dishes, or maybe 6m on a C-band dish! Of course the latter would defeat the advantage of stealth. There is no solder tag, so prior to fitting the antenna to the case, its best to solder the remaining yellow with onto the antenna base next to the screw hole. I really doubt the Comet dual band antennas can operate efficiently without a ground plane (normally provided by the vehicle). You will need a wide-range antenna coupler to match it; the one built into your transceiver might not do it, unless you are lucky. Happy to send you photos. With a little more weatherproofing, it will make a fine dual-band base station antenna of moderate gain (2. I've built the $4 dual band yagi for working the satellites and local nets. This link is listed in our web site directory since Wednesday Dec 19 2018, and till today "Dish antenna for 2 meters band" has been. The resource is currently listed in dxzone. 7601 Service Pack 1. [email protected] 225 and it is a. The diversity of subjects appeals to all levels of experience and spans such topics as amateur robotics, circuit design, lasers, computer control, home automation, data acquisition, new technology, DIY projects, electronic theory, analog, and myriad microcontrollers. An automatically tuned 7-30MHz mobile antenna by dxzone. We were lucky in that the lodge has big, screened windows. First of all, the range known as VHF covers a lot of frequencies, from about 30MHz to about 300 MHz. the 2 meterantennais10mhzwideat2:1SWRpointsmeter antenna is 10mhz wide at 2:1 SWR points. A Weather Vane Antenna for 2 Meters by W6NBC & WD6ACJ VHF incognito! Here’s a 2 meter antenna your neighbors won’t recognize. I built this antenna this past week and was able to get swr down to 1. Alexa - W6nbc Competitive Analysis, Marketing Mix and Traffic. * Experiences of rain gutter antenna with SG230 antenna coupler (commercial link) * K5IJB rain gutter antenna * N3VEM rain gutter antenna * WB3GCK downspout antenna * WMOG's results with rain gutter antennas * W6NBC on rain gutter wire loop antennas (not loading up the gutter as such) Have you used a gutter antenna? Or even worked someone with one?. Cast a ballot for your […]. Or maybe it’s time to concoct that servo-driven crossed yagi for auto-tracking the satellite…. John joins Eric, 4Z1UG, on the QSO Today Podcast to discuss this and John’s other ham radio interests from Amateur Fast Scan Television to his residential. Mar 20, 2013· Product Description. Please do not add or edit any content within this section. Second, the cavity(s) had to be easy to tune. Elk Antennas 2M/440L5 5-element log periodic product reviews by real people like you. I was able to shoot the free end of the ladder line over a branch about 20-ft/6. I researched the inverted L, with plenty of long radials these seem to work well on the low bands for DX. tt/2HbOEYh via IFTTT W6NBC Wins the April QST Cover Plaque Award Posted: 19 Apr 2018 11:23 AM PDT ARRL Thhe winning article for the April 2018 QST Cover Plaque award is “An Ultra Simple 2-Meter Antenna” by John Portune, W6NBC. Frequent QST contributor John Portune, W6NBC, offers construction details in “An Ultra-Simple 2-Meter Antenna. Antenna, Antenna, Antenna! Spend your money on GOOD antennas! I have both a Baofeng UV-5r and a Yaesu FT-60. The QST Cover Plaque Award — given to the author or authors of the most popular article in each issue — is determined by a vote of ARRL members on the QST Cover Plaque Poll web page. All HT's will likely be pretty close in performance, the ANTENNA is what you need to make the contact. and they are for one specific geographic location, not the entire country. My Loop Antenna November 20, 2013 9 Characteristics of Small Loop Antennas for HF Operation • Coupling loop ≈1/5 diameter of main loop for good impedance matching on all bands • Antenna is narrowband, operating at resonance of loop L and tuning C • Radiation resistance in series with loss res. As seen in QST articles and discussed by the ARRL (American Radio Relay League). " Check it out in the April 2018 issue. Read about it in the September 2019 issue of # QST , online now or in your print edition arriving soon. Dummies guide to aircraft antennas Radio and VHF Transceiver all refer to the aircraft communications transceiver which operates across the VHF aircraft frequency band of 118. John Portune, W6NBC, has a life dedicated to education from his early days at a British grammer school teacher to his current one day, all day, ham radio classes where hundreds of people have gotten their first licenses. Portune, W6NBC here made from a threaded table lamp tube, the lower part of the whip becomes the center conductor of a short length of rigid coax feeding the center of the antenna. This calculator enables you to test the design of an octagonal loop antenna and to answer "what if" questions until you arrive at a design that meets your needs without a lot of experience in electronics. John joins Eric, 4Z1UG, on the QSO Today Podcast to discuss this and John’s other ham radio interests from Amateur Fast Scan Television to his residential. The diversity of subjects appeals to all levels of experience and spans such topics as amateur robotics, circuit design, lasers, computer control, home automation, data acquisition, new technology, DIY projects, electronic theory, analog, and myriad microcontrollers. At Greyline Performance, this is really fun for us! We are honored to announce our speaker series. Unfortunately, the flagpole shook the ladder quite severely, and I was afraid it would damage it. We were able to easily remove the screen and snake the coax out to the antenna. I have made many contacts with ft-8 but other modes clearly show its' limitations. Again following Table 6-1, first touch up the Bp cavity(s) on both sides. This wiki was started to document Frequently Asked Questions across various forums (amsat-bb mailing list, AMSAT-NA Facebook group, #amsat on Twitter, QRZ satellite forum). I would like to get a Firestik style antenna, maybe with the added spring which seems to be recommended a lot, and would like to mount it at the rear if at all possible. During early 1988 I sat and passed the 10wpm CW examination to achieve the Full call, VK5AFO. The 9th annual Youngsters on the Air (YOTA) Summer Camp opened over the weekend with pomp, circumstance, and celebratory dancing. The winning article for the January 2019 QST Cover Plaque award is “The 2-Meter Slot-Cube Antenna” by John Portune, W6NBC. 5 m between balun and 20m trap, 5. Check out these fine designs and create your own satellite antenna. This Pin was discovered by N6VOA. But it's really an evaluation kit for the CME6005 and comes with an attached (and tuned) 60mm x 10mm loop stick antenna. Pole collapses to 45 inches with a 2. The telescopic antenna fits into a slot in the rear case half, and secures with a small screw. There are three ways to tune the antenna: (1) shunt a little L or C across the feedpoint, a short hair pin or cap of circa 10 pf. It is therefore unremarkable that KRPI’s transmission facilities might induce R. In lieu of "radials," stuff like a galvanized garbage can lid, or almost anything magnetic and large enough usually works pretty well but such things may not be terrible portable. Dual Band Tape Measure Antenna for SO-50 Ive now received the tape measures, ordered from Amazon (these here - 7. 5 m between 20 m trap and 40 m trap and 11 m between the 40 m trap and the end of the antenna. John can be reached at W6NBC. (NMHA - Normal Mode Helical Antenna). They have an number of loop tuners from $160 to $260. Great because the pipe is part of the antenna and also serves as a mount. This one, by AA2TX, describes an antenna he calls a parasitic Lindenblad (here’s a link to an AMSAT article). So, show me how you have your mobile radios mounted in your 4th gen 4Runner. All HT's will likely be pretty close in performance, the ANTENNA is what you need to make the contact. Electric Sleeve Dipoles are used for gain reference, efficiency reference for low gain antennas and chamber reflectivity evaluation (directivity, cross polarization, radiation pattern). Electrically short dipole antenna for the 40m band, DG0SA: Full 1/4 wave vertical for 40m, ON7AMI: High Performance 40 Meters Vertical, W6NBC: Indoor antennas for 40mt, EA5XQ: L'antenne W3HH - T2FD, ON5MJ: Kapazitive Antennen 7mhz and 3,5, DL7JV: Multi Band cage Dipole Antenna Project, N3UJJ: Prototipo di antenna per i 7MHz in 22cm, IW0BZD. 2 Meter Amateur Radio J-Pole Antenna | KB9VBR J-Pole Antennas. Antenna Makes a gain, ground plane antenna when used with Larsen Models. com uses a Commercial suffix and it's server(s) are located in N/A with the IP number 198. com IC706-FT817 portable whip antenna by dxzone. I wish Mike all the best you made the net a success and ran the best VHF/UHF voice net I ever was involved with. What marketing strategies does W6nbc use? Get traffic statistics, SEO keyword opportunities, audience insights, and competitive analytics for W6nbc. Here you'll only need a thru-line wattmeter, a couple of dummy loads suitable for the frequency, and an ordinary synthesized HT or mobile transceiver on the band. Photos by the author. (NMHA - Normal Mode Helical Antenna). This makes it well-suited to amateur satellite applications. Second, the cavity(s) had to be easy to tune. Also see w6nbc. 225 and it is a.