ham radio antenna design

2 / 440 VERTICAL Special Announcement! It was a pile-up buster. Convert that old CB Antenna Scanner-Only Dealer! Your input is needed to help us compile a list of routers that DO OR DO NOT cause RFI to ham radio. In EZ-NEC (pro), careful attention was paid to setting up both the ground conditions (Real- High Accuracy) as well as the reference antenna (2.15 dBi) which enables dBd (decibels relative to a free-space (isotropic) dipole. The wires go in the outer hole, around the back, and out the next one. I have tried it both ways and doesn’t seem to make a difference… will do further modeling of it, though. Digital Modes Software! by G3JAM, UK Design or build your antenna here! Keep your crypto off the exchanges. All three options are fairly close in performance. Significant energy is “wasted” going “straight up.”   The effect (top hat pattern) is more or less pronounced depending on elevation above ground. Shortwave Listening What my crude drawing shows (Blue arrows) is that energy has been taken from the vertical lobe and has been redirected down to the more useful (for long distances) 20-degree take-off angle. ERP CHART THE MAYPOLE ANTENNA. This gives a low impedance feed impedance and this matches nicely to 50 Ω feeder. 6 Meter Antennas Mixed types The radio was built as four units, Antenna Tuner, Detector/Amplifier and two Wave Traps. This category only includes cookies that ensures basic functionalities and security features of the website. 2 METER SLING SHOT RE-VISITED WE REVIEW IT! (K7TUCWith a Twist by K7TUC) This is because on 40 meters, the antenna impedance is around 273 ohms. They go immediately to holes about 5/8ths inch apart. It slowly circled and watched then drifted off, looking for whatever it was looking for in the middle of town. AE5JU HOMEBREW BUDDIEPOLE ALL BAND DOUBLET By WB3AYW - Build it for 2 or 440 band! HUSTLER 4BTV 12/17 METER MOD Email to N4UJW AT hamuniverse.com It was built and put on the air during the CQ Worldwide contest last week. 2 METER HT GROUND PLANE-W6JMF A JOYSTICK ANTENNA EXPERIMENT Such devices usually operate on the frequency bands of VHF, UHF and occasionally HF. (High Gain Vertical Antenna with Calculator). HAM BOOKS BY AC6V FM101x - New To Repeaters? 1. The 2 Meter 4 Element Hentenna Beam by N5NSS KL7JR DUAL BAND VERTICAL HF WIRE, 40 THRU 10 WIRE VERTICAL A spectator stopped by, a bald eagle! Click the Donate button on his website under the videos. A new "e-book" pdf Release by N4UJW and KL7JR. Oh…and Dummy loads for people in W-6 and W-2  land. (Tips on building better Quads) (37mb pdf file) HUSTLER 5BTV ON 17 METERS Submit a Project/Article! LIMITED SPACE 160/80 METER And when these basic signal contacts were done, had a nice +30dB over S-9 on C.W. END FED 80 > 15 METER QRP ANTENNA We especially need these types:  Including Multiband, Curtains and Quads, HF Verticals and multiband 2 METER FLOWER POTby KF9F On the other hand, as a high-performance (and good gain) antenna on the 20-meter band, the antenna is hard to beat. Feed the birds some RF! BY VE3HKY (Also includes video) But, here’s another “crackpot theory” for you: On most antenna insulators, people twist wires “back on themselves.”  I know “the books” say this doesn’t matter, but instead of “back on themselves” I chose to set up a “belt” approach for all wires. Quarter Wavelength Vertical Antenna 7 9. When you refer to the “cold” wire, are you referring to the braided shielding wire of the coax? SLIM JIM BY 9W2WTF, 2 METER SLIM JIM - KD0QMY 2 ELEMENT QUAD 10/11 METER One issue that it presents is that it does NOT like sunlight. A tuner may (or may not) find a solution when a ground is being loaded. I installed a 2’x4′ piece of pegboard on the inside sliding door for hanging larger tools that don’t fit well on the small shelves and drawers above the bench. (HF experimental multiband vertical) When it comes to getting the most enjoyment out of Amateur Radio, there is nothing more important than your antenna system. Repeater Builders Info Now, let’s take the exact same antenna elevation and tweak. 6 METER 6 EL SSB YAGI HOW TO USE AN Make sure Printer Claus lands on your tower before the next lock down and brings? With a simplest dipole (like for 20 meters), you have two pieces of wire, each ~16.7 feet long. (Direct Feed!) VERTICAL DIPOLE ANTENNA MOUNT (Experimental) ANTENNA WIRE SIZES Dipole Antenna - Balun 9 13. But not get better than 3 1/2 to  on 40 without “help” which is why the ladder line tuner. The first version I put up employed a commercial ladder line center insulator. ARRL TECHNICAL INFO SERVICE Noticeably broader bandwidth response below a 2:1 SWR than a Yagi. Will have to send you better pix when I get it all fully populated. Windom Antenna - Feed with coax cable 7 8. 2. This means that a 40 metre dipole can … New! George, a picture of a section of the completed ladder line would help in visualizing that project. (Experimental), 20 METER WONDER BAR The Gratitude Campaign  Including Multiband and mobile, 2. ANOTHER 6 METER LOOP  CLOUD WARMER NVIS BEAM Loaded with info for ANTENNA PROJECTS Remember when bitcoin was $20,000 & some car dealers were stumbling over themselves selling cars & trucks using bitcoin as a currency. 20 METER CIRCULAR MAGNETIC LOOP QUICK JUMP TO ANTENNA PROJECTS See more ideas about antenna, ham radio antenna, ham radio. SIMPLE 40-10 METER VERTICAL USING PVC Resources listed under Yagi Antennas category belongs to Antennas main collection, and get reviewed and rated by amateur radio operators. Now if the big box hardware store would just get my drill press back in stock so I could finish drilling them! A striking animal spirit saying (to me) this is freedom, this is America, hold faith. The Dual-Brand Mobile Antenna has a three-inch ‘Strong Rare Earth’ magnet base, which lets you easily mount it on your car for stability. HD Video Instructions by Bob Rice, VE3HKY- Aprox 1 hr long 6 METER 5/8 WAVE VERTICAL NEWTHE N6JSX J POLE ANTENNA STAND You can’t beat them numbers with a stick! NA4L LAZY H ARRAY Are the longer wires HORIZONTAL to the “hot” wire, or VERTICAL to the “hot” wire? (A limited space helical vertical) 2 METER ALUMINUM SLIM JIM (1/4 wave Vertical-multiband) Wired Communications - Fantastic connector source Please feel free to donate to help support this website.&ampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampamp;ampampamp;ampampampamp;lt;br&ampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampamp;ampampamp;ampampampamp;gt; Your kind and generous support helps those who can not help.&ampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampamp ampampampamp;ampampamp;ampampampamp;lt;br&ampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampamp;ampampamp;ampampampamp;gt;&ampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampamp;ampampamp;ampampampamp;lt;/font&ampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampamp;ampampamp;ampampampamp;gt;&ampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampa mpampampampampampamp;ampampamp;ampampampamp;lt;/font&ampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampamp;ampampamp;ampampampamp;gt;&ampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampamp;ampampamp;ampampamplt;/font&ampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampa mpampampampampampampampampampampampampamp;ampampamp;ampampampgt;&ampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampamp;ampam pamp;ampamplt/font&ampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampamp;ampampamp;ampampgt</font></font></font></b></font></font></font></font> Say Thank You To Our Service Men and Women! 10 METER "SUPER SCANNER", HF MULTIBAND VERTICAL refer to the wire table included in the article 49 feet hot side, 90 feet cold side (tied at center feed point, 3″ apart at ends) All in a row, however gain is also evident in inverted vee installation, I just didn’t “apex angle” because that would be too big a table and would constitute something verging on ‘werk’ 73. Thus, it makes sense to look for budget-friendly options like the wire dipole. NEW LIMITED SPACE 160 THRU 70CM ANTENNA MARVEL PROJECT! THE N4UJW ANTENNA PROJECTS DESIGN LAB. UPDATED! It can be machined, cut with a table saw or milling machine etc. MULTIBAND HF DIPOLE HF LONG WIRE BALUN  New! New!WHAT IS THE DISTANCE TO THE HORIZON If you are new to building, check out other sites for construction details. TRIBAND Put your junk antenna parts to use. BY WB8ERJ (OFF SITE) J Poles, Satellite, Bicycle, Phasing Harnes and more – PTSD if diagnosed “properly” will score U a Sticky-Budz License/Card –, -“Killing em slowly – longer it takes, moar money we makes..” -“mr globalist”. by Bryce Salmi - KB1LQC Product Reviews  (To non hams:  it kicked-ass!). burns on my radio…” Invariably, insufficient grounding is THE reason. ANOTHER 6 M J POLE DESIGN db GAIN VS LOSS - POWER TRADEOFFS 80 ~ 6 METERS      4. You can't work them if you can't hear them! <font color= "#0000FF">&ampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampamp;ampampamp;ampampltfont color=&ampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampamp;ampampamp;ampampquot#0000FF&ampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampamp;ampampamp;ampampquot&ampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampamp;ampampamp;ampampgt&ampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampamp;ampampamp;ampampamplt;font 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ont&ampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampampamp;ampamp amp;ampampgt</font> Loops, Slopers, Yagis + More WB3AYW 2/440 high gain collinear 160-80 METER INVERTED L K50E 2M LOW ANGLE VERTICAL google_ad_width = 160; Hanging them back in the sky keeps me young. Such a simple improvement on an ocfd I would have thought someone would have already come up with it…. Al Legary - VE3SQB - admits that he is a "quad" man. HT ANTENNA MODIFICATION G5RV MULTIBAND HF ANTENNA But, have you priced that stuff? ALL BAND STURBA CURTAIN! 2 METER "ROCKET LAUNCHER" All wires tied at the center, 3-inches apart at the ends (and not connected out there). SLOPING INVERTED V (L) BY LA1IC Mixed Types (2 - 6- Meters and 440) (HF experimental multiband vertical) DESIGN A J POLE FOR ANY BAND AE5JU 75-40-20 Meter Field Day! 160 M TUNABLE COUNTERPOISE RANDOM WIRE ANTENNA LENGTHS https://www.polytechforum.com/robotics/how-to-tell-if-cutting-board-is-delrin-17510-.htm you know the old saying,,”does it pass the smell test”,,”something just doesn’t smell right” seems to apply to more than just politics. (Broadband 20 - 10 meters +) Dude, we just had the All Time High Monthly Close in Bitcoinz – October,2020! THE DIPOLE ANTENNA THE COBRA ANTENNA See more ideas about ham radio antenna, ham radio, radio antenna. MORE ANTENNA PROJECTS BELOW! (Using Wilson Mobile CB Vertical) KL7JR N6FN Nifty Accessories - Ham Rig Programming Guides SOME OF MY FAVORITE ANTENNA BOOKS . 80-40 METER DUAL LOOP 2 and 6 METER YAGI PROJECTS (Reduced size Yagis using coax velocity factor) By W6HJ FIND UNKNOWN GUY WIRE LENGTH It wants to without them. An introductory guide to using modeling software for designing and evaluating antennas. NEW 2 METER 3 ELEMENT BACKPACKER On the ends, sautéed wires are crimped into ring terminals that land on stainless bolts. MORE TO COME. Scanner Radios This website uses cookies to improve your experience while you navigate through the website. Hamuniverse is hosted by