# coax length

## coax length

• Vertical antenna for 20-15-10 m  pop - This is a vertical multiband antenna made up of several aerial elements lambda/4 length, feeded with just a coaxial cable in French.
[ Hits: 20640 | Votes: 15 | Rating: 5.54 ]
• Bazooka dipole for 70 cm band - Here is a very simple 70cms dipole from Harald PD2HFE, which uses a single piece of RG-213 coaxial cable 34 cms in length.
[ Hits: 13719 | Votes: 22 | Rating: 7.24 ]
• Coaxial cable dipole for 80m - Here are some simple antennas you can build along with calculators to help you get the right length.
[ Hits: 2816 | Votes: 1 | Rating: 5.00 ]
• A 1:1 Coaxial Balun  pop - PDF article about a coaxial 1:1 balun, original concept by I4BBE using a quarter-wavelength and the three-quarter-wave adapting sections with the 50-Ohm coaxial cable by I0QM
[ Hits: 43056 | Votes: 20 | Rating: 7.68 ]
• A Cost Effective Current-mode 1:1 Balun - A cost effective current-mode 1:1 balun can be constructed from a length of coax and a rod typically used for a broadcast antenna loop-stick, some electrical tape, cable ties, a length of PVC water-pipe and some connectors.
[ Hits: 8055 | Votes: 1 | Rating: 10.00 ]
• The Guanella 1:4 balun - A cost effective current-mode 1:4 balun can be constructed from two lengths of coax, two ferrite rods, some electrical tape, cable ties, a length of PVC water-pipe and some connectors. This form of 1:4 current-mode balun is named after G. Guanella.
[ Hits: 3433 | Votes: 1 | Rating: 10.00 ]
• Coax Dipole Calculator - An efficient program to calculate dimensions of coax dipoles, or bazooka antennas considering velocity length of different coax cables. Express dimensions in feet/inch and meters/cm. Freeware by VE3SQB
[ Hits: 10474 | Votes: 47 | Rating: 5.23 ]
• Choke coax length - Discussion about choke length
[ Hits: 2290 | Votes: 2 | Rating: 5.50 ]
• Coaxial antennas - G3TXQ study on coaxial cable demonstrate that it can reduce an element's length by something approaching the Velocity Factor of the cable
[ Hits: 1137 | Votes: 1 | Rating: 10.00 ]
• Full Wave Loop Dimensions - This article contains the measurements for building a full wave loop using wire and length of 1/4 Wave Coax Matching Transformer
[ Hits: 725 | Votes: 2 | Rating: 5.50 ]
• Simple Coax Mag Loop Antenna - A homemade Magnetic Loop antenna from a spare 3m length of RG213 working from 30m to 15m with a 130pF tuning capacitor
[ Hits: 1926 | Votes: 4 | Rating: 6.50 ]
• Archimedean Spiral Antenna for RTLSDR  updated - Dodgy plans to make Archimedean spiral antenna for RTLSDR software defined radio receiver. Made of two equal lengths of coaxial cable seems to be the easiest circularly polarized antenna to make that will cover a broad range of the rtlsdr dongles E4000 tuners
[ Hits: 428 | Votes: 1 | Rating: 10.00 ]
• Quarter Waves and Velocity Factor - Coax Velocity Factor in Baluns, Does it Matter? Test results show coaxial cable velocity factor does not always enter into stub length calculations especially in the world of Baluns
[ Hits: 112 | Votes: 0 | Rating: 0.00 ]
• Matching with one-twelfth-wavelength feed line  updated - Matching with a half wave or wuarter wave coaxial cable is pretty well known, but an existing 1961 system to do that with two one-twelfth-wavelength transmission lines.
[ Hits: 398 | Votes: 1 | Rating: 10.00 ]
• CoaxTrap - This program let you design of antenna trap using length of coaxial line wound as solenoid on a coil former.
[ Hits: 5149 | Votes: 9 | Rating: 3.78 ]
• Bootstrap coax traps for antennas - Analysis of an antenna trap where a coil is formed of a length of coax cable, the outer conductor of one coax end is tied to the inner conductor of the other coax end, and the remaining connections form the terminals for the trap.
[ Hits: 1163 | Votes: 2 | Rating: 9.00 ]
• Windom Antenna with 4:1 balun - The Windom is an Off-center wire multiband Antenna. The old version was fed just by a single-wire connected on 1/3 of antenna's overall length or with an open-line feeder (later versions). Here is another model with coaxial feeder, which is compatible with Solid States - 50 Ohm output transceivers .
[ Hits: 7426 | Votes: 5 | Rating: 6.80 ]
• Coaxial Cable & Power Handling - This calculator can be used to estimate the attenuation (dB loss), power handling capability, and transmission efficiency for some of the more popular Wireless Communications and MIL Spec cables at the frequency of interest
[ Hits: 1015 | Votes: 8 | Rating: 8.17 ]
• Measure Impedence of Coax Cables  updated - This video shows one way to use a scope and function generator to measure the length of a piece of coax transmission line as well as estimate its impedance
[ Hits: 546 | Votes: 3 | Rating: 6.67 ]
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