l antennas

1415 links - and 47 categories

Antennas : 40M : 40 meter Dipole Antennas

Linear Loaded 40m Dipole - Dipole for 40m band. It is a simple linear loaded dipole feeded with 450-Ohm openwire feedline. Designed it for resonance at 7.050 MHz, can be tuned on 30m and 80m bands with an external antenna tuner. Build with simple electrical copper wire (2.5 mmq/13 awg) and two fishing poles with size of about 7 m/23 ft.
[ Hits: 162 | Votes: 0 | Rating: 0 ]

Antennas : 6M

Six Meter Antennas Reviewed - In this article the author describes his personal experience on some antennas for 50 MHz he tested on the field, the six meter Dipole, Vertical, Moxon, a 3 element Yagi and an Omniangle antenna.
[ Hits: 138 | Votes: 0 | Rating: 0 ]

Antennas : Antenna Calculators

Online Yagi Antenna Calculator - HF Beam Calculator for Amateur Radio and CB Communications
[ Hits: 562 | Votes: 16 | Rating: 5.5 ]

Antennas : Baluns

Build your own HF balun - A balun is a MUST for dipoles or similar antennas when they are feed with coaxial cable. From the RF point of view, the shield can be modeled as two conductors, the internal shield (the real shield, this is, ground) and the external shield, who is really far to be ground. In this way, your dipole has 3 arms, the two from the dipole and the coaxial cable shield (external face)
[ Hits: 248 | Votes: 1 | Rating: 10 ]
BalUn for Delta-loop & Quad-loop antennas - This Guide helps you to build the 1:2 BalUn 600 Watts DIY kit step by step. If a delta-loop or quad-loop antenna is powered with a coax cable from the transceiver it is necessary to use a 1:2 BalUn. This 1:2 BalUn uses a symmetrical 1:2 impedance transformer.
[ Hits: 286 | Votes: 1 | Rating: 9 ]

Antennas : Dipole

Multiband Dipole Antennas Compared - A comparison of multiband dipoles, including jumpered dipole versus fan dipole antennas, dipole fed by ladder line, resonant dipoles antennas. ARRL lab notes
[ Hits: 811 | Votes: 3 | Rating: 4.33 ]

Antennas : J-Pole

Improving Gain of the Super J-Pole Antenna - The collinear J-Pole, often known as the Super-J, does improve the behavior over a regular J-Pole. there is an advantage when vertically combining 1/2 radiating sections to have a bit of separation between the half-wave end points. Get 0.8 dB more gain out of the trusty Super-J by replacing the traditional phasing stub with a long coil.
[ Hits: 192 | Votes: 0 | Rating: 0 ]

Antennas : Magnetic Loop

Magnetic Loop HF antenna - An homebrew HF Magnetic loop made with 2m length of 6mm diameter copper pipe formed into a near circle as the low loss inductor, a short length of coax as a capacitor,a short length of mains cable, again as a fixed tuned capacitor, a tunable 365pF air spaced capacitor, and a small Jackson C804 airspaced variable with a small 3-35pF trimmer in parallel
[ Hits: 131 | Votes: 0 | Rating: 0 ]

Antennas : Skeleton Slot

HF Skeleton Slot Antennas - HF Skeleton Slot An antenna system with a difference.
[ Hits: 353 | Votes: 2 | Rating: 10 ]

Antennas : Theory

Improve your Antennas for Low Solar Activity - How to improve your transmitting antennas for very low solar activity periods, vertically polarized 160 meter antennas, horizontally polarized 80 to 10 meter antennas, single or stacked yagis, multi-tower stations
[ Hits: 423 | Votes: 0 | Rating: 0 ]
Understanding Antenna Polarization - What is antenna polarization, and why does it matter. Horizontal versus Vertical versus Circular polarization. Undestanding how antennas perform better with different polarizations.
[ Hits: 169 | Votes: 1 | Rating: 2 ]

Antennas : Tuners

Z-Match 100 and mini Z-Match - This is a antenna tuner with wide range tuning for antennas with a Z of + 50 Ohms on all the HF bands.
[ Hits: 298 | Votes: 0 | Rating: 0 ]

Ham Census - What do amateur radio operators worldwide, think of their passion? What do we wish for? What are we frustrated about? How many of us are active, versus those that are taking a break? Do we have favorite radios, antennas, or even favorite cw paddles? Do we prefer one contest over another? The best way to find out is if we all participate in Ham Census. Join in and let all amateur radio operators know your thoughts "share your views" then you can find out what everyone else is thinking, in real time. Help shape the future of ham radio by participating in the world's most complete survey of amateur radio.
[ Hits: 106 | Votes: 2 | Rating: 8 ]

DX Commander Antennas - DX Commander produces economical multi-band antennas available in kit form. 4 Square array vertical antennas, vertical multiband antennas, sota and travel antennas
[ Hits: 274 | Votes: 0 | Rating: 0 ]

OM0ET Antennas - Maker of small and compact multiband QRP UltraLight Magnetic Loop Antennas and UnUn transformer for end-fed multiband antennas
[ Hits: 312 | Votes: 7 | Rating: 7.57 ]

Free eBook - Capture the MAGIC of Six Meters - This book provides plenty of insight into how you, too, can Capture the Magic of Six Meters. It covers propagation, equipment, software, antennas, awards and contesting, as well as assistance in finding the magic.
[ Hits: 312 | Votes: 0 | Rating: 0 ]

Hy-Gain TH3jr Beam Manual online - Hy-Gain TH3jr Tri-band HF 3 Element Beam Covers 10, 15 and 20 Meters assembly instruction manual
[ Hits: 180 | Votes: 2 | Rating: 5 ]

Ham Goodies - Amateur Radio goodies for not only the Shack, but also a range of outdoor/portable kit. Ferrite toroids, RTL SDR, Un-uns and Baluns for antennas and RF Filters. Based in the UK.
[ Hits: 145 | Votes: 0 | Rating: 0 ]

3D Ham Radio Antenna models Thingiverse - Ham Radio 3D Models published on Thingiverse, includes several parts for homebrewing amateur radio antennas, like spreaders, isolators a and mounts, wire antenna winders, adapters and many other accessories useful to antenna homebrewers.
[ Hits: 346 | Votes: 1 | Rating: 10 ]

RTL SDR with Active Antennas for HF - Experiences with software defined radios SDR and active antennas using the RTL SDR dongle and Spyverter HF up-converter
[ Hits: 181 | Votes: 2 | Rating: 10 ]