online

619 links - and 7 categories

Coil-Shortened Vertical Antenna Calculator - You can shorten a vertical antenna by using a loading coil. This online calculator tells you how the amout of inductance your loading coil will need to have.
[ Hits: 313 | Votes: 2 | Rating: 5.5 ]
Corned Fed Delta Loop - Author found a ratio between the lengths of the sides of the Delta Loop that give reasonably low SWR into a 50 ohm coaxial cable almost independent of the high above ground and other surroundings. This ratio also gives good results no matter orientation. Includes an online delta loop antenna calculator.
[ Hits: 168 | Votes: 0 | Rating: 0 ]

Log Periodic Dipole Array Calculator - Description and online calculator for Log Periodic Dipole Arrays LPDA are directional antennas featuring a relatively constant characteristics across a wide frequency range.
[ Hits: 226 | Votes: 2 | Rating: 6 ]

Cantenna Calculator - Aka Circular Waveguide Antenna. This online antenna calculator let you plan your cantenna for the desired frequency of operation, giving the Can diameter you have available.
[ Hits: 378 | Votes: 5 | Rating: 4 ]

IARU Beacon Map Live - This online map shows the IARU beacons. If the clock on your PC is accurate enough, it will also show which ones are broadcasting at the moment and on which band.
[ Hits: 314 | Votes: 3 | Rating: 6.67 ]

HD8R Log Online - On-line Log for HD8R Galapagos 2021 DX pedition
[ Hits: 1178 | Votes: 8 | Rating: 6.75 ]
7P8RU Log Online - Online log for 7P8RU Lesotho DX Pedition 2021
[ Hits: 69 | Votes: 3 | Rating: 9.67 ]
3D2USU Online Log - Fiji Island DX Pedition Online log
[ Hits: 74 | Votes: 1 | Rating: 1 ]
TX5N Log Online - Online Log for TX5N DX Pedition to Austral Islands 2022
[ Hits: 273 | Votes: 4 | Rating: 7 ]
VU4W log online - VU4W online log for Andaman Islands DX pedition 2022
[ Hits: 71 | Votes: 0 | Rating: 0 ]
3D2RRR Log Online - Online log for 3D2RRR dx pedition to Rotuma
[ Hits: 53 | Votes: 0 | Rating: 0 ]

IK6BAK QSL Archive - Online QSL archive counting 13400 QSL scanned and indexed online with a searchable database
[ Hits: 88 | Votes: 0 | Rating: 0 ]

World of Receivers and Transmitters - A searchable database of online websdr receivers, lists OpenWebRX, KiWi SDR and WebSDR from all over the world, providing a web interface to search and filter links to websdr
[ Hits: 307 | Votes: 3 | Rating: 4 ]

WebSDR in Andorra - Listen to online WebSDR located in Andorra Europe. Four receivers on 60m, 20m, 40m, and 80m, connected to a dipole antenna direction East/West
[ Hits: 131 | Votes: 1 | Rating: 5 ]
UR5VIB Online SDR - Online web SDR from central part of Ukraine powered by OpenWebRX KiwiSDR at UR5VIB
[ Hits: 371 | Votes: 3 | Rating: 7.33 ]
SR4DON Web Radio Receiver - OpenWebRX online radio receiver from Olsztyn Poland 10-15 meters bands, 50 MHz VHF UHF bands.
[ Hits: 188 | Votes: 1 | Rating: 10 ]
DK0TE KiwiSDR Germany - Online internet HF LW MF web receiver based in Baden-Wuerttemberg cooperative state university Ravensburg Campus Friedrichshafen running a T2FD antennan under roof.
[ Hits: 267 | Votes: 2 | Rating: 10 ]
Northern Utah WebSDR USA - This online WebSDR is located near Corinne, Utah, has coverage on all U.S. amateur HF, MF and LF bands, 2 meters, the bottom 1 MHz of 6 meters, and several shortwave broadcast bands.
[ Hits: 514 | Votes: 3 | Rating: 10 ]

WA3RNC QRP Kit Online Store - Manufacturer of the TR-35 4-Band 5-Watt CW Transceiver Kit
[ Hits: 203 | Votes: 1 | Rating: 10 ]

OnLine Morse Tutor by NoseyNick - An online version of a fully automatic morse code teaching machine. This morse machine permit to select several different options including speed, volume, tone and set of characters. This version works works with any HTML5 browser.
[ Hits: 149 | Votes: 1 | Rating: 10 ]