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Antennas : 2M- 2m Big Wheel Antenna
- A Useful Horizontally Polarised Omni-directional Antenna with Gain for 144 MHz
[ Hits: 1320 | Votes: 4 | Rating: 7.75 ]
- A Portable Quad for 2 Meters
- Backpacking, boating or mountaintopping ? Invest your time and pack this novel directional gain antenna on your next expedition
[ Hits: 1572 | Votes: 7 | Rating: 6.86 ]
- Tape Measure 2M Beam
- A Tape Measure Beam Antenna for Radio Direction Finding based on WB2HOL design.
[ Hits: 570 | Votes: 0 | Rating: 0 ]
- Six Meter Quad Turnstile Antenna
- Simple 6 Metre DX Antenna based on an article by LB Cebick in QST May 2002 on a Quad Turnstile antenna. This antenna is basically two full wave loops mounted at right angles fed 90 degrees out of phase to produce an omni-directional horizontally polarized pattern
[ Hits: 701 | Votes: 2 | Rating: 9.5 ]
- How to make a HB9CV
- The HB9CV is a well known two element antenna of a directional beam type with a forward gain of 4 to 5 dBd. This one is for two metres but it can be scaled, from the dimensions in the diagram, for other bands I have also made them for four and six metres
[ Hits: 1462 | Votes: 9 | Rating: 4.45 ]
- 2m Halo Antenna
- Construction and analysis of a low cost omnidirectional horizontally polarized antenna for 144 MHz, including notes on halo antenna stacking
[ Hits: 1011 | Votes: 9 | Rating: 5.34 ]
- Mixed Mode Helical Antenna
- An experimental omni-directional antenna for 70cm which has both horizontal and vertical gain
[ Hits: 1004 | Votes: 3 | Rating: 8 ]
- Build your own Hexagonal Beam
- A web site dedicated to hex beam homebrewing. The hexagonal beam has become a wildly popular antenna. It is a directional antenna that provides great performance and does not require a full scale, expensive tower.
[ Hits: 1173 | Votes: 2 | Rating: 6.5 ]
- Home made High Power Magnetic Loop Antennas
- Magnetic Loop Antennas for The Radio Operator with Limited Space, a two part series of articles on how to construct a magnetic loop antenna, including directions on selecting high voltage tuning capacitor
[ Hits: 895 | Votes: 0 | Rating: 0 ]
- 2m Band Moxon
- Moxon is a rectangle shaped directional antenna, originally designed by Les Moxon G6XN. There are couple of advantages of using this antenna. It is small in size, Easy to mast, Balanced to 50 Ohms, Near 1:1 SWR, Excellent Front to Back (F/B) ratio, Large bandwidth
[ Hits: 581 | Votes: 1 | Rating: 6 ]
- Curtain Antenna
- An antenna for shortwave radio broadcasting consisting of rows and columns of dipoles, is a high gain directional antenna, designed for medium and long range communications.
[ Hits: 854 | Votes: 0 | Rating: 0 ]
- Antenna Basics : Directional Antennas
- An article describing basic concepts of antenna radiation, and in particular directional antennas like Yagi antennas or Quad antennas and how they determine the direction or signals.
[ Hits: 346 | Votes: 1 | Rating: 2 ]
- WiFi Spider Antenna
- Quarter wave omni-directional spider antenna for 2.4GHz 802.11b
[ Hits: 1009 | Votes: 8 | Rating: 7.5 ]
- K8UR Phased Array Switchbox
- A Phased Array Switchbox by ComTek founder K8UR, switch your 4-Square in 8 directions and control it remotely over the internet
[ Hits: 317 | Votes: 2 | Rating: 5.5 ]
- Manpack Communications
- A complete bi-directional APRS messaging station, made up of a Byonics TT4 with the companion display, Byonics GPS5 receiver, compact keyboard, Baofeng UV-3R+ with a telescopic whip antenna by VE6AB
[ Hits: 620 | Votes: 2 | Rating: 5.5 ]
- Peilsport.de
- ARDF Peilgruppe Neanderal Germany - Radio Direction Finding Event
[ Hits: 152 | Votes: 0 | Rating: 0 ]
- JaRec - Java Radio Remote Control Software
- JaRec is a multi-platform Java application which can be used to control your own CAT enabled transceiver (with support for audio) using a Serial/USB Serial/Bluetooth or network connection. jAReC can act as both a server and as a client. The PocketRxTx Android application can be used as a client securely to connect over the network and control (CAT) your radio transceiver remotely via jAReC server over the Internet or local LAN, with bi-directional audio support.
[ Hits: 1723 | Votes: 12 | Rating: 7.31 ]
- Arduino SWR and Power Meter
- The circuit is based on two AD8307 log amplifiers, which are connected to the forward and reflected ports on a directional coupler
[ Hits: 1577 | Votes: 3 | Rating: 6.67 ]
- Raspberry Pi Weather Station
- A complete DIY Raspberry Pi Weather Station including software, capable to read wind speed, wind direction, rain gauge and with a temperature and humidity sensor along to a camera.
[ Hits: 1373 | Votes: 5 | Rating: 4.6 ]
- A Modern Directional Power/SWR Meter
- Every ham needs an RF power meter. Here is a high performance unit to build at home.
[ Hits: 1557 | Votes: 2 | Rating: 5.5 ]
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