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Antennas
- Maria Maluca Antenna
- This small beam fed with VHF ribbon line consists of a dipole and a director adjusted for the desired band by dl8ncr
[Hits: 1389 | Votes: 3 | Rate: 5.67] - Antenne Maria Maluca
- An antenna originally planned in the sixties, a two element beam antenna tunable on several band, in french
[Hits: 1127 | Votes: 2 | Rate: 4.50] Antennas : 10M Antennas : 2M
- 7db gain antenna for 2 meters band
- This article describes building a 2-meter beam antenna with 7db gain for $7.00. Made of PVC and welding rod. Originally dated April 1993 by WB0CMT.
[Hits: 2311 | Votes: 4 | Rate: 8.25] Antennas : 40M
- Multi-Band Super Mini Loop Antenna
- How to make the Super antenna.
To build this antenna you need a lot that is at least 100 feet across.
Antenna covers all bands 80-10 meters + 30, 17, 12 meter WARC Bands
This antenna works as a Full Wave Loop on 80 Meters and also works as a 2 wavelength open loop or Bi-Square on the 40 Meter band
[Hits: 13472 | Votes: 0 | Rate: 0.00] Antennas : 70cm
- Portable 70cm Quadruple Quad Beam
- A suitable high gain 70cms antenna for SOTA operation was sought that did not have the drawbacks of a long Yagi antenna, principally a narrow beamwidth and bandwidth.
[Hits: 2354 | Votes: 2 | Rate: 10.00] Antennas : 80M
- Restricted space 80 meter antenna
- This article describe a small single wire antenna running on the side of the building allow operations on 80 meters band
[Hits: 2680 | Votes: 1 | Rate: 6.00] Antennas : Dipole
- Inverted V
- Described is a simple inverted-V antenna which, when used with a balanced ATU, can be used on all the main Radio Amateur HF bands (80, 40, 20, 15 and 10m). The cental support is made in such a way that the wire can be coiled up for storage when the antenna is taken down.
[Hits: 2736 | Votes: 1 | Rate: 8.00] Antennas : Feed Lines : Open Wire
- Open Wire Feed Line a second look
- Put up the longest dipole you can fit, feed it with open wire line, connect it to the balanced output of your tuner and—poof! Instant multiband antenna. Is life really that simple? By Paul Danzer, N1II
[Hits: 1464 | Votes: 3 | Rate: 4.00] Antennas : Magnetic Loop
- The Thick Loop
- The performance of a small magnetic loop can be improved constructing it larger, thicker or both.
The antenna is covering from 12 Megahertz to 32 megahertz and adding a 156 Pico farads ceramic capacitor it resonates on the 40 meters band.
by PY1AHD
[Hits: 704 | Votes: 0 | Rate: 0.00] Antennas : Multiband
- Building the G3TXQ Hex Beam
- This site provides guidelines to build a G3TXQ broad band hex beam R.F. antenna for the five amateur radio bands, 20, 17, 15, 12 and 10
meters. The G3TXQ broad band hex beam is a new development and actually easier to build than the classic hexbeam by K4KIO
[Hits: 3603 | Votes: 6 | Rate: 8.17] Antennas : Theory
- About broadband
- What you gain and what you lose.
While broadband and electrically small antennas may look attractive on the surface, they are by necessity compromises and usually don’t work as well as tuned antennas.
[Hits: 385 | Votes: 0 | Rate: 0.00] Antennas : W3DZZ
- W3DZZ multiband dipole
- The multi-band trapped dipole is resonant on approx 3.7, 7, 14, 24 7 28.5 Mhz. The overall top length needs to be approximately 32.9 Meters
[Hits: 6070 | Votes: 4 | Rate: 2.50] DX Resources : Beacons
- VHF UHF European Beacons
- MMMonVHF maintains the data for 6m, 2m, 70cm and 23cm bands in collaboration to LA0BY. This site allow display of a beacon map and latest beacon spots.
[Hits: 1619 | Votes: 8 | Rate: 6.38] DX Resources : Clusters Ham Radio : Band Plans Operating Aids : Grid Squares
- WorkedGrids
- WorkedGrids is a Windows application that displays a map showing the amateur radio grid squares contacted and logged in using a third-party logging program. WorkedGrids uses colors to display information on a per-band basis. Up to four bands can be displayed concurrently
by VE2ZAZ Bert
The software is directed towards the VHF and above operators who collect grid squares for contesting or award purpose. It is designed to supplement a logging program and it replaces the pen and paper technique.
For its input, the program reads the plain-text (ASCII) log files generated by most logging programs. The file is read at a set interval and the worked grid squares on the map are updated in a dynamic way as the contest progresses and the log file is periodically saved.
A world map is implemented so any area of the world can be shown. The maximum map window size is 960 x 800 pixels.This provides a fixed-resolution continental viewpoint typical of a VHF grid square chase.
[Hits: 892 | Votes: 0 | Rate: 0.00] Operating Modes : Hellschreiber Radio Equipment : HF Transceivers : Yaesu FT-817
- WideBand for Yaesu 817 857 897
pop
- This software will allow you to extended TX for the Yaesu FT 857 FT 817 FT 897 and reset back to standard factory defaults.
[Hits: 27789 | Votes: 14 | Rate: 6.55] Software : Beacon Monitoring
- BeSpeak
- BeSpeak is a real time HF beacon announcer. You select a band and the screen shows location, callsign and status of the beacon transmitting at that time.
[Hits: 530 | Votes: 0 | Rate: 0.00] Technical Reference : Amplifiers : HF Amplifiers Technical Reference : Duplexers
- Diplexer 2m 70cm
- This DIPLEXER separates 2m from 70cm on the same coax cable, and allows to use 2 antennas over the same cable and permits transmission on one band
and simultaneous receiption on the other band by hb9abx
[Hits: 2461 | Votes: 2 | Rate: 2.00] Technical Reference : Spectrum Analyzers
- 2.4GHz Spectrum Analyser
- This is a simple project that allows you to monitor the 2.4GHZ band in your immediate vicinity.
[Hits: 1179 | Votes: 0 | Rate: 0.00]
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