2 and 6 meter
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Antennas : 15M- Monster Quads
- N6LF tells us about his monster two-element 40-meter quad, with bonus three elements on 20 and 15
meters.
[ Hits: 6373 | Votes: 0 | Rating: 0 ]
- 80/160 Dual band vertical
- This 80/160 meter antenna is constructed from six 12 foot aluminum tubes to form a slip-up mast antenna some 60 feet high by K0RWU
[ Hits: 5855 | Votes: 0 | Rating: 0 ]
- 40-meter Rectangular Loop Antenna
- A 40-meter antenna that provides good local and regional coverage during the day and good DX capability at night
[ Hits: 2245 | Votes: 2 | Rating: 3.5 ]
- Vertical Moxon for 40 meters
- A vertical half-moxon for the 7 Mhz by F6IRF
[ Hits: 2826 | Votes: 1 | Rating: 7 ]
- CobWeb multiband folded dipole
- The cobweb antenna it is basically a 5 band antenna comprising of 5 full half wave dipoles for each band - between 10 meters and 20 meters, the antenna is also resonant on 6M and can be modeled even for VHF frequencies.
[ Hits: 8620 | Votes: 0 | Rating: 0 ]
- K0RWU Multiband dipole 6-17 meters
- This antenna consists of 4 resonate dipoles made from 12 insulated copper electrical wire. The dipoles are resonate on the following bands: 6 meters, 10 meters, 12 meters and 17 meters.
[ Hits: 2207 | Votes: 1 | Rating: 10 ]
- N6TWW 2 meter Halo
- 2 Meter Halo Antenna project by Mike Fedler with many detailed pictues and detailes homebrewing instructions so you can build your own
[ Hits: 3508 | Votes: 12 | Rating: 6.42 ]
- A Tree Friendly 2 Meter Halo Antenna by KR1ST
- Article on a 2 and 6 meters halo antennas that does not require a mast has a very low part count and can easily be built with a minimum of tools.
[ Hits: 1530 | Votes: 2 | Rating: 4.5 ]
- 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: 1040 | Votes: 0 | Rating: 0 ]
- Large multiband moxon antenna
- This very large moxon antenna resonate on 80 40 and 10 meters, has been used for CQWW 2006 by a YU team project
[ Hits: 4361 | Votes: 3 | Rating: 9.33 ]
- Vertical antenna for Vacation
- Vertical Vacation Antenna for 80, 40 and 20 Meter-Band, by Herbert OE3BMB
This antenna is a full size λ/4 for 20m and 40m band, and a shortened λ/4 for the 80m band.
Generally on the 40m band the SWR is under 1,6. In 80m and 20m band at the resonant frequency the SWR is about 1,1.
[ Hits: 5034 | Votes: 4 | Rating: 8 ]
- G3EJS portable antenna for the IC-703
- A portable antenna for 40 20 15 10 and 6 meters operations to be used and tuned with the Icom IC-703
[ Hits: 3332 | Votes: 9 | Rating: 7.11 ]
- DCTL Antennas and other compact antennas
- The Distributed Capacitance Twisted Loop is an inexpensive, effective, resonant alternative that can fit in a 8' tall by 12' or so wide space, like a wall, or balcony, even on 80 meters. 160 meters from an apartment, a full wave look and a cage dipole
[ Hits: 4403 | Votes: 1 | Rating: 5 ]
- Effects of Very Large Ground Screens
- A theoretical and experimental study of the effects of very large ground screens on 20 meter verticals
[ Hits: 464 | Votes: 0 | Rating: 0 ]
- The EZ-Tuner
- The "EZ-Tuner" is a homebrew automatic legal-limit antenna tuner that covers all amateur HF bands from 160-10 meters. Using a T-network design and controlled by a BASIC Stamp BS2sx microcontroller, the EZ-Tuner will match at least a 16:1 VSWR for either unbalanced or balanced transmission lines.
[ Hits: 5567 | Votes: 1 | Rating: 9 ]
- N8LGL
- 2,6 and 10 meters beacon located at Lake White, Ohio
[ Hits: 1489 | Votes: 26 | Rating: 8.64 ]
- Russian VHF Trophy
- For carrying out of bilateral QSOs on band of 2 meters, 70 and 23 centimeters all kinds of modulation. It is authorized to spend QSOs, using all kinds of passage: TROPO, ES, AURORA, MS, FAI, EME, IONO,
[ Hits: 651 | Votes: 0 | Rating: 0 ]
- Spectrum Analyzer Real-time FFT
- Eight-channel Audio Spectrum Analyzer is a set of Real-Time Multi-Channel Gauges for investigation of data accepted from any ADC you will want or 16-, 24- and 32-bit ADC of sound card. WDM drivers support. FFT Spectrum Analysis, OscilloScope, Frequency counter, AC/DC voltmeter, Signal-to-Noise Ratio, Signal-to-Noise and Distortion, Spurious-Free Dynamic Range, Effective Number Of Bits, Total Harmonic Distortion, Inter-Modulation Distortion, Phase Shift. Special modes of dual-channel FFT spectral analysis: Separate channels spectra, Spectra of digital sum, difference, product of two signals, Spectrum of digital product of original signal and its fundamental, Spectrum of Real and Complex Transfer Function, Cross Spectrum. Standart weighing of spectra according IEC and CCIR. Oscilloscope modes (for dual-channel ADC) are: original signals, sum, difference, dependence of one channel on another, amplitude distribution of input signals.
[ Hits: 11313 | Votes: 9 | Rating: 7.77 ]
- Amplifier for 15 and 17 meter band
- The two linear amplifiers are ment for use with QRP SSB/CW/FM/AM transmitters on the amateur bands 15 and 17 meters can be powered from a 12 volt DC supply by ON6MU
[ Hits: 1608 | Votes: 0 | Rating: 0 ]
- 50 Mhz solid state 600W amplifier
- G3WZT John Matthews project of a 600 Watt solid state linear amplifier for the 6 meters band
[ Hits: 2176 | Votes: 0 | Rating: 0 ]
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