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Antennas : 20M : 20 meter Yagi antennas
2-Element-Yagis for HF
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- 2-Element parasitic Yagis for the Shortwave-Bands 10-12-15-17-20-30m. The antennas are feeded with the DK7ZB-match. A quarter-wave choke of coax is grounded at the socket.
Shorty Forty Antenna
- Short dipole antenna for 40 meter ham band.
Can be put up in the space required for a 20 meter dipole.
40 meter delta loop - M0MCX
- Pictures and details of a wire delta loop antenna for 40 meters band
40 meter shortened dipole - M0MCX
- Interesting little project with a couple of loading coils by M0MCX
Morgain Antenna for 40/80
- Simple and cheap antenna for 40/80 meter band
Antena Bazuca
- Drawings and short descriptio in spanish for dipoles and bazooka antenna.
20m QRP Dipole
- Instructions to build a portable dipole for 20 meters
Shortened Center-Fed Half-Wave Dipole
- Design your owm HF shiortened dipole
HF Mobile Antenna HB9ABX
- Most efficient hf mobile antenna, This mobile antenna is designed for all HF bands from 10 to 80 meters an proved to be very efficient in my travels in South America on 15 and 20m for contacts to Europe and within South America.
Whip antenna for Yaesu FT-817
- Picture collection of a whip antenna similar to the Whip Miracle, in italian
2-Element-DK7ZB-Quad for 5 Bands
- 10-12-15-17-20m A description was in the German Ham-Magazine "Funkamateur" in Issue 11/2003
AMANDX Dipole
- The longwire antenna is a very effective antenna for the listener who wants to cover all of the shortwave bands from 530 KHZ to 30 MHZ.a
Receiving Antenna Design
- Learn basic theory on antennas, and notes on homebrewing efficient shortwave antennas
2.4GHz Short Backfire Antenna
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- My short backfire antenna for 2.45ghz by carl rabe - g6nlc
DirectionalBiQuad - Seattle Wireless
- A biquad is a fairly powerful antenna which is relatively easy to construct, with impressive performance for their size. A link greater than 5 miles can be made with a pair of these as a stand-alone antenna and a Prism2 100mW card, provided you keep coax short, and your line-of-sight is clear.
Cebik antennas and limited space dipoles
- An analysis of the cebik dipole and other small limited space dipoles fed with open wire ladder line.
Wire-Beam
- Wire beam antenna for the bands 6m, 10m, 12m, 15m, 17m and 20m
RSGB GB2RS News casts
- Every week the RSGB produces a News Bulletin for Radio Amateurs and Short Wave listeners. They are read live on Sundays (usually) by a team of readers throughout the UK on HF, VHF and above.
Listen To The Main News MP3 (G4NJH) or to GB2RS on your iPod
Hy Power Antenna Company
- Full size or shortened dipoles, Single band or Multi band, Half Square Antennas, Fan Dipole Antennas, Delta Loop Antennas, Antennas completely assembled
Loading coil packages, delta loops
OptiBeam
- optimum short-wave antennas, developed by hams for hams
RadioLabs - Radio, Wireless and Beyond
- Specialize in engineering, design and repair of all rf equipment. Dealer for two way radios, scanners, shortwave radios, wi-fi antennas, wifi amplifiers. Based in Fortuna, California.
Radios 4 you
- Radios 4 you inc. where quality radios and other electronic products are blended with fair prices to produce excellent value for you. radios specializes in shortwave radios, solar rechargeable radios, am radios, and fm radios for sale.
WBCQ The Planet
- This summer, WBCQ is running The Voice of the M/S Katie, live radio broadcasts originating from our radio ship the M/S Katie in Boston, Massachusetts. WBCQ broadcasts 50,000 watts on each of its four international shortwave transmitters on 5.110, 7.415, 9.330 and 18.910 MHz
Cobalt pet: shortwave weblog
Priority listing
- Cobalt Pet is a weblog focusing on shortwave radio. It features shortwave reception reports, product reviews, photos, listening tips, and links. International broadcasters and amateur / ham radio operators are monitored and discussed.
A low pass filter circuit
- A simple 7 element, Chebyshev low pass filter, rolls of at 30MHz. Attenuation is better than -40dB at 60MHz, -65dB at 90MHz, -80dB at 120MHz.
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20m short
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