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507 cool links - Pages: [<<] 1 2 3 4 5 6 7 8 9 10 11 [>>]
A portable 10/20/40 mt vertical antenna
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- A portable vertical antenna for 10 to 40 meters, designed for mobile operations can be used in a car as seen in pictures. A modified version for 20 and 40 meters is described too.
80 Meters frame antenna
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- Frame antenna for 80 and 160 meters band
A Lowband Antenna that is Almost Free
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- The Shunt-fed Tower, an effective Low Band Antenna, uses your beam as a capacitive top-hat and only needs a simple feed network and a good ground system to work DX on 80M and 160M.
A Practical Antenna for 160 Metres
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- 140 feet of insulated wire, the first half of which (70 feet) is space wound on an insulated tube.
7 Elements YAGI for 144 Mhz
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- The QM7 antenna is a simple 7 elements Yagi with 3.7 m boom length for the lower 144 MHz
SSB/MGM band, in PDF Format
8 Element Quad for 145 Mhz
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- 8 elements quad antenna for 2 meters band, centered on 145 Mhz
9 element yagi for 2 meters band
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- A simple design of a 9 elem. yagi antenna for 2 meters band
A 146 Mhz J-Pole Antenna
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- A 2 meter (146 Mhz) J-Pole antenna that is inexpensive, and easy to build.
A portable 2-element VHF yagi
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- Build a portable VHF yagi antenna for 2 meters. All you need is two rabbit ear antennas from Radio Shack, two CATV baluns, four feet of 3/4 CPVC pipe with one tee.
7 MHz Vertical antenna
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- 7 MHz Vertical antenna for ham radio - 40 meter band in spanish
7Mhz Vertical antenna
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- The secret with this antenna is to install as many radials as you can around the base of the antenna, they can be anything from 1/8 wave or longer.
A linear loaded vertical antenna
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- Vertical antenna design by David Reid PA3HBB G0BZF
A dipole for 6 meters band
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- Six meters band dipole horizontal or vertical
70 cm ATV Antennas
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- Home made antennas, ATV stuff, 70 cm antennas, helix antennas and a lot of intresting pictures to view
80 Meters EH Antenna plan
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- Building this antenna is very easy and inexpensive, 6 Foot EH Antenna
80 meters wire antenna
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- A reduced-size 80-meter antenna designed for small lots, portable use, and a fine companion for QRP
80m 2 element Yagi antenna
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- 2 elements short boom yagi for 80 meters
80M Vertical antenna with capacitance hat
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- Simple wire antenna cheap to make, using readily available materials, Low angle radiation, with rejection of high angle signals Wide bandwidth, with resonance at the 80M DX window (3.790-3.800 MHz); and Maximum height is 40 feet
A $50 Beverage
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- This antenna makes 80 and 160 enjoyable. Less than $50 to hear Europeans all summer on the LF bands seems like a good deal if you have the space!
A magnetic loop antenna for HF
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- Able to cover all frequencies between 3.5 and about 10 MHz, the loop described here is directional, does not require a radial system, and stands just 1.8 metres tall. Most parts needed can be purchased at a hardware shop. The antenna can be put together in an afternoon and requires only hand tools to assemble. It should cost less than sixty dollars to build.
by Peter Parker VK3YE ex VK1PK
A wideband 80 meter dipole
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- This worthy antenna is so simple and inexpensive you will want more than one by N6LF
Home : Antennas : Antenna Calculators
A Simple 7 element Yagi calculator
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- A JavaScript to calculate the dimensions for a seven element Yagi-Uda Antenna
A better antenna-tuner balun
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- Which balun to use? The hybrid balun promises
advantages over both voltage and current baluns by ZS1AN
Home : Antennas : Baluns : 1 to 1 Balun
A 1:1 Coaxial Balun
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- PDF article on a coaxial 1:1 balun by I0QM
Home : Antennas : Baluns : 4 to 1 balun
A 4:1 Balun
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- A single-core 4:1 current balun of improved performance by Chris Trask N7ZWY PDF file
6dB colinear VHF antenna
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- Building details of a VHF colinear antenna with 6 db gain
6dbi Colinear Antenna for Wireless LAN
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- This is an short description on how to make a cheap omni antenna for 802.11 wireless LAN cards.
Home : Antennas : Delta loop
A Vertically Polarized Delta Loop for 40m
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- Practical contruction and designing notes of a delta loop for the 40 meters band
Home : Antennas : Feed Lines
A T-Match ATU
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- An homebrew antenna tuner project
A J-Pole for 2-meters and 70-cm
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- An Easy Dual-Band VHF/UHF Antenna from QST September 1994
A Small Loop Antenna for Forty Meters
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- Article on a small loop antenna for forty meters band by Ben Smith, W4KSY
A Small Wire Loop Antennas for 160 meters
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- Low noise, receive only coax loop antennas for 160 - 10 meters HF bands
AM Antennas
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- The ultimate AM loop antenna article. It is the only article that includes the calculations and detailed plans
Home : Antennas : Magnetic Loop
A magnetic loop antenna
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- Magnetic loop antenna by GM3MXN
A Portable Multi-Band Magnetic Loop Antenna
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- Described here is a simple multi-band magnetic loop antenna designed for 20, 30 and 40 metres, but by changing the overall length of the wire coverage of other bands is feasible
A two dollar helical hf portable antenna
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- Here’s an easily transportable vertical antenna for 20 meters collapsible to 4 feet that costs about $2.00 to make.
This was created as a fun project to demonstrate how to enjoy operating HF in the field with a home-made portable antenna without spending a ton of money.
Bev AH6NF (YL) made this antenna, tuned and ready to operate in less than one hour
A *balanced* balanced antenna tuner
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- The published version of this article appeared in the February 1990 issue of QST Magazine
80 & 40 Meters vertical antenna
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- May work on 160 meters too, by EI7BA
9 band vertical HF antenna by RW3XA
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- Simple vertical radiator with matching box. No traps, no tuner required.
A low cost fishing pole vertical antenna
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- This antenna is based on a 10 Metre long fibreglass fishing pole, by G4AON
802.11b Homebrew WiFi Antenna Shootout
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- Guide to homebrew your wifi antenna, using a tin can, in this cases using a pringles can. This antennas are also known as cantenna and let you spread your wifi signal.
A 2.4 Ghz High gain antenna
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- Here is how to build a high gain antenna for 2.4 gHz wireless networks. Several hams are experimenting with these devices in an effort to build a network. It is sometimes referred to as Hinternet or HSMM.
Home : Manufacturers : Antenna Masts and Mounts
ACOM
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- ACOM international, manufacturer of HF power amplifiers, HF Antennas, Antenna tuners, Switches and Crankup masts
Home : Manufacturers : Wattmeters
Alpha Linear Amplifiers
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- RF Concepts manufacturer of Alpha Linear Amplifiers, amateur radio RF power amplifiers, commercial power amplifiers, power meters and dummy loads.
Home : Shopping and Services : Batteries
Amateur Electronic Supply
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- Web site in Milwaukee. Other locations in Wicklife, OH - Orlando, FL - Las Vegas, NV. Carries a full line of amateur radio equipment, antennas, batteries, mics, etc.
Home : Technical Reference : Amplifiers
A low cost 600 watt ultra-linear amplifier
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- This compact little amplifier is the brain-child of Pat Murdoch, ZL1AXB, in Auckland, New Zealand. It is only 11" wide, 4" high, and 9" deep.
Operates for 40, 20, 17, 15, 12, and 10m
Home : Technical Reference : Amplifiers : HF Amplifiers
600 Watt HF Amplifier
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- Schematics plans by K9GDT and all infos to build a 600 Watt HF Amplifier
Home : Technical Reference : Homebrew
7 MHz SSB Transceiver
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- Circuit diagram and discription of 7 MHz Ham Radio SSB Transceiver. Transceiver using two MC1496, 4.43 MHz Ladder filter, LM386, LM324 and IRF840 in final.
A 20 Ampere / 13,8V power supply
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- A 20 ampere and more 13,8V power supply for RTX
Home : Technical Reference : Mic wiring
About Mic-wiring
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- Kenwood Alinco and Icom Mic Wiring diagrams by pictures
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