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Antennas
A Collapsible 2-Element Delta Quad
- This easy-to-build and inexpensive 2 meter antenna is also made to store easily. It's designed for hand held use, so it's great for fox hunting! By Charles Scharlau, NZØI
5 Element yagi for 10 meters
- A directional 5 element yagi antenna for 28.5 Mhz in spanish
A 2 elements yagi antenna for 28 Mhz
- An inexpensive antenna for 10 meters band in spanish
A 7el VHF yagi
- DK7ZB'7 element yagi beam
2 meter dipole antenna
- Pictures comments and detail on a 2 elements antenna for 2 meters band
40M 3 element beam
- History project and dimensions of a 3 element yagi beam for 40 meters band
JA7KPI Windom antenna for 40-80
- The total length of this antenna is 41m, height is about 11m, and diameter of element is 2mm.
JA7KPI modified this antenna originally used as Inverted-V type of 80m band Dipole.
Works on 40 - 80 meters band with acceptable swr.
2 Elements revesible verticals antennas
- 2 element reversible verticals, small footprint, big results.
Hex Beam for 6 meters
- This is a hex beam designed for six meters. It has three elements with a turning radius of 54 inches. This antenna can be built from low cost materials available from the local hardware store. By WB3BEL
50 Mhz 5 element EMT Conduite Beam
- VA3EXT 5 element beam antenna for 6 meters band
Chokes Explained
- A "choke" is the common name given to an inductor that is used as a power supply filter element. They are typically gapped iron core units, similar in appearance to a small transformer, but with only two leads exiting the housing
4el. Hentenna for 50MHz
- A 4 elements Hentenna for six meter band
6-Band Windom antenna
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- Theory and construction of a novel trapless center-loaded off-center-fed (cl-ocf) dipole or windom antenna for the 80, 40, 30, 20, 15 and 10m hf amateur radio (ham) bands
LF MF Antenna Tuner
- W5JGV antenna tuner for 150 - 500 Khz band
Pacific T.V. Online Tube Catalog
- Vacuum tubes and sockets for radio, audio and amateur use. Over 1500 types, online schematics and technical data
Contest University
- After a year of preparation, 150 students and 11 professors participated in 10 hours of intense Contesting instruction covering some 22 topics, with over 400 pages of text
Mackenzie Highway Network
- The Mackenzie Regional ARC currently Operates the VE6PRR (146.82- ) repeater. It's located approximately 15 Km North of Peace River. It is linked to the SARA system via Grande Prairie. We are currently in the process of expanding the coverage by adding number of repeater sites through out the area.
the Quarter Century Wireless Association
- Wild Rose Chapter 151 - Alberta
Web and ATV Camera Frauenstaffel
- Webcameras, Frauenstaffel - Waidhofen - Austria, ATV-Webcam on a 150feet high radiotower.
3 EL Quad Designer
- This DOS program will figure the wire sizes for a 3 element quad and will also give you the distance from the center of the boom to drill your holes for mounting the wire on the spider. it also gives you the length of the 4 quarter wave lengths of wire in case you would like to figure the spreader drill points yourself.
2 Element beam designer
- This is a DOS program that will design a 2 element beam for a given frequency. The gain is about 6db's the front to back ratio is about 10 db's. The SWR will be about 1.8 to 1, so for transistor rigs a tuner is needed The only information required is the freq in MHZ..
FreeSCAN
- Freeware windows program for programming the Uniden SC230, BC246T, BC330T, BCD396, BC15T and BCD996T scanners. FreeSCAN allows to download and uploading programming, remote control the scanner, log hits, and supports printing out of systems and groups.
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
Build a 2 meter duplexer
- The duplexer is conservatively rated at 150 watts input, but it should withstand up to 300 watts.
15 A from a PC Power Supply
- 13.8 V 15A from a PC power supply
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