design

The DXZone.com

design

1015 links - and 6 categories

Antennas : 10M
  • The optimized wideband antenna - NW3Z yagi antenna designs for Dayton 2001 Includes yagis for 20 15 10 meters.
    [ Hits: 5878 | Votes: 6 | Rating: 3 ]
Antennas : 160M
  • Double Extended Zepp Antenna  pop - This double extended Zepp provides 3 db gain over a dipole on the band it is designed for. Each side or leg is about 5/8 wavelength long.
    [ Hits: 26152 | Votes: 28 | Rating: 6.35 ]
Antennas : 40M : 40 meter Vertical Antennas Antennas : 6M Antennas : Feed Lines : Choke
  • Choke Balun Designs - In this designs G8ODE explains different methods to builds a choke balun
    [ Hits: 2905 | Votes: 6 | Rating: 5.5 ]
Antennas : Homebrewing Techniques Antennas : Indoor
  • Indoor antenna de F6CYV  pop - Indoor wire antenna project for 7 Mhz band, basically a bent dipole antenna, design based on a project by F6CYV
    [ Hits: 49712 | Votes: 59 | Rating: 6.92 ]
Antennas : J-Pole
  • 2 Meter J-pole from 450-Ohm Ladder Line  pop - Great first time J-pole project. Covers most of the basics. This small and thin design also makes it good for several stealth applications.
    [ Hits: 43383 | Votes: 49 | Rating: 7.04 ]
Antennas : Maria Maluca
  • Maria Maluca Antenna by PY2BBP - The Maria Maluca HF multiband antenna as designed in 1957 by PY2BBP is a directive antenna for 15 meter and a passive element that works as director and reflector in different bands
    [ Hits: 340 | Votes: 1 | Rating: 10 ]
Antennas : Theory
  • Antennas : theory and designs - Thierry LOMBRY, ON4SKY, develops in several long articles all you need to know about antennas, their design and performance, for both amateurs and SWL
    [ Hits: 9213 | Votes: 11 | Rating: 3.27 ]
Antennas : Vertical
  • Antenna for deed restricted lots  pop - An effective 10-20m DX antenna for deed restricted lots. The article by K7ZB introduces a simple 10-20m DX antenna suitable for deed-restricted lots. The antenna, a 15' vertical design, facilitated contacts with over 200 countries worldwide. Its design employs a telescopic aluminum tube and radial wires for multi-band operation, requiring an external antenna tuner for optimal performance. The mounting scheme and construction details ensure effectiveness and ease of use.
    [ Hits: 56267 | Votes: 13 | Rating: 6.46 ]
Operating Modes : NPR New Packet Radio
  • NPR New Packet Radio - IP over 430 MHz - NPR (New Packet Radio) is a custom amateur radio digital protocol, designed by F4HDK to transport bidirectional IP trafic over radio links on the 70cm band. This IP protocol is optimized for point-to-multipoint topology, with the help of managed-TDMA. Bitrate is up to 500kbps. Home Made modem has a built-in ethernet port to connect to PC. To boost power a DMR amplifier is required to reach 20W. This project is an extension of HSMM - Hamnet - AREDN networks
    [ Hits: 151 | Votes: 0 | Rating: 0 ]
Operating Modes : Satellites : Weather Satellite
  • Quadrifilar helicoidal antenna - Design your own quadrifilar helix, the site even generates a drilling pattern in a PDF file. Several different construction methods are shown.
    [ Hits: 6076 | Votes: 16 | Rating: 6.87 ]
Shopping and Services : QSL Printing
  • ON5UR QSL print service - We are hams who design high quality full colour QSL cards. Now we print also full colour backsides on our QSL cards. 1000 cards costs only 82 Euro. For more details write max@on5ur.be``Remember: The QSO is short, our QSL cards are forever !
    [ Hits: 3636 | Votes: 12 | Rating: 8.4 ]
Software : Antenna analysis
  • Design and build helix antennas  updated - An on-line javascript calculator and quite a few pictures to show how to make a helix antenna.
    [ Hits: 17995 | Votes: 417 | Rating: 8.44 ]
  • YagiCAD - Antenna modelling examples - A freeware software package for Yagi design. This webpage also contains many sample and standard antenna downloads for experimentation.
    [ Hits: 10892 | Votes: 36 | Rating: 7.27 ]
Software : Linux
  • Smith chart calculator - linSmith is a Smith Charting program, mainly designed for educational use. It allows defining multiple load impedances (different frequencies), and adding components (discrete components and line sections) in series and parallel. It plots the impedances on the screen, shows the values in table format, and is able to generate publication quality Postscript output.
    [ Hits: 4122 | Votes: 28 | Rating: 3.92 ]
Technical Reference : Preamplifiers
  • 144 MHz preamplifier with BF981 - Design of a preamplifier for 144 MHz with 1 dB NF and 23 dB gain using BF981. This amplifier is using a low cost silicon MOSFET (BF981 from Philips) to give more than 20 dB gain with around 1 dB noise figure on 2 meter.
    [ Hits: 17958 | Votes: 28 | Rating: 5.82 ]
Technical Reference : Receivers : Regenerative Receiver

Not satisfied ? Lookup Google Custom Search Engine for design


Search design with: Yahoo!, DuckDuckGo , Bing

Search

Related Searches

Get our links, Everywhere!

Follow us on Social Networks
RSS Feeds The DXZone.com RSS feed

Sign up for daily Newsletter

Service provided by Google FeedBurner

Free for your Site

Add our gadgets to your site
Daily Top 10 links

Google Custom Search