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Antennas : 80M
- Coil loaded dipole for 80 meters
- Coil loading of an 80m Dipole for restricted space.
Here's a method that may allow you to fit that 80m dipole into your suburban backyard by VK3JEG
[ Hits: 4672 | Votes: 4 | Rating: 6.25 ]
- Base Loaded 160M Half-Sloper Antenna
- K0EMT 160 meters sloper antenna
[ Hits: 3318 | Votes: 0 | Rating: 0.00 ]
- Antenna Measurement Theory
- Introduction to Antenna Measurement by orbit /fr pdf file
[ Hits: 1684 | Votes: 0 | Rating: 0.00 ]
- HF Antennas 101
- Here are 10 tips and truisms that every ham should know about antennas, by W20QI
[ Hits: 614 | Votes: 0 | Rating: 0.00 ]
- UK CB Radio.org.uk
- Set up for CB radio users in the UK and also world wide to exchange knowledge and experiences, generally hang out, with relevant news, articles, downloads and gallerys.
[ Hits: 534 | Votes: 3 | Rating: 9.33 ]
- AA4DF's Consumer Electronics Repair
- Look for free manuals (download) in amongst paid offerings for test equipment manuals. The freebies page also has mostly ham material. We do also sell major ham collections at pretty much close to our production and distribution costs.
[ Hits: 796 | Votes: 2 | Rating: 5.50 ]
- RF-overload for Icom IC 746 756 series
- The following transceivers can be susceptible to damage from a strong RF field (or RF-overload) IC-746 IC-746PRO IC-756 IC-756PRO IC-756PROII
IC-756PROIII n1eq explain why
[ Hits: 3304 | Votes: 4 | Rating: 8.00 ]
- WideBand for Yaesu 817 857 897
- Free Download of Widebander.
This software will allow you to extended TX for the Yaesu FT 857 FT 817 FT 897 and reset back to standard factory defaults.
Warining: this programs looks like not to be supported. Download and use it at your own risk.
[ Hits: 39788 | Votes: 60 | Rating: 6.05 ]
- Free Windows APRS Client with capability of downloading free aerial photo and topo map data.
[ Hits: 1031 | Votes: 1 | Rating: 10.00 ]
- AADE Filter Design
- Dowwnload this free windows programs to design Butterworth, Chebyshev, Elliptic (Caur), Bessel, Legendre and Linear Phase low-pass, high-pass, band-Pass, and band-reject filters. Coupled Resonator band-pass filters
[ Hits: 22242 | Votes: 88 | Rating: 7.16 ]
- HxPI Morse Jabberwocky
- A translation of Jabberwocky into Morse Code. The famous nonsense poem Jabberwocky by Lewis Carroll, from Alice Through the Looking Glass, has been translated into many languages. Here it is in Morse Code, as MP3 audio files that can be downloaded. The files are at different speeds (words per minute, wpm) to suit those at different stages of learning morse code.
[ Hits: 687 | Votes: 2 | Rating: 4.50 ]
- SigJenny turns your PC into a flexible and powerful audio signal generator for free.
It can create multiple waveforms, sweep, fire single or repeating tone bursts. You can save your sound as a wav file, display a frequency response, use SigJenny a bit like an oscilloscope, and do a very good impression of a police car!
[ Hits: 16335 | Votes: 16 | Rating: 6.31 ]
- FreqLoader: iPhone companion for the mobile ham
- FreqLoader is the perfect iPhone/iPod Touch companion for amateur radio operators, monitoring enthusiasts, shortwave listeners and anyone with an interest in the air waves.
Whether you're an active licensed ham or an avid scanner listener, FreqLoader will allow you to find what you're looking for, keep track of your stations, maintain complete logs and share your finds with friends, groups and the world.
[ Hits: 5529 | Votes: 12 | Rating: 6.57 ]
- Improper Loading of Amplifier
- Improper tank adjustment and excessive drive are equally harmful to component life, and either can create splatter
[ Hits: 631 | Votes: 1 | Rating: 1.00 ]
- Power Aamps RF voltages
- This test circuit is easy to duplicate, and demonstrates the extreme voltages that appear in an amplifier when the load is improper for the amount of drive power applied.
[ Hits: 676 | Votes: 1 | Rating: 10.00 ]
- A 25 Watt Dummy Load
- Dummy load described here can be used for up to 35 watts for short transmissions, and up to 25 watts for longer periods.
[ Hits: 4590 | Votes: 5 | Rating: 2.80 ]
- Building a dummy load
- Building a Dummy Load and Measuring Power Accurately
by Ken, K4EAA
[ Hits: 7352 | Votes: 7 | Rating: 7.43 ]
- Build A 30W 50 Ohm Dummy Load
- For testing out transmitters every ham should have a dummy load, here is explained a 30 watt 50 ohm dummy load
[ Hits: 2726 | Votes: 2 | Rating: 5.50 ]
- The 50 ohm dummy load
- Made from two sheets of single sided copper board, copper facing to the outside.
[ Hits: 2691 | Votes: 3 | Rating: 4.00 ]
- What's a diplexer?
- It's a network that splits a signal to two or more loads, dependent on frequency. It is the simplest form of a multiplexer, which can split a signal into many different signal bands.
[ Hits: 1607 | Votes: 0 | Rating: 0.00 ]
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