q file

689 links

10m Aluminium Moxon Construction - Building a moxon antenna with aluminium tubes
[ Hits: 11783 | Votes: 8 | Rating: 5.13 ]

Monster Quads - N6LF tells us about his monster two-element 40-meter quad, with bonus three elements on 20 and 15 meters.
[ Hits: 6376 | Votes: 0 | Rating: 0 ]

160-meters antenna problems and solutions - Bill Orr W6SAI ham radio techniques. Improving ground connection, computer analysis of the antenna, modelling sample antennas pdf file
[ Hits: 3518 | Votes: 6 | Rating: 9.3 ]

40-80 Dipole antenna - A 40 80 dipole antenna design by WA6ESC PDF File
[ Hits: 2655 | Votes: 3 | Rating: 5.33 ]
Using the half-square antenna for low bands - Can’t put up a really high horizontal antenna for 80-meter DXing? Maybe the vertically polarized Half-Square might be the antenna for you.
[ Hits: 3210 | Votes: 3 | Rating: 6.33 ]
Broadbanding the half-square on 80 meters - N6LF discusses a simple way to broadband the classic half-square antenna to operate in both the CW and SSB DX windows on 80/75 meters.
[ Hits: 2284 | Votes: 2 | Rating: 4.5 ]
A Horizontal loop for 80 meter dx - This 80-meter quad loop system requires only supports of modest height a better single-element antenna may be hard to find
[ Hits: 6565 | Votes: 4 | Rating: 5.5 ]

Indoor multiband dipole - This indoor dipole is available in two version for 20-10 meters and 40-10 meters. EZNEC data files available by HB9MTN
[ Hits: 7089 | Votes: 5 | Rating: 7.2 ]

Copper Cactus J pole 2 metter 70 Cm dualband - Homebrew a j-pole 2mt and 70 cm antenna project. Make it cheap. This article includes homebrewing instructions, parts lists, tools needed and printable documentation.
[ Hits: 10355 | Votes: 29 | Rating: 6.35 ]

160 m Balanced Coaxial Receiving Loop Antenna - W4HM explanation of the 160 meter balanced coaxial receiving loop antenna, easily adaptable to a 40 and 80 meters band
[ Hits: 6573 | Votes: 7 | Rating: 6.4 ]

Antentop: Loop Antennas - Article on radiation patterns of small loops, equivalent circuits of loop antenna, small loops as receiving antennas, ferrite loops
[ Hits: 2169 | Votes: 4 | Rating: 8 ]

SpiderBeam construction guide - Build a spiderbeam from scratch for 20-17-15-12-10 meters band
[ Hits: 2568 | Votes: 5 | Rating: 6.67 ]

Currents in Standing-Wave Antennas - How can the current "flowing" out of the top of a mobile loading coil be greater than the current "flowing" into the bottom of the coil?
[ Hits: 639 | Votes: 0 | Rating: 0 ]

US Grid Square Map - A PDF file containing the US grid square map provided by Icom america.
[ Hits: 5730 | Votes: 15 | Rating: 7.94 ]

ITU Zones map - Free Donwload of the PDF file of ITU and CQ zones of the world, made available by Icom America
[ Hits: 2587 | Votes: 9 | Rating: 6.97 ]
CQ Zones World Map - A 6 Mb PDF file of CQ Zones and ITU Zones and prefixes made available to download by Icom America.
[ Hits: 12044 | Votes: 52 | Rating: 6.91 ]

The 160-Meter Band: An Enigma Shrouded in Mystery - Lights on why 160 meters is so unpredictable and what is being done to reveal its secrets
[ Hits: 1153 | Votes: 1 | Rating: 9 ]

PSK08 - G4JNT - PSK08 Software for the 56002EVM. PSK08 is a data communications mode identical in operation to PSK31, but operating at one quarter the speed, ie. approximately 8 symbols per second. Direct download link to psk08.zip file.
[ Hits: 735 | Votes: 0 | Rating: 0 ]

Narrow Band-Pass filter for HF - Band-pass filters can be critical components in competitive stations. This setup may help put your station on the map.
[ Hits: 2565 | Votes: 1 | Rating: 1 ]
Clean Up Your Signals with Band-Pass Filters - These inexpensive, easily built filters can be the buffer you need between the signals you want to hear and send and those you don't!
[ Hits: 3620 | Votes: 0 | Rating: 0 ]