mode s

795 links - and 14 categories

Trapped dipole for 80 and 40 m - This article explores a theoretical model for the losses of an 80m / 40m trapped inverted V dipole antenna system using a bootstrap coax trap, but does not examine the pattern of the antenna.
[ Hits: 2731 | Votes: 0 | Rating: 0 ]

Axial-Mode Helical Antenna Calculator - Simple implementation of the ARRL Antenna Book design equations for the axial-mode helical antenna.
[ Hits: 2853 | Votes: 15 | Rating: 5.4 ]

Practical Guanella 1:1 balun - This article proposes a lossy transmission line model of a practical Guanella 1:1 balun that is effective for all frequencies within and immediately adjacent to the pass band
[ Hits: 3619 | Votes: 3 | Rating: 3.33 ]
Guanella 1:1 VHF choke balun - A model of a Guanella 1:1 VHF choke balun using a FT140-61 core
[ Hits: 3620 | Votes: 9 | Rating: 3.11 ]

Antique Radio Repair and Restoration - Classic Radio Restorations specialize in professional repair and restoration on all makes and models of antique radios and vintage phonographs. Since 1978.
[ Hits: 1081 | Votes: 0 | Rating: 0 ]

TARA's all Seasons Contests - Digital modes contest rules by TARA. Offers the All Seasons contest Tournament. A new concept in contesting.
[ Hits: 364 | Votes: 0 | Rating: 0 ]

D-Star presentation and sounds - A powerpoint presentation of the D-STAR operating mode by K7VE includes d-star sound samples
[ Hits: 2173 | Votes: 5 | Rating: 2.4 ]

Farallon Electronics - PACTOR mode radio modems and accessories, performance sailing electronics and innovative hard to find parts. Audio cables, packet cables, usb to serial converters
[ Hits: 810 | Votes: 0 | Rating: 0 ]

DX marathon Award - Simply work as many countries and CQ Zones as you can in each calendar year, regardless of the band or mode
[ Hits: 553 | Votes: 0 | Rating: 0 ]

DStar- is anybody else worried about this? - D-Star is being promoted as a new digital voice transmission mode "For the second century of Amateur Radio" - but does it really fit into the spirit of the hobby?
[ Hits: 410 | Votes: 0 | Rating: 0 ]

Digital Modes used in Ham Radio - Article with waterfall pictures and samples of several digital modes like psk31, sstv packet pactor hellschreiber domino thor jt65 and more
[ Hits: 1129 | Votes: 3 | Rating: 7.67 ]

Sights and Sounds of Digital Signals - Preview the waterfall signature of various digital signals and listen to the sound of the digital modes. Learn about the bandwidth requirements and why a linear transmitter path is critical to successful and correct use of many modes on the amateur bands by W1HKJ
[ Hits: 1046 | Votes: 3 | Rating: 6.67 ]

W1TAG WD2XES WE2XGR/3 - Experimental Stations Run by W1TAG WD2XES has been used to study LF antenna design, propagation and communication modes. Signals from WD2XES have been copied as far away as Russia.
[ Hits: 392 | Votes: 2 | Rating: 10 ]
Low Frequency Transmission Modes - Article by W1TAG on operating modes used on low-banding. The 2200 meter band (135.7 - 137.8 kHz) is only 2.1 kHz wide, so voice work on SSB or AM is out. Find out the best modes on LF
[ Hits: 438 | Votes: 0 | Rating: 0 ]
Keyboard Modes for 600 Meters - Evaluation of various operating modes on 600 meters
[ Hits: 791 | Votes: 0 | Rating: 0 ]

Olivia, the Magic Digital Mode - Olivia MFSK digital communications are becoming popular in amateur radio because Olivia is one of the most robust methods of text keyboarding, that can perform superbly for long distance communications. Olivia frequencies, format and software
[ Hits: 1932 | Votes: 8 | Rating: 8.38 ]

Brown Brothers Machine Keys - The purpose of this article is to describe in detail the Morse code keys made by the Brown Brothers Machine Company (BBMC), to aid the serious key collector in identifying each model made by this fine company.
[ Hits: 1087 | Votes: 3 | Rating: 6.67 ]

PacTerm for Windows - PacTerm for Windows is a commercial host mode terminal software for the Kantronics TNCs takes advantage of the true multitasking capabilities of Windows.
[ Hits: 3499 | Votes: 8 | Rating: 7.5 ]

SPLAT! for Windows - This free software is useful for visualizing terrain and performing Longley-Rice path loss and coverage prediction using the Irregular Terrain Model. A Windows port of the Linux-based SPLAT by John Magliacane.
[ Hits: 9510 | Votes: 42 | Rating: 6.48 ]