40 meter mod
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Antennas : 40M : 40 meter Dipole Antennas- Ham radio 40-meter dipole: your first antenna
- How to home made a custom home made dipole antenna for the 40 meters band, just 66 feet long. Enjoy the band openings during the evening and play morse code or digital modes on this magic band.
[ Hits: 198 | Votes: 0 | Rating: 0 ]
- Half-Length Dipoles for 40 Meters
- Complete collection of the four main parts of this excellet research on modelling and designing half wave dipole antennas for 40 meters band, covering all aspects beginning from full wave length antennas, to shortened, loaded and reshaped dipoles
[ Hits: 382 | Votes: 2 | Rating: 10 ]
- The KL3JM modified SRI Fan Dipole for 80-40-20 Meters
- The antenna in this project is a modification of the techniques used to design a multiband fan type dipole with little or no tuning involved having a total space of 105 feet
[ Hits: 502 | Votes: 1 | Rating: 5 ]
- 6 Bands Fan Dipole Antenna
- Extension to an existing fan dipole originally modeled for 40 20 and 6 meters. This modification will add 80 15 and 10 meter bands.
[ Hits: 1299 | Votes: 2 | Rating: 5 ]
- Reversible 40 Meter Moxon
updated
- The author wants a compact, switchable antenna for 40-meter ham radio. They compare 3 designs: rectangle, short-tipped W6NL, and T-hat. All work well electrically, but mechanics matter for a large antenna. The rectangle needs strong support, while the T-hat is sturdier with slightly longer elements. The T-hat design wins for now, but the author will focus on its mechanical details next.
[ Hits: 74 | Votes: 2 | Rating: 5.5 ]
- Modified Ground Plane Antenna Adds Second Band
- This article explains the trick of how to shorten and lengthen pairs of radials to make a 2-band ground plane antenna.
Included is a "Table of Multi-Band Possibilities" covering the range of 6 to 40 meters.
[ Hits: 53 | Votes: 0 | Rating: 0 ]
- World Wide Digi DX Contest
- World Wide Digi DX Contest 2019 The contest will occur over 24 hours on August 31 and September 1, 2019 using the FT4 and FT8 modes on the 160, 80, 40, 20, 15, and 10-meter bands.
[ Hits: 156 | Votes: 0 | Rating: 0 ]
- Arduino QRP Transceiver: DIY Success on HF Bands
- This article introduces an Arduino-based QRP CW Transceiver designed for lower HF bands. The journey begins with the Wotduino, evolving from a keyer to a multi-mode beacon. The development includes a QRP transmitter and culminates in a receiver inspired by Roy Lewallen design. The transceiver, controlled through a control bus features a signal path, modulation, filtering, and adjustable frequency settings. Despite initial testing intentions, successful QSOs on 80 and 40 meters showcase its functional capabilities.
[ Hits: 110 | Votes: 1 | Rating: 1 ]
- PT40 7 MHz Transceiver by AA3SJ
- Home made 40 meter transceiver project. The receiver is a Progressive Receiver with a few modifications. The Transmitter is a modified MFJ Cub circuit. Includes schematic and circuit diagrams for Receive Input Filter, 3-Pole 500 Hz Cohn Filter and 7 MHz Double Tuned Bandpass Filter
[ Hits: 163 | Votes: 0 | Rating: 0 ]
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