mode b
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Antennas : 40M : 40 meter Yagi Antennas- 40 Meters 3 element Wire Yagi
- A three element wire yagi antenna for 7 MHz project plan with drawings and EZNEC model
[ Hits: 2197 | Votes: 7 | Rating: 4.71 ]
- 3 Element 12,5 Ohm Yagi for 50 MHz
- Article about a high-gain, narrow-band version feature 7.15 dBd and a F/B 13dB with details on how to setup in array mode
[ Hits: 469 | Votes: 2 | Rating: 6.5 ]
- Bent Dipoles reference website
- Antenna modeling discussions about What happens if... a dipole is bent horizontally, laterally, vertically. Zig-zag, meander, catenary curve.
Effect of sag, elevation, radials. OCF off-center feed, harmonics. Includes 4NEC2 antenna models for each study.
[ Hits: 710 | Votes: 0 | Rating: 0 ]
- ZS6BKW vs G5RV
- An exaustive comparison of the two antenna models including antenna Patterns/SWR at 40 ft center height, 27 ft end height ~148 Degree Included Angle
[ Hits: 1400 | Votes: 4 | Rating: 7 ]
- Mixed Mode Helical Antenna
- An experimental omni-directional antenna for 70cm which has both horizontal and vertical gain
[ Hits: 1006 | Votes: 3 | Rating: 8 ]
- Broadband hexbeam
- This version of the broadband hexbeam is based on the work of Hunt G3TXQ, HB9MCZ, and Shoemaker K4KIO. EZNEC model is based on a wider element spacing than the version published in QST by K4KIO
[ Hits: 573 | Votes: 5 | Rating: 7.8 ]
- The Balcony Mounted Magnetic Loop Antenna
- A NEC Model Comparative Analysis of Physical Orientation and Performance. The small magnetic loop is a useful compromise antenna for limited space and portability. For this reason, the magnetic loop antenna is a practical high frequency antenna solution for the restricted space of apartment dwellers
[ Hits: 815 | Votes: 3 | Rating: 9.67 ]
- Guy Cables
- Some information from a research into guy cables to support antenna tower modeling efforts.
[ Hits: 291 | Votes: 0 | Rating: 0 ]
- Basic Wire Antennas Part I
- A presentation of popular wire antenna models like Dipoles, half size, full size, doble zepp, ocf dipoles, G5RV
[ Hits: 1652 | Votes: 0 | Rating: 0 ]
- CW Bass Ackwards
- CW-R Explained. CW reverse mode CW-R receives CW signals with a reverse side CW carrier point like that of LSB and USB modes
[ Hits: 503 | Votes: 1 | Rating: 10 ]
- Getting Started with RTTY/PSK
- The data modes have become particularly popular in recent years, with RTTY and PSK31 being heard almost every evening, particularly on 20 metres. So, now is a very good time to get started.
[ Hits: 260 | Votes: 0 | Rating: 0 ]
- Elecraft KX2 Brochure
- The official KX2 brochure from Elecraft. The KX2 is a modern portable QRP HF transceiver that fits in your pocket
[ Hits: 593 | Votes: 1 | Rating: 9 ]
- Icom IC-7300 review by GM4FVM
- Author reviews the physical appearance and ergonomics, performance on common operating modes, data modes and computer operation.
[ Hits: 147 | Votes: 1 | Rating: 8 ]
- Dual Scope Mode on the Icom IC-7851
- A video demonstrating one of the great features on the IC-7851, the ability to have two scopes on the display at the same time.
[ Hits: 228 | Votes: 0 | Rating: 0 ]
- Yaesu FT-891
- HF/50 MHz 100W All Mode Transceiver. The FT-891 provides stable 100 W (25 W AM) high power output
[ Hits: 435 | Votes: 2 | Rating: 9 ]
- Yaesu FTDX3000 Setup for Digital Modes
- Yaesu FTDX3000 Sound card digital modes setup using internal USB interface
[ Hits: 869 | Votes: 1 | Rating: 10 ]
- Arduino CW Terminal
- This article describes firmware and minimal hardware for encoding and decoding of on-air CW using an terminal/modem based on these controller boards.
[ Hits: 679 | Votes: 0 | Rating: 0 ]
- Arduino Beacon
- A new multi-mode QRP radio beacon built around the Arduino. The beacon started with the usual lash-up on the bench, hooking the previously reported Wotduino and DDS Shield up to a driver and a transmitter module, as previously used for the Raspberry Pi beacon
[ Hits: 707 | Votes: 0 | Rating: 0 ]
- AX.25 on Arduino
- AX.25 Packet Modem homebrew project on Arduino
[ Hits: 637 | Votes: 1 | Rating: 1 ]
- A Modern Directional Power/SWR Meter
- Every ham needs an RF power meter. Here is a high performance unit to build at home.
[ Hits: 1564 | Votes: 2 | Rating: 5.5 ]
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