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165 links

80m Limited Space Antenna - 46ft multi-band antenna for small gardens. Works well on 80m. An excellent DX performer and is an ideal replacement for your half size G5RV
[ Hits: 4135 | Votes: 5 | Rating: 6 ]

Multi-band End-Fed Antenna - An excellent guide to homebrewing multi band end-fed antennas. The article, embed several drawings including diagrams and detailed pictures, illustrating the basic funcionality of end-fed antennas. The author gives some basic hints on how to build a half size antenna for 80 40 to 10 meters and a 6 meter to 40 meter configuration. It is also well described how to build the impedance transformer and the loading coils for lower bands.
[ Hits: 1105 | Votes: 6 | Rating: 4.5 ]

40m Compact 4-Square Antenna - The EA5AVL 40M Compact 4-Square Antenna was designed to provide excellent DX communications on the 40m band, utilising readily available components and be relatively easy to construct
[ Hits: 1133 | Votes: 3 | Rating: 10 ]

A Dual Band VHF/UHF J Pole - This antenna provides continuous coverage of the 2 metre (144-148MHz) and 70cm (430-450MHz) bands and is an excellent choice for base station use.
[ Hits: 2284 | Votes: 17 | Rating: 6.83 ]
Homemade 2M/440 J-Pole Antenna - A 2m 70cm Dual Band J-Pole antenna for 35 USD. An excellent performing J-Pole type antenna, constructed from readily available materials.
[ Hits: 1049 | Votes: 5 | Rating: 3.4 ]

Homemade Magnetic loops antennas by F5RDS - Basic magnetic loop antenna examples and loop aerials theory explained. This article inclued some interesting tricks on building magnetic loop antennas and an usefull excell sheet to help compute magneti loop antennas calculating power efficiency from 10 to 40 meters band
[ Hits: 257 | Votes: 0 | Rating: 0 ]

2m Band Moxon - Moxon is a rectangle shaped directional antenna, originally designed by Les Moxon G6XN. There are couple of advantages of using this antenna. It is small in size, Easy to mast, Balanced to 50 Ohms, Near 1:1 SWR, Excellent Front to Back (F/B) ratio, Large bandwidth
[ Hits: 583 | Votes: 1 | Rating: 6 ]

Hula Loop MW DX Antenna - An excellently presented article on the design and construction of a medium wave DX Antenna
[ Hits: 1240 | Votes: 1 | Rating: 1 ]

DX HOLIDAY - DX-HOLIDAY is a DX holiday and DXpedition holiday-style dedicated website which provides excellent information on a range of pertinent topics such as: organize a DX-holiday in remote area, organize DXpedition holiday-style with your family, booking and negotiating with hotels, obtaining a foreign amateur radio license, rent a radio shack and antennas during your holiday, travel documentation & money matters, health, emergency, and weather issues
[ Hits: 314 | Votes: 2 | Rating: 2.5 ]

Guide to D-star, DMR, Fusion - An introduction to digital modes DMR Fusion and D-Star. This excellent article will guide you to learn differences between these digital modes by evaluating costs, ease of use and programaming, extendability and more characteristics.
[ Hits: 327 | Votes: 2 | Rating: 8 ]

FT8 Operating Guide - Weak signal HF DXing - An excellent guide to operating FT8 mode available in English, German and Czech that cover several aspects of the FT8 operations. Includes and exaustive guide to how configure FT8 software, how to conducto a QSO and how to operate DXPeditions in FT8 F/H mode. Covers aspects of FT4 contesting operations and interfacing with logging programs
[ Hits: 396 | Votes: 2 | Rating: 4 ]

Equipment for portable HF operations - An excellent and comprehensive article on portable HF operations with attention on selecting proper equipment
[ Hits: 455 | Votes: 0 | Rating: 0 ]
HF Portable Ops Solar Powered - An interesting article about amateur radio portable operations with excellent pictures. Setup includes a 60 watts of portable solar power being controlled by a charge controller, and a batteries powering an FT-897D.
[ Hits: 433 | Votes: 1 | Rating: 10 ]

Replacing the battery of the Yaesu DVS-2 memory recorder - After a few years the lithium battery cell from the Yaesu DVS-2 will be exhausted. To replace the battery in the future there is a more easy way, than replacing it with the same type of battery as installed in the DVS-2.
[ Hits: 313 | Votes: 1 | Rating: 8 ]
DIY LiFePO4 Battery power for Amateur Radio portable operations - An interesting article about a homemade LiFePO4 battery pack for ham radio operations, a 10Ah LiFePO4 based on Headway 38120 Cells
[ Hits: 278 | Votes: 0 | Rating: 0 ]
Homemade LiFePO4 battery power for Amateur Radio - Using portable battery power is always a challange when operatin amateur radio in sota oprations. This article is about implementing lithium iron phosphate cells (LiFePO4) in ham radio portable operations.
[ Hits: 253 | Votes: 0 | Rating: 0 ]

The Grand G3YUH Morse Key Project - How to build an excellent key for very little cost with homebreweing description and detailed pictures
[ Hits: 1319 | Votes: 6 | Rating: 5.5 ]

Noise Canceller Project - This project was intended to accompany the stealth antenna project. Author want to see how effective a noise canceller could be in reducing the background noise floor when attic / stealth antennas are being used.
[ Hits: 709 | Votes: 0 | Rating: 0 ]
HF Band QRM/QRN Noise Canceller - This noise canceller is suitable for use with a receiver or transceiver and works on all modes, including AM, FM and SSB.
[ Hits: 1652 | Votes: 5 | Rating: 8.2 ]
VK5TM Noise Canceller - Noise Canceller kit originally developed about 1989 by G4WMX and GW3DIX and improved by DK9NL and DG0KW.The VK5TM Noise Canceller is another version of the design, with the HF Vox circuit removed and a couple of other minor changes, including the use of SMD JFETs and a double-sided pcb.
[ Hits: 476 | Votes: 1 | Rating: 10 ]