hf radio
637 links - and 12 categories
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Antennas : Baluns : 1 to 1 Balun- Simple HF Baluns for 50/75 ohm coax
- Show diagrams, winding methods and tables of some 1:1 and 4:1 baluns for 1.8 - 30 MHz suitable for use up to 200W (400W peak) on systems using 50 or 75 ohm coaxial cable input where SWR should not exceed 1.6:1.
[ Hits: 15202 | Votes: 25 | Rating: 4.32 ]
- The simple 144/440 copper pipe J
- A simple dual band VHF UHF jpole antenna Projects by Dale Kubichek
[ Hits: 8362 | Votes: 18 | Rating: 8 ]
- VHF/UHF Quad Antenna
- Article by N6JSX on homebrewing quad antennas for VHF and UHF.
[ Hits: 4738 | Votes: 4 | Rating: 5.25 ]
- Rhombic antenna dimensions
- Rhombic Antenna dimensions for HF and VHF bands by N6JSX
[ Hits: 4884 | Votes: 6 | Rating: 4.33 ]
- HF antenna for high rise dwellers
- If you have ever tried transmitting on HF from a tall block of apartments, where it's just not possible to erect a substantial aerial system, then this article is for you
[ Hits: 5014 | Votes: 5 | Rating: 7.92 ]
- Ham Radio Tower at N0HR
- Ham Radio Tower Project at N0HR. Includes site plan, escavation, tower construction, HF antennas, grounding and lightning protection, coax and more.
[ Hits: 2962 | Votes: 2 | Rating: 8 ]
- A Portable Antenna Matching Unit
- A small HF antenna tuner project for qrp operations. Includes circuit diagrams pictures and test results by GW4ALG
[ Hits: 15342 | Votes: 7 | Rating: 5.14 ]
- Vertical trapped antenna
- An HF multiband trapped antenna in french
[ Hits: 1443 | Votes: 1 | Rating: 9 ]
- US Band Plan by ICOM
- ICOM USA Amateur Radio HF VHF/UHF band plan updated to 2008, include a Common Country prefixes in PDF Format
[ Hits: 3767 | Votes: 9 | Rating: 6 ]
- EA7HFG Javier
- Amaterur radio blog from Cordoba Spain
[ Hits: 303 | Votes: 1 | Rating: 10 ]
- The K0NR Weblog
- Stuff about amateur (ham) radio, especially VHF/UHF, QRP, portable and mountaintop operating
[ Hits: 306 | Votes: 0 | Rating: 0 ]
- British Columbia FM Communications Association
- Amateur Radio organization specializing in VHF, UHF, and microwave communications.
[ Hits: 734 | Votes: 1 | Rating: 10 ]
- G4UCJ 6 meter report and recordings
- Recent six meters report from UK with recording of some QSOs
[ Hits: 501 | Votes: 1 | Rating: 9 ]
- Duplexers.eu
- We produce duplex filters for 6 m, 2 m, 70 cm, and 23 cm band but also for HF bands.
Sella and produce products for Ham Radio Repeaters.
[ Hits: 1899 | Votes: 1 | Rating: 1 ]
- 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 ]
- 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: 1931 | Votes: 8 | Rating: 8.38 ]
- Is HF propagation reciprocal
- Some test circuits using the ACE-HF System Simulation & Visualization software, about reciprocal propagation on HF bands by NW7US
[ Hits: 520 | Votes: 1 | Rating: 7 ]
- Amateur ( HAM )Radios Comparison Charts
- Comparison chart of most popular VHF UHF amateur radio transceivers
[ Hits: 4392 | Votes: 4 | Rating: 7.75 ]
- ICOM Soundcard Interface
- IC820H or other Icom Radios Soundcard interface for VHF EME use by DF9CY
[ Hits: 1495 | Votes: 0 | Rating: 0 ]
- 1.8-54 Mhz Low pass filter
- An easy to make HF low pass filter form high power
[ Hits: 3833 | Votes: 3 | Rating: 4.67 ]
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