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289 links

160m Inverted Delta Loop - IK1MNJ
This 160 meter Delta Loop antenna is made of Hard drawn copper wire AWG 10 ...

[ Hits: 115 | Votes: 0 | Rating: 0 ]

Bent-end dipole antennas - kk4obi
Discussion about laterally bent end dipoles Bent by percentage of length and fine tuned by ...

[ Hits: 123 | Votes: 0 | Rating: 0 ]

8010 Enfed Antenna - F5NPV
With this antenna the coverage is 80 40 20 15 and 10 meter band without ...

[ Hits: 142 | Votes: 0 | Rating: 0 ]
TEFV Terminated End Fed Vee Antenna - VU3DXR
The Terminated End Fed Vee Antenna TEFV is a travelling wave antenna with constant current ...

[ Hits: 190 | Votes: 2 | Rating: 6.5 ]

RF Choke with Bifilar Windings - rjbono
This article presents an RF Choke featuring an 11 bifilar turn winding of 14 house ...

[ Hits: 87 | Votes: 0 | Rating: 0 ]

Open-Folded W8JK Antenna for HF - F5NPV
Originally designed by John Kraus W8JK in about 1940 this antenna has some interesting properties ...

[ Hits: 141 | Votes: 1 | Rating: 3 ]

Homebrew an OCF Off-Center Fed Dipole Antenna - W5ODJ
This type of antenna is a popular antenna design as the performance is very good ...

[ Hits: 198 | Votes: 3 | Rating: 6.67 ]

Dual-Band X-Frame Shortwave RX Loop Antenna - KD6RF
A dual band X frame wire antenna made using 4 turns for response down to ...

[ Hits: 148 | Votes: 1 | Rating: 10 ]

The Weird Antenna Wire End Effect - VA3KOT
A half wave wire that is tuned for resonance on 80m will NOT be resonant ...

[ Hits: 95 | Votes: 0 | Rating: 0 ]

A Versatile SOTA Antenna Tuner - KX0R
This is a detailed technical piece intended mostly for makers and more creative activators who ...

[ Hits: 265 | Votes: 2 | Rating: 10 ]
Portable T-Match ATU - vk1nam
Homebrew Portable T Match ATU VK1AD Portable T Match Antenna Tuner ATU mounted in a ...

[ Hits: 104 | Votes: 1 | Rating: 8 ]
Homebrew Z-Match Transmatch - WB3GCK
For this project I decided to try my hand at building a Z Match tuner ...

[ Hits: 133 | Votes: 0 | Rating: 0 ]

The UnTenna - KC8AON
Multiband random wire unun unbalanced to unbalanced for use with rigs with builtin autotuners ...

[ Hits: 237 | Votes: 0 | Rating: 0 ]
The Squid Pole Wire Antenna Re-visited - VK4ADC
The author explores enhancing the performance of a 7 meter fiberglass squid pole wire antenna ...

[ Hits: 92 | Votes: 0 | Rating: 0 ]

Wolf River Coil - Wolf River Coil
Vertical Base Replacement Coil Wolf River Coil build quality antenna coils that are easy to ...

[ Hits: 167 | Votes: 0 | Rating: 0 ]

WIFI Remote FUCHS ATU for EndFed Antenna - F5NPV
The Fuchs Antenna tuner with a resonant circuit as a coupler The Fuch Antenna Tuner ...

[ Hits: 117 | Votes: 0 | Rating: 0 ]

Analyzing SSB Signal Quality in CQ WW Contest - OH6LI
This article investigates SSB signal quality during the CQ WW 2015 SSB contest It highlights ...

[ Hits: 42 | Votes: 0 | Rating: 0 ]

Yaesu FT-891 Go-Box for POTA - VA3KOT
This article documents the author s latest go box build for outdoor ham radio operations ...

[ Hits: 199 | Votes: 0 | Rating: 0 ]

JUNIOR-2 ARDF receiver - DL5NBZ
The JUNIOR 2 presented here is a competition direction finder receiver that is easy to ...

[ Hits: 90 | Votes: 0 | Rating: 0 ]

An introduction to YIG Tuned Oscillators - MicroSource
The YIG Tuned Oscillator YTO is the only direct signal source to provide multi octave ...

[ Hits: 35 | Votes: 0 | Rating: 0 ]