portable sw radio
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Antennas : Feed Lines : Choke
- RF Choke with Bifilar Windings
- This article presents an RF Choke featuring an 11-bifilar turn winding of #14 house wire on a Fair-rite FT240-31 toroid. The choke is enclosed in a 3D-printed case from Thingiverse, though this may pose thermal concerns at higher power levels. With SWR concerns up to 30MHz, the author plans to employ two series chokes at the rig input for improved performance. This choke offers versatility for portable use, with potential mismatch resolution using an antenna tuner. Further testing is anticipated upon the arrival of new cables.
[ Hits: 85 | Votes: 0 | Rating: 0 ]
- M1IOS - Wonder Whip antenna and tuner
- M1IOS Wonder Whip antenna - The M1IOS Wonder Whip A 10 dollars QRP Portable Multiband Antenna for HF, VHF and UHF A variation on the Miracle Whip and Wander Wand. This antenna tuning unit will get your SWR really low on telescopic whips, mobile 3/8th antenna and long wires. A remarkable little tuner that really works!
[ Hits: 14505 | Votes: 24 | Rating: 9.04 ]
- Wire on the Ground: Portable Radio Success with Grasswire Antenna
- The author shares a unique experiment with a 200ft Grasswire antenna—laying wire directly on the ground. Despite inherent losses, the setup enables successful radio communication with a Kentucky station, highlighting the antenna's practicality for portable use with minimal power.
[ Hits: 97 | Votes: 0 | Rating: 0 ]
- F4FJP Eric , site radioamateur Francais
- Presentation station,contest,portable,techniques,bidouilles,balises,relais,radioamateurs,swl,technique,infos,reglementation
[ Hits: 472 | Votes: 0 | Rating: 0 ]
- Ni4L ANTENNAS & ELECTRONICS
- Ham radio antennas and electronics, specialized in 1/2 wave dipole, OCF dipole, windom, full wave loop, end fed, inverted L, portable end fed antenna, long wire, SWL antenna, fan dipole, multiband dipole, G5RV and military antennas.
[ Hits: 1608 | Votes: 7 | Rating: 8.86 ]
- EA2CW QRP Portable radio setup
- A portable QRP setup based on 20/30/40m QRP CW-only SW-3B transceiver, 2500mAh 5C LiPo battery (147g), Hands Free Nanokeyer
[ Hits: 105 | Votes: 0 | Rating: 0 ]
- Abc's of Shortwave portable radios
- An introduction to portable shortwave receivers and sw radio. What to look for in a good portable. Reviews of Sangean ATS505. Band info and frequecies.
[ Hits: 4205 | Votes: 8 | Rating: 6.75 ]
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