12 meter band

75 links

Trapped Dipole for 12 and 17 Meters - A small sized and very cheap antenna project that allow you to work on WARC bands with a total gain very close to the dipole in both bands. On 12 meters is a normal dipole, while on 17 is a trapped dipole. Article in Italia
[ Hits: 887 | Votes: 1 | Rating: 1 ]

30m Half -Size Rotary Dipole - A rotary dipole antenna for 30 meters band. Each arm is about 12.5 ft and is constructed from telescoping fibreglass flag/fishing poles and short lengths of aluminium tubing. Two short lengths of glass-fibre rod were used to insulate the arms from the supporting hardware.
[ Hits: 198 | Votes: 0 | Rating: 0 ]

Dipole for 60 meter band - Short dipole for 60m tropical band ...a total of 12 meters of wire, with a diameter of about 2 mm, divided into four sections.
[ Hits: 686 | Votes: 6 | Rating: 7.67 ]

End-Fed antenna for 17 and 12 meters - Article about an end-fed anntenna for the 17 and 12 WARC Bands. 30 meters is not included in this project. This antenna includes a 14 windings unun impedance transformer using a FT-140-43 ferrite toroid, that should be enought for a 100W PEP.
[ Hits: 541 | Votes: 3 | Rating: 4.33 ]

Testing Dipole vs Indoor Magnetic Loop Antenna - Testing performances of indoor antenna. A comparison of a magnetic loop antenna vs a classic wire dipole done using wsprlite on 30 meters band.
[ Hits: 856 | Votes: 2 | Rating: 5.5 ]

3 band J-Pole Antenna - Pictures of a 2 meter, 220, 440 copper J-Pole antennas
[ Hits: 2611 | Votes: 12 | Rating: 6.08 ]

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 ]

3 Element Quad for 50 MHz - A 14.12 dBi gain three elements cubical quad antenna for the six meters band. This Quad Antenna design page include a MMA model available to download and dimensions for each element.
[ Hits: 46 | Votes: 1 | Rating: 3 ]

A simple Attic Antenna for HF bands - This simple antenna was installed on the attic. Antenna was matched with help an Automatic ATU in 40, 30, 20, 17, 15, 12 and 10 meter amateur Bands. The Antenna worked satisfactory on the above mentioned bands.
[ Hits: 317 | Votes: 7 | Rating: 6 ]

Hustler 6BTV mod - 6BTV (or 5BTV or 4BTV) mod for 12 and 17 meter bands, how to make a 7BTV or 8BTV or 9BTV, easy and cheap
[ Hits: 755 | Votes: 0 | Rating: 0 ]

YAGI Antenna for 24 Mhz - A 2 elements yagi beam for 12 meters band with liear load
[ Hits: 421 | Votes: 1 | Rating: 2 ]
3 Element Yagi Antennas for 144 MHz SSB-CW - A great and efficient monoband VHF portable antenna. The article consist of two version of a 12.5 Ohm 3 elements yagi beam antenna plans for the two meter band, a full sized and a shortened version expecially designed for the SSB and CW on 144 MHz.
[ Hits: 427 | Votes: 4 | Rating: 8 ]

NA4RR HexBeam - NA4RR manufacture a six band hexagonal beam antenna for ham radio, covering 6, 10, 12, 15, 17, and 20 meter.
[ Hits: 157 | Votes: 0 | Rating: 0 ]

SW-3B QRP CW RTX - The SW-3B is a Three-band CW QRP transceiver, Weight 180g, output power 5W at 12v, 2W at 9v, works on 40 30 and 20 meters band
[ Hits: 121 | Votes: 0 | Rating: 0 ]