low band

257 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 ]

Delta Loop DX Antenna for 40 meters band - A monoband delta loop antenna for the 7 MHz. This vertically polarized DX Antenna is a full wavelength sngle side antenna and has a total length of 42.3 meters (137,1 inch) Can be easily setup with a flag pole or fishing pole as center top mast. For optimal performance lower side should be at 2 meter above the ground. This antenna offers a low radiation angle and 1 DB Gain.
[ Hits: 433 | Votes: 3 | Rating: 6.33 ]

Vertical Dipole Array - A simple and awesome wire monoband antenna, very usefull for portable and dxpeditions usage, consist of two elements, a driver and the reflector. This endfed halfwave gives a very low take off angle and is very suited for chasing DX.
[ Hits: 1256 | Votes: 2 | Rating: 6.5 ]

Shortened EFHW Antenna 80-10m ^updated - A shortened multiband antenna, about 23m long, for 80m - 10m bands with a low SWR (<1.3) on 80m and 40m, and <3 till 10m. Bandwith on 80m is 300kHz
[ Hits: 4133 | Votes: 11 | Rating: 6.18 ]

15m Four Square antenna - A 21 MHz Four Square Beam Antenna This popular antenna for the lower bands, can also work well on 15 meters, QST Article
[ Hits: 1358 | Votes: 0 | Rating: 0 ]

K9AY Loops - A low-band receiving antenna that can fits in a 30-foot circle
[ Hits: 542 | Votes: 2 | Rating: 5 ]

5 Band Telescopic Vertical Antenna - 5 Band 1/4 wave Telescopic Antenna. The 20m to 10m, antenna is simple and cheap to make, and has a performance that matches commercial antennas but at cost considerably lower. The design was purposely based on a telescoping fibre glass fishing rod as this allows it to be easily stowed away in the car.
[ Hits: 3608 | Votes: 3 | Rating: 9.33 ]

A Low Cost Multi Band - W3DZZ trapped multi-band antenna, exposed in this practical wireless article
[ Hits: 2058 | Votes: 3 | Rating: 7 ]
W3DZZ - a classic dipole heavily modified, - An easy to build multiband trapped dipole that can work well on short low bands for skip contacts
[ Hits: 2330 | Votes: 9 | Rating: 7.56 ]

The K2AV FCP Single Wire Folded CounterPoise - Efficient Low Band Counterpoise for Restricted Circumstances Loss Avoidance Opportunities and Techniques for the Low Bands The short and linear FCP was designed to reduce ground losses from inadequate radial systems beneath inverted L and other vertical antennas.
[ Hits: 283 | Votes: 0 | Rating: 0 ]

V84SAA Brunei DX Pedition 2019 - International DXpedition To The Sultanate Of Brunei February 6th To February 18th, 2019 A low-bands-focused DXpedition
[ Hits: 173 | Votes: 1 | Rating: 10 ]
V84SAA Sultanate of Brunei - February 6th to February 18th, 2019, International DXpedition to the Sultanate of Brunei, A low-bands-focused DXpedition
[ Hits: 93 | Votes: 0 | Rating: 0 ]

ON4KST Chat - The low band, VHF, UHF and microwave chats
[ Hits: 381 | Votes: 0 | Rating: 0 ]

Broadband Hamnet Network - The availability of low-cost, ready made 2 GHz hardware and the project at Broadband Hamnet dot org, make it unthinkable that the amateur radio community NOT take advantage of broadband ad-hod TCP/IP networks!
[ Hits: 297 | Votes: 1 | Rating: 1 ]

What is NBEMS - Narrow Band Emergency Messaging Software is an open source system that allow send and receive data.
[ Hits: 410 | Votes: 0 | Rating: 0 ]
NBEMS Presentation - Download a presentation on how to get started with Narrow Band Emergency Messaging Software (NBEMS) the open source suite that allow you to send and receive data from your PC.
[ Hits: 426 | Votes: 0 | Rating: 0 ]

DUAL - Antenna and ham equipment manufacturer in Serbia. The Dual company has been producing antennas for more than 25 years focusing on wide bandwidth, designs that work equally well in all weather conditions, very low SWR and superior G/T, F/B and F/S ratios
[ Hits: 400 | Votes: 2 | Rating: 6 ]

Call Book Log 3 - A ham radio logging solution. Built on mysql/maria db and php, it allows you to host a log on a web server and have easy access to viewing editing deleting backing up and restoring the log. Allows everyone to view the log and a central admisitrative section which when logged into allows you to add and edit and remove entries. It features an easy to setup page, run the setup page and enter the required values and your set to start logging. It is primarily mobile friendly, easy on bandwidth and should work well in any browser. If entering a contact that you have worked before it will show the last 5 dates and times of that station.
[ Hits: 859 | Votes: 3 | Rating: 10 ]

RF Front End Protector - If You are using a separate receive antennas then you need a good protection circuit to eliminate the possibility of blowing out the receiver front-end while using these auxiliary receive antennas specially on low bands.
[ Hits: 178 | Votes: 0 | Rating: 0 ]

70cm Mini Transverter - A low cost, low power microwave transverter so that you can operate easily on 70cm band even with a HF or VHF transceiver
[ Hits: 394 | Votes: 0 | Rating: 0 ]