ism band

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Dismantable Yagi for the bands 10-17m - 10-12-15-17 meter band yagi antenna
[ Hits: 5861 | Votes: 6 | Rating: 9.17 ]

Frame Antenna for 80m - A frame antenna for the 80 meters band, built to be folded and to be easy to be mounted and dismounted. This antenna is suitable for indoor and QRP use, bandwidth is just 10kHz and should be observed a proper distance while transmitting due to high voltage.
[ Hits: 729 | Votes: 5 | Rating: 8.8 ]

Some plain facts about multiband vertical antennas - There is considerable confusion as to what exactly a multiband vertical antenna is. The confusion concerns the method of feed, how much mismatch one can expect, how many radials are required, how the particular antenna is built for multiband use, plus some other points.
[ Hits: 1910 | Votes: 1 | Rating: 7 ]

Sector Antenna for Wifi - Homebrew Sector Antenna for Wifi ISM band (2,4GHz)
[ Hits: 4082 | Votes: 5 | Rating: 7 ]
Sector Antenna for Wifi - DIY a sector antenna for de Wifi 2,4GHz ISM band.
[ Hits: 1688 | Votes: 13 | Rating: 7.54 ]

WebSDR Wismar ^updated - This WebSDR is located in Wismar in the north of Germany JO53RV and operated by Frank Goehling DO7AX. There are four RTL2823U USB dongles with three Ham It UP up-converters for 80m/40m/20m and a RTL2832U for the 2m Band. The Antenna for 80/40/20m is a 84 meters Delta Loop.
[ Hits: 466 | Votes: 5 | Rating: 10 ]

SuperPass Company Inc. - Antenna manufactuer, Panel antennas, sector panel antennas, high gain for ISM, MMDS, PCS, GSM, CDMA, TDMA, 400MHz, 900MHz,1.9GHz, 2.4GHz, 2.7GHz, 3.5GHz,5.8GHz. Broadband wireless applications for ISP,ASP.
[ Hits: 1989 | Votes: 4 | Rating: 5.5 ]

Nearson Antennas - Founded in 1990, Nearson, Inc. has been providing our customers with exceptional value with the products and services we offer. VHF, UHF mobile radios, Cellular, PCS equipments as well as ISM band wireless data and WLAN applications.
[ Hits: 356 | Votes: 0 | Rating: 0 ]

Dawicom - Manufacture of microwave directional, omni directional, sector and multisector antennas with horizontal polarization for ISM band 2,4 GHz
[ Hits: 805 | Votes: 0 | Rating: 0 ]

40 MHz 8m Band Amateur Radio Exploration - The 8m ISM band, a unique frequency range between 10m and 6m, holds potential for amateur radio enthusiasts, yet it remains largely unallocated. This spectrum offers fertile ground for research and self-training. The author's experience with low-power transmissions and WSPR testing highlights the band's capabilities and the need for a narrow, speech-free amateur allocation to encourage experimentation. Discover the world of 8m ISM radio exploration and its future possibilities.
[ Hits: 76 | Votes: 1 | Rating: 8 ]

Propagation on 630 Meters and 2200 Meters - This is a theoretical look at propagation on 630-Meters and 2200-Meters using ray tracing software. It expands on the brief discussion in the ARRL Handbooks. The Earth's magnetic field affects 630-Meter and 2200-Meter band propagation. Lower ionization reduces absorption, aiding low-frequency propagation. Differences exist between bands, limited daytime sky-wave propagation. Sunrise/sunset show promise, yet mechanisms are unclear. Ducting possible at night in specific conditions. Negative ions enhance propagation. Inefficient antennas and high man-made noise are anticipated. Groundwave propagation is significant on 2200-Meters.
[ Hits: 38 | Votes: 1 | Rating: 10 ]

50 MHz F2 Propagation Mechanisms - In order to understand, however imperfectly, when the band will open, it is essential to have some understanding of why the band will open. Article by J. R. Kennedy K6MIO/KH6, Gemini Observatory Hilo, Hawaii
[ Hits: 111 | Votes: 1 | Rating: 8 ]