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The HB9XBG antenna is a vertical dipole antenna for short wave radio amateurs. It was developed by the Swiss radio amateur Walter Kägi, whose call sign HB9XBG is also the designation of the antenna. [1] During the test phase in 2020, HB9XBG built two vertical dipoles – one for the 20-metre amateur radio band and another for the 40-metre band.
Long-range Wi-Fi is used for low-cost, unregulated point-to-point computer network connections, as an alternative to other fixed wireless, cellular networks or satellite Internet access. Wi-Fi networks have a range that's limited by the frequency, transmission power, antenna type, the location they're used in, and the environment. [1]
The laptop's 15.6-inch screen is 5 percent larger than before and has a taller 16x10 aspect ratio. That gives the XPS 15 a bit more breathing room for juggling multiple windows and scrolling ...
The Dell XPS 14 (9440) was released in early 2024 and is a 14.5" laptop between the Dell XPS 13 and the XPS 16. It has thinner bezels, a seamless touchpad, and edge-to-edge keyboard with a touch function row, it offers two 14.5" display options, 1920x1200 LCD, or 3200x2000 OLED display, both at a refresh rate of 120Hz.
Based on the XPS 15 9570, 2-in-1 version based on a XPS 15 9575 chassis. Precision 5520 Jan 2017 1.78 kg (3.9 lb) USB-C Thunderbolt 3 Intel Core i5-7300HQ i5-7440HQ i7-7820HQ Xeon E3-1505M v6 CM238 64 GB (non-ECC) 2400 MHz DDR4 (2 slots) Intel HD 630 or P630 + Nvidia Quadro M1200 (4 GB GDDR5) Intel AC8265 or Qualcomm QCA6174A 1 x M.2 PCIe NVMe;
[5] (pp19.4–19.6) Thus, a better match of the antenna to the feed line, that is, a lower SWR, becomes increasingly important with increasing frequency, even if the transmitter is able to accommodate the impedance seen (or an antenna tuner is used between the transmitter and feed line).
The horizontal gain continues to increase up to a maximum of about 6.6 dBi at a length of five-eighths wavelength 5 / 8 λ so this is a popular length for ground wave antennas and terrestrial communication antennas, for frequencies where a larger antenna size is feasible. The input impedance drops to about 40 Ohms at that length.
Rig Expert Ukraine Ltd is a manufacturer of ham and PMR Two-way radio RF antenna analysis [1] and antenna tuning [2] equipment. The company was founded in 2003 and is headquartered in Kyiv , Ukraine .