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An antenna rotator (or antenna rotor) is a device used to change the orientation, within the horizontal plane, of a directional antenna. Most antenna rotators have two parts, the rotator unit and the controller. The controller is normally placed near the equipment which the antenna is connected to, while the rotator is mounted on the antenna ...
VK3IL - Multiband end-fed 80-10m antenna - NEC2 model file of a "MyAntennas EFHW-8010" multi-band antenna. Other retail books (such as The ARRL Antenna Book, Marcel De Canck's Advanced Antenna Modeling, and others) also include antenna model files. Most free or retail NEC software packages include an 'example' folder containing antenna model files.
A key innovation in the SCR-270 was a transmit-receive (TR) switch. The SCR-268 searchlight control radar, which shared much technology with the SCR-270, used separate antennas for transmit and receive, For maximum antenna gain at a given size it is desirable to use the same antenna for both functions. One obstacle is the need to protect the ...
RCA Spectra 70 Model 46. The RCA Model 70/46 (1967) [12] is a modified version of the 70/45 with an added capability for virtual memory. Advertisements for this computer as a timesharing machine referred to it as the Octoputer. [13] Programs can run in either 70/45 mode—without virtual memory—or in 70/46 mode with virtual memory enabled.
(Reuters) -U.S. President-elect Donald Trump on Thursday said he was appointing former PayPal Chief Operating Officer David Sacks as his "White House A.I. & Crypto Czar," another step towards ...
The Vault CRM Bot embeds a large language model of the customer's choice to enable a wide range of context-driven tasks to be accomplished. Voice control will leverage Apple Intelligence for a ...
See today's average mortgage rates for a 30-year fixed mortgage, 15-year fixed, jumbo loans, refinance rates and more — including up-to-date rate news.
An antenna control unit utilizes the resulting difference signal to select the optimum signal strength for the particular step of the search pattern. This system is particularly applicable to extremely high frequency communication channels (86 GHz and above) which are subject to atmospheric distortion and noise .