frequency
Radio Frequency Antennas Advances and Applications by Kevin Merriman
Radio frequency antennas are the interface between electric currents moving in metal conductors and radio waves propagating through space. During transmission, a radio transmitter provides an electric current to the antenna’s terminals, and the antenna releases the energy from the current as radio signals. During reception, an antenna picks some of the power of a radio wave in order to create an electric current at its terminals, which is transferred to a receiver to be amplified. Antennas are indispensable components of all radio equipment. It is a collection of conductors,Read More
Surplus ProSoft Technology RLX2-IFH9E-A Industrial Frequency Hopping 900-928MHz
ProSoft Technology RLX2-IFH9E-A Industrial Frequency Hopping 900-928MHz Ethernet, (1) 10/100 Base-T, RJ45 Connector, (1) DB9 Female (Serial Tunneling and Encapsulation), (1) RP-SMA Antenna Connector, 9-24V DC Power, Provides Virtual Peer-To-Peer Packet Switching and Network Optimization Using Advanced Smart Switch Technology. One Surplus in Non-Original Box ProSoft RLX2-IFH9E-A, Industrial Frequency Hopping 900MHz Ethernet. THE BOX IS NOT ORIGINAL. The Serial Number in the pictures has been altered for privacy purposes. We are NOT Authorized Distributor of this item. We sell pre-owned SURPLUS and USED equipment ONLY. Manufacturers’ warranties DO NOT apply.Read More
GP4 Shortwave Ground Plane Antenna Vertical GP Antenna 4 Bands Working Frequency
Welcome to my shop. GP4 Shortwave Ground Plane Antenna Vertical GP Antenna 4 Bands Working Frequency. GP4 Ground Plane Antenna 4-Band GP Antenna 7/14/21/29M Boasts Excellent Performance High Efficiency Description. GP4 4-band 1/4-wavelength shortwave GP antenna features working frequency of 7, 14, 21, 28/29M. It is suitable for long-term use outdoors and on the roof. No need to replace the coil to switch the frequency. Exquisite notch technology and superior electrical structure performance makes it a high-efficiency GP antenna. It is simple to lay ground net (more than 6 groundRead More
GP4 Shortwave Ground Plane Antenna Vertical GP Antenna 4 Bands Working Frequency
Welcome to my shop. GP4 Shortwave Ground Plane Antenna Vertical GP Antenna 4 Bands Working Frequency. GP4 Ground Plane Antenna 4-Band GP Antenna 7/14/21/29M Boasts Excellent Performance High Efficiency Description. GP4 4-band 1/4-wavelength shortwave GP antenna features working frequency of 7, 14, 21, 28/29M. It is suitable for long-term use outdoors and on the roof. No need to replace the coil to switch the frequency. Exquisite notch technology and superior electrical structure performance makes it a high-efficiency GP antenna. It is simple to lay ground net (more than 6 groundRead More
Proxlink PL2 Wireless Broadcast Network Topolgy Radio Frequency Technology Modem
Proxlink PL2 Wireless Broadcast Network Topolgy Radio Frequency Technology Modem. Pre-owned in great condition with normal wear & tear. ProxLink wirelessly interconnects devices with RS-232 interfaces. Any devices that are interconnected through a standard RS-232 interface and cable at 19.2 Kbps or lower can be wirelessly connected with ProxLink. ProxLink is a wireless replacement for the RS-232 cable. ProxLink is resistant to interference and noise from other devices operating in the 902-928MHz ISM band. Multiple ProxLink can be operated simultaneously in the same facility. It comes with radio module, antenna,Read More