Duplexers
Duplexers and diplexers
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Schematics for a VHF UHF duplexer -
VHF UHF diplexer by G8MNY -
Duplexers for dual band radio are usually high pass filter and low pass filter combined in the same box. This circuit is a design within a cost of US$10. -
Wire antennas requires a special coupling network to properly couple my 50 ohm coax to the antenna's high impedance (5000 ohms) -
Schematics of antenna couplers in french -
From Wikipedia, the free encyclopedia -
This DIPLEXER separates 2m from 70cm on the same coax cable, and allows to use 2 antennas over the same cable and permits transmission on one band and simultaneous receiption on the other band by hb9abx -
Standard diplexer design is based on singly-terminated Butterworth filters. -
A full duplex antenna system for 144 432 Mhz -
Learn a little bit about how duplexers work and building your own. -
Diplexer is a passive device, a special filter circuit that seperates 2 different bands, not to be confused with the duplexer that usually separate 2 different frequencies on the same band. -
Both Watts and Volt-Amperes are units of measurement for electrical power. Learn what is the difference -
Building a cavity resonator for 144 MHz -
Make yourself a Diplexer