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Directional Couplers SWR detectors for 145MHz-435MHz
Directional Couplers with RF output and DC output for 28MHz to 435MHz
post 03 May 2024
Swr Meter Links →
Wi-Fi SWR Meter
When building antennas for the Wifi band Like the 8dBi omni, a need for an easy way to check the antennas arose
WiFi SWR Meter
Misuratore di VSWR per le VHF-UHF-SHF, 2m, 70cm e 13cm delle bande Radio Amatori
Homebrew pwr-swr meter
xperiments with a tandem style swr coupler. the coupler uses two ft50-37 toroid cores, each with 10t
A little about SWR
No discussion about antennas would be complete without a word or two about SWR
A PIC16F876 based, automatic 1.8 - 60 MHz SWR/WATTmeter
The reading is quite precise in the whole HF band, up to 50 MHz, covering the power range from 5 to 120 W, therefore usable also in the QRP range
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When building antennas for the Wifi band Like the 8dBi omni, a need for an easy way to check the antennas arose
Misuratore di VSWR per le VHF-UHF-SHF, 2m, 70cm e 13cm delle bande Radio Amatori
xperiments with a tandem style swr coupler. the coupler uses two ft50-37 toroid cores, each with 10t
No discussion about antennas would be complete without a word or two about SWR
The reading is quite precise in the whole HF band, up to 50 MHz, covering the power range from 5 to 120 W, therefore usable also in the QRP range
Antenna switch arduino for icom IC-7300 A solution built around an arduino nano and one of the readily available four relay switching boards
50 MHz preamp Gain 26dB with the BFG135 Preamps for 144 and 430 MHz, for 50 MHz, the BFG135a is a cheap transistor and in my view rather strong. It is not easily damaged by static discharge or RF power. FG connection
30 Volt Computer Power Supply Stack A bonus was that i discovered that these did not need a standby load connected to the supply to keep them running just apply mains power and close the Start lead to ground