Homebrew Rf Power Meter

Pictures of a homebrew 2 4 ghz rf power meter swr meter.

Homebrew rf power meter. No muss no fuss. Diamond gsv 1200 15 ampere power supply. It is possible to make high frequency rf power swr standing wave ratio meters using homebrew directional couplers and other easily available parts. Hf 60w power amplifier irf840.

This second port will read rf power from approximately 20dbm 0dbm. It is even possible to use the directional coupler and detector diodes from an old cellular phone. Although i bought the book and respect the copyright of the authors i will share my own schematic here. Or you can do the simpler thing find an rf ammeter.

Alinco ep 3010 30 ampere power supply. 144 mhz 100w power amplifier. I had a 0 2a weston mounted in a mini box with very short leads to the so 239 jacks. 50mhz 100w power amplifier.

Hf 10w to 200w class e f power amplifier. Swr power meter digital forward reflected sensor digital display rf in rf out x x directional coupler envelope detectors digital processor. 144 mhz 125w power amplifier. Diamond sx 400 140 520 mhz swr meter.

Performance swr measurement 1 0 1. Video looking at the final circuit configuration and software for the pwr swr meter. Daiwa cn 801h 1 8 200 mhz swr meter. Rf power meter switch 5 4 2012.

I found it accurate even at 2 meters. 2 4 ghz rf power meter swr meter. Hf 10w power amplifier. Using ohm s law you can determine power output into a dummy load.

Performance power measurement homebrew tandem match bird coupled line digital pride breune diode type dependent 5 4 2012. Homebrew swr and power meter first of all this swr meter in this article is not exactly homebrew as i based the circuit on the schematic in the excellent book arduino projects of amateur radio. 4 kw hf power amplifier solid state. 14 mhz 20w linear power amplifier.

My homebrew rf power meter has 2 inputs. 3 mhz to 30 mhz 80w power amplifier. 50mhz 350w power amplifier 2xblx15. 1 using a 1n4148 peak detector and 2 using a 1n34a diode as the peak detector.

S meter vu meter with led. A power meter with wide frequency range and dynamic range and relatively accuracy is a key factor to make home brew activity feel professional and get a beginning rf measurement lab one of reason is most of rlb return loss bridge type measurement need detect a low power signal might 40dbm 10dbm.