I have 10W U/V transceiver.
Some of same transceiver users reports burnt after change 3rd party antenna.
-'Don't use 50 Ohm matched aftermarket antenna. This transceiver not matched 50 Ohm'
-'Burnt after even genuine Nagoya/Diamond antenna'
Almost RF designed 50 Ohm( Attenuators, Filters, Antennas, Couplers, ... ) But, How about in the wild?
I don't want spending times to trial/error(watching remotely mounted RF monitor & trimming antenna)
Any genius/proper methods of measuring over 30dB powered source impedance?
Objective: Measuring 10W transceiver's SMA port impedance -> Making custom load calibration kit for VNA -> Making good quality(matched) custom antenna for my transceiver.
Items what I have:
- RF Explorer(6G combo)
- SDR(Lime, RTL)
- miniVNA Tiny
- Oscilloscope(2D72)
- Several 50 Ohm load/terminator(1~15W)
- Several 30dB attenuator
- Kinds of directional coupler( , , Chinese cheap others... )
- VSWR meter for U/V band(SureCom)
Knowledge what I know:
- Audio output port's impedance measure with fine resistor & multimeter ( But, My transceiver is 1W even at LOW mode! I don't want let my transceiver burn without antenna )
- Basic skills of using VNA( Measuring load impedance of unknown antenna/filters, measuring reflection/attenuation )
