Hi Stefan,
a HF SWM meter should work on 475 kHz, but most of these use a directional
coupler made of one or two pieces of wire parallel to the wire that carries
the TX signal.. This make them rather unsensitive at low frequencies. So you
will need significant more power to get a decent meter deflection.
A better option might be a bruene type or tamdem match coupler.
73, Rik ON7YD
________________________________________
Van: [email protected] [[email protected]]
namens Stefan Schäfer [[email protected]]
Verzonden: zondag 29 september 2013 19:34
Aan: [email protected]
Onderwerp: LF: HF SWR meters on MF?
Hi MF,
Did someone try to use a normal HF SWR meter on 630m? They are
specificated down to 1800 kHz of course but what about 472 kHz?
At least it would be good to get some indication that:
-There is some output power (e.g. when using an IC706)
-One is coming closer to resonance
-Impedance is/comes close to 50 Ohm
I'm supporting a new potential MF RX station with limited equipment (no
oscilloscope...)...
73, Stefan/DK7FC
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