sonda w.cz do V640
UHF i mikrofale:
http://www.mikrofale.iq24.pl/default.asp?grupa=160341&temat=112019
na kf jest prościej:
http://www.sp5jnw.sem.pl/technika/pommocyhtm/pommoc.pdf

Germanowe kontra Schottky:
http://www.cliftonlaboratories.com/diodes_for_rf_probes.htm
"In any particular operation, the sensitivity differences amongst these three diode types may or may not be important. Operated into a sensitive digital voltmeter, all three diode types would likely be usable. Operating into a 50 microampere moving coil meter, when measuring lower level signals, in contrast, a germanium diode may be the only usable alternative.

If I were designing a diode-based wattmeter, however, intended for reasonably power levels and voltages, where flat frequency response is essential, a Schottky diode is the best choice."

ciekawe porównanie
http://www.bentongue.com/xtalset/27MeaXSD/27MeaXSD.html


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