Why Did I Start Testing Radios (page 2)?
20 kHz Dynamic Range
test showed that in a multi-
conversion radio it was only testing the radio’s front end
If the first IF was 6 - 20 kHz wide, be it at 5 MHz, 9 MHz
or 45 - 70 MHz, the radio would overload in a pile up.
20 kHz test showed
hint of the problem
Place test signals close together so they pass
1st IF Filter
Close-in dynamic range numbers were
drastically worse than the wide-spaced numbers &
correctly approximated a CW pileup