On 11 Jan 2023, at 14:03, John <ve3ips@...> wrote:
Borja
I have both the 7200 superhet and the 7300 SDR
The 7200 survived a brief mini tornado downpour whereas the 7300 would have gotten waterlogged
The 7200 seems to be a redone 718 but the 7300 has better blocking performance but tends to be a noise magnet and overloads more easily in a multi radio environment like field day.
Sorry, wrong :)
Look at the block diagram / schematics. The IC-7200 is a superhet SDR. Yes, it has traditional conversions, a roofing filter¡ But the
last conversion is a digital stage (at the time some called it IF-DSP) with full digital filtering and modulation/demodulation.
Remember, SDR means software defined radio, in which RF circuitry is replaced by digital signal processing. A SDR doesn?t need to be
necessarily a *full* SDR in which *all* of the signal processing is digital.
And no matter how good a SDR implementation is, it still needs a proper front end.
Anyway my point was, the IC-7200 is a good example of a transceiver that doesn?t look like a fragile thingie with a flashy screen. It can have
traditional controls and it can even be rugged. Actually, it can be made more rugged than a traditional set. The component count is much lower,
you save lots of coils that might be points of failure due to damp conditions, etc.
73,
Borja EA2EKH
Borja Marcos