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Re: [IRCA] Propagation and DX differences
At 04:06 7/11/2008, you wrote:
>vel / splatter increased since the 80's, and if so,
>> by how much?
>
>I think it has decreased. I remember overmodulation being rampant because
>audio processing was still quite crude and unfiltered. Audio was fed in up
>to 15KHz, and not filtered at all.
I guess the important point is how relatively intense the splatter is closer to the carrier, Craig. Using the SDR-14, I have seen what you mean about the sub-10 kHz sidebands, though some cut off right at 10 kHz it seems, but that passband still includes the 9 kHz channels we're hunting for. If all the modulation is concentrated into (say) +/- 6 kHz would that mean worse interference to overseas DX than historic stations spread over more than +/-10 kHz?
best wishes,
Nick
*****************************
Nick Hall-Patch
Victoria, BC
Canada
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