Dave Oldridge wrote:

...
Lots of times. My CW error-correcting hardware is excellent, is always on,
and conveniently located in my head.

But you're missing my point. A modem is always an analog device. And if
it's listening on a frequency with a loud signal on it, then it can be
saturated by that signal. I've not seen many that could copy the
heterodyne. Mostly they just stop giving any recovery at all.


There are very rugged modems. Most people just accept the modem which
was included with their computer. A cheap modem implemented, almost
totally, in software; these can exhibit poor performance.

You get what you pay for, and like I say, BPL is a developing
technology; or, in other words, problems must be found before they can
be fixed. Your KW+ signal will be a great aid, possibly, in that
direction ...

Having worked in the software/algorithm/data-compression aspects of
modems, I have experienced high levels of line noise on standard modems
which needed new techniques to solve ... Although I have seen many
instances where line noise is at such levels even speech is horrible,
and data xmission slows to a crawl, there are few instances where it
becomes absolute zero--baring the physical disconnection of the line.

If you are inducing interference of a noticeable level in a persons
home/business that is noticeable, it will be more than just noticeable
on the BPL modem!

Regards,
JS