"Ron Baker, Pluralitas!" wrote in message
...

"Steve" wrote in message
oups.com...
On Jun 2, 7:03 pm, "Ron Baker, Pluralitas!" wrote:
"Ron Baker, Pluralitas!" wrote in
m...



"RF Caused By SDR-IQ" wrote in message
...
There is a new Yahoo group
http://groups.yahoo.com/group/RFICausedBySDRIQ/which may be of
interest

snipola


To me, the most striking thing about this little box is that it's
actually USB powered.

Yeah, USB is pretty cool.

So, it wouldn't require an independent power
supply or wall wart. That means you could run it off a battery powered
laptop after you lost power in a storm or something. I guess that's
kind of neat, but if it generates so much RFI that a new Yahoo group
has appeared just to discuss that fact, I wouldn't let this thing
anywhere near my house.

I'm skeptical about the OP. He never responded to any other
posts. I checked out that yahoo group when he first posted and
it had one member. Checking now, yahoo says the group
doesn't exist.

It is still probably healthy to maintain a little skepticism about
the SDR-IQ too. It reportedly has switchable lowpass
and highpass filters at 5 MHz and 15 MHz. It seems they
would cover most desensitization issues. The 5 MHz
highpass filter should prevent desense due to nearby lower
frequency broadcast band stations. But if you've got a ham
in the neighborhood who keys up on either 40 or 20 meters it
seems to me that could desense the SDR-IQ to
everything from 5 MHz to 15 MHz.

It's interesting.
I'll be watching the reviews and this group

Sounds very much like the front ends of most HF receivers. Both my Yaesu
FRG-7700 and my Kenwood HF transceiver have this type of rough bandpass
front end. I guess the days of tuned RF front ends have passed. I'm glad my
Grundig 600 has a preselector.