JB wrote:
"Michael Coslo" wrote in message
...
Ed Cregger wrote:
"HarryHydro" wrote in message

...
Hi Folks:
We've been having intermittent problems with 'interference' on
6.8 gig Alcatel radios and 5.8 gig (freeband) Proxim radios. I just
came into the radio shack, turned on the 'widow maker', a big heavy
spectrum analyzer, and instead of finding 5.8GHz internerence, I
found VERY strong pulses of RF around 4.9GHz. With my Blackberry about
5 feet away, the analyzer is showing a -10dbW (yes, 100mW) on a 2.4
gig antenna. It must be saturating the front ends. This Blackberry
comes through speakers with the preamps, and even televisions a good
10 feet away! It makes the computer monitor's screen shake almost
like the degauss! (when placed close). And, I suspect it does this
with it next to my head also, straight out the front and back of the
phone.
I was just looking at 4.9gig info and it seems to be allocated to
public safety. Is it also WiFi? The WiFi on this phone is off, at
least in the 'Connections', but that doesn't suprise me as laptops
seem to transmit on WiFi while connected to LAN. (Laptops' WiFi
knocks off the Proxim's, also)
Anyone ever scoped out the RF power from a Blackberry? Can this be
safe power levels?
Harry
------------

No power level is "safe". Safe enough is another matter and is subject
to
one's beliefs. There is very little science behind the establishment of
safe
levels.
True enough, but for the naysayers, I always issue the challenge of
taping a wire from a 5 watt RF source to their temple.

- 73 de Mike N3LI -

Why not go out in the sun without a hat?
Show me who has been harmed with a 5w Rf source taped to their head? (unless
they were sniffing exhaust or some other uncounted variable at the same
time)

Nope, that isn't the question. I neither confirm nor deny that long term
exposure to FR at frequencies near those used in microwave ovens is
harmful. Heck near field exposure may even be beneficial. I'm not saying
one way or the other.

The great irony is that people buy their children cell phones, and the
kids spend every free minute with them pressed to their head, but if we
were to run an experiment that exposed the kids to RF in an exact analog
of what they are doing anyhow, they would go nuts - as well they should!
Would you?

I'm looking for those who think it isn't dangerous to have the courage
of their convictions.

Haven't found any yet. They actually might be on to something, they just
don't know it.

- 73 de Mike N3LI -