On Fri, 08 Jul 2005 14:43:52 GMT, Dan Conti wrote:




interestingly enough , standing right nearby one of these mobile
commo suvs , using a Opto R-10 receiver , NONE of the
transmissions ( you can see them talking to each other and
surely some of those antennae represent packet style
node networks of some sort ) will register on the r-10.
probably spread spectrum, wi-fi or UWB based equipment
in the suv.

Unless you had their specific frequencies programmed into your R-10,
you're not gonna hear a thing.

If you were standing there with a 246 or 396 in close call mode, you
would get hits on their frequencies.



Dan

I'm speaking of the " OPTOELECTRONICS " R10 nearfield
surveillance receiver. ( the one with " intercept " on the front
panel )
the model before the R11 which was locked out on the cell bands.
the r11 had a kewler looking front panel and equipment feel .
( the more desirable r10 was NOT locked out on cell freqs )

this communications intercept surveillance receiver had NO frequency
programming keys on it ,
only the ability to " lock out " certain undesired freqs. it existed
a " decade " before the " close call " models you mention above.
it has a range ( depending on the antenna and filters on the input )
of 3 to 5 miles and more. ( depending on the power of the
transmitter too )

these extremely desirable " pro quality " nearfield surveillance
" signal intercept " receivers are still seen occasionally on ebay
but sell for many 100s of dollars nowadays.

this has nothing to do with the programmable ICOM IC-R10.


the opto R10 or R11 will blow the doors off the current so called
" close call " receivers and it " does not " find ANY of the
equipment in the mentioned comms vehicle. ( nor would
any of the , less sophisticated , close call rigs )

dunno about the " digital " signal intercept receiver made
by opto called the " digital explorer " ...... haven't tried it
near one of those comms suvs yet. maybe " it " could capture
some comms since it ( unlike MOST other equipment )
can " see " digital signals.


k.................