Secure unless someone has a base station that uses an identical chipset
and forces it into receive mode. This does require some tinkering, but
it can be done. Don't kid yourself, the FHSS and DSSS technology used by
cordless phone manufacturers are not designed for security, they are
just basic chipsets with a minimum of support components. And the
advertised 64 bazillion security codes have nothing to do with the
sequence, it's only for the off hook negotiation (aka: line seizure) and
ring triggering on an inbound call. Remember, a lot of those SS units
still have a 'channel' button, and there's only 10 to 25 'channels' on
these things. That would point to a limit of 10 to 25 spread patterns.
Splurge the $19 at Target and buy a popular unit and dig into it,
there's not a lot in there.

B.



SteveJ wrote:
I have two wireless phones and NO scanner can receive one is a frequency
hopper, using digital modulation that covers all of the 902-928 MHz band
five times a second, and the other one is a spreadsprectrum system, sounds
like noise when received on a analog receiver in the wide or narrow band
mode. In other words forget about receiving it.




"Jim" wrote in message
...

Scan 902 to 904...

wrote in message
groups.com...

I know it is not legal but can a regular scanner that covers 900 mhz
listen to cordless phone conversations?

My point is a scanner would not pick them up this waas the topic.

"bob" wrote in message
.. .
Secure unless someone has a base station that uses an identical chipset
and forces it into receive mode. This does require some tinkering, but it
can be done. Don't kid yourself, the FHSS and DSSS technology used by
cordless phone manufacturers are not designed for security, they are just
basic chipsets with a minimum of support components. And the advertised 64
bazillion security codes have nothing to do with the sequence, it's only
for the off hook negotiation (aka: line seizure) and ring triggering on an
inbound call. Remember, a lot of those SS units still have a 'channel'
button, and there's only 10 to 25 'channels' on these things. That would
point to a limit of 10 to 25 spread patterns. Splurge the $19 at Target
and buy a popular unit and dig into it, there's not a lot in there.

B.



SteveJ wrote:
I have two wireless phones and NO scanner can receive one is a frequency
hopper, using digital modulation that covers all of the 902-928 MHz band
five times a second, and the other one is a spreadsprectrum system,
sounds like noise when received on a analog receiver in the wide or
narrow band mode. In other words forget about receiving it.




"Jim" wrote in message
...

Scan 902 to 904...

wrote in message
egroups.com...

I know it is not legal but can a regular scanner that covers 900 mhz
listen to cordless phone conversations?

Yes it was, and you are correct; no consumer grade scanner has any chance of
rendering intelligible signals from a DSSS nor FHSS cordless phone.

[On a side note: There are some high end units (most AOR scanners, or some
Alinco units, for example) that will receive wideband and narrowband F3
transmissions. In my experience, most RatShack stuff gets pretty deaf as you
approach 1Ghz. The same goes for the Alinco DJ-X10, at 1Ghz and above it's
more or less useless, at 1.4Ghz, forget it, the input sensitivity approaches
the one volt mark. Nice scanner for the lower bands, lots of useful
features, but practically useless in the Ghz range.]




My point is a scanner would not pick them up this was the topic.



"bob" wrote in message
.. .
Secure unless someone has a base station that uses an identical chipset
and forces it into receive mode. This does require some tinkering, but it
can be done. Don't kid yourself, the FHSS and DSSS technology used by
cordless phone manufacturers are not designed for security, they are just
basic chipsets with a minimum of support components. And the advertised 64
bazillion security codes have nothing to do with the sequence, it's only
for the off hook negotiation (aka: line seizure) and ring triggering on an
inbound call. Remember, a lot of those SS units still have a 'channel'
button, and there's only 10 to 25 'channels' on these things. That would
point to a limit of 10 to 25 spread patterns. Splurge the $19 at Target
and buy a popular unit and dig into it, there's not a lot in there.

B.