Watch out all you Bay Area'ins with a Radar Dector, it's now useless!
01-19-2007, 01:45 PM
#17
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You could never "trust" negative readings on a radar detector anyway, since a lot of tickets are written by cops pacing you with no radar on at all.
So now there is an increased chance of getting caught speeding, hurrah for the land of the free.
I won't be putting my V1 on e-bay anytime soon.....
So now there is an increased chance of getting caught speeding, hurrah for the land of the free.
I won't be putting my V1 on e-bay anytime soon.....
01-19-2007, 01:48 PM
#18
how come no one uses the CHiPs detector?
since all CHP cars have a built-in repeater for their radio (from the trunk to their handheld radios), you can easily detect the frequency they are using (which is publicaly available in numerous areas).
and that is like a mile or so range, easily detecting them way before the LiDAR hits ya...
since all CHP cars have a built-in repeater for their radio (from the trunk to their handheld radios), you can easily detect the frequency they are using (which is publicaly available in numerous areas).
and that is like a mile or so range, easily detecting them way before the LiDAR hits ya...
01-19-2007, 02:01 PM
#20
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Laser requires them to be stopped, so radar is still going to be their weapon of choice when cruising the backroads, like I said- I'm not getting rid of my V1, just sticking a little closer to the SL and paying a bit more attention.
01-19-2007, 02:12 PM
#21
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Originally Posted by salvator_rizzo
well i would imagine it would take awhile to equip all officers with that, for now im sure we are ok for awhile
what is a good radar detector to get that is reasonably priced?
what is a good radar detector to get that is reasonably priced?
01-19-2007, 02:15 PM
#22
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Ah, the Passport and V1 protect against LIDAR. You won't get any advanced notice though. If you get shot they got your speed, unless..... You get one of these, available for current passport users as well.
http://www.escortradar.com/zr3.htm
http://www.escortradar.com/zr3.htm
01-19-2007, 02:17 PM
#23
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Originally Posted by ldivinag
how come no one uses the CHiPs detector?
since all CHP cars have a built-in repeater for their radio (from the trunk to their handheld radios), you can easily detect the frequency they are using (which is publicaly available in numerous areas).
and that is like a mile or so range, easily detecting them way before the LiDAR hits ya...
since all CHP cars have a built-in repeater for their radio (from the trunk to their handheld radios), you can easily detect the frequency they are using (which is publicaly available in numerous areas).
and that is like a mile or so range, easily detecting them way before the LiDAR hits ya...
01-19-2007, 02:36 PM
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46.What is a "CHiPs detector"? What's the complete story on CHP radios?
from Chucko@charon.arc.nasa.gov (Chuck Fry):
That's right. Many CHP cars are equipped with repeaters so that when the
officers get out of their cars, their walkie-talkies need only reach the car
instead of the base station. The CHiPs Detector (tm) takes advantage of the
fact that the CHiPpies rarely turn off the repeater when they're IN the car.
Note that the CHP may change this frequency at any time, although they're
not likely to.
The disadvantages are that you just know at least one CHiPpie is in the
area, not how close, what they're doing, or whether they're after you; and
there's no signal transmitted from the repeater when the base station is
silent. So it's hardly foolproof.
morris@grian.cps.altadena.ca.us (Mike Morris) posted on 12 oct 1991:
The following info was compiled from several sources, none of which have
1st-hand knowledge of the new CHP radios, but what I have been able to put
together seems to agree. So with that caveat, ...
The older Motorola Micor mobile radios had "mobile extenders" by GE. These
extenders were 1/4 watt transmitting units that repeated the audio from the
42mhz CHP mobile radio to 154.905mhz. The mobile extender time-sliced the
channel to transmit for roughly 9/10 second and receive for 1/10 of a second
to see if the officer was replying. Hence the "yakyakyak-chuff-yakyakyak-
chuff-yakyakyak-chuff-..." sound of the repeated traffic on the 154mhz
channel. There was a writeup of the single-channel time-slicing technique
in a ham radio magazine back in the early 70s, and the technique has taken
off tremendously. It has mostly been used to allow single-channel
radio-to-telephone interconnects called simplex autopatches (because they
use one channel - a "simplex" channel.)
Anyway the mobile extender technique works very well, and allows the officer
to use a relatively low power high-band hand-held to communicate with the
dispatcher via the > 100w low-band mobile radio in his/her patrol car with
very little trouble.
A low-band hand-held would have to use a 6' antenna to be resonant, or a
"rubber duckie" over a foot long. And the hand-held couldn't have enough RF
power to reach the dispatch center in 99% of the state. Hence a 150mhz
handheld (where a 18" antenna is the norm, and a "rubber duck" is < 9") and
a mobile extender.
A bit of history:
The bid for mobile radios was won by Motorola around 10 years ago. The
mobile extenders were an afterthought, and that bid/contract was won by GE.
The user interface was a simple on/off switch, and the state radio shop
people mounted it in the Motorola control head. It was a toggle switch
labeled with a Dymo tape "repeat enable/disable" (or "extender on/off" or
"portable on/off").
The average officer soon discovered that leaving the extender switch in the
"on" position worked just fine. They turned off the hand-held to shut off
the "repeater", not realizing that the mobile side of the extender was still
on. Probably 99% of the CHP officers left it on for the entire shift. With
the almost constant activity on the CHP dispatch channels, this 154.905mhz
vehicle transmitter behaved like a 1/4w beacon, providing between 1/4 to 1
mile notification of the location of a patrol car.
Now the spoiler: The CHP is replacing (has replaced here in my area) _all_
of their Motorola Micor/GE extender radio packages. The new radios are all
GE, with CHP-designed control groups. (The state Red Cross got 90% of the
radios for the 47.42 - 47.62 freqs. A few of them went to other state
agencies, like the Office of Emergency Services). The 1991 Southern
California edition of the "Police Call" frequency listing has a nice writeup
on the CHP-designed control groups, as I remember. They even got 90% of it
right.
The new design forces the officers to disable the extender when they are in
the patrol car. Listening to 154.905 while mobile now just tells you where
a CHP car is _stopped_, with the officer out of the car, as opposed to
before when it would tell you where a stopped or a moving one was...
Here is the frequency map of the CHP hand-helds as I have it.
F1: 154.905 with the primary tone. (NOTE 1)
F2: same 1st alternate tone
F3: same 2nd alternate tone
F4: 154.920 (CLEMARS 1) - Base side of CLEMARS
F5: 154.935 (CLEMARS 2) - Mobile/Portable CLEMARS
F6: 156.075 (CALCORD) (NOTE 2)
F7: 155.475 (CLEMARS 3 / NALEMARS) (NOTE 3)
Abbreviations: CLEMARS: California Law Enforcement Mutual Radio System.
CALCORD: California Coordination - a statewide "on-scene"
channel
NALEMARS: National Law Enforcement.... A federal version
of CLEMARS.
Note 1: With the old hand-helds (2 freqs - 154.905 and 154.920) there was no
way that two units from different areas (i.e. different dispatch
frequencies) could have their extenders operational at an out-of-vehicle
scene -- when an officer transmitted, both mobiles would be brought up.
the remainder of Note 1 explanation is from the post of scotto@ipars.cts.com
(Scott O'Connell) on 14 oct 1991:
The receiver of the extender has an attenuator making a low wattage HT
usable for only a short distance (typically less than 50yds). To make sure
there is only one extender being used within close proximity each vehicle
extender sends a short burst tone to see if others are active. If it is
within range of another active extender it doesn't turn on at all. The HT
is then using the other vehicle radio (the one that was already turned on).
Now for the PL explanation. There are three channels on CHP HT's that
relate directly to the extender. Channel 1 (also called PP or Person to
Person) does not transmit any tone nor does it decode. It is meant for HT
to HT use. Channel 2 has a subaudible tone on transmit allowing the officer
to talk to dispatch. (ie, transmits on the input freq of the lowband radio)
Channel 3 has a different subaudible tone on transmit allowing the officer
to talk to other officers. (ie, transmits on the output of the lowband
radio) All channels are carrier squelch on the receive so that PP can be
heard regardless of other traffic.
I hope this clears up why there are three 154.905 channels on the HT's.
Note 2: 156.075 is also the Ship TX side of Marine channel 61 (paired with
160.675 Ship RX). I understand some re-thinking of the use of this
frequency is going on. It seems to be pretty useless in coastal areas.
Note 3: 155.475 I have been told that this channel has multiple PL tones. I
have also been told that the CHP handheld is 10 freq - capable. Maybe this
channel has multiple appearances like F1-F2-F3. More info is needed.
Another rehash of the low band channels is in the works since LA County
Sheriffs is moving to 800 or 900 mhz. The CHP has acquired all of the 39mhz
LASO channels and is slowly moving to change all of the low band dispatch
operation to full repeat. My sources do not know if the mobiles will be
transmitting on 39mhz and listening on 42mhz or vice versa. It does not
make much difference to the GE mobiles since they cover the full 30-50 mhz
just fine (as opposed to the old Micors that covered 42mhz to 50mhz only.
Does anybody have any info?
47.But aren't most citizens prohibited from using mobile radio scanners?
from parnass@ihlpy.att.com (Bob Parnass, AJ9S) on 4 nov 91:
Anyone interested in US state and federal laws relating to radio monitoring
should check out Frank Terranella's "Listener's Lawbook." It is available
for $9.95 (plus $2 UPS) from Grove Enterprises, 140 Dog Branch Road,
Brasstown, NC 28902.
I am not an attorney, but I have a 1989 issue of Frank's earlier work,
"ANARC Guide to US Monitoring Laws," and will summarize from that book.
California monitoring laws may have changed, but here are the laws of
interest to Californians as they were in 1989:
- Penal Code s 632.5 makes it a crime to maliciously monitor cellular radio
telephone calls.
- Penal Code s 635 outlaws the manufacture, sale, and possession of devices
primarily or exclusively designed or intended for eavesdropping on
cellular phones.
- Penal Code s 636.5 makes it illegal to divulge any police radio service
communication you hear on your radio to a criminal or to assist in the
commission of a crime or help a criminal evade the law.
In addition, Californians are subject to the same federal monitoring laws as
other Americans. The most important one to remember is the Electronic
Communication Privacy Act of 1986 which makes it a crime to listen to
cellular or mobile radio telephones or common carrier paging, and outlaws
descramblers.
Section 705 of the Communications Act of 1934 makes it illegal to divulge
the contents of what you hear on your radio to others unless the
conversation was on ham radio or the citizens' band.
from Chucko@charon.arc.nasa.gov (Chuck Fry):
That's right. Many CHP cars are equipped with repeaters so that when the
officers get out of their cars, their walkie-talkies need only reach the car
instead of the base station. The CHiPs Detector (tm) takes advantage of the
fact that the CHiPpies rarely turn off the repeater when they're IN the car.
Note that the CHP may change this frequency at any time, although they're
not likely to.
The disadvantages are that you just know at least one CHiPpie is in the
area, not how close, what they're doing, or whether they're after you; and
there's no signal transmitted from the repeater when the base station is
silent. So it's hardly foolproof.
morris@grian.cps.altadena.ca.us (Mike Morris) posted on 12 oct 1991:
The following info was compiled from several sources, none of which have
1st-hand knowledge of the new CHP radios, but what I have been able to put
together seems to agree. So with that caveat, ...
The older Motorola Micor mobile radios had "mobile extenders" by GE. These
extenders were 1/4 watt transmitting units that repeated the audio from the
42mhz CHP mobile radio to 154.905mhz. The mobile extender time-sliced the
channel to transmit for roughly 9/10 second and receive for 1/10 of a second
to see if the officer was replying. Hence the "yakyakyak-chuff-yakyakyak-
chuff-yakyakyak-chuff-..." sound of the repeated traffic on the 154mhz
channel. There was a writeup of the single-channel time-slicing technique
in a ham radio magazine back in the early 70s, and the technique has taken
off tremendously. It has mostly been used to allow single-channel
radio-to-telephone interconnects called simplex autopatches (because they
use one channel - a "simplex" channel.)
Anyway the mobile extender technique works very well, and allows the officer
to use a relatively low power high-band hand-held to communicate with the
dispatcher via the > 100w low-band mobile radio in his/her patrol car with
very little trouble.
A low-band hand-held would have to use a 6' antenna to be resonant, or a
"rubber duckie" over a foot long. And the hand-held couldn't have enough RF
power to reach the dispatch center in 99% of the state. Hence a 150mhz
handheld (where a 18" antenna is the norm, and a "rubber duck" is < 9") and
a mobile extender.
A bit of history:
The bid for mobile radios was won by Motorola around 10 years ago. The
mobile extenders were an afterthought, and that bid/contract was won by GE.
The user interface was a simple on/off switch, and the state radio shop
people mounted it in the Motorola control head. It was a toggle switch
labeled with a Dymo tape "repeat enable/disable" (or "extender on/off" or
"portable on/off").
The average officer soon discovered that leaving the extender switch in the
"on" position worked just fine. They turned off the hand-held to shut off
the "repeater", not realizing that the mobile side of the extender was still
on. Probably 99% of the CHP officers left it on for the entire shift. With
the almost constant activity on the CHP dispatch channels, this 154.905mhz
vehicle transmitter behaved like a 1/4w beacon, providing between 1/4 to 1
mile notification of the location of a patrol car.
Now the spoiler: The CHP is replacing (has replaced here in my area) _all_
of their Motorola Micor/GE extender radio packages. The new radios are all
GE, with CHP-designed control groups. (The state Red Cross got 90% of the
radios for the 47.42 - 47.62 freqs. A few of them went to other state
agencies, like the Office of Emergency Services). The 1991 Southern
California edition of the "Police Call" frequency listing has a nice writeup
on the CHP-designed control groups, as I remember. They even got 90% of it
right.
The new design forces the officers to disable the extender when they are in
the patrol car. Listening to 154.905 while mobile now just tells you where
a CHP car is _stopped_, with the officer out of the car, as opposed to
before when it would tell you where a stopped or a moving one was...
Here is the frequency map of the CHP hand-helds as I have it.
F1: 154.905 with the primary tone. (NOTE 1)
F2: same 1st alternate tone
F3: same 2nd alternate tone
F4: 154.920 (CLEMARS 1) - Base side of CLEMARS
F5: 154.935 (CLEMARS 2) - Mobile/Portable CLEMARS
F6: 156.075 (CALCORD) (NOTE 2)
F7: 155.475 (CLEMARS 3 / NALEMARS) (NOTE 3)
Abbreviations: CLEMARS: California Law Enforcement Mutual Radio System.
CALCORD: California Coordination - a statewide "on-scene"
channel
NALEMARS: National Law Enforcement.... A federal version
of CLEMARS.
Note 1: With the old hand-helds (2 freqs - 154.905 and 154.920) there was no
way that two units from different areas (i.e. different dispatch
frequencies) could have their extenders operational at an out-of-vehicle
scene -- when an officer transmitted, both mobiles would be brought up.
the remainder of Note 1 explanation is from the post of scotto@ipars.cts.com
(Scott O'Connell) on 14 oct 1991:
The receiver of the extender has an attenuator making a low wattage HT
usable for only a short distance (typically less than 50yds). To make sure
there is only one extender being used within close proximity each vehicle
extender sends a short burst tone to see if others are active. If it is
within range of another active extender it doesn't turn on at all. The HT
is then using the other vehicle radio (the one that was already turned on).
Now for the PL explanation. There are three channels on CHP HT's that
relate directly to the extender. Channel 1 (also called PP or Person to
Person) does not transmit any tone nor does it decode. It is meant for HT
to HT use. Channel 2 has a subaudible tone on transmit allowing the officer
to talk to dispatch. (ie, transmits on the input freq of the lowband radio)
Channel 3 has a different subaudible tone on transmit allowing the officer
to talk to other officers. (ie, transmits on the output of the lowband
radio) All channels are carrier squelch on the receive so that PP can be
heard regardless of other traffic.
I hope this clears up why there are three 154.905 channels on the HT's.
Note 2: 156.075 is also the Ship TX side of Marine channel 61 (paired with
160.675 Ship RX). I understand some re-thinking of the use of this
frequency is going on. It seems to be pretty useless in coastal areas.
Note 3: 155.475 I have been told that this channel has multiple PL tones. I
have also been told that the CHP handheld is 10 freq - capable. Maybe this
channel has multiple appearances like F1-F2-F3. More info is needed.
Another rehash of the low band channels is in the works since LA County
Sheriffs is moving to 800 or 900 mhz. The CHP has acquired all of the 39mhz
LASO channels and is slowly moving to change all of the low band dispatch
operation to full repeat. My sources do not know if the mobiles will be
transmitting on 39mhz and listening on 42mhz or vice versa. It does not
make much difference to the GE mobiles since they cover the full 30-50 mhz
just fine (as opposed to the old Micors that covered 42mhz to 50mhz only.
Does anybody have any info?
47.But aren't most citizens prohibited from using mobile radio scanners?
from parnass@ihlpy.att.com (Bob Parnass, AJ9S) on 4 nov 91:
Anyone interested in US state and federal laws relating to radio monitoring
should check out Frank Terranella's "Listener's Lawbook." It is available
for $9.95 (plus $2 UPS) from Grove Enterprises, 140 Dog Branch Road,
Brasstown, NC 28902.
I am not an attorney, but I have a 1989 issue of Frank's earlier work,
"ANARC Guide to US Monitoring Laws," and will summarize from that book.
California monitoring laws may have changed, but here are the laws of
interest to Californians as they were in 1989:
- Penal Code s 632.5 makes it a crime to maliciously monitor cellular radio
telephone calls.
- Penal Code s 635 outlaws the manufacture, sale, and possession of devices
primarily or exclusively designed or intended for eavesdropping on
cellular phones.
- Penal Code s 636.5 makes it illegal to divulge any police radio service
communication you hear on your radio to a criminal or to assist in the
commission of a crime or help a criminal evade the law.
In addition, Californians are subject to the same federal monitoring laws as
other Americans. The most important one to remember is the Electronic
Communication Privacy Act of 1986 which makes it a crime to listen to
cellular or mobile radio telephones or common carrier paging, and outlaws
descramblers.
Section 705 of the Communications Act of 1934 makes it illegal to divulge
the contents of what you hear on your radio to others unless the
conversation was on ham radio or the citizens' band.
01-19-2007, 02:54 PM
#29
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Join Date: Jul 2006
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Originally Posted by ipozestu
Section 705 of the Communications Act of 1934 makes it illegal to divulge
the contents of what you hear on your radio to others unless the
conversation was on ham radio or the citizens' band.
the contents of what you hear on your radio to others unless the
conversation was on ham radio or the citizens' band.
01-19-2007, 02:58 PM
#30
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iTrader: (18)
Join Date: Aug 2004
Location: Subabrew Crew
Posts: 7,570
Car Info: Broken Subarus
This keeps looking better and better. For those with a passport it's only $499 installed.
http://www.passportsr1.com/zr3.htm
http://www.passportsr1.com/zr3.htm