E Trigger

[AnimalControl626]

Does LA COunty PD have an E Trigger on their radios? Also, on a side note: Why doesn't LASD want their deputies to not hear the oher deputies talking to the dispatcher? Thanks

 

[Mick]

Busy tone explained

SocalScan's Yahoo group is where this was explained:
http://groups.yahoo.com/group/socalscan/message/51375

"The LASD radio system basically operates in "half-duplex" mode where-in the
mobiles can not hear each other over the "downlink" transmitter. This system
has been utilized for about as long as I can remember (a very long time) and is
very traditional for the Sheriff's Dept. The reason is that it is thought that
the dispatchers can maintain better control over situations as they unfold,
especially those of an emergent or high adreneline nature. If ANY Deputy
requests, the dispatcher can activate the system into full duplex repeat mode at
their console with the push of a button. During normal operations, the
dispatcher basically "parrots" what the transmitting unit says so the other
units know what and where things are happening. The dispatchers are highly
trained and experienced in this proceedure and it generally works very well.

The "beep" tone is used, as has been noted previously, by the dispatcher to
indicate that A: there is a unit transmitting on one of the input channels the
dispatcher has up on the console ( often up to 3 or more different station
districts at the same time) and therefore ALL other units must not transmit
unless it's emergent. This is also the reason you may hear the same dispatcher
talking on more than one dispatch channel at the same time (all transmitters in
all the station districts that are up on the console are ALL put into simulcast
transmission whenever they key the push to talk switch). B: The dispatcher is
busy with something (running a plate, telephone to a station desk, etc) and is
not listening critically at that moment. C: the "busy" tone can be activated
to come on automatically whenever there is a unit transmitting on an input
channel.

Hope this helps to clairify the query.
Gene Thielman
Communications Technician
Los Angeles County Sheriff
Radio Services Section"

More at this thread:
http://www.radioreference.com/forums/showthread.php?p=204454#post204451

 

[dgower]

LA County PD has an emergency button on their portables and mobiles that switches the radio to a talkgroup called OPS EMER, and sends an emergency signal to all 10 HRC dispatch consoles at once. It also keys the radio into transmit and holds the mic open for a short period.

 

[AnimalControl626]

SocalScan's Yahoo group is where this was explained:
http://groups.yahoo.com/group/socalscan/message/51375

"The LASD radio system basically operates in "half-duplex" mode where-in the
mobiles can not hear each other over the "downlink" transmitter. This system
has been utilized for about as long as I can remember (a very long time) and is
very traditional for the Sheriff's Dept. The reason is that it is thought that
the dispatchers can maintain better control over situations as they unfold,
especially those of an emergent or high adreneline nature. If ANY Deputy
requests, the dispatcher can activate the system into full duplex repeat mode at
their console with the push of a button. During normal operations, the
dispatcher basically "parrots" what the transmitting unit says so the other
units know what and where things are happening. The dispatchers are highly
trained and experienced in this proceedure and it generally works very well.

The "beep" tone is used, as has been noted previously, by the dispatcher to
indicate that A: there is a unit transmitting on one of the input channels the
dispatcher has up on the console ( often up to 3 or more different station
districts at the same time) and therefore ALL other units must not transmit
unless it's emergent. This is also the reason you may hear the same dispatcher
talking on more than one dispatch channel at the same time (all transmitters in
all the station districts that are up on the console are ALL put into simulcast
transmission whenever they key the push to talk switch). B: The dispatcher is
busy with something (running a plate, telephone to a station desk, etc) and is
not listening critically at that moment. C: the "busy" tone can be activated
to come on automatically whenever there is a unit transmitting on an input
channel.

Hope this helps to clairify the query.
Gene Thielman
Communications Technician
Los Angeles County Sheriff
Radio Services Section"

More at this thread:
http://www.radioreference.com/forums/showthread.php?p=204454#post204451

thanks, that clarifies my question on that. Great info there, thanks Mick

 

[AnimalControl626]

LA County PD has an emergency button on their portables and mobiles that switches the radio to a talkgroup called OPS EMER, and sends an emergency signal to all 10 HRC dispatch consoles at once. It also keys the radio into transmit and holds the mic open for a short period.

Thanks, is the E trigger, the little orange button I see on their speaker mics? Also, anyone know where i can find the "OPS Emer' group? thanks dgower!

 

[dgower]

Yes the orange button on the shoulder mics is the emergency button. There is another one on the radio itself, and one on the vehicle radio control head.

This is pretty accurate (from the RR database). Instead of "Emergency Trigger" its named "OPS EMER" in the radios.

COUNTY POLICE (LACOPS) - Formerly SAFETY POLICE (not since 1998)Talkgroups

DEC AFS Mode Alpha Tag Description Tag
1681 13-021 A LAPD Access
1682 13-022 A LASD Access
1760 13-120 A Operations
1761 13-121 A Emergency Trigger
1762 13-122 A Information
1763 13-123 A Tactical 1
1764 13-124 A Tactical 2
1765 13-125 A Tactical 3
1766 13-126 A Tactical 4
1767 13-127 A Tactical 5
1768 13-130 A Tactical 6
1769 13-131 A Tactical 7
1770 13-132 A Tactical 8 Olive View Medical Center, Sylmar
1771 13-133 A Dispatch 1 Routine Dispatch
1772 13-134 A Dispatch 2 USC Med Center
1773 13-135 A Dispatch 3 HAR Med Center
1774 13-136 A Dispatch 4 MLK Outpatient Center

 

[AnimalControl626]

Yes the orange button on the shoulder mics is the emergency button. There is another one on the radio itself, and one on the vehicle radio control head.

This is pretty accurate (from the RR database). Instead of "Emergency Trigger" its named "OPS EMER" in the radios.

COUNTY POLICE (LACOPS) - Formerly SAFETY POLICE (not since 1998)Talkgroups

DEC AFS Mode Alpha Tag Description Tag
1681 13-021 A LAPD Access
1682 13-022 A LASD Access
1760 13-120 A Operations
1761 13-121 A Emergency Trigger
1762 13-122 A Information
1763 13-123 A Tactical 1
1764 13-124 A Tactical 2
1765 13-125 A Tactical 3
1766 13-126 A Tactical 4
1767 13-127 A Tactical 5
1768 13-130 A Tactical 6
1769 13-131 A Tactical 7
1770 13-132 A Tactical 8 Olive View Medical Center, Sylmar
1771 13-133 A Dispatch 1 Routine Dispatch
1772 13-134 A Dispatch 2 USC Med Center
1773 13-135 A Dispatch 3 HAR Med Center
1774 13-136 A Dispatch 4 MLK Outpatient Center

Is all that heard on the 800MHZ trunking EDACS system? What are the numbers under DEC and AFS for?