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The Water Cooler
General Discussion
NSFW - Open mic night at L.A. Sheriff's Dept.
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<blockquote data-quote="bigfug" data-source="post: 3484603" data-attributes="member: 4864"><p>No, the base systems transmit on the same frequency as the mobiles. Most base stations are actually mobiles installed into a console. Thats one reason its hard to over ride a transmission, as they are on the same frequency, you would have to kill the repeater it was hitting. Now a days it can be done as everything is on one frequency, and "channels" and talkgroups are used, with everything controlled by servers, pc's, etc. , all IP based. So technically a transmission could be over ridden, as the transmitting ID can be terminated by the controller.</p><p></p><p>In your case of the stuck button, equipment failure, which is the only time I have seen a mic stuck hot (less than a handful of times that I know of in a decade). Maybe keyed up repeatedly for a few seconds at at time, but not indefinitely hot. In that case, the dispatcher could only have the officer turn the radio off until they can come see us and we fix it, but again, because of redundancy, that message can be sent electronically via CAD. And trust me, you dont want to give dispatchers that ability. Most of our calls of "system issues" are actually operator (dispatcher) error.</p><p></p><p>Our system does something similar to the Micore system in that it can "scan" a handul of "channels". You basically program your favorite channels on your handheld or mobile (have to be in the same talkgroup) and you'll hear all the transmissions on those channels. Your home "channel/frequency" has priority if someone is transmitting on it as the same time as one of your other programmed channels. So frequencies dont necessarily "over ridden" so much as the radio picks which one to listen to. No matter the system, you can't listen or transmit on more than one frequency (channel) at a time, and no more than one radio at a time. We even have an app that allows a user to transmit and recieve on our system now. Mostly command staff, in the event they need to monitor traffic when out of town.</p></blockquote><p></p>
[QUOTE="bigfug, post: 3484603, member: 4864"] No, the base systems transmit on the same frequency as the mobiles. Most base stations are actually mobiles installed into a console. Thats one reason its hard to over ride a transmission, as they are on the same frequency, you would have to kill the repeater it was hitting. Now a days it can be done as everything is on one frequency, and "channels" and talkgroups are used, with everything controlled by servers, pc's, etc. , all IP based. So technically a transmission could be over ridden, as the transmitting ID can be terminated by the controller. In your case of the stuck button, equipment failure, which is the only time I have seen a mic stuck hot (less than a handful of times that I know of in a decade). Maybe keyed up repeatedly for a few seconds at at time, but not indefinitely hot. In that case, the dispatcher could only have the officer turn the radio off until they can come see us and we fix it, but again, because of redundancy, that message can be sent electronically via CAD. And trust me, you dont want to give dispatchers that ability. Most of our calls of "system issues" are actually operator (dispatcher) error. Our system does something similar to the Micore system in that it can "scan" a handul of "channels". You basically program your favorite channels on your handheld or mobile (have to be in the same talkgroup) and you'll hear all the transmissions on those channels. Your home "channel/frequency" has priority if someone is transmitting on it as the same time as one of your other programmed channels. So frequencies dont necessarily "over ridden" so much as the radio picks which one to listen to. No matter the system, you can't listen or transmit on more than one frequency (channel) at a time, and no more than one radio at a time. We even have an app that allows a user to transmit and recieve on our system now. Mostly command staff, in the event they need to monitor traffic when out of town. [/QUOTE]
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NSFW - Open mic night at L.A. Sheriff's Dept.
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