phenoman
Member
- Joined
- Jun 15, 2004
- Messages
- 8
Hey. I've not bought a scanner as yet but one thing about trunk tracking puzzles me. Here's my view of how it works (a Motorola Type 2 system):
Someone hits PTT. His radio transmits a request to the control computer. The computer responds with an available channel number on the control channel. The requesting radio shifts in frequency to the designated channel, along with all other radios in the talkgroup. The initiator proceeds to transmit on the frequency and is heard by everyone tuned in. When he finishes transmitting, the channel is open and all the radios in the talkgroup return to monitoring the control channel.
Now, what puzzles me is from a scanning perspective. Suppose I'm trunk tracking with any Uniden scanner. I'm monitoring the control channel in control chan only mode. After the control computer assigns a temporary frequency to the talkgroup, my radio automatically shifts to monitoring the channel and I hear the transmitter talking to those in his group.
What happens if another user in a different talkgroup decides to request a channel during the time I am listening to the first group? Since I am not watching the control channel, am I completely oblivious to this fact and will miss the entire transmission of the second group?
(I'm sorry this is getting long.)
For example, suppose I want to monitor the Fort Lauderdale PD,
http://www.radioreference.com/modules.php?name=TRSDB&sid=217
on talkgroups 17680, 17712 and 17744. If a member of one of those groups requests a channel while I am listening to another group, will I miss the second group's communication entirely?
Ok, that's it. Thanks for reading all of that, I like to be clear (if not concise
Someone hits PTT. His radio transmits a request to the control computer. The computer responds with an available channel number on the control channel. The requesting radio shifts in frequency to the designated channel, along with all other radios in the talkgroup. The initiator proceeds to transmit on the frequency and is heard by everyone tuned in. When he finishes transmitting, the channel is open and all the radios in the talkgroup return to monitoring the control channel.
Now, what puzzles me is from a scanning perspective. Suppose I'm trunk tracking with any Uniden scanner. I'm monitoring the control channel in control chan only mode. After the control computer assigns a temporary frequency to the talkgroup, my radio automatically shifts to monitoring the channel and I hear the transmitter talking to those in his group.
What happens if another user in a different talkgroup decides to request a channel during the time I am listening to the first group? Since I am not watching the control channel, am I completely oblivious to this fact and will miss the entire transmission of the second group?
(I'm sorry this is getting long.)
For example, suppose I want to monitor the Fort Lauderdale PD,
http://www.radioreference.com/modules.php?name=TRSDB&sid=217
on talkgroups 17680, 17712 and 17744. If a member of one of those groups requests a channel while I am listening to another group, will I miss the second group's communication entirely?
Ok, that's it. Thanks for reading all of that, I like to be clear (if not concise