I'll leave the quality of this feed aside except to say that its apparent shortcomings may well be from a combination of the feed-provider's set-up and/or LAPD's own often less-than-ideal audio quality. I haven't had a chance to listen to this feed much lately
I don't follow your "logic". What do you mean by "dispo"? If the freq. of the cars and "mobile radio" are the same as dispatch, then we should hear the entire event, period!
In theory you're partially correct, but in (LAPD's) practice, that's not necessarily true at all, and in fact is almost guaranteed to
not happen regularly.
Since switching to a UHF repeater system in 1981-83, LAPD brass has required that all urgent and emergency calls, be multicast over a number of divisions' frequencies in addition to the "division of occurrence" frequency. While not precisely accurate in all cases, the general rule is that these "hot" calls are to be broadcast on the div of occurrence, of course, as well as on the dispatch frequencies of all adjacent patrol divisions, and the concerned and adjacent bureaus' "traffic divisions" frequencies, as well as on the citywide "Air/K9/Hotshot" hailing frequency.
Take a look at this map and I'll give an example of a Code 3 call broadcast in, for instance, Olympic Division #20 (actually Olympic "Area") which Jewie27 has added to his feed.
An emergency call, such as a 211 (robbery) or shooting in progress in Olympic would automatically set up the dispatcher's frequency-selection to include Olympic, and then clockwise from the left, the adjacent Wilshire, Hollywood,
probably Northeast since it's less than 200 yards outside of Olympic, Rampart, and Southwest frequencies, West Traffic Div (since this is in West Bureau), and both Central Traffic and South Traffic since they too cover areas immediately adjacent to OLY. Also on "Air/K9." So that's as many as nine patrol and traffic divisions' frequencies, and all the while that call is being transmitted, messages from units in all of those divisions can't be heard.
So if you listen to any frequency whenever it's even moderately busy, you'll notice an almost constant barrage of calls from other nearby divisions, which often makes it difficult or impossible to follow any given call from start to finish. Added to that, and what I believe Jewie27 was alluding to in his post #8, after the initial dispatch and any subsequent "crime broadcast" of the suspects' descriptions, most all subsequent information and unit-status-change messages are transmitted solely via their MDCs and not voiced at all. So after the call first goes out and any
urgent follow-up stuff you're not likely to hear them say anything else about the call or its final disposition. In any case, call dispositions routinely go to the dispatcher (actually to the CAD system) by MDC only, and aren't voiced.
There's a long story behind LAPD's insistance on multi-frequency broadcasting of hot calls which many people (myself included, but they never ask my opinion about anything anymore) consider excessive, but it's not likely to change any time soon... if ever. The backstory is probably in the archives here someplace from a couple years ago. If I happen to find it I'll add the link, but I don't feel like typing the thing out again.