Chrome69 said:
This i am sure has been asked before but here goes.. If you program a system with control channels only will you miss some calls? If not what is the point of putting all FREQ in then?
As far as I know, the thing about entering ALL the frequencies for trunked systems came about due to the first generation of scanners limitations and copyright issues. Scanners have come a long way and nowadays should work pretty close to the real radios which use the same method. So only the control channels are needed to be programmed. In fact, on the RS/GRE Pro-96/2096, it makes no difference if you enter all the freqs since it's "hard-wired" to control channel-only mode.
So to answer your question more directly, you should NOT miss any calls being in control channel only mode. In fact, you should be less likely to miss calls, because if they happen to add more frequencies to the system, the scanner will automatically use those too, all transparently to you just like for the users of the system.