skipp025 wrote: >> If you're looking more towards public safety or 'critical >> infrastructure' (basically utilites), you'll want something with >> a faster access time. > > I'm doing all the above with LTR and it works very well. You're > talking real world access time measured (most all trunking formats) > in hundreds of milliseconds typical. Radios in "most" all trunking > formats have to first transpond... >
Well, I know EDACS is around 100-150 mS, where LTR is typically 300-500 mS. The baud rate, and amount of data, are the main factors in limiting access time. You'll also find the older motorola formats, and others, that use a slow baud rate, will have longer channel grants. LTR is a VERY slooooow baud rate, but not as much data is sent, which partially makes up for it. Motorola formats used to be 3600 baud (or lower), where EDACS and P25 are 9600. I'm pretty sure MPT is 9600 as well. -- Jim Barbour WD8CHL
