Had an opportunity to monitor a few calls today that were on the VHF Tac channels but was not able to on either of the digital systems. If I am reading correctly Mesa's VHF channels are simulcasted onto the corresponding talkgroups? Also with the PRWC they have talkgroups that link the vhf channels to the digital system but heard nothing. In both cases I put the scanner on the correct talkgroups and monitored the vhf freq with a dual band ht, heard the traffic on the vhf side but nothing on the digital side. I can hear the Mesa Simulcast and Simulcast C rather well so I'm not sure where the snag is?