Wife says no problem, my I.T. here ,believe i need one that would be great. does it add to what i have or erase all and dupe yours?
For the PSR-500 (and the related scanners, as I mentioned above in response to your "clone" question), the programming file always overwrites whatever is in the scanner. You cannot add/change or otherwise modify a file & only send that update to the radio. It's all or nothing.
Almost done with a file, then I'll email it.
I have:
Conventionals
Johnson County
Tarrant County
Hood County
Parker County
Ellis County
Medevacs (Careflite/ Air-Evac, etc)
Texas DPS
Trunked Systems:
Burleson
FW/Tarrant County
Mansfield
Arlington
Parker County
You can always delete or lockout anything that does not interest you, save the changes, and then load the modified file.