Minimum Revision of Radio Programer to support P-25-T
Elroy is correct. ProGrammer 18 does not support P25T. You need R19 at the very minimum.
In Radio Programmer,
R17a03 was the first revision to support P-25 Trunking (Phase-1),
and did NOT require a license key to install. This software application was only given to a couple of M/A-Com customers (York County, Pennsylvania, etc.) to get them going on their brand-new P-25 Trunk systems.
The first "official" public release of Programmer software to support P-25 Trunking was R19a06, and did require a license key for installation.
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The following revisions of Radio Programmer before being replaced with Radio Program Manager (RPM) were:
R17A03...EXCEPTION RELEASE with P-25 Trunk Support
R17A05...No P-25 Trunk support
R18B02...No P-25 Trunk support
R19A06...First public release with P-25 Trunk Support, and required License Key
R20A10...Final M/A-Com labeled version.
R20B01...Special version for the US Navy, which did not require a license key to install.
R20C05....
Final version, only change from R20a10 is the 'branding' logo was changed from M/A-Com to Harris.
I hope this helps...