Batboard

Is there any way to find out the band split of one of these Spectra-based units without the RSS? I have a unit here and can't tell which split it is.

Did these units have the same splits as the analog Spectra?

The P1820AX is a VHF, the P1821AX is UHF. You can read the radio with the SPECTRA RSS, but you will not be
able to modify any of the "REPEATER" settings without the Repeater RSS. You actually need both RSS's to fully
set up the repeater.