CleanCab Spectra update to a ASTRO narrowband - Is it possible?

[k7kcn]

I have about 5 older railroad CleanCab Spectra radios that are wideband and not able to be upgraded to narrowband.

My question is that since the base radio inside is just a Spectra mobile, can that older wideband brick be swapped out for an ASTRO brick and operate as normal?

Thanks!

[train_radio_guy]

I'm not sure that's possible. Railroad version ran its own 'flavor' of firmware, and as such was unique onto itself. Swapping the RF Deck out with a narrowband unit, the old & the new may not play nice together. If it's been done successfully, I've not hear of it.