Yep, agree with you & RFI-EMI on that one !
Saber/SysSaber were the best line of radios PERIOD
(and on the GE side, the M-PA was a very serious competitor...)
I never knew you could mix transmit deviation settings on US "vanilla" Saber, that's good to know !
IIRC, the EURO version of the Saber (MX1000/2000/3000) was available in a "true" 2.5k Dev narrowband version.
I have a UHF MX1000 [Narrow version] (440-470MHz Saber I with 10 channels instead of 12), so with a NLE9462A Synth, but with a NXN6269A Ref Osc (2.5ppm, same as Systems Saber IIRC) instead of the common NXN6268A (5ppm).
The Receiver is a NLE9502A with CEPT marking, specially designed for NB.
(The PA(?) is a NLE9922A, which is unknow to me...)
I guess that the motherboard and the CORE are vastly different too, but I wonder what would happen if you put a NLE9502A with its 2.5ppm ref osc in a standard US Saber...
[I thought before that the CORE would have no notion of NB, but since you indicate that it was at least switchable in TX deviation, I'm not so sure anymore... Any guess ?
(It would be cool to turn a WB US Saber into a NB one with help of some MX1000 components
)]
PS : As you said, Good Ol' CVSD SecureNet will need that 4kHz deviation, maybe that's why my MX1000 is a non-Secure model...
(A vanilla Saber model capable of NB for clear and WB for Secure would be wicked cool, but that's not going to happen... (Yeah, yeah... I know that's what the Astro Saber is for !)