[Motorola] Maxar mobiles (x2) as a repeater ?

[Military Communication Hardware Enthusiast]

Hello All,

Just scored a Motorola (QFE6086AB) Mobile UHF Duplexer
(currently set up for 454T/459R split), and I'd like to
build up a mobile repeater using what I have on-hand,
which is several UHF Maxars.

Am I correct in presuming that if I re-rock one mobile
for the transmit freq (462.700) and the other one for the
input freq (467.700), then retune the duplexer accordingly
that it should work as desired ?

Anyone have a service manual for that duplexer ???
It's a 6 cavity (3x3) unit, with each 3-cav sub-assm
marked as "64B82255L01".

I'm thinking about setting each mobile up on simplex (T/R),
then with a little wiring/relay 'logic' I should be able to
also have "local" control over the system, and communicate
with remote operators using a local hand mic'.  Correct ?
Using the mic on the one tuned to the rptr output (462.7)
to talk, and listening on either that radio (462.7) for a
remote station operating simplex, or the one tuned to the
input (467.7) for a station operating with a TX offset.

With a toggle (controlling an RF coaxial relay) to select
RPTR/LOCAL function (basically bypass the duplexer when
in the LOCAL mode), and a second toggle to select the
audio from either Maxar speaker output to accomplish
the function of monitoring either Input or Output, and
a switch to defeat 'repeating' totally (in case of a
problem), I figure it should be quite functional.

Size of the system is not really a big consideration (lol)
for this project, but it would seem that it should all fit
(both Maxar mobiles and the Duplexer + wiring/controls)
in a 21x10x4" sheetmetal housing, which would fit nicely
inside against the roof above the windshield, and would
limit the RF cable run to the antenna to about 3' for
centering on the roof of my FullSize Jeep (Wagoneer).

This would allow me to use the higher power of the mobile
units, and the ERP gain of the antenna and groundplane of
the vehicle when away from the Jeep with a handheld, and
retain the ability to operate when mobile from the mic'
hanging from the installation.

Thoughts ?

Thanks,
          Bruce