[Milsurplus] Sunair URC-92 and modified H-33 handset

[Jim Haynes]

The military manual on the URC-92, which is one configuration of the
Sunair GSB-900DX, shows it using a modified H-33 handset.  One obvious
modification is the substitution of a 5-pin MS connector for the U/77
connector.  Now the unmodified H-33 uses a carbon mike, but I don't see
in the schematic any provision for supplying DC to the mike connector
in the UGC-92.  The Sunair GSB-900DX normally uses a dynamic hand mike.
So does anyone know if the modified H-33 handset includes changing
to a dynamic mike element, or is there some way of supplying DC for the
carbon mike that is not apparent in the schematic?




jhhaynes at earthlink dot net