[MRCA] BC-605 Interphone Amp

[WA5CAB at cs.com]

Actually, that's not the way that it came down.  Prior to mid 1943, when two 
MWO's began to be accomplished on BC-604's (and slightly later on BC-684's), 
SCR-508 and SCR-608 required an RC-99 in the vehicle if interphone services 
were going to be available and SCR-528 and SCR-628 included BC-605 for the 
interphone function.  Or to put it another way, as a brief review of the 1942 and 
1943 edition TM's will show, the original models of the BC-604 and BC-684 had no 
interphone capability.

In a message dated 10/26/2007 7:09:45 PM Central Daylight Time, 
kk5f at earthlink.net writes: 
> >Anyone in the group need the interphone amp to go with their FM tank set?
> 
> Collector demand for the BC-605 has never been great, since it is used only 
> when a BC-604 or BC-684 transmitter is NOT installed with a BC-603 receiver 
> (SCR-538) or a BC-683 receiver (SCR-638).  The transmitter part of the 
> SCR-508/528/608/628 provides the interphone function, so a BC-605 in an installation 
> containing a BC-604/684 would be nonsense.  Still, your unit deserves 
> presevation.
> 
> All the BC-605 units I've ever seen appear almost NOS, so I wonder how 
> common those transmitter-less SCR-538/638 installations were.

Robert & Susan Downs - Houston
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