[ARC5] Re: [Milsurplus] Pipsqueack info desired

[Mike Morrow]

>jcoward5452 at aol.com wrote:
>
>> I now have a NOS BC-608-A "Pipsqueak"ticking away on my kitchen 
>> table.However it is lonely and would like very much to have some good 
>> reading material to keep company.An internally threaded 4 pin 
>> connector of unobtainium quality would certainly quell qualms of 
>> loneliness.I've googled this but not much info.

Mike Hanz wrote:

>Uses the BC-616 as the relay box.  Interconnection schematic at 
>http://aafradio.org/sidebar/BC-616.jpg

If the BC-608-A was part of an SCR-522 or 524 VHF-AM command set installation instead of the SCR-274-N, no relay box was required.  Wiring connections are shown in the SCR-522/524 maintenance manual.

I wonder what percentage of the BC-608-A contactors were connected to the SCR-274-N, rather than the SCR-522.

BTW, here is a short operational summary of the function of the RC-96 in the SCR-274-N system:

The BC-616 relay box installs between the BC-451-A transmitter control box and the BC-456-A modulator.  It contains relays that, when activated, override the mode and transmitter select controls of the BC-451-A in order to select the transmitter that is in the number one position, set it for TONE (MCW), and key it.  It uses the same 18-pin PL-153 connectors that the BC-541-A and BC-456-A use.

The heart of the RC-96 is the BC-608 timer/contactor unit on the pilot's instrument panel.  It is a simple hand-wound mechanical clock that activates contacts to control the keying of the BC-616.  When activated, it keys the BC-616 for 14 seconds of each minute.  Thus, the whole system would result in a 1000 Hz tone-modulated signal being automatically sent on transmitter number one frequency, 14 seconds out of each minute.

The clock will function for about 24 hours after being fully wound up.

Mike / KK5F