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Switched DC Power from the radio to the intercom
system. (L-867 SB Modification)
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Fixed levels of receive audio unaffected by volume
control for both the intercom system and the siren for radio
reboroadcast.
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High current (8Amp) SPST relay to activate horn or
other device for selective calling, with or without installing the
L-861 Horn Relay option. (Mfg. Price
$70.00)
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Radio PTT and Mic input for intercom system to
radio.
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Simple hookup with the proper connectors to the
radio.
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