RY-200 Replacement T/R Relay

Description

The RY-200 is a replacement T/R relay for the Heathkit SB-200 & SB-201. It is a 2PDT relay with a 120V coil.  A new mounting screw and rubber grommet is included.  Also included is a new 4.7K 5W R-18 replacement.  This resistor is included to replace the original R-18 (2K 7W).  This resistor must be changed due to a change in coil resistance of the relay from about 2.3K to 1.4K by the relay manufacturer.  This will allow the proper amount of operating bias to be applied to the tubes during transmit (~ -2VDC).