Jeff Weinberg, W8CQ

Your World-Wide Source For Amateur Radio Amplifier Parts & Upgrade Kits

Your World-Wide Source For Amateur Radio Amplifier Parts & Upgrade Kits
12 July 2021: Due to a flood at my home/shop, Harbach Electronics is closed until I get this mess cleaned up and all of the damage repaired. Effective immediately I will be closed for 30-60 days or how ever long it takes to clean up and repair the damage. All pending orders will be canceled and refunded via the method of payment. I am sorry for the closure but I have to get things repaired and cleaned up. I will be back but it will be a little while. If you wish to order Dean Jacobs racing gear, please email me at and send me your phone number and I will contact you and process your order.
You can still view products, but no orders are being taken at this time. Sorry for the inconvenience!

RY-200 Replacement T/R Relay


SKU: RY200 Category:


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).

Additional information

Weight 0.16 lbs
Dimensions 2.0 × 2.0 × 2.0 in