Scott Mitchell, KB1SEL

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

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

SK-220 Soft-Key Keying Interface


SKU: SK220 Category:


The SK-220 safely acts as an amplifier interface to your modern transceiver to the Heathkit SB-220 or SB-221. This unit is mounted inside the amplifier and transforms the 120VDC key closure to approximately 0.7VDC at 1.5mA.  Without it you run the risk of severely damaging the keying circuit in your transceiver.

Additional information

Weight 0.07 lbs
Dimensions 5.5 × 3.5 × 0.5 in