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
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SK-401 Soft-Key Keying Interface


SKU: SK401 Category:


The SK-401 safely acts as an amplifier interface to your modern transceiver to the Drake L-4 or L-4B. This unit is mounted inside the amplifier and transforms the 24-27VDC key closure to approximately 1 VDC at 1.5 mA.  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