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 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 hope to be back open around mid-October 2021.
You can still view products, but no orders are being taken at this time. Sorry for the inconvenience!

ES4SB220 Replacement Filter Capacitor Block


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The ES4SB220 is an upgraded replacement filter capacitor block for the Heathkit SB-220, SB-221 & HL-2200.  This product features high-quality 330μF 450VDC snap-mount electrolytic capacitors and 100KΩ 5-watt bleeder resistors that dissipate about 30 watts less heat than the original Heathkit design so it operates a little cooler. Once assembled, the unit fits back into the original plastic spacers.  You may purchase the printed circuit board only (for those customers who wish to supply their own capacitors, resistors and hardware) or the complete kit.

Additional information

Weight 1.05 lbs
Dimensions 5.5 × 3.5 × 2.5 in
Kit Type

PC Board Only, Complete Kit