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RADIOHF - SHERWOOD SE-3 MkIIID Synch Detector SHERWOOD Engineering SE-3 MkIIID High-Fidelity Synchronous Detector / Phase-Locked Product Detector in excellent condition with external wall power supply and operating instructions. Audio upgraded for even better clarity by using polypropylene caps in the audio path. This is my personal unit and it has very low operating hours of use. Added switch dressing hardware for visual and physical enhancement. Can be upgraded to MkIV functionality by adding a SPST minature toggle switch and one 100K, 1/4W resistor allowing for locking on to AM roundtable reception. Instructions provided. This 'Cadillac' of synchronous detectors adds SSB reception to older AM only receivers. The host receiver must have a 455KHz IF output jack available. $1599 plus shipping cost; USPS money order only. Sold "as-is" and sale final. No warranty is either expressed or implied. No returns or refunds. Sells and ships to USA residents only. No offers please. Listing #1735365 by N7RAK Submitted on 07/07/25 Submitted from IP 38.109.253.73 Click to Contact Back to Previous Page

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