Detector cable connecting the SD-31 Synthesizer-Detector to a FIM-41 field strength meter used as the bridge detector.Potomac C30042 Detector Cable, SD-31 to FIM-41SKU: C30042 $160.00 Regular Price$154.55Sale PriceExcluding Sales Tax | Shipping PolicyQuantity*Add to CartBrandPotomac InstrumentsProduct DetailsManufacturer: Potomac InstrumentsManufacturer part number: C30042Sold by: Radio Gearheads, 705 Eaton Ave N, Fosston, MN 56542 Questions about compatibility, configuration or lead time? Call 1-800-992-1506 or use Get A Quote.