RCD CasaRain
Drake R-4A R4B Product Detector Upgrade
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$29.00 CAD
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The dual-diode product detector in the 11 tube Drake R-4A (aka R-4A "late") and the Drake R-4B has poor dynamic range, promoting distortion on AGC attack. This manifests itself as annoying clicking and popping on strong signals. A modern adaptation of the former Sherwood board, this active Gilbert-cell detector will correct this deficiency. Installation takes only about 30 minutes but does require basic soldering and schematic reading skills. Board size is 30mm x 25mm
![Drake R-4A R4B Product Detector Upgrade](http://casarain.com/cdn/shop/products/IMG_1198_1445x.jpg?v=1656608675)
![Drake R-4A R4B Product Detector Upgrade](http://casarain.com/cdn/shop/products/drakeprod_1445x.png?v=1656608675)