Actually I have two C-Lines, one with a late S/N non-mod R-4C and the second one with a fully modified (as in every mod) "Sherwood R-4C" and have done side by side comparison's. The answer is YES!
In particular the roofing filter mod's are simply outstanding. They make a huge difference on both SSB and CW performance. My Sherwood R4C is fully loaded with the optional filters and has crystals for 160M and the low end of 10M too. The 300Hz roofing filter and 250Hz standard filter are a brick wall. I am looking forward to the November CW Sweepstakes and can't wait to put my receiver thru contest grade qrm proof testing. I am the 3rd owner "post mod" of this receiver and it came with a 3 ring folder that fully documents all of the work done to my R4C, the invoice say's there was over $900 worth of work done to the receiver. I have $1,300 into my C-Line which is a lot of money, however when you compare "Sherwood price" to the price of a equal or better performance Ten-Tec, Icom, Elecraft, or Yaesu I found that I was a minimum of 6dB$ ahead and have money left over to put into my antenna system. At least that is the reasoning I used to justify paying what I did for my Sherwood R-4C. The other thing I like about our old rigs is that we can work on them. The new rice boxes? Forget it! As you know with our old rig's a bottle of Deoxite is a must have. 73, Don KO7i From: William Mills [mailto:[email protected]] Sent: Tuesday, September 14, 2010 9:30 AM To: Don Jones Subject: Re: [Drakelist] W8JI & the R-4C Mixers..? Don, Are the Sherwood Engineering mods worth the cost? Would like to know your thoughts on the R-4C receiver after the Sherwood mods. My only experience with Sherwood Engineering is with the purchase of a SE-3 Synchronous Detector which I have interfaced with a Collins R-390A receiver. The SE-3 greatly improves the audio of the R-390A as well as SSB operation. 73, Bill Mills KC4AA
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