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« on: August 23, 2011, 0138 UTC »
Hi OW,
Thanks much for the info! I had no idea that I'd get an experienced answer right away! Yeah, the SP-600 is much easier to scan quickly through the bands than the R-390A. But I like SSB reception with the BFO in the R-390A MUCH better! I could get about zilch with the BFO on the SP-600 when I was messing around in the ham bands with it yesterday. This SP-600 is in fair condition. Dents & scratches, no cabinet, no dial lock, and the crystal control has been electronically disconnected. On the plus side, it seems to work really well: signals are strong, audio is loud, no problems with scratchy controls or "crunching" when changing bands, works fine on all filters and all bands. Also, it seems that all of the black beauty caps have been replaced (at least the ones in the underside of the chassis have been), but I haven't opened up the decks or cans to see if those have been replaced. One cosmetically weird thing about this one is that the apparently original paint on this is all medium gray--including the dial escutcheons.
Thanks for the info on the SRR-21. Really interesting stuff. Funny that it's not nearly as good as an SP-600 or R-390A. It looks like lab-grade equipment...and then 29 tubes? You'd think this would be a monster receiver. Now the soldered-in tubes? Just idiotic design for maintenance compared to the other two. I don't think I'll go out of my way to get one of those receivers!
Thanks again for the info!
Andrew