Hmmm Maybe we could convince Rob Sherwood to do a series of tests in the spirit of keeping the old one alive. I do know that he is a big fan of the R4C. Maybe he is a fan of the B-lins as well..
73 Gene K1NR On Mon, 30 Apr 2012 14:08:07 -0400 "Steve Wedge" <[email protected]> wrote: > Yep - and I've found 6AH6's for $3 locally. > > I fully understand that there are a lot of folks who want > to keep their sets original. It's especially important > with mint-condition sets. The two tube types are not > 100% identical: that's why the two types exist. The > Drake engineers intentionally picked this tube for a > reason, and there may likely be changes in performance > when you sub. But many times those changes may need > precise equipment to measure them. > > I've pulled in some "hamfest-fresh" R-4B's that were > using 6AU6's in place of V2 and V8. Yes, the receivers > were working - it's the same pinout, but a 6AU6 has very > different characteristics out at the edges of > performance. I've replaced 6HS6's with 6HS6's until > recently, but they're getting increasingly difficult to > find and expensive. I've done some work for others, too, > so I make them aware of the sub and ask which they want > now. > > It would be interesting to do some full-blown testing on > an R-4B with each tube type so that we could have hard > data. Tests identical to what the ARRL Lab uses would be > quite informative, I'm sure. I don't have the equipment > necessary for testing 3-order response, intercept points, > etc. > > Anyone got access to a decent lab? > > 73, > > Steve Wedge, W1ES/4 > > "Just so the wealth of the country, its capital, its > credit, must be saved from the predatory poor as well as > the predatory rich, but above all from the predatory > politician." > > - James Jerome Hill > > > All my computers have my signature with various pearls of > wisdom appended thereto. > > > > From: [email protected] > Sent: Monday, April 30, 2012 1:21 PM > To: [email protected] > Subject: [Drakelist] 6AH6 tube availability > > > hi gang > > After reading the farakus about getting 6AH6 tubes, I > checked one of my favorite sites, and viola 4 Bucks > The web site is radioera.com/tubes.asp. > > Enjoy them Drakes Tom, WD8JPP > > > -------------------------------------------------------------------------------- > > > _______________________________________________ > Drakelist mailing list > [email protected] > http://mailman.zerobeat.net/mailman/listinfo/drakelist --------------------------------------------------------------------- Web mail provided by NuNet, Inc. The Premier National provider. http://www.nni.com/ _______________________________________________ Drakelist mailing list [email protected] http://mailman.zerobeat.net/mailman/listinfo/drakelist
