Well, I never even seen a Squires Sanders receiver, let alone listened to one!
I cant recall offhand any other receiver that used a 7360 as a mixer, but need to look in my vacuum tube receiver book, it lists all the receivers with their tube lineups. The ARRL sure liked the 7360, they used it in a lot of their receiver projects, in the 1967 handbook anyway. I suspect the cost of a 7360 was lower back then, not sure why its so expensive now, must be very rare? On the lower bands, I am not sure getting a really quiet mixer is important at all, but have not tried the other designs yet. I never realized just how noisy some receivers are till the first homebrew was done and compared it to the R390A. I guess you think its atmospheric noise, or just get used to it, but I cant stand the R390a anymore. The first homebrew receiver is VERY quiet, but is an odd design, I hope the new one is fairly quiet with the design I picked. If its not quiet, maybe I will try to duplicate the design of the first receiver using a 7 or 9 pin tube in place of the 12SA7. I am sure there is a tube to replace the 12SA7 in a miniature type. Maybe I should have planned it that way from the start, go with what you know works well, but trying other things is part of the fun... It will be easy to change the tube type if the first design does not work out (6AH6, cathode injected LO). Brett N2DTS > > The Squires Sanders SS-1R and SS-IBS both used a pair of > 7360s. I never had > a 1R, but I never thought the IBS worked noticeably better > than any other > relatively high end radio with more conventional vacuum tube > mixer circuitry like > the NC400 or the 51J4. And the thing was harder to align > correctly as well > (maybe that's why I won't impressed = never got it right:) Scott >
