08-09-2008, 12:05 AM
Slow down, guys!! Look at the tube in yhis "Preamp". It should be a 2A7. This doo-whatsis is an OSCILLATOR, and not a preamp. RCA had this thing for the attachment of a phono player to any radio. Using it, you didn't need to go into the set's circuitry to connect their phono attachment. I have one of tose things NIB, and you can see the ads for them in the RCA red books.
Check me out on this.
NOW, here's a funny thing. On the RCA R-7 sets, there's already a terminal strip for a phono attachment. This takes you right into the set's audio input. If I'm right about the oscillator, I wonder why they'd have not used the terminal board for the phono?
I much confuse.
Check me out on this.
NOW, here's a funny thing. On the RCA R-7 sets, there's already a terminal strip for a phono attachment. This takes you right into the set's audio input. If I'm right about the oscillator, I wonder why they'd have not used the terminal board for the phono?
I much confuse.
