[BC] Turntable arms

[Milton R. Holladay Jr.]

I was talking about the Fairchild.
But, yes, that's true of the RCAs. Who told you that ? I had to figure it
out for myself................
M
----- Original Message ----- 
From: "Phil Alexander" <dynotherm at earthlink.net>
To: "Broadcast Radio Mailing List" <broadcast at radiolists.net>
Sent: Wednesday, July 20, 2005 2:30 PM
Subject: Re: [BC] Turntable arms


> On 20 Jul 2005 at 1:38, Milton R. Holladay Jr. wrote:
>
> > Yes, the two speed model with the speed change control sticking out of
the
> > top of the spindle..................
>
> I was thinking of the RCA 70-D that had the 33/78 gearshift lever on the
> outer edge of the platter. When it was running you could "hot" switch it
> one way by catching the lever as the table went around - if you were
> careful. <g> IIRC the converted TT's that had the second planetary for
> 45's had to have the lever in 78 and there was a knob on the top of
> the deck on the corner opposite the 16" arm pivot that had to be turned
> from 33-78 to 45 to unlock the second planetary which was actually the
> same planetary as the 33-75 backward, IOW upside down. I was told this
> was how RCA came up with 45 as the speed, because it would be easy to
> convert the model 70 TT's using standard hardware.
>
>
> Phil Alexander, CSRE, AMD
> Broadcast Engineering Services and Technology
> (a Div. of Advanced Parts Corporation)
> Ph. (317) 335-2065   FAX (317) 335-9037