1964 AM/FM radio knob off position?

[M W.]

Hi all, when the 64 am/fm radio is in the off position should the set screw be visible? If someone has a untouched radio could they provide a photo as well?

Thanks,
Craig Willetts

[Wayne M.]

Re: 1964 AM/FM radio knob off position?

Hi all, when the 64 am/fm radio is in the off position should the set screw be visible? If someone has a untouched radio could they provide a photo as well?
Thanks,
Craig Willetts

Craig -- interesting question. Just checked six C2 radios I have. The only '64's set screw is at 1pm when off. The others ('65s and '66s) are at bottom, top, 1pm and 3pm.

This is weird, as you can't really install the on/off/vol/tone control in that many clocked positions because of the connecting wiring and capacitors.

Could take pics, but would have to open the cases to show orientation of internals.

[M W.]

Re: 1964 AM/FM radio knob off position?

Wayne, I appreciate the reply back. No reason for the internal shot. I was referencing external orientation. The reason for my posting is at the last regional meet in Chattanooga, TN, I was point deducted two points for the radio set screw being visible when the radio was in the off position. I did not see any reference in the judging guide for off location. Seeing as the radio is original I can't imagine there is any other way for the knob to be installed. Maybe some of these judges just don't understand it all.

Thanks,
Craig W.

[Steven H.]

Re: 1964 AM/FM radio knob off position?

Hey Craig,
I don't know about being original or not but the set screw on mine faces the 3 o'clock direction when in the off position.

Steven

[Dan H.]

Re: 1964 AM/FM radio knob off position?

Well, had to check, it's at 11 oclock on my Mar 64 Coupe. Sounds rather ramdom!
Dan

[David D.]

Re: 1964 AM/FM radio knob off position?

Mine is an early Nov '63 build '64 Coupe.....I had a very hard time trying to locate mine, until I realized that I have a Radio Delete model.

Sorry, I just had to.

[Wayne M.]

Re: 1964 AM/FM radio knob off position?

And the answer is ---- TOTALLY RANDOM

At least based on these 3 NOS '65-67 On/Off/Vol/Tone controls, which I've set in the exact same clocking. Notice the flats on the shaft, which corresponds to the set screw of the knob. Oh, and I've turned them all off click.

I might add, however, that the tone sleeve slot seems to be the same orientation for all 3.

[M W.]

Re: 1964 AM/FM radio knob off position?

Wayne that's a great picture. Who knows why the judge would have deducted the points unless it was just a total lack of knowledge. Which is what was experienced on several ocassions. Everyone makes a mistake even a Master Judge. Thanks for the help as well as everyone else.

Craig

[Jack H.]

Re: 1964 AM/FM radio knob off position?

A couple of comments...

First, the pot/switch assy's shown indicate PN 7290296. For whatever reasons, this part seemed to change every year from the introduction of the AM/FM radio in '63 through its last use in '67. The 'generic' component sheets (e.g. HW Sams) list SEVERAL Delco PN's as functional substitutes for each other.

Now, the thread here specifically addressed a '64 radio. The Delco parts list for that chassis (985921) calls out 7287620 as the Vol/Tone/Switch. The very next year the chassis number changed to 986281 and the equivalent Vol/Tone/Switch changed to PN 7290641. Go figure what the difference(s) might have been...

But, to make the argument convincing (the flat on the control shaft was NOT clocked in a particular orientation), you'd have to line up several NOS 7287620 assys instead of those shown to make the case. Absent that degree of evidence, all I can say is I know I don't know!

[Wayne M.]

Re: 1964 AM/FM radio knob off position?

... But, to make the argument convincing (the flat on the control shaft was NOT clocked in a particular orientation), you'd have to line up several NOS 7287620 assys instead of those shown to make the case. Absent that degree of evidence, all I can say is I know I don't know!

Jack -- thought I'd post a pic of that '64 radio I had mentioned, with the set screw clocked at 1pm (off position). It's the 985921 model; serial 21FJA-9550, with DS-501 output transistor dated 349. Probably off car 41086xx. Now the weird part is that this switch has 7290296 stamped on the barrel, yet (in my limited experience) appears by the soldering (lack of burns, splatter) to never have been replaced. According to my Chevrolet publications, for '64 the control should be #7287414; for '65 (as you've posted in previous threads back on the old board) there are many #s. 1st listed in my '65 book is 7290641, then 7291126, 7290633, ending up with 7290296.

Now there's an indexed flat on the threaded stem and a slot in the hex nut at the base of the stem (on my 3 '296's). Without dismantling the control on this '64 unit, I'd assume the case is also indexed so that the switch can only have a fixed orientation, to aid in radio assembly. So if the "off" clocking is random, it would be impossible to correct 'to NCRS standards' by rotating the control assembly.

Any thoughts ?