[NJARC] Help Identifying A Radio

[Don Ehrlich]

Al,

Thanks for the info.  I am looking forward to seeing the drawing.

Someone suggested that the extra hole in the front panel may have been
for a headphone jack.  That now
makes a lot of sense to me because regeneration was controlled by the
second variable capacitor.

I have seen pictures of these kinds of radios over the years and have
a fair idea of how they were built but I will
still be needing some help when it comes time to rebuild this one to
be sure it represents what was considered fine craftsmanship in 1925
by a do-it-yourself-er of moderate means ...and not the super slick
creation now possible by anyone today with modern tools and materials.

Oh ... I don't know ....on the other hand  maybe it would be fun to
create this radio on an oiled walnut base with milled slots carrying
.06 polished brass busbar 'wiring'.  Is it possible to polish all
those brass plates of the tuning capacitors?  Hmmmm

Don K7FJ


> Hi Don,
>
> I can't ID the particular set, but I can tell you how to
> wire what you've got.  The second variable cap is almost
> certainly a regeneration control.  It goes between the
> battery end of the tickler and ground.  There may need to be
> an RF choke between the tickler and the headphones.  Could
> well work with out it.  If you can't stop the regeneration,
> you need the choke.
>
> The rheostat will control regeneration, but it's clumsy, and
> is really just used to compensate for sagging A-battery
> voltage.  A rheostat of about 6 ohms would suggest a 201A
> tube.  A higher value would indicate a '99 or 30.
>
> I'm sending a drawing in a separate e-mail.  If anyone else
> needs to see it, just ask.
>
> Regards,
> Al
>
>