[Hallicrafters] Help With Hallicrafters 5T

[Liles and Naomi Garcia]

Good afternoon Everybody,

I am working on a Hallicrafters 5T that I acquired as a cardboard box case
( this is similar to the proverbial basket case ).  I think that I have all
of the parts except for the tube shields.  My radio does not have the boy on
its dial; it is the other one with the plain dial artwork.  My plastic dial
is good.

I am using a Riders schematic from the Internet.  The same schematic is on
the BAMA website.  The schematic shows a 8 mfd and a 4 mfd in a
negative-lead filtering circuit.  My radio has two caps in it--each one is a
dual 8 mfd cap.  The caps are a little larger than a small box of wooden
matches that were around many years ago.  They have the " Mallory " brand on
them and they were bolted to the chassis with tabs that they have.  Are
these original, or have they been added?  There is evidence that some work
has been done on the radio such as some extended wires, but the radio has
not been hacked.  Both sections of each cap are paralleled and are wired in
where they are supposed to be.

I have cleaned up the chassis somewhat, and will be replacing the wax
capacitors and checking the resistors.  The power transformer needs some
cleaning, and I will give it a coat of paint.  It is a silver-gray color now
and I would like to paint it a similar color.  Should I use a
high-temperature aluminum paint or what?

One more question is about the output tube circuit.  The schematic is drawn
such that the screen grid receives audio input from the 75 triode, and the
control grid serves as the screen grid.  I don't mean to be picky, but is
this just a drawing error?

Just how great is the negative lead filtering in this radio?  Does it make
any sense to rewire it be a more conventional filter circuit?  However, the
schematic shows that the speaker field is 2000 ohms, which is a little high
to be an effective filter choke.

I am getting this radio working for a " Before And After " contest for our
antique radio club, NorthWest Vintage Radio Society in Portland, Oregon.
One last question is how common are these radios?

Many thanks in advance for your all's help!!

Best regards from Aloha, Oregon,
Liles Garcia
landn2 at frontier.com