recapping Hallicrafters S-38B question
 

I purchased a Hallicrafters S-38B on ebay for $40. The seller said it
still worked, and he was right. Hooked it up to about 10 feet of wire
and could pick up stations on all bands.

I have been reading a lot on antique radio restoration and S-38
restoration before I do any recapping.

The R17 330 ohm resistor is fried completely in half. No problem fixing
that.

But replacing the two line to ground capacitors C27 .02 mfd, 600v and
C26, 400v.1 mfd (it says mfo on the schematic, but that must be a
misprint). I figure these are the line to ground capacitors, since they
are the only two on the schematic going from both lines to ground.

I plan to replace the power cord with a bladed one. I plan to replace
C26 & C27 with Y2 safety capacitors. But cannot seem to find any at 400
and 600 volts. The ones I can find are just 250 volts.

I must be missing something about the solution.

I really don't want to put in an isolation transformer.

Any help you can give me on replacing C26 and C27 will be most
appreciated.

Also I have about 45 feet of space in my two story home's attic. Any
recommendations on a good DX antenna?

Thanks for your time.

John

recapping Hallicrafters S-38B question
 

wrote:
But replacing the two line to ground capacitors C27 .02 mfd, 600v and
C26, 400v.1 mfd (it says mfo on the schematic, but that must be a
misprint). I figure these are the line to ground capacitors, since they
are the only two on the schematic going from both lines to ground.


I plan to replace
C26 & C27 with Y2 safety capacitors. But cannot seem to find any at 400
and 600 volts. The ones I can find are just 250 volts.
I must be missing something about the solution.

I really don't want to put in an isolation transformer.

Any help you can give me on replacing C26 and C27 will be most
appreciated.


Also I have about 45 feet of space in my two story home's attic. Any
recommendations on a good DX antenna?



If those 250 volt replacement caps are sold as "safety caps", they
should be excellent. They are rated to handle any normal surges from
the AC power line.

If your antenna must be inside the attic, just run a wire all the way
from one end to the other and bring one end down to your S-38.

Others may suggest a type of loop antenna. Thousands of S-38's have
been used sucessfully with single wire antennas.

Good DXing.
John

recapping Hallicrafters S-38B question
 

wrote in message
ups.com...

John


John

The wide blade (neutral) should be tied to the chassis side of the AC line.
The AC switch (if it isn't wired this way already) should be wired to open
the
hot side of the AC leg.

Tie the ground wire to the case. Make sure the cabinet to chassis insulators
are in good condition--you don't want to have the neutral and ground leads
tied together at the equipment!

If R17 is open: that was probably caused by a defective rectifier (pins 3-7
on the filament tap open). Check the rectifier for an open filament on the
6 pilot lamp section.

justradios.com out of Canada has an extensive line of AC rated caps.

Pete k1zjh

recapping Hallicrafters S-38B question