Look further down the messages here.? I think this was already discussed.? As an alternative, try this site.

?

?

They have lots of replacement knobs and you might find some very close.

?

K2WH

?

?

While I just posted the SX-117 restoration has gone well with the BFO adjustments, a new and puzzling item

has reared its head.

?

The selectivity control, which is connected to the 2^nd conversion 50 kHz IF section, is affecting the received (observed)

“S” meter level.? That is, in the 5 kHz setting, I get a certain “S” meter indication, in the 2.5 kHz setting I get higher readings

and in the .5 kHz setting, I get even higher “S” meter readings.? All on the same signal.

?

Looking at? the schematic, I do not see how narrowing the selectivity of the receiver at the 2^nd IF level would affect the “S”

meter readings in the 1^st IF section where the “S” meter is connected!? While it matters little to me what the received signal

strength is, I am left wondering why this would happen as I see no direct correlation between the 1^st and 2^nd IF operation that

would affect the “S” meter.

?

K2WH

?

?

?

Further to this, I should add, that new or current bottles of “White Out”, no longer use a brush for application,

they have a triangular shapes wedge as the applicator.? Sort of looks like a very small triangular sponge.

?

K2WH

?

Well, I think I finally got it.? At the suggestion of others, a fresh look or adjustment of the BFO circuit was needed.

This seems to be the most critical adjustment one can make on an SX-117.? Anyway, adjusting the BFO frequency

only slightly, (not even 1 hz), solved the problem with inverted USB & LSB problem.? The crystals are in the correct

sockets and all seems.

?

I replaced the 2 wire line cord with a 3 wire.? This required some chassis mods but it came out nice.? The mod included

the reaming out of the AC line access hole for a larger cord and strain relief.? Thank GOD, the chassis is aluminum so

it turned out to be a piece of cake.

?

At this point, I am waiting for a replacement 500k volume control which is very bad and not fixable through spraying and

most importantly, the HT-44 transmitter and matching PS-150-120 power supply I recently acquired.? I also have the

HA-10 LF converter which is an accessory for the SX-117.

?

This will be a nice setup when done.

?

K2WH

?

?

I cannot answer that question.? If you don’t already have one, your best bet is to get a service

manual for the receiver.? You can get them from various sources such as radioreprints.? Do a google

search.? I do not know if you are setup with test equipment but you may want to think about getting some

of the basics if you are into restoring? these old radios.? I too get all my tubes from the same company and

I have found some of the tubes not up to par.? Don’t assume because they are in a box, they are good.? Unless

you tell them to test them prior to delivery, it’s pot luck.? One of the first items I got was an old tube checker

of which many are found on Ebay.? It took (3) tries to get the one I needed.? If you order any tubes from any

vendors, tell them to check them first.? It costs a little more but it is worth it.? In the meantime, go get the

manual if you don’t already have one.? Good luck with it.

?

Bill

K2WH

?

?

For a receiver such as the S-38, almost any long wire, straight or looped will work fine.? I would just put up as much

wire as possible and go from there.? If you are experiencing overloading, then I would check the receiver AVC circuit.

Perhaps it is not functioning correctly.? Have you checked the tubes?

?

K2WH

?

?

Hi I use a slinky antenna home made but like the antennas sold on
ebay. Its hanging on a hook on my shop door. I do not think I have
$5 invested. A pece of wire a push on connector to fit the slinky
and some pvc pipe to insulate the ends.
?????????????????? Tom


--- In HallicraftersRadios@..., "tuberadioguy"
wrote:
> I'm new to the group and I'm just wondering what kinds of
> antennas (length, electrical arrangement) people have used
> with a Hallicrafters radio such as the S38 type (or similar).
>
> Has anyone used a loop antenna with a model such as the S38?
>
> A previous owner an S38 radio suggested an untuned long wire
antenna,
> but a 40 ft length of wire seemed to cause a lot of overloading
> on mine.
>
> Also, AM is quite noisy (probably local noise) below 800 kHz with
> a long wire.
>
> I'm interested in details like lengths and / or electrical
> arrangements (dipole,sloper, etc.) that have been used.
>??
> I'd welcome hearing anyone's shortwave and AM listening?
experiences
> with a S38 model.
>
>
> Thanks
>?
> Tuberadioguy




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Hallicrafters equipment was on the front lines (literally) during the early years with military communications radios. On the home front with shortwave receivers, amateur transmitters and home entertainment equipment. Truly an American company.

K2WH (Your Moderator)