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Re: Just picked up a nice S-40B - looking for a knob set

 

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OK Pete, thanks

Keep me posted re: schedule to Green Acres? (hahahaha)

Tom L



On 11/28/2022 13:48, peteradio@... via groups.io wrote:

Tom,

Sorry, I don't have any experience with the SX42.

The Hallicrafters reflector is a good source if you need some insights on the approach and specific issues.

73's,

Pete?

W8AA?


On Sun, Nov 27, 2022 at 9:53 PM, Thomas Latimer
P.S.?? You any good rebuilding SX-42's ?? I have one in partial disassembly that needs it, and recapping.

Tom

On 11/27/2022 22:55, peteradio@... via groups.io wrote:
Tom,

Willing to pick up your S40B on my next trip to Hickory Corners, next month.? Please advise.

73's,

Pete?

W8AA?


On Sun, Nov 27, 2022 at 5:58 PM, Thomas Latimer
Craig,

I have an s-40B that I've had for many years, never turned on.? A little cosmetically rough but I believe completely intact, also has a full set of knobs.? Will send it your way if you're willing to pay shipping, which I will determine if you send address.

Also could take pictures but it may be a few days (lots of 'honey-do' things higher on list)

Best wishes, enjoy the holidays

Tom Latimer
Okemos, Michigan (next to East Lansing)



On 11/27/2022 15:30, Craig Delmage wrote:
I already have a nice SC-40B (Canadian model built by Rogers), and I just picked up a rather nice S-40B for a song on Facebook Marketplace. Nice cabinet, and nice lettering but was a bit greasy and dirty and smelled of smoke. I have now spent two days giving it a thorough cleaning inside and outside. It now looks great and smells neutral.

The owner said he couldn't turn it on. I suspected he didn't know how since it is a bit tricky turning it on with the tone switch, not the more intuitive send/receive switch. Sure enough, after a quick bench visual to make sure nothing was out of sorts, I took a risk and turned it on. It works fine. So now I am going ahead with a full refurbishment and tune-up.

Although the knobs are ok. I am missing the Pitch Control knob. Therefore I am looking for at least it or a full set of knobs.

Is anyone parting one out an S-40B that can sell me a knob or set?

Thanks in advance.



Re: Just picked up a nice S-40B - looking for a knob set

 

Tom,

Sorry, I don't have any experience with the SX42.

The Hallicrafters reflector is a good source if you need some insights on the approach and specific issues.

73's,

Pete?

W8AA?


On Sun, Nov 27, 2022 at 9:53 PM, Thomas Latimer
<tlatimer4@...> wrote:
P.S.?? You any good rebuilding SX-42's ?? I have one in partial disassembly that needs it, and recapping.

Tom

On 11/27/2022 22:55, peteradio@... via groups.io wrote:
Tom,

Willing to pick up your S40B on my next trip to Hickory Corners, next month.? Please advise.

73's,

Pete?

W8AA?


On Sun, Nov 27, 2022 at 5:58 PM, Thomas Latimer
Craig,

I have an s-40B that I've had for many years, never turned on.? A little cosmetically rough but I believe completely intact, also has a full set of knobs.? Will send it your way if you're willing to pay shipping, which I will determine if you send address.

Also could take pictures but it may be a few days (lots of 'honey-do' things higher on list)

Best wishes, enjoy the holidays

Tom Latimer
Okemos, Michigan (next to East Lansing)



On 11/27/2022 15:30, Craig Delmage wrote:
I already have a nice SC-40B (Canadian model built by Rogers), and I just picked up a rather nice S-40B for a song on Facebook Marketplace. Nice cabinet, and nice lettering but was a bit greasy and dirty and smelled of smoke. I have now spent two days giving it a thorough cleaning inside and outside. It now looks great and smells neutral.

The owner said he couldn't turn it on. I suspected he didn't know how since it is a bit tricky turning it on with the tone switch, not the more intuitive send/receive switch. Sure enough, after a quick bench visual to make sure nothing was out of sorts, I took a risk and turned it on. It works fine. So now I am going ahead with a full refurbishment and tune-up.

Although the knobs are ok. I am missing the Pitch Control knob. Therefore I am looking for at least it or a full set of knobs.

Is anyone parting one out an S-40B that can sell me a knob or set?

Thanks in advance.


Re: Just picked up a nice S-40B - looking for a knob set

 

开云体育

P.S.?? You any good rebuilding SX-42's ?? I have one in partial disassembly that needs it, and recapping.

Tom

On 11/27/2022 22:55, peteradio@... via groups.io wrote:

Tom,

Willing to pick up your S40B on my next trip to Hickory Corners, next month.? Please advise.

73's,

Pete?

W8AA?


On Sun, Nov 27, 2022 at 5:58 PM, Thomas Latimer
Craig,

I have an s-40B that I've had for many years, never turned on.? A little cosmetically rough but I believe completely intact, also has a full set of knobs.? Will send it your way if you're willing to pay shipping, which I will determine if you send address.

Also could take pictures but it may be a few days (lots of 'honey-do' things higher on list)

Best wishes, enjoy the holidays

Tom Latimer
Okemos, Michigan (next to East Lansing)



On 11/27/2022 15:30, Craig Delmage wrote:
I already have a nice SC-40B (Canadian model built by Rogers), and I just picked up a rather nice S-40B for a song on Facebook Marketplace. Nice cabinet, and nice lettering but was a bit greasy and dirty and smelled of smoke. I have now spent two days giving it a thorough cleaning inside and outside. It now looks great and smells neutral.

The owner said he couldn't turn it on. I suspected he didn't know how since it is a bit tricky turning it on with the tone switch, not the more intuitive send/receive switch. Sure enough, after a quick bench visual to make sure nothing was out of sorts, I took a risk and turned it on. It works fine. So now I am going ahead with a full refurbishment and tune-up.

Although the knobs are ok. I am missing the Pitch Control knob. Therefore I am looking for at least it or a full set of knobs.

Is anyone parting one out an S-40B that can sell me a knob or set?

Thanks in advance.


Re: Just picked up a nice S-40B - looking for a knob set

 
Edited

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Pete,

At first I thought Hickory Corners was that TV show that Eddie Albert and Zsa Zsa Gabor starred in back in the 70's (hahahhahaha)

Anyway, sure, if that's the way you want to do this.? I will get it off the shelf, dust off, and remove any mouse nests if present (another hahahaha)
Pictures when I can, but before your trip .

Give it a good home....had it so long I don't even remember where/when I got it.

Keep me advised of your travel plans.......I'm right off I-96 at Okemos Road.? MacDonalds or Culvers right there at the corner.

Glad you can use it.

Tom L



On 11/27/2022 22:55, peteradio@... via groups.io wrote:

Tom,

Willing to pick up your S40B on my next trip to Hickory Corners, next month.? Please advise.

73's,

Pete?

W8AA?


On Sun, Nov 27, 2022 at 5:58 PM, Thomas Latimer
Craig,

I have an s-40B that I've had for many years, never turned on.? A little cosmetically rough but I believe completely intact, also has a full set of knobs.? Will send it your way if you're willing to pay shipping, which I will determine if you send address.

Also could take pictures but it may be a few days (lots of 'honey-do' things higher on list)

Best wishes, enjoy the holidays

Tom Latimer
Okemos, Michigan (next to East Lansing)



On 11/27/2022 15:30, Craig Delmage wrote:
I already have a nice SC-40B (Canadian model built by Rogers), and I just picked up a rather nice S-40B for a song on Facebook Marketplace. Nice cabinet, and nice lettering but was a bit greasy and dirty and smelled of smoke. I have now spent two days giving it a thorough cleaning inside and outside. It now looks great and smells neutral.

The owner said he couldn't turn it on. I suspected he didn't know how since it is a bit tricky turning it on with the tone switch, not the more intuitive send/receive switch. Sure enough, after a quick bench visual to make sure nothing was out of sorts, I took a risk and turned it on. It works fine. So now I am going ahead with a full refurbishment and tune-up.

Although the knobs are ok. I am missing the Pitch Control knob. Therefore I am looking for at least it or a full set of knobs.

Is anyone parting one out an S-40B that can sell me a knob or set?

Thanks in advance.


Re: Just picked up a nice S-40B - looking for a knob set

 

Tom,

Willing to pick up your S40B on my next trip to Hickory Corners, next month.? Please advise.

73's,

Pete?

W8AA?


On Sun, Nov 27, 2022 at 5:58 PM, Thomas Latimer
<tlatimer4@...> wrote:
Craig,

I have an s-40B that I've had for many years, never turned on.? A little cosmetically rough but I believe completely intact, also has a full set of knobs.? Will send it your way if you're willing to pay shipping, which I will determine if you send address.

Also could take pictures but it may be a few days (lots of 'honey-do' things higher on list)

Best wishes, enjoy the holidays

Tom Latimer
Okemos, Michigan (next to East Lansing)



On 11/27/2022 15:30, Craig Delmage wrote:
I already have a nice SC-40B (Canadian model built by Rogers), and I just picked up a rather nice S-40B for a song on Facebook Marketplace. Nice cabinet, and nice lettering but was a bit greasy and dirty and smelled of smoke. I have now spent two days giving it a thorough cleaning inside and outside. It now looks great and smells neutral.

The owner said he couldn't turn it on. I suspected he didn't know how since it is a bit tricky turning it on with the tone switch, not the more intuitive send/receive switch. Sure enough, after a quick bench visual to make sure nothing was out of sorts, I took a risk and turned it on. It works fine. So now I am going ahead with a full refurbishment and tune-up.

Although the knobs are ok. I am missing the Pitch Control knob. Therefore I am looking for at least it or a full set of knobs.

Is anyone parting one out an S-40B that can sell me a knob or set?

Thanks in advance.


Re: Just picked up a nice S-40B - looking for a knob set

 

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I enjoy pairing my S-40B with an Elmac AF-67 for mostly CW, but some AM. I have "better" receivers, including an R-388, but the S-40B is fun and much easier to haul around if I am setting up portable than are the heavier boat anchors. At age 80 I pay more attention to that sort of thing.

?

73,

?

Maynard

W6PAP

?

?

On Sunday, November 27, 2022 08:58:12 PM you wrote:

> Craig,

>

> I have an s-40B that I've had for many years, never turned on.? A little

> cosmetically rough but I believe completely intact, also has a full set

> of knobs.? Will send it your way if you're willing to pay shipping,

> which I will determine if you send address.

>

> Also could take pictures but it may be a few days (lots of 'honey-do'

> things higher on list)

>

> Best wishes, enjoy the holidays

>

> Tom Latimer

> Okemos, Michigan (next to East Lansing)

>

>

>

> On 11/27/2022 15:30, Craig Delmage wrote:

>

> > I already have a nice SC-40B (Canadian model built by Rogers), and I

> > just picked up a rather nice S-40B for a song on Facebook Marketplace.

> > Nice cabinet, and nice lettering but was a bit greasy and dirty and

> > smelled of smoke. I have now spent two days giving it a thorough

> > cleaning inside and outside. It now looks great and smells neutral.

> >

> >

> >

> > The owner said he couldn't turn it on. I suspected he didn't know how

> > since it is a bit tricky turning it on with the tone switch, not the

> > more intuitive send/receive switch. Sure enough, after a quick bench

> > visual to make sure nothing was out of sorts, I took a risk and turned

> > it on. It works fine. So now I am going ahead with a full

> > refurbishment and tune-up.

> >

> >

> >

> > Although the knobs are ok. I am missing the Pitch Control knob.

> > Therefore I am looking for at least it or a full set of knobs.

> >

> >

> >

> > Is anyone parting one out an S-40B that can sell me a knob or set?

> >

> >

> >

> > Thanks in advance.

> >

>

>

>

>

>

>

>

?


Re: THE SHADOW KNOWS

 

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Figures he’s a Hallicrafters guy!?

On Nov 27, 2022, at 8:21 PM, waltcates <cateswa@...> wrote:

?
I am watching an episode?of the Shadow (1949) on TUBI. The shadow is in his lab testing some kind of stone. Behind him is an S19 or S20 sitting on top of an HT-6.


?Walt Cates, WD0GOF
?
Your past has no control over your future. Only your NOW can impact your future.



THE SHADOW KNOWS

 

开云体育

I am watching an episode?of the Shadow (1949) on TUBI. The shadow is in his lab testing some kind of stone. Behind him is an S19 or S20 sitting on top of an HT-6.


?Walt Cates, WD0GOF
?
Your past has no control over your future. Only your NOW can impact your future.



Re: Just picked up a nice S-40B - looking for a knob set

 

开云体育

Craig,

I have an s-40B that I've had for many years, never turned on.? A little cosmetically rough but I believe completely intact, also has a full set of knobs.? Will send it your way if you're willing to pay shipping, which I will determine if you send address.

Also could take pictures but it may be a few days (lots of 'honey-do' things higher on list)

Best wishes, enjoy the holidays

Tom Latimer
Okemos, Michigan (next to East Lansing)



On 11/27/2022 15:30, Craig Delmage wrote:

I already have a nice SC-40B (Canadian model built by Rogers), and I just picked up a rather nice S-40B for a song on Facebook Marketplace. Nice cabinet, and nice lettering but was a bit greasy and dirty and smelled of smoke. I have now spent two days giving it a thorough cleaning inside and outside. It now looks great and smells neutral.

The owner said he couldn't turn it on. I suspected he didn't know how since it is a bit tricky turning it on with the tone switch, not the more intuitive send/receive switch. Sure enough, after a quick bench visual to make sure nothing was out of sorts, I took a risk and turned it on. It works fine. So now I am going ahead with a full refurbishment and tune-up.

Although the knobs are ok. I am missing the Pitch Control knob. Therefore I am looking for at least it or a full set of knobs.

Is anyone parting one out an S-40B that can sell me a knob or set?

Thanks in advance.


Just picked up a nice S-40B - looking for a knob set

 

I already have a nice SC-40B (Canadian model built by Rogers), and I just picked up a rather nice S-40B for a song on Facebook Marketplace. Nice cabinet, and nice lettering but was a bit greasy and dirty and smelled of smoke. I have now spent two days giving it a thorough cleaning inside and outside. It now looks great and smells neutral.

The owner said he couldn't turn it on. I suspected he didn't know how since it is a bit tricky turning it on with the tone switch, not the more intuitive send/receive switch. Sure enough, after a quick bench visual to make sure nothing was out of sorts, I took a risk and turned it on. It works fine. So now I am going ahead with a full refurbishment and tune-up.

Although the knobs are ok. I am missing the Pitch Control knob. Therefore I am looking for at least it or a full set of knobs.

Is anyone parting one out an S-40B that can sell me a knob or set?

Thanks in advance.


AM/FM

 

Looking for an Hallicrafters S-55 AM/FM. Anyone got an old s-55 on the back shelf not working, that could use alittle restoration work and would be willing to part with it? I saw a case for one on ebay, but they didn,t have the chassis.
thanks dan


Re: HT37 Audio phase shift network and chassis labeling

 

hi again Tom and Rick and others
sorry to be hijacking the original posting? ,however your info is helpful, but back to my original question about sewing two scans of a wide schematic, i was able scan and cut and paste to make one wide image from two.. but so often i could not rotate? that small bit so that a horizontal line from the left image stayed horizontal etc. If I was serious about copying these two or three page schematics, i guess i could build a support just beside the scanner to hold the manual so that the sheet would be firmly against the top of the bed.. but that would be quite a project. I used to use paint to join two images? but? have not been able using the Paint progam on w10,, I just tried it .

73,,don Va3drl


Re: R-274, SX-73

 

开云体育

I think you are right
? For some reason I was picturing something star shaped, maybe the Bristol .?





-------- Original message --------
From: don Root <drootofallevil@...>
Date: 11/21/22 10:03 AM (GMT-08:00)
Subject: Re: [HallicraftersRadios] R-274, SX-73

Richard , re your first line; my belief is that “spline” is generic term for the trade-name “Bristol” produces, while others produce virtually the same thing. There may be other versions of spline heads, but I am not aware of them, but have not investigated the topic.

If i google “spline set screws”, there are lots of hits for same.

?

Here is a quote from wikip..

Spline socket

The spline socket (alternatively known as Bristo, Bristol, Bristol spline, multiple-spline and fluted) screw drive features four or six .

?

Here is a quote from antiqueradios group?

“Today I chatted it up with the original design company of the infamous Bristol driver and set screw. It seems that while they still make the driver (and have a copyright on the name "Bristol") they do not make the fasteners (set screws). ?Since the Bristol set screw seems to be a standard (albeit old one) for dial knobs on many military radios, they provided me with the name of two companies that still make the fasteners……….”?

?

It is only a wild guess, but I’ll bet that the US army avoids trade names, so? uses “bristow” as a generic for Bristol

Speaking of the wrong tool , I have used lots of Robertson drive screws, with lots of drivers; and when you get to a tough screw one driver often happens to fit just a hair better than the others for a given screw… tolerances make a difference too!

73,, don VA3DRL

?

From: [email protected] [mailto:[email protected]] On Behalf Of Richard Knoppow
Sent: Monday, November 21, 2022 4:58 AM
To: [email protected]
Subject: Re: [HallicraftersRadios] R-274, SX-73

?

Spline is yet another design of socket.? Not the same as Bristol or Allen.? I think spline set screws for knows must be pretty rare.? ?Bristol screws are used by collins, hallicrafters,? and even in a couple of places in the RCA AR88

There are web sites that show all the various kinds of sockets and screw slots.? ?There are a surprising number of them.? Some are pretty easy to wreck if you use the wrong tool.

??????????? BTW many Army tech manuals call them "bristow" screws.? ?It's interesting to speculate about why.

=====trmd

?

?

?

?


Re: R-274, SX-73

 

Hi Tom? and others; I am only speculating that Halli and others used the more common and cheaper Allen heads; but when the contract specifies spline/ bristow/ Bristol, that is what is shipped, so i would bet we would find either on a given radio.
Don VA3DRL


Re: R-274, SX-73

 

开云体育

Richard , re your first line; my belief is that “spline” is generic term for the trade-name “Bristol” produces, while others produce virtually the same thing. There may be other versions of spline heads, but I am not aware of them, but have not investigated the topic.

If i google “spline set screws”, there are lots of hits for same.

?

Here is a quote from wikip..

Spline socket

The spline socket (alternatively known as Bristo, Bristol, Bristol spline, multiple-spline and fluted) screw drive features four or six .

?

Here is a quote from antiqueradios group?

“Today I chatted it up with the original design company of the infamous Bristol driver and set screw. It seems that while they still make the driver (and have a copyright on the name "Bristol") they do not make the fasteners (set screws). ?Since the Bristol set screw seems to be a standard (albeit old one) for dial knobs on many military radios, they provided me with the name of two companies that still make the fasteners……….”?

?

It is only a wild guess, but I’ll bet that the US army avoids trade names, so? uses “bristow” as a generic for Bristol

Speaking of the wrong tool , I have used lots of Robertson drive screws, with lots of drivers; and when you get to a tough screw one driver often happens to fit just a hair better than the others for a given screw… tolerances make a difference too!

73,, don VA3DRL

?

From: [email protected] [mailto:[email protected]] On Behalf Of Richard Knoppow
Sent: Monday, November 21, 2022 4:58 AM
To: [email protected]
Subject: Re: [HallicraftersRadios] R-274, SX-73

?

Spline is yet another design of socket.? Not the same as Bristol or Allen.? I think spline set screws for knows must be pretty rare.? ?Bristol screws are used by collins, hallicrafters,? and even in a couple of places in the RCA AR88

There are web sites that show all the various kinds of sockets and screw slots.? ?There are a surprising number of them.? Some are pretty easy to wreck if you use the wrong tool.

??????????? BTW many Army tech manuals call them "bristow" screws.? ?It's interesting to speculate about why.

=====trmd

?

?

?

?


Re: R-274, SX-73 Re: SPLINE WRENCHES

 
Edited

开云体育

Max-Gain sells a kit that has a tool to fit all of the Hallicrafters knob and shaft coupling set screws.









?Walt Cates, WD0GOF
?
Your past has no control over your future. Only your NOW can impact your future.




From: [email protected] <[email protected]> on behalf of don Root <drootofallevil@...>
Sent: Monday, November 21, 2022 2:00 AM
To: [email protected] <[email protected]>
Subject: Re: [HallicraftersRadios] R-274, SX-73
?

HI ALL…? is there a list of all Halli models that use spline set screws? ..would be good to know before you mess up the screw head.

Don ??VA3DRL

?

?



Re: R-274, SX-73

 

I don't know about this - my R274 has allen head screws in the main tuning knob. could be replacements? I don't know, but they are Allens.

Tom
W3TA



-----Original Message-----
From: qanthony87 <aquinn50@...>
To: [email protected]
Sent: Sun, Nov 20, 2022 9:16 pm
Subject: Re: [HallicraftersRadios] R-274, SX-73

Bristol Wrenches
?
?
?
From: [email protected] <[email protected]> On Behalf Of Lee Bahr
Sent: Sunday, November 20, 2022 6:27 PM
To: [email protected]
Subject: Re: [HallicraftersRadios] R-274, SX-73
?
I have the same problem right now with another Hallicrafters radio.? Hallicrafters used Bristle Head and not Allen Head.? So you needed a Bristle wrench and not an Allen wrench.? Not knowing this, many users tried removing the knobs with Allen wrenches and then when that did not work, tried using whatever destructive tool they had in their shop.? Then you wound up with set screws with flat heads and they set screws could not be removed.? In my case, I am going to buy a cheap set of left hand drills used to remove problematic set screws.? Not sure this will always work, but it's worth a try.?
Lee, w0vt
On 11/20/2022 5:42 PM, =R= wrote:
Hi KL,
?
It just so happens I have an SX-73 on the bench right now. The bad news is that it is in the shop where I am not- I’m 6 hours away for the holiday. If you can’t get an answer sooner, I’ll be back the week of December 4th and can look into the knob issue.
?
Meanwhile, I have a question for you: My receiver had a busted filament regulator bulb. The manual gives no details about manufacturers part or specifications. I subbed a random part that happens to fit exactly, but I’m pretty sure it is the wrong resistance. Can you provide any details.
?
Thanks,
=Randy=
WB6MAI?


On Nov 20, 2022, at 1:53 PM, Kihwal Lee via groups.io <kihwal@...> wrote:
?
Hi,
?
I am in the process of repairing a long neglected R-274. I want to remove the front panel, but the tuning knob won't come off even after removing the two set screws.? Any ideas? I see a small hole in the black plastic part, but couldn't figure out whether there is another set screw. Nothing would fit.
?
73
Kihwal
K9SUL


Re: R-274, SX-73

 

开云体育

Spline is yet another design of socket.? Not the same as Bristol or Allen.? I think spline set screws for knows must be pretty rare.? ?Bristol screws are used by collins, hallicrafters,? and even in a couple of places in the RCA AR88
There are web sites that show all the various kinds of sockets and screw slots.? ?There are a surprising number of them.? Some are pretty easy to wreck if you use the wrong tool.
BTW many Army tech manuals call them "bristow" screws.? ?It's interesting to speculate about why.




-------- Original message --------
From: don Root <drootofallevil@...>
Date: 11/21/22 12:01 AM (GMT-08:00)
Subject: Re: [HallicraftersRadios] R-274, SX-73

HI ALL…? is there a list of all Halli models that use spline set screws? ..would be good to know before you mess up the screw head.

Don ??VA3DRL

?

?

From: [email protected] [mailto:[email protected]] On Behalf Of Richard Knoppow
Sent: Sunday, November 20, 2022 9:45 PM
To: [email protected]
Subject: Re: [HallicraftersRadios] R-274, SX-73

?

Bristol is still in business.? ?Also, exelite makes sets of screwdriver type Bristol wrenches.? They are more expensive than the L wrenches but can reach places the L wrenches can't go.? You really need both kinds.?

?

?

?

?

?

-------- Original message --------

From: qanthony87 <aquinn50@...>

Date: 11/20/22 6:16 PM (GMT-08:00)

Subject: Re: [HallicraftersRadios] R-274, SX-73

?

Bristol Wrenches

?

?

?

From: [email protected] <[email protected]> On Behalf Of Lee Bahr
Sent: Sunday, November 20, 2022 6:27 PM
To: [email protected]
Subject: Re: [HallicraftersRadios] R-274, SX-73

?

I have the same problem right now with another Hallicrafters radio.? Hallicrafters used Bristle Head and not Allen Head.? So you needed a Bristle wrench and not an Allen wrench.? Not knowing this, many users tried removing the knobs with Allen wrenches and then when that did not work, tried using whatever destructive tool they had in their shop.? Then you wound up with set screws with flat heads and they set screws could not be removed.? In my case, I am going to buy a cheap set of left hand drills used to remove problematic set screws.? Not sure this will always work, but it's worth a try.?

Lee, w0vt

On 11/20/2022 5:42 PM, =R= wrote:

Hi KL,

?

It just so happens I have an SX-73 on the bench right now. The bad news is that it is in the shop where I am not- I’m 6 hours away for the holiday. If you can’t get an answer sooner, I’ll be back the week of December 4th and can look into the knob issue.

?

Meanwhile, I have a question for you: My receiver had a busted filament regulator bulb. The manual gives no details about manufacturers part or specifications. I subbed a random part that happens to fit exactly, but I’m pretty sure it is the wrong resistance. Can you provide any details.

?

Thanks,

=Randy=

WB6MAI?

?

On Nov 20, 2022, at 1:53 PM, Kihwal Lee via groups.io <kihwal@...> wrote:

?

Hi,

?

I am in the process of repairing a long neglected R-274. I want to remove the front panel, but the tuning knob won't come off even after removing the two set screws.? Any ideas? I see a small hole in the black plastic part, but couldn't figure out whether there is another set screw. Nothing would fit.

?

73

Kihwal

K9SUL


Re: HT37 Audio phase shift network and chassis labeling

 

WHAT I HAVE USED? will do 1 degree, but matching lines from a wide schematic needs? finer adjustment.
don?? VA3DRL


Re: R-274, SX-73

 

开云体育

HI ALL…? is there a list of all Halli models that use spline set screws? ..would be good to know before you mess up the screw head.

Don ??VA3DRL

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From: [email protected] [mailto:[email protected]] On Behalf Of Richard Knoppow
Sent: Sunday, November 20, 2022 9:45 PM
To: [email protected]
Subject: Re: [HallicraftersRadios] R-274, SX-73

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Bristol is still in business.? ?Also, exelite makes sets of screwdriver type Bristol wrenches.? They are more expensive than the L wrenches but can reach places the L wrenches can't go.? You really need both kinds.?

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-------- Original message --------

From: qanthony87 <aquinn50@...>

Date: 11/20/22 6:16 PM (GMT-08:00)

Subject: Re: [HallicraftersRadios] R-274, SX-73

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Bristol Wrenches

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From: [email protected] <[email protected]> On Behalf Of Lee Bahr
Sent: Sunday, November 20, 2022 6:27 PM
To: [email protected]
Subject: Re: [HallicraftersRadios] R-274, SX-73

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I have the same problem right now with another Hallicrafters radio.? Hallicrafters used Bristle Head and not Allen Head.? So you needed a Bristle wrench and not an Allen wrench.? Not knowing this, many users tried removing the knobs with Allen wrenches and then when that did not work, tried using whatever destructive tool they had in their shop.? Then you wound up with set screws with flat heads and they set screws could not be removed.? In my case, I am going to buy a cheap set of left hand drills used to remove problematic set screws.? Not sure this will always work, but it's worth a try.?

Lee, w0vt

On 11/20/2022 5:42 PM, =R= wrote:

Hi KL,

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It just so happens I have an SX-73 on the bench right now. The bad news is that it is in the shop where I am not- I’m 6 hours away for the holiday. If you can’t get an answer sooner, I’ll be back the week of December 4th and can look into the knob issue.

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Meanwhile, I have a question for you: My receiver had a busted filament regulator bulb. The manual gives no details about manufacturers part or specifications. I subbed a random part that happens to fit exactly, but I’m pretty sure it is the wrong resistance. Can you provide any details.

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Thanks,

=Randy=

WB6MAI?

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On Nov 20, 2022, at 1:53 PM, Kihwal Lee via groups.io <kihwal@...> wrote:

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Hi,

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I am in the process of repairing a long neglected R-274. I want to remove the front panel, but the tuning knob won't come off even after removing the two set screws.? Any ideas? I see a small hole in the black plastic part, but couldn't figure out whether there is another set screw. Nothing would fit.

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73

Kihwal

K9SUL