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Re: Hallicrafters group storage space
Mike Thanks for the replay, much appreciated.? Yes, we both appear to have similar interests and we post to several groups in common over these last 30 odd years.? We might have even rubbed elbows at some hamfests on the east coast and at NJARC club events.
Back in the early years of these groups, computer memory and dial-up connections limited discussions.? Now these issues are trivial, digital memory is cheap and internet connections are quite fast.? It just seems easier for me to leave past comments in the post then to go back and research what was discussed in the past.??
This last discussion about testing the power transformer in the HT-37 brought up some fine points on oscilloscope measurements.? Having to cut and paste images that were deleted in the exchange kind of slowed down the discussion.? So when a measurement shows current leading voltage in an coil this contradicts basic AC theory, as I understand it, and I feel obligated to ask more questions.
In my career I have occasionally taught at vo-techs in New Jersey and here in Arkansas.? Besides polishing up math skills, I would spend a lot of time trying to get a message across that contradicts what the student was taught earlier.? This usually starts when AC circuit theory is taught.? The concept of electrostatic fields is not much of a problem but the idea of opposing a change in current using a magnetic field can be challenging.? Well, obviously it still is.
I guess my issue is with "common knowledge" which never seems to hold up to any scrutiny.? Two additional pet peeves are the AC line voltage that appears to be increasing over time and being electrocuted by your S-38 or any other AA5 radio.? While there may be a kernel of truth in both, the story is much more complicated but interesting, none the less. Regards, Jim Logic: Method used to arrive at the wrong conclusion, with confidence.? Murphy
Jim – I do not see how that is possible. I see your name more than any other on numerous posts and numerous groups. Obviously you remember what has been said as you answer every time, even when there has been a resolution. – Mike ? Mike B. Feher, N4FS 89 Arnold Blvd. Howell NJ 07731 908-902-3831 ?
From: [email protected] < [email protected]> On Behalf Of Jim Whartenby via groups.io Sent: Wednesday, July 31, 2024 3:07 AM To: [email protected]Subject: [HallicraftersRadios] Hallicrafters group storage space ? Fair to say that after some 20 years of use, this group is using perhaps 1GB of the 30GB allotted?? Perhaps some dos and don'ts on group posting etiquette from the boss? I ask this since some posters eliminate the original thread which makes it difficult, at least for me, to remember what has been said in previous posts within the same thread.
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Re: S-38B Tuning Shaft Query
Yea and now that the 1940s,? 50s, etc have past most people have polarized outlets, so you now can polarize the plug properly, so you don’t get a hot chassis. ?
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From: [email protected] [mailto:[email protected]] On Behalf Of Maynard Wright, P. E., W6PAP via groups.io
Sent: Wednesday, July 31, 2024 10:27 AM
To: [email protected]
Subject: Re: [HallicraftersRadios] S-38B Tuning Shaft Query? Yes, reversal of the plug should move the chassis to the same potential
as the neutral lead, which may or may not be at zero volts depending on
how much current is flowing to other devices on the same branch circuit.
That voltage should, though, be very low.
73,
Maynard
W6PAP
?? -- don??? va3drl
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Re: Hallicrafters group storage space
No seconder to that sort of comment here ?
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From: [email protected] [mailto:[email protected]] On Behalf Of Mike Feher
Sent: Wednesday, July 31, 2024 6:00 AM
To: [email protected]
Subject: Re: [HallicraftersRadios] Hallicrafters group storage space? Jim – I do not see how that is possible. I see your name more than any other on numerous posts and numerous groups. Obviously you remember what has been said as you answer every time, even when there has been a resolution. – Mike ? Mike B. Feher, N4FS 89 Arnold Blvd. Howell NJ 07731 908-902-3831 ? ? Fair to say that after some 20 years of use, this group is using perhaps 1GB of the 30GB allotted?? Perhaps some dos and don'ts on group posting etiquette from the boss? I ask this since some posters eliminate the original thread which makes it difficult, at least for me, to remember what has been said in previous posts within the same thread. -- don??? va3drl
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Re: S-38B Tuning Shaft Query
I am 83. Your problem with low frequencies is a new one to me, I
will research it.
Hearing loss has profound effects. It affects social intercourse and
general awareness of the world you live in. I was not aware of just how
profound its effects were until I began to lose my hearing.
I used conventional hearing aids for some time but they began to be
less effective and eventually were of no use. It was then that cochlear
implants were suggested. So, I now have an implant. It is too soon for
me to know if they will work for me. I may not know for months. I hope
it does because to the degree that they work they have made a difference.
In your wife's case, if by channel to her brain you mean the
auditory nerve, I don't know what remedy there is for this, if any.
Cochlear implants rely on the auditory nerve. They substitute for the
"hair cells" in the cochlea that convert sound to electrical signals
that are then transmitted to the brain via the auditory nerve. If the
nerve is not functional then the implants will not function. There may
be something else. I am not an expert by any means but I would certainly
investigate whatever hearing research is being done that might be of help.
This is very OT here except that radios require hearing (mostly) and
I think it is a subject that affects everyone.
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On 7/31/2024 7:37 AM, Maynard Wright, P. E., W6PAP via groups.io wrote: I hear reasonably well at 81, I think, but I have become sensitive to
lower frequencies and if a performance uses heavy bass I have to use
earplugs or leave to avoid pain.
My wife uses hearing aids and I sometimes get wrong whether she has them
in her ears and I yell when I should whisper or vice versa.
This morning she put her hearing aids in late and thought that the fan I
usually turn on was off and she fumbled around a bit since things that
she normally determines by hearing them were unavailable to her. So I
can understand why you say that those of us without hearing difficulties
may not realize how much it matters.
One thing of interest is that, after some extensive tests, part of my
wife's hearing difficulty is in the channel from her ears to her brain
and the hearing aids won't fix that. I can enjoy listening to music
from a short wave station that is a bit contaminated by noise and my
wife won't be able to determine that the noise she hears is music.
73,
Maynard
W6PAP
--
Richard Knoppow
Los Angeles
WB6KBL
SKCC 19998
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Re: S-38B Tuning Shaft Query
I hear reasonably well at 81, I think, but I have become sensitive to
lower frequencies and if a performance uses heavy bass I have to use
earplugs or leave to avoid pain.
My wife uses hearing aids and I sometimes get wrong whether she has them
in her ears and I yell when I should whisper or vice versa.
This morning she put her hearing aids in late and thought that the fan I
usually turn on was off and she fumbled around a bit since things that
she normally determines by hearing them were unavailable to her. So I
can understand why you say that those of us without hearing difficulties
may not realize how much it matters.
One thing of interest is that, after some extensive tests, part of my
wife's hearing difficulty is in the channel from her ears to her brain
and the hearing aids won't fix that. I can enjoy listening to music
from a short wave station that is a bit contaminated by noise and my
wife won't be able to determine that the noise she hears is music.
73,
Maynard
W6PAP
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On 7/30/24 22:12, Richard Knoppow wrote: Tell me about it! A very long time ago I began to have trouble
remembering names. Never forgot anything but was sometimes very slow on
remembering. Has gotten worse. I asked my doctor if I was getting
dementia, he just laughed. What I find fascinating is that its much more
likely when I am speaking than when I am writing. I have discovered that
when I write I have a much larger vocabulary than when I speak. Perhaps
it is an effect of my deafness. Now that I have a cochlear implant
perhaps it will improve. I am still learning how to use it. Some
recipients report being able to hear clearly as soon as theirs is
activated, some report having a long struggle; I seem to be one of the
latter. Nonetheless, it does seem to work and I will keep at it.
Being deaf is awful! Hearing people just don't get it! If you are
blind or have a missing leg or something people will make adjustments;
If you are deaf people say "No Problem" and keep going as though you
could hear the tiniest pin drop. I once had exceptionally good hearing
and never realized just how big a disability deafness is.
Well, I am babbling in public and will stop now.
On 7/30/2024 7:05 PM, Justin Bowser - KI5GKD wrote:
Yeah, the older I get the more often I'm afflicted with
brain-farts... :-\
--
Justin B.
KI5GKD
--
Richard Knoppow
Los Angeles
WB6KBL
SKCC 19998
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Re: S-38B Tuning Shaft Query
Yes, reversal of the plug should move the chassis to the same potential
as the neutral lead, which may or may not be at zero volts depending on
how much current is flowing to other devices on the same branch circuit.
That voltage should, though, be very low.
73,
Maynard
W6PAP
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On 7/30/24 23:38, Jim Whartenby via groups.io wrote: If one does feel a shock, reversing the AC line plug should eliminate
the problem, shouldn't it?? In the S-38B this current is below 5mA which
is the threshold of the GFCI outlet.
Logic: Method used to arrive at the wrong conclusion, with confidence.
Murphy
On Tuesday, July 30, 2024 at 11:06:35 PM CDT, Maynard Wright, P. E.,
W6PAP via groups.io <ma.wright@...> wrote:
On mine, the set screws are almost flush with the surface of the knob
flutes when tightened. Since those set screws are connected to the
chassis, meaning a metal shaft, it might be possible to receive a shock
by pressing your finger tightly on the set screw hole.
I don't plan to test that and I have no idea whether or not the screws
are the originals or some longer ones that someone used sometime in the
past.
73,
Maynard
W6PAP
On 7/30/24 16:07, don Root wrote:
Re /_It does have aluminum shafts_/. But, a well insulated knob; at
least on day one?
*From:*[email protected]
[mailto:[email protected]] *On Behalf Of *Richard Knoppow
*Sent:* Tuesday, July 30, 2024 6:54 PM
*To:* [email protected]; ma.wright@...
*Subject:* Re: [HallicraftersRadios] S-38B Tuning Shaft Query
I have an S-38 awaiting rebuild. It does have aluminum shafts.
--
Richard Knoppow
--
don??? va3drl
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Re: Very Nice 8R-40 Incoming!
It looks to be in nice shape. Good luck with it. It looks like an S40B with a 5R10 dial on it, minus the BFO.
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Re: Hallicrafters group storage space
Jim – I do not see how that is possible. I see your name more than any other on numerous posts and numerous groups. Obviously you remember what has been said as you answer every time, even when there has been a resolution. – Mike ? Mike B. Feher, N4FS 89 Arnold Blvd. Howell NJ 07731 908-902-3831 ?
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From: [email protected] < [email protected]> On Behalf Of Jim Whartenby via groups.io Sent: Wednesday, July 31, 2024 3:07 AM To: [email protected]Subject: [HallicraftersRadios] Hallicrafters group storage space ? Fair to say that after some 20 years of use, this group is using perhaps 1GB of the 30GB allotted?? Perhaps some dos and don'ts on group posting etiquette from the boss? I ask this since some posters eliminate the original thread which makes it difficult, at least for me, to remember what has been said in previous posts within the same thread.
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Re: S-38B Tuning Shaft Query
Motion seconded
Tom Latimer (no cochlear implant yet, deafness and tinnitus)
On July 31, 2024 1:12:40 AM EDT, Richard Knoppow <1oldlens1@...> wrote:
Tell me about it! A very long time ago I began to have trouble
remembering names. Never forgot anything but was sometimes very slow on
remembering. Has gotten worse. I asked my doctor if I was getting
dementia, he just laughed. What I find fascinating is that its much more
likely when I am speaking than when I am writing. I have discovered that
when I write I have a much larger vocabulary than when I speak. Perhaps
it is an effect of my deafness. Now that I have a cochlear implant
perhaps it will improve. I am still learning how to use it. Some
recipients report being able to hear clearly as soon as theirs is
activated, some report having a long struggle; I seem to be one of the
latter. Nonetheless, it does seem to work and I will keep at it.
Being deaf is awful! Hearing people just don't get it! If you are
blind or have a missing leg or something people will make adjustments;
If you are deaf people say "No Problem" and keep going as though you
could hear the tiniest pin drop. I once had exceptionally good hearing
and never realized just how big a disability deafness is.
Well, I am babbling in public and will stop now.
On 7/30/2024 7:05 PM, Justin Bowser - KI5GKD wrote:
Yeah, the older I get the more often I'm afflicted with brain-farts... :-\
--
Justin B
KI5GKD
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Re: Hallicrafters group storage space
From another group… Messages to the?Group: Please make the 'Subject' line reflective of?the content of the message, especially if you are answering a?digest mode post. If you are looking to sell, buy, or swap items, please use the following prefixes:? For Sale (FS), Wanted To Buy (WTB), and For Swap (FS)
Members are asked to make sure that they "sign" their?posts and don't leave them effectively anonymous; the identity of the sender is not always apparent from the?Groups.io ID that appears. It is discourteous to the membership as a whole, and while we don't want to have to reject messages because their originators have failed to put their names (and where issued, amateur callsign) after their posts we might have to review this, particularly if "persistent offenders" come to light.
Please trim your posts. It is not necessary to repeat the entire thread with every response. This applies especially to readers of Digest mode posts.
Paragraphs, punctuation, complete sentences, and correct spelling?are appreciated. You are not being charged by the word! You can include clickable links to other sites in?your posts.
Well jim, I don’t even know who or what some posts relate to, since some replies don’t mention who all is the intended recipient nor any clue as to the statement being targeted. ?There are other aspects too, but it is hard to generalize.? As to email or on line, it’s much easier to ?fix the writhing in e-mail, and to have a larger window and to add other features, but on-line is the only way to run down all the stuff and search a bit too. ?
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From: [email protected] [mailto:[email protected]] On Behalf Of Jim Whartenby via groups.io
Sent: Wednesday, July 31, 2024 3:07 AM
To: [email protected]
Subject: [HallicraftersRadios] Hallicrafters group storage space? Fair to say that after some 20 years of use, this group is using perhaps 1GB of the 30GB allotted?? Perhaps some dos and don'ts on group posting etiquette from the boss? I ask this since some posters eliminate the original thread which makes it difficult, at least for me, to remember what has been said in previous posts within the same thread. -- don??? va3drl
|
Locked
Hallicrafters group storage space
Fair to say that after some 20 years of use, this group is using perhaps 1GB of the 30GB allotted?? Perhaps some dos and don'ts on group posting etiquette from the boss?
I ask this since some posters eliminate the original thread which makes it difficult, at least for me, to remember what has been said in previous posts within the same thread.
Jim
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Re: S-38B Tuning Shaft Query
If one does feel a shock, reversing the AC line plug should eliminate the problem, shouldn't it?? In the S-38B this current is below 5mA which is the threshold of the GFCI outlet.
Logic: Method used to arrive at the wrong conclusion, with confidence.? Murphy
On mine, the set screws are almost flush with the surface of the knob
flutes when tightened. Since those set screws are connected to the
chassis, meaning a metal shaft, it might be possible to receive a shock
by pressing your finger tightly on the set screw hole.
I don't plan to test that and I have no idea whether or not the screws
are the originals or some longer ones that someone used sometime in the
past.
73,
Maynard
W6PAP
On 7/30/24 16:07, don Root wrote: Re /_It does have aluminum shafts_/. But, a well insulated knob; at
least on day one?
*From:*[email protected]
[mailto:[email protected]] *On Behalf Of *Richard Knoppow
*Sent:* Tuesday, July 30, 2024 6:54 PM
*To:* [email protected]; ma.wright@...
*Subject:* Re: [HallicraftersRadios] S-38B Tuning Shaft Query
I have an S-38 awaiting rebuild. It does have aluminum shafts.
--
Richard Knoppow
--
don??? va3drl
|
Re: S-38B Tuning Shaft Query
Tell me about it! A very long time ago I began to have trouble
remembering names. Never forgot anything but was sometimes very slow on
remembering. Has gotten worse. I asked my doctor if I was getting
dementia, he just laughed. What I find fascinating is that its much more
likely when I am speaking than when I am writing. I have discovered that
when I write I have a much larger vocabulary than when I speak. Perhaps
it is an effect of my deafness. Now that I have a cochlear implant
perhaps it will improve. I am still learning how to use it. Some
recipients report being able to hear clearly as soon as theirs is
activated, some report having a long struggle; I seem to be one of the
latter. Nonetheless, it does seem to work and I will keep at it.
Being deaf is awful! Hearing people just don't get it! If you are
blind or have a missing leg or something people will make adjustments;
If you are deaf people say "No Problem" and keep going as though you
could hear the tiniest pin drop. I once had exceptionally good hearing
and never realized just how big a disability deafness is.
Well, I am babbling in public and will stop now.
toggle quoted message
Show quoted text
On 7/30/2024 7:05 PM, Justin Bowser - KI5GKD wrote: Yeah, the older I get the more often I'm afflicted with brain-farts... :-\
--
Justin B.
KI5GKD
--
Richard Knoppow
Los Angeles
WB6KBL
SKCC 19998
|
Re: S-38B Tuning Shaft Query
In general, I've had trouble finding original Hallicrafters knobs.
They are a unique design or rather several designs. On the S-38 and some
other receivers, like the S-40 series, there were tuning knobs that look
similar but have differences, for instance the metal rings that are on
some but not others. Another toughy to find is the BFO knob on the
original S-38, also used on the S-40/A and maybe others. This fits on a
1/8th inch threaded shaft and has a stop that fits a tab on the cabinet.
I have had to makeshift them from standard small H knobs. Also, H used
slotted set screws on some knobs and Bristol head on others. One learns
not to expect consistency in older H gear.
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On 7/30/2024 7:43 PM, Maynard Wright, P. E., W6PAP via groups.io wrote: On mine, the set screws are almost flush with the surface of the knob
flutes when tightened. Since those set screws are connected to the
chassis, meaning a metal shaft, it might be possible to receive a shock
by pressing your finger tightly on the set screw hole.
I don't plan to test that and I have no idea whether or not the screws
are the originals or some longer ones that someone used sometime in the
past.
73,
Maynard
W6PAP
--
Richard Knoppow
Los Angeles
WB6KBL
SKCC 19998
|
Re: S-38B Tuning Shaft Query
On mine, the set screws are almost flush with the surface of the knob
flutes when tightened. Since those set screws are connected to the
chassis, meaning a metal shaft, it might be possible to receive a shock
by pressing your finger tightly on the set screw hole.
I don't plan to test that and I have no idea whether or not the screws
are the originals or some longer ones that someone used sometime in the
past.
73,
Maynard
W6PAP
toggle quoted message
Show quoted text
On 7/30/24 16:07, don Root wrote: Re /_It does have aluminum shafts_/. But, a well insulated knob; at
least on day one?
*From:*[email protected]
[mailto:[email protected]] *On Behalf Of *Richard Knoppow
*Sent:* Tuesday, July 30, 2024 6:54 PM
*To:* [email protected]; ma.wright@...
*Subject:* Re: [HallicraftersRadios] S-38B Tuning Shaft Query
I have an S-38 awaiting rebuild. It does have aluminum shafts.
--
Richard Knoppow
--
don??? va3drl
|
Re: S-38B Tuning Shaft Query
Yeah, the older I get the more often I'm afflicted with brain-farts... :-\
--
Justin B.
KI5GKD
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Re: HT-37 transformer failure due to rapid STBY-->OFF-->STBY
Halden, I hijacked your 3 pix and piled them up so voltages superimposed, now you can see them all together with a bit of imagination. A little more work, and I might get all the blue, but I was surprised to get it even this good. I had no problem realizing the 180 phase shift, just by looking at time zero. ? ? -- don??? va3drl
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Re: S-38B Tuning Shaft Query
Or fat fingers. I have to read stuff carefully before sending it to
avoid saying nonsense. Even so I don't always see it.
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On 7/30/2024 4:31 PM, Justin Bowser - KI5GKD wrote: D'oh!? Yeah, aluminum shaft and plastic knob.? Had another brain-fart...
--
Justin B.
KI5GKD _._,_._,_
--
Richard Knoppow
Los Angeles
WB6KBL
SKCC 19998
|
Re: S-38B Tuning Shaft Query
The knob is insulated but its still possible to contact the set
screws although they are pretty deeply buried. The shaft can still
contact the cabinet if they are not centered in the holes. I think
Hallicrafters was just being extra careful to prevent shock hazards.
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On 7/30/2024 4:07 PM, don Root wrote: Re /_It does have aluminum shafts_/. But, a well insulated knob; at
least on day one?
--
Richard Knoppow
Los Angeles
WB6KBL
SKCC 19998
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Re: S-38B Tuning Shaft Query
D'oh!? Yeah, aluminum shaft and plastic knob.? Had another brain-fart...
--
Justin B.
KI5GKD
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Jim Whartenby
don Root