The face is similar but the cabinet is wrong. The cabinet on mine
has the screen top that is hinged at the rear. The SX62 still had
the screen top on the cabinet.
On 11/11/2022 3:26 PM, Robert Eckweiler
wrote:
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Happened to be watching an old episode of 77 Sunset Strip (I
believe the episode was Season 5 Episode 27 titled "Target
Island") and in it was what I believe is an SX-42 receiver. It was
up close. Attached is a screen shot I was fast enough to snap with
my phone.
Later on they showed a Heathkit GW-10 CB radio in the same
episode.
Bob, AF6C
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Good eye, and quick fingers!
Marc-k7wxk?
On Fri, Nov 11, 2022, 3:26 PM Robert Eckweiler < af6c@...> wrote: Happened to be watching an old episode of 77 Sunset Strip (I believe the episode was Season 5 Episode 27 titled "Target Island") and in it was what I believe is an SX-42 receiver. It was up close. Attached is a screen shot I was fast enough to snap with my phone.
Later on they showed a Heathkit GW-10 CB radio in the same episode.
Bob, AF6C
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Wrong knobs, but great radio (and you have quick reactions!) :-)
John K5MO
On Fri, Nov 11, 2022 at 6:44 PM Ken Stinson < Kenst@...> wrote: It looked Good then and it still looks Good Now!
Great picture. Thank You!
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It looked Good then and it still looks Good Now!
Great picture. Thank You!
|
Happened to be watching an old episode of 77 Sunset Strip (I believe the episode was Season 5 Episode 27 titled "Target Island") and in it was what I believe is an SX-42 receiver. It was up close. Attached is a screen shot I was fast enough to snap with my phone.
Later on they showed a Heathkit GW-10 CB radio in the same episode.
Bob, AF6C
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Re: SX-110 Alignment Puzzle
Very nice.? ?As I thought the crystal filter is a throw back.tp the original Lamb filter.? The idea of single signal was to eliminate the audio image on cw.? The original filter worked at one setting of The phasing control .? When the bandwidth was changed the phasing control had to be readjusted.?
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-------- Original message -------- From: "KW4H via groups.io" <reedsteve@...> Date: 11/10/22 7:06 PM (GMT-08:00) Subject: Re: [HallicraftersRadios] SX-110 Alignment Puzzle
Attached is the entire SX-110 manual in PDF format.? This is a scan I did myself – it’s much clearer than the one over on BAMA. ? 73 – Steve, KW4H ? I wanted to look at the handbook at bama. May have it on my other computer .? I will look for your attachment.? Pretty dire this thing will do png -------- Original message -------- From: don Root <drootofallevil@...> Date: 11/10/22 2:12 PM (GMT-08:00) Subject: Re: [HallicraftersRadios] SX-110 Alignment Puzzle Richard, Steve etc too; ??the attachment that Steve sent is a .png .. pretty common now ; don’t see any djvu and it opens well here and is readable. The attachment is the specific alignment procedure for the sx-110 I presume. IF you read it, you can address the question more specifically I save it as a .jpg and attached try that. 73,,? Don VA3DRL ? ? I can't open deja vu on my cell phone. Most receivers with single crystal filters adjust the IF to the crystal frequency.? ?A very few,? like the Collins 51J series need to have an exact IF frequency due to the way the tuning is done but this is very rare.?? Despite the discussion about signal generator calibration and stability it should be possible to align a simple IF with a service grade generator.? The crystal establishes the frequency. Since the overall bandwidth of the IF is considerably wider than the crystal great precision is not necessary.?? In most cases the crystal stage will have input tuning, a loading adjustment to set broadest crystal bandwidth, and maybe a neutralizing adjustment to center the phasing notch.?? Some earlier receivers have essentially a fixed crystal bandwidth and fixed phasing adjustment.? These use the original Lamb circuit.? The adjustment procedure is rather different from the later Hammarlund type filter.? Can be confusing but I don't think the earlier filter was used after aboutb1950.
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Re: SX-110 Alignment Puzzle
Attached is the entire SX-110 manual in PDF format.? This is a scan I did myself – it’s much clearer than the one over on BAMA. ? 73 – Steve, KW4H ? I wanted to look at the handbook at bama. May have it on my other computer .? I will look for your attachment.? Pretty dire this thing will do png
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-------- Original message --------From: don Root <drootofallevil@...> Date: 11/10/22 2:12 PM (GMT-08:00) Subject: Re: [HallicraftersRadios] SX-110 Alignment Puzzle Richard, Steve etc too; ??the attachment that Steve sent is a .png .. pretty common now ; don’t see any djvu and it opens well here and is readable. The attachment is the specific alignment procedure for the sx-110 I presume. IF you read it, you can address the question more specifically I save it as a .jpg and attached try that. 73,,? Don VA3DRL ? ? I can't open deja vu on my cell phone. Most receivers with single crystal filters adjust the IF to the crystal frequency.? ?A very few,? like the Collins 51J series need to have an exact IF frequency due to the way the tuning is done but this is very rare.?? Despite the discussion about signal generator calibration and stability it should be possible to align a simple IF with a service grade generator.? The crystal establishes the frequency. Since the overall bandwidth of the IF is considerably wider than the crystal great precision is not necessary.?? In most cases the crystal stage will have input tuning, a loading adjustment to set broadest crystal bandwidth, and maybe a neutralizing adjustment to center the phasing notch.?? Some earlier receivers have essentially a fixed crystal bandwidth and fixed phasing adjustment.? These use the original Lamb circuit.? The adjustment procedure is rather different from the later Hammarlund type filter.? Can be confusing but I don't think the earlier filter was used after aboutb1950.
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Re: SX-110 Alignment Puzzle
I wanted to look at the handbook at bama. May have it on my other computer .? I will look for your attachment.? Pretty dire this thing will do png
toggle quoted message
Show quoted text
-------- Original message -------- From: don Root <drootofallevil@...> Date: 11/10/22 2:12 PM (GMT-08:00) Subject: Re: [HallicraftersRadios] SX-110 Alignment Puzzle
Richard, Steve etc too; ??the attachment that Steve sent is a .png .. pretty common now ; don’t see any djvu and it opens well here and is readable. The attachment is the specific alignment procedure for the sx-110 I presume. IF you read it, you can address the question more specifically I save it as a .jpg and attached try that. 73,,? Don VA3DRL ? ? I can't open deja vu on my cell phone. Most receivers with single crystal filters adjust the IF to the crystal frequency.? ?A very few,? like the Collins 51J series need to have an exact IF frequency due to the way the tuning is done but this is very rare.?? Despite the discussion about signal generator calibration and stability it should be possible to align a simple IF with a service grade generator.? The crystal establishes the frequency. Since the overall bandwidth of the IF is considerably wider than the crystal great precision is not necessary.?? In most cases the crystal stage will have input tuning, a loading adjustment to set broadest crystal bandwidth, and maybe a neutralizing adjustment to center the phasing notch.?? Some earlier receivers have essentially a fixed crystal bandwidth and fixed phasing adjustment.? These use the original Lamb circuit.? The adjustment procedure is rather different from the later Hammarlund type filter.? Can be confusing but I don't think the earlier filter was used after aboutb1950.
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RF deck and
oscillator / mixer module
?
Removed from sad but
working SX-101
?
$25 plus
shipping
?
No paypal, zelle,
etc......
?
Cash,
check
?
Tom
W3TA
|
FS SX-101 Power Transformer
Removed from sad but
working SX-101.
?
$25 plus
shipping
?
No paypal, zelle,
etc....
?
Cash or
check
?
Tom
W3TA
|
No longer have an
HT-32 to support so my spare parts need a new home. What you see is what you
get, no guarentee on function.
?
Sold as a lot
only.
?
$40 plus
shipping
?
?
I also have a nice
HT-32 front panel. $20 plus shipping
?
?
No paypal or Zelle.
Cash or check
?
Tom
W3TA
?
?
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Re: SX-110 Alignment Puzzle
Steve:? what you wrote sounds consistent and more accurate than words in the manual. My guess is that the notch you first got is the “parallel resonant frequency” of the crystal which should be a bit higher than the “series resonant frequency” which you get at step 3. ?I am an onlooker, but surprised that it is a whole KC lower. Keep on the good work Steve. 73,,? Don VA3DRL ? ?
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From: [email protected] [mailto:[email protected]] On Behalf Of KW4H via groups.io
Sent: Thursday, November 10, 2022 6:29 PM
To: [email protected]
Subject: Re: [HallicraftersRadios] SX-110 Alignment Puzzle? Thanks all for the replies.? Well, this afternoon I went through the IF alignment procedure again.? The null was reconfirmed as at 456.380.? Moving on to step 3, I switched the selectivity to sharp, but this time adjusted the signal generator frequency for the maximum output, rather than left the generator at 456.380.? The peak was at 455.380.? I then re-peaked all the other adjustments at that frequency (leaving the first one alone).? The SX-110 appears to be working fine, and the crystal filter seems to be operating as it should (or close enough).? The main source of confusion in Hallicrafters’ alignment instructions is the “NOTE” just below step 2 – adjustment “A” is not really adjusted to “the frequency of the crystal”.? It’s aligned to the frequency of the notch that may be located above or below the actual crystal frequency.? From step 3 onward, the adjustments are for the actual, exact crystal frequency.? At least, that’s how I read it at this point. ? 73 – Steve, KW4H ======trnd ? ?
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Re: SX-110 Alignment Puzzle
Thanks all for the replies.? Well, this afternoon I went through the IF alignment procedure again.? The null was reconfirmed as at 456.380.? Moving on to step 3, I switched the selectivity to sharp, but this time adjusted the signal generator frequency for the maximum output, rather than left the generator at 456.380.? The peak was at 455.380.? I then re-peaked all the other adjustments at that frequency (leaving the first one alone).? The SX-110 appears to be working fine, and the crystal filter seems to be operating as it should (or close enough).? The main source of confusion in Hallicrafters’ alignment instructions is the “NOTE” just below step 2 – adjustment “A” is not really adjusted to “the frequency of the crystal”.? It’s aligned to the frequency of the notch that may be located above or below the actual crystal frequency.? From step 3 onward, the adjustments are for the actual, exact crystal frequency.? At least, that’s how I read it at this point. ? 73 – Steve, KW4H ? Richard, Steve etc too; ??the attachment that Steve sent is a .png .. pretty common now ; don’t see any djvu and it opens well here and is readable. The attachment is the specific alignment procedure for the sx-110 I presume. IF you read it, you can address the question more specifically I save it as a .jpg and attached try that. 73,,? Don VA3DRL ?
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From: [email protected] [mailto:[email protected]] On Behalf Of Richard Knoppow
Sent: Thursday, November 10, 2022 3:51 PM
To: [email protected]
Subject: Re: [HallicraftersRadios] SX-110 Alignment Puzzle? I can't open deja vu on my cell phone. Most receivers with single crystal filters adjust the IF to the crystal frequency.? ?A very few,? like the Collins 51J series need to have an exact IF frequency due to the way the tuning is done but this is very rare.?? Despite the discussion about signal generator calibration and stability it should be possible to align a simple IF with a service grade generator.? The crystal establishes the frequency. Since the overall bandwidth of the IF is considerably wider than the crystal great precision is not necessary.?? In most cases the crystal stage will have input tuning, a loading adjustment to set broadest crystal bandwidth, and maybe a neutralizing adjustment to center the phasing notch.?? Some earlier receivers have essentially a fixed crystal bandwidth and fixed phasing adjustment.? These use the original Lamb circuit.? The adjustment procedure is rather different from the later Hammarlund type filter.? Can be confusing but I don't think the earlier filter was used after aboutb1950. ?
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Re: SX-110 Alignment Puzzle
Richard, Steve etc too; ??the attachment that Steve sent is a .png .. pretty common now ; don’t see any djvu and it opens well here and is readable. The attachment is the specific alignment procedure for the sx-110 I presume. IF you read it, you can address the question more specifically I save it as a .jpg and attached try that. 73,,? Don VA3DRL ?
toggle quoted message
Show quoted text
From: [email protected] [mailto:[email protected]] On Behalf Of Richard Knoppow
Sent: Thursday, November 10, 2022 3:51 PM
To: [email protected]
Subject: Re: [HallicraftersRadios] SX-110 Alignment Puzzle? I can't open deja vu on my cell phone. Most receivers with single crystal filters adjust the IF to the crystal frequency.? ?A very few,? like the Collins 51J series need to have an exact IF frequency due to the way the tuning is done but this is very rare.?? Despite the discussion about signal generator calibration and stability it should be possible to align a simple IF with a service grade generator.? The crystal establishes the frequency. Since the overall bandwidth of the IF is considerably wider than the crystal great precision is not necessary.?? In most cases the crystal stage will have input tuning, a loading adjustment to set broadest crystal bandwidth, and maybe a neutralizing adjustment to center the phasing notch.?? Some earlier receivers have essentially a fixed crystal bandwidth and fixed phasing adjustment.? These use the original Lamb circuit.? The adjustment procedure is rather different from the later Hammarlund type filter.? Can be confusing but I don't think the earlier filter was used after aboutb1950.
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Hi Joe,
The
choke/coil I have is molded, 1" long x 1/4" diameter.
Bob
On 11/10/2022 7:14 AM, Joe Hargis
wrote:
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Bob: picked up one from Mouser and I am not sure about it.
Can you tell me it your? choke is a molded or a open coil type?
Physical size??
Joe, direct : via ARRL.NET?
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Re: SX-110 Alignment Puzzle
I can't open deja vu on my cell phone. Most receivers with single crystal filters adjust the IF to the crystal frequency.? ?A very few,? like the Collins 51J series need to have an exact IF frequency due to the way the tuning is done but this is very rare.?? Despite the discussion about signal generator calibration and stability it should be possible to align a simple IF with a service grade generator.? The crystal establishes the frequency. Since the overall bandwidth of the IF is considerably wider than the crystal great precision is not necessary.?? In most cases the crystal stage will have input tuning, a loading adjustment to set broadest crystal bandwidth, and maybe a neutralizing adjustment to center the phasing notch.?? Some earlier receivers have essentially a fixed crystal bandwidth and fixed phasing adjustment.? These use the original Lamb circuit.? The adjustment procedure is rather different from the later Hammarlund type filter.? Can be confusing but I don't think the earlier filter was used after aboutb1950.
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Show quoted text
-------- Original message -------- From: don Root <drootofallevil@...> Date: 11/10/22 11:59 AM (GMT-08:00) Subject: Re: [HallicraftersRadios] SX-110 Alignment Puzzle
Hi Steve again I believe from previous posts re the sx-110, you are trying to understand and implement the original instructions,? rather than use newer? techniques. Due to your previous posts I have run into all kinds of stuff about crystals on the www; so thanks for the incentive. ? As to your specific query: My guess is that the note for step 2means…. frequency of the crystal [ not just the IF transformers]? , and it does not say “exact”? so is likely ballpark freq of ztal.? In the next step? I think it means the exact frequency of the that specific ztal in that specific circuit. I can only guess that for an older generator, you can adjust the frequency in small increments, but the readout of frequency is limited, so it will be hard to “dial it in”, so I think their intent is keep the generator setting from step 2 , and use it [don’t change it] to begin step 3 ?since step 3 is so sharp… just my guess. ? From some of my readings, step 2 cannot easily produce an “exact” frequency, at least with equipment of the time.? ? As I read your attachment , I can only assume that IF you are using the Original crystal , the factory has set step 2 .. so it is not really necessary to repeat it; but if you change crystals [your situation?]? you should do step 2? This is my thought on what the instructions means; some others must have a better explanation. 73, Don VA3DRL ? ? ? All, ? The IF alignment procedure as spelled out in the SX-110’s Operating and Service Manual is a little confusing in one spot (see attached). In step 2 you adjust the top slug of the first IF transformer (alignment point "A") for a dip on your output meter (a VTVM, usually) (while varying the generator frequency some) – and the factory note says indicates that this alignment is to the frequency of the crystal. Fine -- I've found that null and know the frequency of that exact point. In the next step, however, you are asked to switch to sharp and “adjust the generator frequency for maximum output” and that this is the “exact frequency of the crystal”. So, which is it? I thought the frequency of the crystal was determined in step 2?? See the language in the factory note below step 2.? Thoughts? ? 73 – Steve, KW4H
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Re: SX-110 Alignment Puzzle
Hi Steve again I believe from previous posts re the sx-110, you are trying to understand and implement the original instructions,? rather than use newer? techniques. Due to your previous posts I have run into all kinds of stuff about crystals on the www; so thanks for the incentive. ? As to your specific query: My guess is that the note for step 2means…. frequency of the crystal [ not just the IF transformers]? , and it does not say “exact”? so is likely ballpark freq of ztal.? In the next step? I think it means the exact frequency of the that specific ztal in that specific circuit. I can only guess that for an older generator, you can adjust the frequency in small increments, but the readout of frequency is limited, so it will be hard to “dial it in”, so I think their intent is keep the generator setting from step 2 , and use it [don’t change it] to begin step 3 ?since step 3 is so sharp… just my guess. ? From some of my readings, step 2 cannot easily produce an “exact” frequency, at least with equipment of the time.? ? As I read your attachment , I can only assume that IF you are using the Original crystal , the factory has set step 2 .. so it is not really necessary to repeat it; but if you change crystals [your situation?]? you should do step 2? This is my thought on what the instructions means; some others must have a better explanation. 73, Don VA3DRL ? ?
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From: [email protected] [mailto:[email protected]] On Behalf Of KW4H via groups.io
Sent: Thursday, November 10, 2022 9:46 AM
To: [email protected]
Subject: [HallicraftersRadios] SX-110 Alignment Puzzle? All, ? The IF alignment procedure as spelled out in the SX-110’s Operating and Service Manual is a little confusing in one spot (see attached). In step 2 you adjust the top slug of the first IF transformer (alignment point "A") for a dip on your output meter (a VTVM, usually) (while varying the generator frequency some) – and the factory note says indicates that this alignment is to the frequency of the crystal. Fine -- I've found that null and know the frequency of that exact point. In the next step, however, you are asked to switch to sharp and “adjust the generator frequency for maximum output” and that this is the “exact frequency of the crystal”. So, which is it? I thought the frequency of the crystal was determined in step 2?? See the language in the factory note below step 2.? Thoughts? ? 73 – Steve, KW4H
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Re: SX-110 Alignment Puzzle
You make a good point.? And the truth is that I have both a NanoVNA and a TinySA.? Haven’t done much with the NanoVNA yet – it might be time to learn something new. ? 73 – Steve, KW4H ? I think they are just saying to rock it back and forth in freq to make sure it's peaked.? A generator of that time period was not dead stable and they had no digital read out of xtal freq. If you are monitoring the freq on a more modern gen or counter, you can just leave it be.? , why not use a 55 dollar nanovna to adjust these cans?? It's far superior and provides a picture of the band pass so you can adjust them perfectly.? ? There are tons of videos on how Including Carlson's lab on YouTube.
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On Nov 10, 2022 7:46 AM, "KW4H via groups.io" <reedsteve@...> wrote: All, ? The IF alignment procedure as spelled out in the SX-110’s Operating and Service Manual is a little confusing in one spot (see attached). In step 2 you adjust the top slug of the first IF transformer (alignment point "A") for a dip on your output meter (a VTVM, usually) (while varying the generator frequency some) – and the factory note says indicates that this alignment is to the frequency of the crystal. Fine -- I've found that null and know the frequency of that exact point. In the next step, however, you are asked to switch to sharp and “adjust the generator frequency for maximum output” and that this is the “exact frequency of the crystal”. So, which is it? I thought the frequency of the crystal was determined in step 2?? See the language in the factory note below step 2.? Thoughts? ? 73 – Steve, KW4H
?
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Re: SX-110 Alignment Puzzle
I think they are just saying to rock it back and forth in freq to make sure it's peaked.? A generator of that time period was not dead stable and they had no digital read out of xtal freq. If you are monitoring the freq on a more modern gen
or counter, you can just leave it be.?
The real question is?
, why not use a 55 dollar nanovna to adjust these cans?? It's far superior and provides a picture of the band pass so you can adjust them perfectly.? ?
There are tons of videos on how Including Carlson's lab on YouTube.
C
On Nov 10, 2022 7:46 AM, "KW4H via groups.io" <reedsteve@...> wrote:
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All,
?
The IF alignment procedure as spelled out in the SX-110’s Operating and Service Manual is a little confusing in one spot (see attached). In step 2 you adjust the top slug of the first IF transformer (alignment point "A") for
a dip on your output meter (a VTVM, usually) (while varying the generator frequency some) – and the factory note says indicates that this alignment is to the frequency of the crystal. Fine -- I've found that null and know the frequency of that exact point.
In the next step, however, you are asked to switch to sharp and “adjust the generator frequency for maximum output” and that this is the “exact frequency of the crystal”. So, which is it? I thought the frequency of the crystal was determined in step 2?? See
the language in the factory note below step 2.? Thoughts?
?
73 – Steve, KW4H
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k7wxk
don Root
Robert Kembel