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Date
Re: SX-28 Info

 
Edited

Hi Steve. Here are pics of my sx28a. No inside bottom cover, nor do I see any provision for it.?
Re: SX-62 FM respons

 

Hi,
On my SX-62, which I use maybe 2 or 3 hours a day on classical music, I find two audio peaks on 88.7 MHz when I tune. I generally tune to the upper peak. I suspect the two peaks are because when I aligned the IF they are not exactly tuned identically to the same center frequency. I also find “twin” peaks on higher frequencies but less pronounced.
Skip Magnuson
Spokane, WA
Re: SX-62 FM respons

 

hi again all
the link I previously posted does not seem to want to be active so I'll try again...

now here? is a review of the SX-62 by HiFi? people??? on page 78?

don

Re: SX-25

 

Randy,

? ? I'd be interested in the RF section.? I need the band switch assembly, but I expect the whole section would be easier to remove.? Just let us know what your final decison is about the future of the radio.

73.
Joe? AB1YO

On Wednesday, January 18, 2023 at 11:15:22 AM EST, Dan Goin via groups.io <dgoin1@...> wrote:


Hi Randy
From the pictures it looks like a nice clean radio. The chassis is clean, tubes look new, and looks like new filter cap from Hayseed. all knobs are there. Is this a working radio?
What are you asking for it before parting it out??

Thanks Dan KD5MV


On Tuesday, January 17, 2023, 12:18:39 PM CST, wn9d <wn9d@...> wrote:


Hi Dan,
Attached are photos of the SX-25 for your consideration.

I will be parting out the SX-25 (less the tubes in photo) based upon interest from within the group. If anyone is interested in the receiver as is?

'73, Randy WN9D
Re: SX-62 FM respons

 

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Thank you!

On Jan 18, 2023 5:01 PM, don Root <drootofallevil@...> wrote:

Hi again Scott, and Waldo/Skip wherever you are

I have been curious about the sx-62’s and also the 42’s and have more thoughts and questions re Scott’s situation, but I just ran into this:

“Both use the same limiter/discriminator FM detection system which works very well but can be confusing to new users since it will detect each FM station at 3 closely spaced points on the dial. The center spot is the correct location where it is operating as a true discriminator but it will also "slope" detect FM when slightly offset to either side of center. Until you get used to tuning FM with this type of detector, especially for the SX-62 which doesn't have a tuning meter, you should tune in AM mode for MAXIMUM distortion and then switch to FM. Tuning in AM mode for max distortion centers the signal within the IF where you want it and then switching to FM results in minimum distortion.

Rodger WQ9E? ”

Copied from well down in ?----

https://antiqueradios.com/forums/viewtopic.php?f=5&t=340549

I wonder if you find this sort of response?

Don VA3DRL
Re: SX-62 FM respons

 

Hi again Scott, and Waldo/Skip wherever you are

I have been curious about the sx-62’s and also the 42’s and have more thoughts and questions re Scott’s situation, but I just ran into this:

“Both use the same limiter/discriminator FM detection system which works very well but can be confusing to new users since it will detect each FM station at 3 closely spaced points on the dial. The center spot is the correct location where it is operating as a true discriminator but it will also "slope" detect FM when slightly offset to either side of center. Until you get used to tuning FM with this type of detector, especially for the SX-62 which doesn't have a tuning meter, you should tune in AM mode for MAXIMUM distortion and then switch to FM. Tuning in AM mode for max distortion centers the signal within the IF where you want it and then switching to FM results in minimum distortion.

Rodger WQ9E? ”

Copied from well down in ?----

https://antiqueradios.com/forums/viewtopic.php?f=5&t=340549

I wonder if you find this sort of response?

Don VA3DRL
Re: SX-25

 

Hi Randy
From the pictures it looks like a nice clean radio. The chassis is clean, tubes look new, and looks like new filter cap from Hayseed. all knobs are there. Is this a working radio?
What are you asking for it before parting it out??

Thanks Dan KD5MV


On Tuesday, January 17, 2023, 12:18:39 PM CST, wn9d <wn9d@...> wrote:


Hi Dan,
Attached are photos of the SX-25 for your consideration.

I will be parting out the SX-25 (less the tubes in photo) based upon interest from within the group. If anyone is interested in the receiver as is?

'73, Randy WN9D
Re: SX-28 Info

 
Edited

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I don’t own a SX-28, but found the attached online.? Hope it’s helpful.

?

73 – Steve, KW4H
SX-28 Info

 

Hi all, well, 1st time for everything.?
4 years ago, my SX28 smoked the AF output transformer.?
After 4 years, thanks to retirement,? I had time to put a new transformer in it, but now am missing 2 things:
The receiver bottom cover AND the bottom cover of the cabinet!
I just need photos, if you have a couple of good pix of the parts, please share....
I know they are here somewhere!?
73 Steve w8tow?
Re: SX-25

 

If nobody buys your radio, and you end up parting it out, i would be interested in the audio transformer and band spread dial.

thanks dan KD5MV


On Tuesday, January 17, 2023, 12:18:39 PM CST, wn9d <wn9d@...> wrote:


Hi Dan,
Attached are photos of the SX-25 for your consideration.

I will be parting out the SX-25 (less the tubes in photo) based upon interest from within the group. If anyone is interested in the receiver as is?

'73, Randy WN9D
Re: REPLACEMENT FOR V100 DIODE

 

Hi ya Walt

Electronic Surplus is the one site that I hace found that has them or so they say.


I had a look but the Tek site no longer has them as far as I can see.


Darryl the data sheet for the 1N3182 is at




Cheers from OZ. ? Dean. VK5LB


On Tuesday, 17 January 2023 at 10:19:28 am ACDT, waltcates <cateswa@...> wrote: 


I ran across a change notice for the SR-2000 where the varactor diode was changed from a V100 to a 1N3182.
The V100 is used in all the VFO's in all the SR HF rigs. 
The V100 is impossible to find. I have tracked this part down 3 or 4 times and have always forgot where I found it or lost my notes. 
So I thought I would post it and perhaps I'll remember where to find it. 

The Tektronix 1N3182 is available from >
for $10.00. 
Also try 
It is spec'ed at 33pf @ 20rv.
Best Regards, Walt Cates, WD0GOF, >
It's Not What You Gather, But What You Scatter That Tells What Kind Of Life You Have Lived!


Name:
darrell king

Email:

n4qga1@...

Message:
can you give me the specs on the type v 100 varicap used in the sr 150 i cant seem to find any info thanks




?Walt Cates, WD0GOF
?
Your past has no control over your future. Only your NOW can impact your future.
Re: SX-25

 
Edited

Hi Todd,

My apologies for omitting the photos.

WN9D
Re: SX-25

 

Hi Todd,
Attached are photos of the SX-25 for your consideration.

I will be parting out the SX-25 (less the tubes in photo) based upon interest from within the group. If anyone is interested in the receiver as is?

'73, Randy WN9D
Re: SX-25

 
Edited

Hi Dan,
Attached are photos of the SX-25 for your consideration.

I will be parting out the SX-25 (less the tubes in photo) based upon interest from within the group. If anyone is interested in the receiver as is?

'73, Randy WN9D
Re: SX-62 FM respons

 

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I have last worked on it over a year ago, but if I remember correctly the AM setting on the FM band sounded better.
I will likely put it back on the bench later this year, as most of my retirement? things will be out of the way.

From: [email protected] <[email protected]> on behalf of don Root <drootofallevil@...>
Sent: Monday, January 16, 2023 6:31 PM
To: [email protected] <[email protected]>
Subject: Re: [HallicraftersRadios] SX-62 FM respons
?
Scott

If I understand it correctly, the 62 uses only the 10.7 IF’s for the high 2 bands, but it can do AM as well as FM on those bands. Maybe it is possible that it is processing the FM as AM using slope detection, perhaps due to a dirty contact on the selectivity switch.

As a comparison, with a FM station tuned in using FM, what difference do you get if you then select AM ?
don? VA3DRL
REPLACEMENT FOR V100 DIODE

 

开云体育

I ran across a change notice for the SR-2000 where the varactor diode was changed from a V100 to a 1N3182.
The V100 is used in all the VFO's in all the SR HF rigs. 
The V100 is impossible to find. I have tracked this part down 3 or 4 times and have always forgot where I found it or lost my notes. 
So I thought I would post it and perhaps I'll remember where to find it. 

The Tektronix 1N3182 is available from >
for $10.00. 
Also try 
It is spec'ed at 33pf @ 20rv.
Best Regards, Walt Cates, WD0GOF, >
It's Not What You Gather, But What You Scatter That Tells What Kind Of Life You Have Lived!


Name:
darrell king

Email:

n4qga1@...

Message:
can you give me the specs on the type v 100 varicap used in the sr 150 i cant seem to find any info thanks




?Walt Cates, WD0GOF
?
Your past has no control over your future. Only your NOW can impact your future.
Re: SX-62 FM respons

 

Scott

If I understand it correctly, the 62 uses only the 10.7 IF’s for the high 2 bands, but it can do AM as well as FM on those bands. Maybe it is possible that it is processing the FM as AM using slope detection, perhaps due to a dirty contact on the selectivity switch.

As a comparison, with a FM station tuned in using FM, what difference do you get if you then select AM ?
don? VA3DRL
Re: SX-62 FM respons

 

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sorry for the typo RADIOS BY HALLICRAFTERS


?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 waltcates <cateswa@...>
Sent: Monday, January 16, 2023 11:32 AM
To: [email protected] <[email protected]>
Subject: Re: [HallicraftersRadios] SX-62 FM respons
?
According to "RDIOS BY HALLICRAFTERS" the R-42 was designed for the SX-42


?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 Dan <pitfit@...>
Sent: Monday, January 16, 2023 10:59 AM
To: [email protected] <[email protected]>
Subject: Re: [HallicraftersRadios] SX-62 FM respons
?
Agree on the R-42 Reproducer. First I ever heard was in the shop of W3HM, Howard Mills, a couple of years ago. Wonderful. It was hooked to my 51J4 at the time - not famous for "hifi audio" - but it sounded great!

What Hallicrafters radio was the R-42 originally introduced for? I have no idea. The SX-62?

Dan
WB4GRA


On Jan 16, 2023, at 11:11 AM, Tom Dailey <radio@...> wrote:

?

I’ve had (and redone) both… yeah, the “A” is better…? That said, if you score one, try to find the “Reproducer” speaker… they sound like a concert hall.? First time I ran my first rebuilt one (on FM bcst), the XYL asked “Did you get a new stereo?? It sounds wonderful!”

?

Tom - W?EAJ
Re: SX-62 FM respons

 

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According to "RDIOS BY HALLICRAFTERS" the R-42 was designed for the SX-42


?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 Dan <pitfit@...>
Sent: Monday, January 16, 2023 10:59 AM
To: [email protected] <[email protected]>
Subject: Re: [HallicraftersRadios] SX-62 FM respons
?
Agree on the R-42 Reproducer. First I ever heard was in the shop of W3HM, Howard Mills, a couple of years ago. Wonderful. It was hooked to my 51J4 at the time - not famous for "hifi audio" - but it sounded great!

What Hallicrafters radio was the R-42 originally introduced for? I have no idea. The SX-62?

Dan
WB4GRA


On Jan 16, 2023, at 11:11 AM, Tom Dailey <radio@...> wrote:

?

I’ve had (and redone) both… yeah, the “A” is better…? That said, if you score one, try to find the “Reproducer” speaker… they sound like a concert hall.? First time I ran my first rebuilt one (on FM bcst), the XYL asked “Did you get a new stereo?? It sounds wonderful!”

?

Tom - W?EAJ
Re: SX-62 FM respons

 

开云体育

Agree on the R-42 Reproducer. First I ever heard was in the shop of W3HM, Howard Mills, a couple of years ago. Wonderful. It was hooked to my 51J4 at the time - not famous for "hifi audio" - but it sounded great!

What Hallicrafters radio was the R-42 originally introduced for? I have no idea. The SX-62?

Dan
WB4GRA


On Jan 16, 2023, at 11:11 AM, Tom Dailey <radio@...> wrote:

?

I’ve had (and redone) both… yeah, the “A” is better…? That said, if you score one, try to find the “Reproducer” speaker… they sound like a concert hall.? First time I ran my first rebuilt one (on FM bcst), the XYL asked “Did you get a new stereo?? It sounds wonderful!”

?

Tom - W?EAJ
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