Re: SX100 DC power plug question

#29729

Keith,
Cut a scrap of #12 wire and shove it in there for the short term.? Then, later, when you run across a relay or vacuum tube with octal plug, disassemble it and make the substitution.
Cheers
Halden VE7UTS

Re: SX-117 sensitivity above 20M

#29728

I aligned mine the other day. I worked the Christmas Island DXpedition with my Yahoo ft 2000 on 10 CW and for grins decided to see if I could hear him on the SX-117. I did! Attached a short clip. So forge onward Floyd!

20240324_124437.mp4

Re: Listing electronic items (exotic tubes)

#29727

开云体育

Hi Paul –

?

I have not seen the list, but, you need a 4D32 and not a 4B32. 73 - Mike

?

Mike B. Feher, N4FS

89 Arnold Blvd.

Howell NJ 07731

?

Show quoted text

From: [email protected] <[email protected]> On Behalf Of Paul Lemmon
Sent: Saturday, March 30, 2024 10:49 AM
To: [email protected]
Subject: Re: [HallicraftersRadios] Listing electronic items (exotic tubes)

?

Hi Skip,

First thanks Bill for allowing Skip to list tubes, I’m sure there are several of us that can benefit from it. ?I’m restoring my Collin’s 32V-1 and could use a 4B32 for the final. ?Skip please message me direct or email me directly with a price, etc.

Many thanks guys,
--
Paul
NV6B
nv6b@...

_._,_._,_

Re: SX100 DC power plug question

#29726
Edited

开云体育

Not that difficult, Keith.

See:

?

73, Jacques, VE2JFE in Montreal

?

If a DC power plug is not available for the back of one of the SX series radios, is it safe to bridge across the terminals inside the radio?
Think its pin 6 & 7 but dont remember for sure.?
Or a suggestion on where I may find one of these?
Imagine they may be getting difficult to locate.

Re: SX100 DC power plug question

#29725
Edited

开云体育

Find a dead octal tube, break off the glass, and use the base.

On 3/30/2024 6:49 AM, Keith wrote:

Show quoted text

If a DC power plug is not available for the back of one of the SX series radios, is it safe to bridge across the terminals inside the radio?
Think its pin 6 & 7 but dont remember for sure.?
Or a suggestion on where I may find one of these?
Imagine they may be getting difficult to locate.

Re: Listing electronic items (exotic tubes)

#29724

Hi Skip,

First thanks Bill for allowing Skip to list tubes, I’m sure there are several of us that can benefit from it. ?I’m restoring my Collin’s 32V-1 and could use a 4B32 for the final. ?Skip please message me direct or email me directly with a price, etc.

Many thanks guys,
--
Paul
NV6B
nv6b@...

Re: SX100 DC power plug question

#29723

开云体育

?Absolutely yes.

I added to a friend’s SX-100 (and SX-111) a three wire cord, panel mount bayonet fuse holder, and X1/Y2 safety caps on the incoming line and neutral.

Dan

WB4GRA

Show quoted text

On Mar 30, 2024, at 10:02?AM, Keith <kd4avp@...> wrote:

?Also forgot to ask this as well....
Since these radios were never designed to use a 3 wire AC cord, is it wise to add one?
I have read conflicting information on going this route.?
2 of my SX radios will need new power cords as they are brittle and cracked.?
No exposed wire, but definitely not safe to use.?
Curious on others experience and thoughts.

Re: SX100 DC power plug question

#29722

Also forgot to ask this as well....
Since these radios were never designed to use a 3 wire AC cord, is it wise to add one?
I have read conflicting information on going this route.?
2 of my SX radios will need new power cords as they are brittle and cracked.?
No exposed wire, but definitely not safe to use.?
Curious on others experience and thoughts.

SX100 DC power plug question

#29721
Edited

If a DC power plug is not available for the back of one of the SX series radios, is it safe to bridge across the terminals inside the radio?
Think its pin 6 & 7 but dont remember for sure.?
Or a suggestion on where I may find one of these?
Imagine they may be getting difficult to locate.

Re: SR 150

#29720

开云体育

I believe it was the norm for 1960s transceivers. ?The Collins KWM-2/A and Drake TR3/4 series transceivers were designed primarily for mobile SSB operation and have similar CW limitations. ?

?

I recently acquired my first TR-4Cw and KWM-2A transceivers and the Hallicrafters SR-400A is the better CW performer.? In CW mode, the KWM-2A uses an audio injection scheme into the balanced modulator.? To minimize close-spaced sidebands from the injection scheme, a 1700 Hz tone is used into the modulator then split to the receiver’s AF stage for sidetone. ?A CW tone less than 1700 Hz results in multiple close-spaced carriers just as it does with the Collins 32S-1 transmitter.? I’ve seen several stories that describe FCC citations issued to early 32S-1 CW ops. Later Collins transmitters solved the problem using traditional keying circuitry.

?

Paul, W9AC

?

?????

?

Show quoted text

From: [email protected] <[email protected]> On Behalf Of robert cesarone via groups.io
Sent: Friday, March 29, 2024 8:22 PM
To: [email protected]
Subject: Re: [HallicraftersRadios] SR 150

?

I always wondered why there was no built-in side tone for CW in this rig.

?

Possible reasons:

Primarily intended for SSB use?

Primarily intended as a mobile rig?

Expected CW ops to be using the Halli paddle and keyer (with audio)?

?

Does anyone know?

?

I have an SR-150 in very nice cosmetic condition.? I haven't used it in a few years - but I have had it on the air.? I did a little CW with it - but that was rather difficult w/o a sidetone.? I'd like to get it on the air again one of these days.

?

Nice rig: looks good; very quiet receiver.

?

Bob C.

WA9JIB

?

= = = = =

?

On Friday, March 29, 2024 at 04:17:55 PM PDT, waltcates <cateswa@...> wrote:

?

There are those who say the SR-150 was Hallicrafters best ever transceiver.

?

Thanks for the kind words on the repair document. They are all living documents, ever few months I take one and update it.

?

Walt Cates, WD0GOF

?

A majority of acceptance is not proof of correctness.

?

From: [email protected] <[email protected]> on behalf of Don VE3IDS <ve3ids.don@...>
Sent: Friday, March 29, 2024 6:01 PM
To: [email protected] <[email protected]>
Subject: [HallicraftersRadios] SR 150

?

Last summer I picked up a SR 150 and matching power supply/speaker. It was in the typical dirty scratched condition and didn't work. I wanted to say that Walt's repair manual was invaluable. I did the wash down with simple green rather than scrubbing bubbles because it was available. That worked very well followed by the garden hose and a few days in the summer sun. I sanded the case to bare metal and sprayed it with rustoleum hammered finish pewter. I recapped the supply and the electrolytic capacitors in the rig per Walt's doc. I followed the alignment tips and found that I needed to shift the USB carrier oscillator a bit to bring up the CW power levels. Thanks Walt, the tips in your manual are gold. I'm not sure if you were a technical writer or not, but I haven't seen better service docs. I still need to spend time on the vfo tracking across the dial but that can come later. I also added a side tone oscillator as I am primarily a CW op and prefer using a bug. I made up a little board with a couple relays, one to switch the grid block voltage and one to switch the audio output from my side tone oscillator. I now have 12 volts on the key instead of grid block voltage. This is all easily removable with no non reversible changes and I leave a printed note with the mod details inside the cabinet in a cool location behind the bottom cover. I am impressed with how stable the vfo is and the nice comfortable sound to the receiver in this model. The first contact was a nice chat with an op in France. Lots of fun!?

?

73 Don ve3ids?

S20R project

#29719
Edited

For sentimental reasons, I've been on the lookout for an S20 R model, and decided to take a chance on an Ebay sale of an "as is" unit.? The cosmetic appearance didn't look too bad, and the fact that it powers on with at least a hiss?in the speaker, and that it was part of a ham estate,? gave me just enough hope to make an offer that was accepted.? But once I have it in hand I will need to lean heavily on the S20R experts here, since I have limited skills (truthfully, ZERO) with regard to troubleshooting and/or restoring tube radios of this type.

I think I was about 12 years old when I first discovered that the "broken" old S20R in our basement just needed an antenna to pick up signals, when I touched a screwdriver to one of the antenna terminals and almost immediately heard the WWV buzzing/clicking format the predated the current tones.? I was hooked.

SR 2000 serial numbers

#29718

Wondering if any of you can give me some insight as to rigs production date.

Radio 1. No serial tag on back

199724B inside chassis

Has copper strap

Has production 3 updates

?

Radio 2.?

452002. 825001 in tag on back

Has copper strap

Has latest upgrades
199720E on inside chassis.

Are these radios really 4 apart?

C

Re: SR 150

#29717

开云体育

A lot of people complained about the sidetone issue, that is why the 400 and 2000 have sidetone.

Walt Cates, WD0GOF

?

A majority of acceptance is not proof of correctness.

Show quoted text

From: [email protected] <[email protected]> on behalf of robert cesarone via groups.io <engineerbob4449@...>
Sent: Friday, March 29, 2024 7:22 PM
To: [email protected] <[email protected]>
Subject: Re: [HallicraftersRadios] SR 150

?

I always wondered why there was no built-in side tone for CW in this rig.

Possible reasons:

Primarily intended for SSB use?

Primarily intended as a mobile rig?

Expected CW ops to be using the Halli paddle and keyer (with audio)?

Does anyone know?

I have an SR-150 in very nice cosmetic condition.? I haven't used it in a few years - but I have had it on the air.? I did a little CW with it - but that was rather difficult w/o a sidetone.? I'd like to get it on the air again one of these days.

Nice rig: looks good; very quiet receiver.

Bob C.

WA9JIB

= = = = =

On Friday, March 29, 2024 at 04:17:55 PM PDT, waltcates <cateswa@...> wrote:

There are those who say the SR-150 was Hallicrafters best ever transceiver.

Thanks for the kind words on the repair document. They are all living documents, ever few months I take one and update it.

Walt Cates, WD0GOF

?

A majority of acceptance is not proof of correctness.

From: [email protected] <[email protected]> on behalf of Don VE3IDS <ve3ids.don@...>
Sent: Friday, March 29, 2024 6:01 PM
To: [email protected] <[email protected]>
Subject: [HallicraftersRadios] SR 150

?

Last summer I picked up a SR 150 and matching power supply/speaker. It was in the typical dirty scratched condition and didn't work. I wanted to say that Walt's repair manual was invaluable. I did the wash down with simple green rather than scrubbing bubbles because it was available. That worked very well followed by the garden hose and a few days in the summer sun. I sanded the case to bare metal and sprayed it with rustoleum hammered finish pewter. I recapped the supply and the electrolytic capacitors in the rig per Walt's doc. I followed the alignment tips and found that I needed to shift the USB carrier oscillator a bit to bring up the CW power levels. Thanks Walt, the tips in your manual are gold. I'm not sure if you were a technical writer or not, but I haven't seen better service docs. I still need to spend time on the vfo tracking across the dial but that can come later. I also added a side tone oscillator as I am primarily a CW op and prefer using a bug. I made up a little board with a couple relays, one to switch the grid block voltage and one to switch the audio output from my side tone oscillator. I now have 12 volts on the key instead of grid block voltage. This is all easily removable with no non reversible changes and I leave a printed note with the mod details inside the cabinet in a cool location behind the bottom cover. I am impressed with how stable the vfo is and the nice comfortable sound to the receiver in this model. The first contact was a nice chat with an op in France. Lots of fun!?

73 Don ve3ids?

Re: SR 150

#29716

Hope I have success with the two rescues I picked up last summer also. Now that the wife is well on her way to recovery from the knee replacement I should be able to spend some time at the work bench where the first unit is already waiting for me. Always did like the looks of? the Hallicrafters gear from that era but then I just like boatanchors in general, HI!

Great job, Don and even more motivated now by the comments about the SR-150 performance.

73 ... Ed, WA9GQK

On Friday, March 29, 2024 at 06:02:53 PM CDT, Don VE3IDS <ve3ids.don@...> wrote:

Last summer I picked up a SR 150 and matching power supply/speaker. It was in the typical dirty scratched condition and didn't work. I wanted to say that Walt's repair manual was invaluable. I did the wash down with simple green rather than scrubbing bubbles because it was available. That worked very well followed by the garden hose and a few days in the summer sun. I sanded the case to bare metal and sprayed it with rustoleum hammered finish pewter. I recapped the supply and the electrolytic capacitors in the rig per Walt's doc. I followed the alignment tips and found that I needed to shift the USB carrier oscillator a bit to bring up the CW power levels. Thanks Walt, the tips in your manual are gold. I'm not sure if you were a technical writer or not, but I haven't seen better service docs. I still need to spend time on the vfo tracking across the dial but that can come later. I also added a side tone oscillator as I am primarily a CW op and prefer using a bug. I made up a little board with a couple relays, one to switch the grid block voltage and one to switch the audio output from my side tone oscillator. I now have 12 volts on the key instead of grid block voltage. This is all easily removable with no non reversible changes and I leave a printed note with the mod details inside the cabinet in a cool location behind the bottom cover. I am impressed with how stable the vfo is and the nice comfortable sound to the receiver in this model. The first contact was a nice chat with an op in France. Lots of fun!?

73 Don ve3ids?

Re: SX-100 Repair Problems - Bumblebees!

#29715
Edited

开云体育

Here is a different Sprague ad? ???

See the rest 0n pdf 22

??

--
don??? va3drl

Re: SR 150

#29714

Beautiful job Don!

I have a LOT of Hallicrafters gear but I have never had an SR-150.?? I have little to no room for any more gear but if I found a nice SR-150, I would make an exception!!

--
73/Rick
W4XA
__________________________________
All posts are created using OpenSuSE Leap 15.5 x64 Linux

Re: SR 150

#29713

开云体育

A beautiful restoration job, Don. 73 – Mike

?

Mike B. Feher, N4FS

89 Arnold Blvd.

Howell NJ 07731

?

Show quoted text

From: [email protected] <[email protected]> On Behalf Of Don VE3IDS
Sent: Friday, March 29, 2024 7:02 PM
To: [email protected]
Subject: [HallicraftersRadios] SR 150

?

Last summer I picked up a SR 150 and matching power supply/speaker. It was in the typical dirty scratched condition and didn't work. I wanted to say that Walt's repair manual was invaluable. I did the wash down with simple green rather than scrubbing bubbles because it was available. That worked very well followed by the garden hose and a few days in the summer sun. I sanded the case to bare metal and sprayed it with rustoleum hammered finish pewter. I recapped the supply and the electrolytic capacitors in the rig per Walt's doc. I followed the alignment tips and found that I needed to shift the USB carrier oscillator a bit to bring up the CW power levels. Thanks Walt, the tips in your manual are gold. I'm not sure if you were a technical writer or not, but I haven't seen better service docs. I still need to spend time on the vfo tracking across the dial but that can come later. I also added a side tone oscillator as I am primarily a CW op and prefer using a bug. I made up a little board with a couple relays, one to switch the grid block voltage and one to switch the audio output from my side tone oscillator. I now have 12 volts on the key instead of grid block voltage. This is all easily removable with no non reversible changes and I leave a printed note with the mod details inside the cabinet in a cool location behind the bottom cover. I am impressed with how stable the vfo is and the nice comfortable sound to the receiver in this model. The first contact was a nice chat with an op in France. Lots of fun!?

?

73 Don ve3ids?

Re: SR 150

#29712

I always wondered why there was no built-in side tone for CW in this rig.

Possible reasons:

Primarily intended for SSB use?

Primarily intended as a mobile rig?

Expected CW ops to be using the Halli paddle and keyer (with audio)?

Does anyone know?

I have an SR-150 in very nice cosmetic condition.? I haven't used it in a few years - but I have had it on the air.? I did a little CW with it - but that was rather difficult w/o a sidetone.? I'd like to get it on the air again one of these days.

Nice rig: looks good; very quiet receiver.

Bob C.

WA9JIB

= = = = =

On Friday, March 29, 2024 at 04:17:55 PM PDT, waltcates <cateswa@...> wrote:

There are those who say the SR-150 was Hallicrafters best ever transceiver.

Thanks for the kind words on the repair document. They are all living documents, ever few months I take one and update it.

Walt Cates, WD0GOF

?

A majority of acceptance is not proof of correctness.

Show quoted text

From: [email protected] <[email protected]> on behalf of Don VE3IDS <ve3ids.don@...>
Sent: Friday, March 29, 2024 6:01 PM
To: [email protected] <[email protected]>
Subject: [HallicraftersRadios] SR 150

?

Last summer I picked up a SR 150 and matching power supply/speaker. It was in the typical dirty scratched condition and didn't work. I wanted to say that Walt's repair manual was invaluable. I did the wash down with simple green rather than scrubbing bubbles because it was available. That worked very well followed by the garden hose and a few days in the summer sun. I sanded the case to bare metal and sprayed it with rustoleum hammered finish pewter. I recapped the supply and the electrolytic capacitors in the rig per Walt's doc. I followed the alignment tips and found that I needed to shift the USB carrier oscillator a bit to bring up the CW power levels. Thanks Walt, the tips in your manual are gold. I'm not sure if you were a technical writer or not, but I haven't seen better service docs. I still need to spend time on the vfo tracking across the dial but that can come later. I also added a side tone oscillator as I am primarily a CW op and prefer using a bug. I made up a little board with a couple relays, one to switch the grid block voltage and one to switch the audio output from my side tone oscillator. I now have 12 volts on the key instead of grid block voltage. This is all easily removable with no non reversible changes and I leave a printed note with the mod details inside the cabinet in a cool location behind the bottom cover. I am impressed with how stable the vfo is and the nice comfortable sound to the receiver in this model. The first contact was a nice chat with an op in France. Lots of fun!?

73 Don ve3ids?

Re: SR 150

#29711

开云体育

There are those who say the SR-150 was Hallicrafters best ever transceiver.

Thanks for the kind words on the repair document. They are all living documents, ever few months I take one and update it.

Walt Cates, WD0GOF

?

A majority of acceptance is not proof of correctness.

Show quoted text

From: [email protected] <[email protected]> on behalf of Don VE3IDS <ve3ids.don@...>
Sent: Friday, March 29, 2024 6:01 PM
To: [email protected] <[email protected]>
Subject: [HallicraftersRadios] SR 150

?

Last summer I picked up a SR 150 and matching power supply/speaker. It was in the typical dirty scratched condition and didn't work. I wanted to say that Walt's repair manual was invaluable. I did the wash down with simple green rather than scrubbing bubbles because it was available. That worked very well followed by the garden hose and a few days in the summer sun. I sanded the case to bare metal and sprayed it with rustoleum hammered finish pewter. I recapped the supply and the electrolytic capacitors in the rig per Walt's doc. I followed the alignment tips and found that I needed to shift the USB carrier oscillator a bit to bring up the CW power levels. Thanks Walt, the tips in your manual are gold. I'm not sure if you were a technical writer or not, but I haven't seen better service docs. I still need to spend time on the vfo tracking across the dial but that can come later. I also added a side tone oscillator as I am primarily a CW op and prefer using a bug. I made up a little board with a couple relays, one to switch the grid block voltage and one to switch the audio output from my side tone oscillator. I now have 12 volts on the key instead of grid block voltage. This is all easily removable with no non reversible changes and I leave a printed note with the mod details inside the cabinet in a cool location behind the bottom cover. I am impressed with how stable the vfo is and the nice comfortable sound to the receiver in this model. The first contact was a nice chat with an op in France. Lots of fun!?

73 Don ve3ids?

SR 150

#29710
Edited

Last summer I picked up a SR 150 and matching power supply/speaker. It was in the typical dirty scratched condition and didn't work. I wanted to say that Walt's repair manual was invaluable. I did the wash down with simple green rather than scrubbing bubbles because it was available. That worked very well followed by the garden hose and a few days in the summer sun. I sanded the case to bare metal and sprayed it with rustoleum hammered finish pewter. I recapped the supply and the electrolytic capacitors in the rig per Walt's doc. I followed the alignment tips and found that I needed to shift the USB carrier oscillator a bit to bring up the CW power levels. Thanks Walt, the tips in your manual are gold. I'm not sure if you were a technical writer or not, but I haven't seen better service docs. I still need to spend time on the vfo tracking across the dial but that can come later. I also added a side tone oscillator as I am primarily a CW op and prefer using a bug. I made up a little board with a couple relays, one to switch the grid block voltage and one to switch the audio output from my side tone oscillator. I now have 12 volts on the key instead of grid block voltage. This is all easily removable with no non reversible changes and I leave a printed note with the mod details inside the cabinet in a cool location behind the bottom cover. I am impressed with how stable the vfo is and the nice comfortable sound to the receiver in this model. The first contact was a nice chat with an op in France. Lots of fun!?

73 Don ve3ids?