Clearing shelves.? LOCAL PICKUP ONLY in Lee's Summit Mo (Kansas City area).
This SR-150 and power supply was refurbished in 2019. Has not been used since completed.?
Benched today 80, 40, 20, and 15-meters, RX and TX meet spec.?
10-meters a little weak.
The K2/K3 issues are resolved.
Front panels, SR is a 9, PS is a 7.
Cases need?to be painted.
\
AS IS $525
?Walt Cates,
WD0GOF
?
Your past has no control over your future. Only your NOW can impact your future.
|
Re: New to group. HT-40 & SX-140
I don't know the current crop on mics that well but both Electro Voice? ans Shure have made good movi g coil dynamic mics with cardioid patterns and good Voice response.? I use an ancient EV 664,? which I think is about optimum.? Has enough shaped response to be good for speech but still sounds? natural.? EV made many later models with similar response. The cardioid pattern helps with background noise and echo and helps the anti vox if you use vox.??
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Show quoted text
-------- Original message -------- From: waltcates <cateswa@...> Date: 8/30/22 9:31 PM (GMT-08:00) Subject: Re: [HallicraftersRadios] New to group. HT-40 & SX-140
Yes, I read it to the end. I have not had the opportunity?to run an HT-40 with an SX-140 so I could not offer suggestions in that area. I have however listened to a lot of people running D104's on "H" gear. The echos and ringing are not pleasant, so I offered
a suggestion for a better sounding mic.
?Walt Cates,
WD0GOF
?
Your past has no control over your future. Only your NOW can impact your future.
Am I the only one who read Dave's? message through to the end? He was asking about how to spot the Rx/Tx using the HT40/ SX-140 combo. Not the pros/cons of using a? D-104 mike.
?
Bob K3AC
In a message dated 8/30/2022 11:56:56 PM Eastern Standard Time, 1oldlens1@... writes:
?
I want to reinforce Walts statement.? If you like the sound of a D 104 bypass the internal amplifier.? Instructions for doing this are on the web.? Without the amo the D 104 is still one of the highest output mics ever on the market .? It should not overdrive
the rig but eill have plenty of output.
Note that the D 104 is designed for high intelligibility under noisy conditions .? It boosts the highes and rolls off the.lows.? I have always found them tinny sounding.
Fwiw the D 204 was the fir D t crystal mic on the market (c 1933) early on there were a couple of versions including one with flat response. Crystal mics and phonograph pickups were popular at a time when electronic amplification was expensive,? the high
output could save a stage if amplification.? Unfortunately crystals are vulnerable to moderate heat (a hot day),? humidity? and mechanic as l shock.?
?
?
?
?
?
?
-------- Original message --------
From: waltcates <cateswa@...>
Date: 8/30/22 7:39 PM (GMT-08:00)
Subject: Re: [HallicraftersRadios] New to group. HT-40 & SX-140
?
Great find. You may want?to rethink the choice of microphones. Like most all of the Hallicrafters of the 50's, 60's and 70's the HT-40 was designed?to function with a dynamic microphone. Over driving the audio ckts will cause spurs and garbled audio.
?
For more information on microphone selection for Hallicrafters rigs see:?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?Walt Cates,
WD0GOF
?
Your past has no control over your future. Only your NOW can impact your future.
?
?
Hello everyone. I have been gifted with a HT-40 & SX-140 in relatively good shape. The tubes check ok at the moment. I am getting about 45 watts on 40M so that seems OK. I am planning on using an amplified D-104 and make an attempt at a AM contact. I have
a T/R relay in operation being controlled by the TX and that works well. I am learning how to use the RX which is a bit different. Licensed in 1977 my first rig was a HW-101 so no split operation experience from that era. Also gifted was a Drake 2-NT & 2B
(which has been replaced by a 2C). A HA-5 VFO is here also to use on either rig. My initial question is how do I spot the TX & RX? I have not quite figured out how to do that yet.
Thanks for any help and suggestions,
Dave KC3AM
|
Re: New to group. HT-40 & SX-140
Yes, I read it to the end. I have not had the opportunity?to run an HT-40 with an SX-140 so I could not offer suggestions in that area. I have however listened to a lot of people running D104's on "H" gear. The echos and ringing are not pleasant, so I offered
a suggestion for a better sounding mic.
?Walt Cates,
WD0GOF
?
Your past has no control over your future. Only your NOW can impact your future.
toggle quoted message
Show quoted text
Am I the only one who read Dave's? message through to the end? He was asking about how to spot the Rx/Tx using the HT40/ SX-140 combo. Not the pros/cons of using a? D-104 mike.
?
Bob K3AC
In a message dated 8/30/2022 11:56:56 PM Eastern Standard Time, 1oldlens1@... writes:
?
I want to reinforce Walts statement.? If you like the sound of a D 104 bypass the internal amplifier.? Instructions for doing this are on the web.? Without the amo the D 104 is still one of the highest output mics ever on the market .? It should not overdrive
the rig but eill have plenty of output.
Note that the D 104 is designed for high intelligibility under noisy conditions .? It boosts the highes and rolls off the.lows.? I have always found them tinny sounding.
Fwiw the D 204 was the fir D t crystal mic on the market (c 1933) early on there were a couple of versions including one with flat response. Crystal mics and phonograph pickups were popular at a time when electronic amplification was expensive,? the high
output could save a stage if amplification.? Unfortunately crystals are vulnerable to moderate heat (a hot day),? humidity? and mechanic as l shock.?
?
?
?
?
?
?
-------- Original message --------
From: waltcates <cateswa@...>
Date: 8/30/22 7:39 PM (GMT-08:00)
Subject: Re: [HallicraftersRadios] New to group. HT-40 & SX-140
?
Great find. You may want?to rethink the choice of microphones. Like most all of the Hallicrafters of the 50's, 60's and 70's the HT-40 was designed?to function with a dynamic microphone. Over driving the audio ckts will cause spurs and garbled audio.
?
For more information on microphone selection for Hallicrafters rigs see:?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?Walt Cates,
WD0GOF
?
Your past has no control over your future. Only your NOW can impact your future.
?
?
Hello everyone. I have been gifted with a HT-40 & SX-140 in relatively good shape. The tubes check ok at the moment. I am getting about 45 watts on 40M so that seems OK. I am planning on using an amplified D-104 and make an attempt at a AM contact. I have
a T/R relay in operation being controlled by the TX and that works well. I am learning how to use the RX which is a bit different. Licensed in 1977 my first rig was a HW-101 so no split operation experience from that era. Also gifted was a Drake 2-NT & 2B
(which has been replaced by a 2C). A HA-5 VFO is here also to use on either rig. My initial question is how do I spot the TX & RX? I have not quite figured out how to do that yet.
Thanks for any help and suggestions,
Dave KC3AM
|
Re: New to group. HT-40 & SX-140
The D104's boosted high frequency output is, arguably, not too much of a problem on the HT-40. However on the SSB rigs it will create havoc. The audio band pass on SSB on the "H" rigs is listed 500Hz - 2700Hz or 500Hz - 3200Hz. In these rigs the D104 will over
drive the sideband filters and cause splatter outside the desired bandwidth.
I have not tested the HT-40 with overdrive out side the normal audio bandwidth for AM emissions. If I get my hands on a 40 I'll have to test that and see what flows from the antenna jack.
?Walt Cates,
WD0GOF
?
Your past has no control over your future. Only your NOW can impact your future.
toggle quoted message
Show quoted text
I want to reinforce Walts statement.? If you like the sound of a D 104 bypass the internal amplifier.? Instructions for doing this are on the web.? Without the amo the D 104 is still one of the highest output mics ever on the market .? It should
not overdrive the rig but eill have plenty of output.
Note that the D 104 is designed for high intelligibility under noisy conditions .? It boosts the highes and rolls off the.lows.? I have always found them tinny sounding.
Fwiw the D 204 was the fir D t crystal mic on the market (c 1933) early on there were a couple of versions including one with flat response. Crystal mics and phonograph pickups were popular at a time when electronic amplification was expensive,?
the high output could save a stage if amplification.? Unfortunately crystals are vulnerable to moderate heat (a hot day),? humidity? and mechanic as l shock.?
-------- Original message --------
From: waltcates <cateswa@...>
Date: 8/30/22 7:39 PM (GMT-08:00)
Subject: Re: [HallicraftersRadios] New to group. HT-40 & SX-140
Great find. You may want?to rethink the choice of microphones. Like most all of the Hallicrafters of the 50's, 60's and 70's the HT-40 was designed?to function with a dynamic microphone. Over driving the audio ckts will cause spurs and garbled audio.
For more information on microphone selection for Hallicrafters rigs see:?
?Walt Cates,
WD0GOF
?
Your past has no control over your future. Only your NOW can impact your future.
Hello everyone. I have been gifted with a HT-40 & SX-140 in relatively good shape. The tubes check ok at the moment. I am getting about 45 watts on 40M so that seems OK. I am planning on using an amplified D-104 and make an attempt at a AM contact. I have
a T/R relay in operation being controlled by the TX and that works well. I am learning how to use the RX which is a bit different. Licensed in 1977 my first rig was a HW-101 so no split operation experience from that era. Also gifted was a Drake 2-NT & 2B
(which has been replaced by a 2C). A HA-5 VFO is here also to use on either rig. My initial question is how do I spot the TX & RX? I have not quite figured out how to do that yet.
Thanks for any help and suggestions,
Dave KC3AM
|
Re: New to group. HT-40 & SX-140
Am I the only one who read Dave's? message through to the end? He was asking about how to spot the Rx/Tx using the HT40/ SX-140 combo. Not the pros/cons of using a? D-104 mike.
?
Bob K3AC
In a message dated 8/30/2022 11:56:56 PM Eastern Standard Time, 1oldlens1@... writes:
?
I want to reinforce Walts statement.? If you like the sound of a D 104 bypass the internal amplifier.? Instructions for doing this are on the web.? Without the amo the D 104 is still one of the highest output mics ever on the market .? It should not overdrive the rig but eill have plenty of output.
Note that the D 104 is designed for high intelligibility under noisy conditions .? It boosts the highes and rolls off the.lows.? I have always found them tinny sounding.
Fwiw the D 204 was the fir D t crystal mic on the market (c 1933) early on there were a couple of versions including one with flat response. Crystal mics and phonograph pickups were popular at a time when electronic amplification was expensive,? the high output could save a stage if amplification.? Unfortunately crystals are vulnerable to moderate heat (a hot day),? humidity? and mechanic as l shock.?
?
?
?
?
?
?
-------- Original message --------
From: waltcates <cateswa@...>
Date: 8/30/22 7:39 PM (GMT-08:00)
Subject: Re: [HallicraftersRadios] New to group. HT-40 & SX-140
?
Great find. You may want?to rethink the choice of microphones. Like most all of the Hallicrafters of the 50's, 60's and 70's the HT-40 was designed?to function with a dynamic microphone. Over driving the audio ckts will cause spurs and garbled audio.
?
For more information on microphone selection for Hallicrafters rigs see:?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?Walt Cates, WD0GOF
?
Your past has no control over your future. Only your NOW can impact your future.
?
?
Hello everyone. I have been gifted with a HT-40 & SX-140 in relatively good shape. The tubes check ok at the moment. I am getting about 45 watts on 40M so that seems OK. I am planning on using an amplified D-104 and make an attempt at a AM contact. I have a T/R relay in operation being controlled by the TX and that works well. I am learning how to use the RX which is a bit different. Licensed in 1977 my first rig was a HW-101 so no split operation experience from that era. Also gifted was a Drake 2-NT & 2B (which has been replaced by a 2C). A HA-5 VFO is here also to use on either rig. My initial question is how do I spot the TX & RX? I have not quite figured out how to do that yet.
Thanks for any help and suggestions,
Dave KC3AM
|
Re: New to group. HT-40 & SX-140
I want to reinforce Walts statement.? If you like the sound of a D 104 bypass the internal amplifier.? Instructions for doing this are on the web.? Without the amo the D 104 is still one of the highest output mics ever on the market .? It should not overdrive the rig but eill have plenty of output. Note that the D 104 is designed for high intelligibility under noisy conditions .? It boosts the highes and rolls off the.lows.? I have always found them tinny sounding. Fwiw the D 204 was the fir D t crystal mic on the market (c 1933) early on there were a couple of versions including one with flat response. Crystal mics and phonograph pickups were popular at a time when electronic amplification was expensive,? the high output could save a stage if amplification.? Unfortunately crystals are vulnerable to moderate heat (a hot day),? humidity? and mechanic as l shock.?
toggle quoted message
Show quoted text
-------- Original message -------- From: waltcates <cateswa@...> Date: 8/30/22 7:39 PM (GMT-08:00) Subject: Re: [HallicraftersRadios] New to group. HT-40 & SX-140
Great find. You may want?to rethink the choice of microphones. Like most all of the Hallicrafters of the 50's, 60's and 70's the HT-40 was designed?to function with a dynamic microphone. Over driving the audio ckts will cause spurs and garbled audio.
For more information on microphone selection for Hallicrafters rigs see:?
?Walt Cates,
WD0GOF
?
Your past has no control over your future. Only your NOW can impact your future.
Hello everyone. I have been gifted with a HT-40 & SX-140 in relatively good shape. The tubes check ok at the moment. I am getting about 45 watts on 40M so that seems OK. I am planning on using an amplified D-104 and make an attempt at a AM contact. I have
a T/R relay in operation being controlled by the TX and that works well. I am learning how to use the RX which is a bit different. Licensed in 1977 my first rig was a HW-101 so no split operation experience from that era. Also gifted was a Drake 2-NT & 2B
(which has been replaced by a 2C). A HA-5 VFO is here also to use on either rig. My initial question is how do I spot the TX & RX? I have not quite figured out how to do that yet.
Thanks for any help and suggestions,
Dave KC3AM
|
Re: New to group. HT-40 & SX-140
Dave,
?
It's been many (over 50) years since I had my Novice station with separate Rx and Tx (Hallicrafters SX-110 and Heathkit DX-60B). But as I recall, I used an Dow Key coax relay, and I did NOT mute the receiver when I energized the relay to switch antenna from Rx to Tx. Then when I pressed the transmitter key, the antenna was disconnected to the receiver, but since it was unmuted, I could hear my CW note in the receiver which allowed me to zero beat my transmitted signal. Initially I had to use xtals, but as I recall when I upgraded to General and got the HG-10B VFO, it had a Spot circuit you could turn on that transmitted a low level carrier for spotting the receiver (I may be off on that as my memory of VFO operation with the DX-60B was brief). . On AM, you could do the same by putting the receiver in CW,? transmit in AM, and zerobeat your carrier in the receiver and you should be spotted (close enough on AM).?
?
Have fun/73,
Bob K3AC
In a message dated 8/30/2022 10:06:19 PM Eastern Standard Time, kc3am@... writes:
?
Hello everyone. I have been gifted with a HT-40 & SX-140 in relatively good shape. The tubes check ok at the moment. I am getting about 45 watts on 40M so that seems OK. I am planning on using an amplified D-104 and make an attempt at a AM contact. I have a T/R relay in operation being controlled by the TX and that works well. I am learning how to use the RX which is a bit different. Licensed in 1977 my first rig was a HW-101 so no split operation experience from that era. Also gifted was a Drake 2-NT & 2B (which has been replaced by a 2C). A HA-5 VFO is here also to use on either rig. My initial question is how do I spot the TX & RX? I have not quite figured out how to do that yet.
Thanks for any help and suggestions,
Dave KC3AM
|
Re: New to group. HT-40 & SX-140
Great find. You may want?to rethink the choice of microphones. Like most all of the Hallicrafters of the 50's, 60's and 70's the HT-40 was designed?to function with a dynamic microphone. Over driving the audio ckts will cause spurs and garbled audio.
For more information on microphone selection for Hallicrafters rigs see:?
?Walt Cates,
WD0GOF
?
Your past has no control over your future. Only your NOW can impact your future.
toggle quoted message
Show quoted text
Hello everyone. I have been gifted with a HT-40 & SX-140 in relatively good shape. The tubes check ok at the moment. I am getting about 45 watts on 40M so that seems OK. I am planning on using an amplified D-104 and make an attempt at a AM contact. I have
a T/R relay in operation being controlled by the TX and that works well. I am learning how to use the RX which is a bit different. Licensed in 1977 my first rig was a HW-101 so no split operation experience from that era. Also gifted was a Drake 2-NT & 2B
(which has been replaced by a 2C). A HA-5 VFO is here also to use on either rig. My initial question is how do I spot the TX & RX? I have not quite figured out how to do that yet.
Thanks for any help and suggestions,
Dave KC3AM
|
New to group. HT-40 & SX-140
Hello everyone. I have been gifted with a HT-40 & SX-140 in relatively good shape. The tubes check ok at the moment. I am getting about 45 watts on 40M so that seems OK. I am planning on using an amplified D-104 and make an attempt at a AM contact. I have a T/R relay in operation being controlled by the TX and that works well. I am learning how to use the RX which is a bit different. Licensed in 1977 my first rig was a HW-101 so no split operation experience from that era. Also gifted was a Drake 2-NT & 2B (which has been replaced by a 2C). A HA-5 VFO is here also to use on either rig. My initial question is how do I spot the TX & RX? I have not quite figured out how to do that yet.
Thanks for any help and suggestions,
Dave KC3AM
|
Thank you for your interest. The frequency jump is small (I think it's about 20 HZ and it takes a fraction of a second, but you can hear it) and the frequency returns to its place as before. The problem rarely occurs (once every few minutes). That's why I have measurement problems.
|
My 1st SR-400 internal VFO began jumping. It was one of the dog bone temp compensation? caps. Found one at Surplus Sales of Nebraska. ? Dale W$OP ?
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From: [email protected] [mailto:[email protected]] On Behalf Of Ki6NQT
Sent: Saturday, August 27, 2022 7:42 PM
To: [email protected]
Subject: Re: [HallicraftersRadios] SR-400 stability ? Just to be clear.? Have you put a counter on the output of the vfo?? Are the other oscillators stable??
Tim
|
Just to be clear.? Have you put a counter on the output of the vfo?? Are the other oscillators stable??
Tim
|
Thank you for your response. In one device there is the same problem in tx. I did not check tx in the second device. The pentiometer and relay are clean and stable.
There is still a DS4 (neon lamp) to check. DS4 is blinking.
Wojtek
|
Checking the voltage is a good start.
Ive had a couple varactor diodes go bad and do the same thing.
I the the sr150 has the same schm I would make sure the relays are clean, controls the voltage from the incremental tuning pot.
Tim
|
Hello there.
Does it do it in TX, RX or both?
|
Hello, I have a little problem with the trx SR-400.
The telegraph signal (sometimes) is floating in the receiver. For example, it quickly increases in frequency and quickly snaps back into place. I suspect it is a matter of voltage stability at the zener diode cr14. I have two SR400 devices and they have the same problem. Do you have any ideas on how to fix it?
Wojtek
|
Re: Restoration of lettering/numbers on knobs
Also remember the duplex option (print on both sides), and the
ability to print multiple pages on one sheet.?? I suggest the later
option for stuff that needs to have a hard copy but probably won't
ever be used.
OK sorry I got off topic
Tom
On 8/25/2022 16:33, Bill (Group Owner)
wrote:
toggle quoted message
Show quoted text
I just checked my HP printer the 8050 Photosmart and sure enough,
I found the "Mirror Image" check box, printed a single page and it
is reversed.
Can't think of a reason why that is included as an option.
--
K2WH
|
Re: Restoration of lettering/numbers on knobs
Interesting discussion. If you design and print your own PCB’s, you print in reverse on laser paper, and then iron it on the copper board. This makes it un-reversed. :)
For now, I have to run it through Adobe to reverse it, then print, and then iron. PITA.
73, Jamie
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Show quoted text
On Aug 25, 2022, at 4:08 PM, Trent N4DTF EM55 <trent.fleming@...> wrote:
? isn't this how they make the signs for the front of ambulances?
Not off topic - ambulances have radios.
73,
Trent N4DTF EM55
Bill , you can print a picture of yourself, and never use a mirror again. I’m sorry, for my flippant comment; the devil made me do it, or its too many pain pills. Don, but ...Trying to remain anonymous . ? ? I just checked my HP printer the 8050 Photosmart and sure enough, I found the "Mirror Image" check box, printed a single page and it is reversed.
Can't think of a reason why that is included as an option.
-- K2WH
-- Trent Fleming
?My blog on banking topics:
My web site
? ? ? ?
Follow me on FaceBook
? ? ? ?
Follow me on Twitter
? ? ? ?
|
Re: Restoration of lettering/numbers on knobs
isn't this how they make the signs for the front of ambulances?
Not off topic - ambulances have radios.
73,
Trent N4DTF EM55
Bill , you can print a picture of yourself, and never use a mirror again. I’m sorry, for my flippant comment; the devil made me do it, or its too many pain pills. Don, but ...Trying to remain anonymous . ? ? I just checked my HP printer the 8050 Photosmart and sure enough, I found the "Mirror Image" check box, printed a single page and it is reversed.
Can't think of a reason why that is included as an option.
-- K2WH
-- Trent Fleming
?My blog on banking topics:
My web site
? ? ? ?
Follow me on FaceBook
? ? ? ?
Follow me on Twitter
? ? ? ?
|
Re: Restoration of lettering/numbers on knobs
Bill , you can print a picture of yourself, and never use a mirror again. I’m sorry, for my flippant comment; the devil made me do it, or its too many pain pills. Don, but ...Trying to remain anonymous . ?
toggle quoted message
Show quoted text
From: [email protected] [mailto:[email protected]] On Behalf Of Bill (Group Owner)
Sent: Thursday, August 25, 2022 4:34 PM
To: [email protected]
Subject: Re: [HallicraftersRadios] Restoration of lettering/numbers on knobs? I just checked my HP printer the 8050 Photosmart and sure enough, I found the "Mirror Image" check box, printed a single page and it is reversed.
Can't think of a reason why that is included as an option.
-- K2WH
|
waltcates
Trent N4DTF EM55
don Root