No but after 60 yrs of troubleshooting and restoration I have figured out 45 year old caps will do? one thing for sure. Be leaking or soon will be.except for oil filled .73.Tony wa4jqs?
Sent via the Samsung GALAXY S? 5, an AT&T 4G LTE smartphone
toggle quoted message
Show quoted text
-------- Original message --------
From: "Jim Shorney via groups.io" <jshorney@...>
Date: 3/28/21 13:31 (GMT-05:00)
To: [email protected]
Subject: Re: [DRAKE-RADIO] TR-4C audio hum
Better to diagnose the problem first. You don't learn anything by shotgunning caps. :)
73
-Jim
NU0C
On Sun, 28 Mar 2021 17:14:57 +0000
"Tony Deprato" <tony.deprato@...> wrote:
> Replace the caps in the power supply and the can in the transmitter.
>
>
>
> Sent via the Samsung GALAXY S? 5, an AT&T 4G LTE smartphone
>
>
>
>
>
|
What new meter of any quality is cheap these days?
I managed to find new meters on the Bay of the same style for my PS-2000 a while back and just made new scales for them using the "METER" software.? They look terrific now.? The originals were working OK but the plastic housings were badly yellowed and would not clean up.
Fortunately all my Drake meters are working fine.? I did have to sub in a Plate Meter from a TR-4C parts rig into my TR-6 a while back due to the infamous "bouncy meter" syndrome.
73 and thanks for the info.
Peter
VE7PS
toggle quoted message
Show quoted text
On 2021-03-28 10:41 a.m., Jim Shorney wrote: You mean the meters? I think so but they are not cheap. Although you can often find used ones that are close enough that they can be made to work on eBay. I accidentally found a spare plate current meter for my L-4B when I purchased a 0-1A movement via eBay just because I wanted to see if it was internally shunted. Fixed a WV-4 with an eBay meter and have another for a bad W-4 on my shelf of despair, er, disrepair.
73
-Jim
NU0C
On Sun, 28 Mar 2021 10:27:14 -0700
"VE7PS" <ve7ps@...> wrote:
Excellent!
Jim - these are still available.. correct?
PS
On 2021-03-28 8:11 a.m., [email protected] Notification wrote:
The following files have been uploaded to the Files area of the
[email protected] group.
* /Jewell/Jewell-MS-Series.pdf
</g/DRAKE-RADIO/files/Jewell/Jewell-MS-Series.pdf>
* /Jewell/Jewell.pdf
</g/DRAKE-RADIO/files/Jewell/Jewell.pdf>
* /Jewell/Jewell_S-Series_Specs.pdf
</g/DRAKE-RADIO/files/Jewell/Jewell_S-Series_Specs.pdf>
*By:* Jim Shorney <jshorney@...>
*Description:*
Jewell MS2T and MS3T meters were used in 4 and 7 line accessories.
|
Your TR-4CW is holding its value. The American Dollar on the other hand, has not. Jim - WB6TNF?
On Sun, Mar 28, 2021 at 12:00 PM, gary schnakenberg <wb2jax@...> wrote: So my TR-4CW is holding its? value.
|
So my TR-4CW is holding its? value.
|
This could also be a bad tube in that chain.? I've heard of filaments touching the cathode that can cause this.
Steve Wedge, W1ES/4
Time flies like an arrow.? Fruit flies like a banana.
Sent with Secure Email.
‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
On Sunday, March 28, 2021 12:28 PM, Cowan Bowman <cowan@...> wrote:
Hello all.
The rig has an audio hum that is heard on the speaker when switching to any band except 80 and 20 meters.? When 80 or 20 is selected the hum is not present.? I still can hear transmissions by others, but the hum is fairly loud and makes it difficult.
According to the previous owner, the radio had not been powered up in over 25 years. So far I have cleaned out all the dust, replaced a couple bad resistors (R163 and R192).? Tested all of the tubes and they are all good.
Any words of advice on what I should do to troubleshoot what it could be?
Thanks,
Cowan
N5QDH
|
You mean the meters? I think so but they are not cheap. Although you can often find used ones that are close enough that they can be made to work on eBay. I accidentally found a spare plate current meter for my L-4B when I purchased a 0-1A movement via eBay just because I wanted to see if it was internally shunted. Fixed a WV-4 with an eBay meter and have another for a bad W-4 on my shelf of despair, er, disrepair. 73 -Jim NU0C On Sun, 28 Mar 2021 10:27:14 -0700 "VE7PS" <ve7ps@...> wrote: Excellent!
Jim - these are still available.. correct?
PS
On 2021-03-28 8:11 a.m., [email protected] Notification wrote:
The following files have been uploaded to the Files area of the
[email protected] group.
* /Jewell/Jewell-MS-Series.pdf
</g/DRAKE-RADIO/files/Jewell/Jewell-MS-Series.pdf>
* /Jewell/Jewell.pdf
</g/DRAKE-RADIO/files/Jewell/Jewell.pdf>
* /Jewell/Jewell_S-Series_Specs.pdf
</g/DRAKE-RADIO/files/Jewell/Jewell_S-Series_Specs.pdf>
*By:* Jim Shorney <jshorney@...>
*Description:*
Jewell MS2T and MS3T meters were used in 4 and 7 line accessories.
|
Better to diagnose the problem first. You don't learn anything by shotgunning caps. :) 73 -Jim NU0C On Sun, 28 Mar 2021 17:14:57 +0000 "Tony Deprato" <tony.deprato@...> wrote: Replace the caps in the power supply and the can in the transmitter.
Sent via the Samsung GALAXY S? 5, an AT&T 4G LTE smartphone
|
|
|
Replace the caps in the power supply and the can in the transmitter.
Sent via the Samsung GALAXY S? 5, an AT&T 4G LTE smartphone
|
There's your clue. 80 and 20 do not use heterodyne premix crystals. Look around the pre mix / het osc V1 and the crystals. Check grounds, look for excessive ripple on the B+. 73 -Jim NU0C On Sun, 28 Mar 2021 09:28:05 -0700 "Cowan Bowman" <cowan@...> wrote: Hello all.
The rig has an audio hum that is heard on the speaker when switching to any band except 80 and 20 meters.? When 80 or 20 is selected the hum is not present.? I still can hear transmissions by others, but the hum is fairly loud and makes it difficult.
According to the previous owner, the radio had not been powered up in over 25 years. So far I have cleaned out all the dust, replaced a couple bad resistors (R163 and R192).? Tested all of the tubes and they are all good.
Any words of advice on what I should do to troubleshoot what it could be?
Thanks,
Cowan
N5QDH
|
Hello all.
The rig has an audio hum that is heard on the speaker when switching to any band except 80 and 20 meters.? When 80 or 20 is selected the hum is not present.? I still can hear transmissions by others, but the hum is fairly loud and makes it difficult.
According to the previous owner, the radio had not been powered up in over 25 years. So far I have cleaned out all the dust, replaced a couple bad resistors (R163 and R192).? Tested all of the tubes and they are all good.
Any words of advice on what I should do to troubleshoot what it could be?
Thanks,
Cowan
N5QDH
|
Re: Meter hardware for MN-7?
MS2T for 4-line, MS3T for 7-line. 73 -Jim NU0C On Sun, 28 Mar 2021 08:24:56 -0700 "VE7PS" <ve7ps@...> wrote: Jim - Yeah, I knew you'd offer a spec sheet!? I couldn't remember which
meter it was they used....tough to look up when you don't know what it is.
*But*...I think these were the meters used on the W-4/MN-4/MN-2000.? If
you look at the side profile, you can see it is curved inwards, top to
bottom.? The MN-7/2700/WH-7 meters are flat-faced bezel mount meters.
Or am I way off base here?
I am nowhere near my stuff and cannot measure any of them at the moment,
or try a nut either.? Later in the week....yes.
73
Peter
VE7PS
On 2021-03-28 7:57 a.m., Jim Shorney wrote:
They have these things called spec sheets now y'know... ;)
er
The attached clip from a Jewell cut sheet should be of help. I believe the 7-line meters are MS3Tx series.
73
-Jim
NU0C
On Sun, 28 Mar 2021 07:42:18 -0700
"VE7PS" <ve7ps@...> wrote:
Larry:
I've been working on a project for the W-4 and the WH-7 meters recently,
and just happen to have a measurement here with me.
The meter studs on the WH-7, which is the same as the MN-7 and MN-2700,
measured roughly 3/16" diameter.? Believe they are are course thread,
though I wasn't concerned about that...just the clearance.? You could
try a 10-24 (or 10-32?).? They are definitely a smaller thread than the
older W-4, which I believe is 1/4-20.? I doubt they are metric as those
meters were made in the USA.
I can verify by midweek if still needed.
73
Peter
VE7PS
On 2021-03-27 11:23 p.m., Larry Gadallah wrote:
Does anyone know what size the nuts for the meter inputs on an MN-7
(or an MN-2700 too, I think) are?
73,
Larry, NM7A
|
Re: Meter hardware for MN-7?
Jim - Yeah, I knew you'd offer a spec sheet!? I couldn't remember
which meter it was they used....tough to look up when you don't know
what it is.
But...I think these were the meters used on the
W-4/MN-4/MN-2000.? If you look at the side profile, you can see it
is curved inwards, top to bottom.? The MN-7/2700/WH-7 meters are
flat-faced bezel mount meters.
Or am I way off base here?
I am nowhere near my stuff and cannot measure any of them at the
moment, or try a nut either.? Later in the week....yes.
73
Peter
VE7PS
On 2021-03-28 7:57 a.m., Jim Shorney
wrote:
toggle quoted message
Show quoted text
They have these things called spec sheets now y'know... ;)
er
The attached clip from a Jewell cut sheet should be of help. I believe the 7-line meters are MS3Tx series.
73
-Jim
NU0C
On Sun, 28 Mar 2021 07:42:18 -0700
"VE7PS" <ve7ps@...> wrote:
Larry:
I've been working on a project for the W-4 and the WH-7 meters recently,
and just happen to have a measurement here with me.
The meter studs on the WH-7, which is the same as the MN-7 and MN-2700,
measured roughly 3/16" diameter.? Believe they are are course thread,
though I wasn't concerned about that...just the clearance.? You could
try a 10-24 (or 10-32?).? They are definitely a smaller thread than the
older W-4, which I believe is 1/4-20.? I doubt they are metric as those
meters were made in the USA.
I can verify by midweek if still needed.
73
Peter
VE7PS
On 2021-03-27 11:23 p.m., Larry Gadallah wrote:
Does anyone know what size the nuts for the meter inputs on an MN-7
(or an MN-2700 too, I think) are?
73,
Larry, NM7A
|
The following files have been uploaded to
the Files area of the [email protected] group.
By: Jim Shorney <jshorney@...>
Description:
Jewell MS2T and MS3T meters were used in 4 and 7 line accessories.
|
Re: Meter hardware for MN-7?
They have these things called spec sheets now y'know... ;) The attached clip from a Jewell cut sheet should be of help. I believe the 7-line meters are MS3Tx series. 73 -Jim NU0C On Sun, 28 Mar 2021 07:42:18 -0700 "VE7PS" <ve7ps@...> wrote: Larry:
I've been working on a project for the W-4 and the WH-7 meters recently,
and just happen to have a measurement here with me.
The meter studs on the WH-7, which is the same as the MN-7 and MN-2700,
measured roughly 3/16" diameter.? Believe they are are course thread,
though I wasn't concerned about that...just the clearance.? You could
try a 10-24 (or 10-32?).? They are definitely a smaller thread than the
older W-4, which I believe is 1/4-20.? I doubt they are metric as those
meters were made in the USA.
I can verify by midweek if still needed.
73
Peter
VE7PS
On 2021-03-27 11:23 p.m., Larry Gadallah wrote:
Does anyone know what size the nuts for the meter inputs on an MN-7
(or an MN-2700 too, I think) are?
73,
Larry, NM7A
|
Re: Meter hardware for MN-7?
Larry:
I've been working on a project for the W-4 and the WH-7 meters
recently, and just happen to have a measurement here with me.?
The meter studs on the WH-7, which is the same as the MN-7 and
MN-2700, measured roughly 3/16" diameter.? Believe they are are
course thread, though I wasn't concerned about that...just the
clearance.? You could try a 10-24 (or 10-32?).? They are definitely
a smaller thread than the older W-4, which I believe is 1/4-20.? I
doubt they are metric as those meters were made in the USA.
I can verify by midweek if still needed.
73
Peter
VE7PS
On 2021-03-27 11:23 p.m., Larry
Gadallah wrote:
toggle quoted message
Show quoted text
Does anyone know what size the nuts for the meter inputs on an
MN-7 (or an MN-2700 too, I think) are?
73,
Larry, NM7A
|
Re: Wanted - Drake TR-4C S-meter
Doug, all the TR-3/TR-4 meters are interchangeable.?
Be aware that some of them have a problem with damping (frequently called “bouncy” or “bouncing”). Ask before you buy.?
73,
Steve Wedge, W1ES/4
Time flies like an arrow.? Fruit flies like a banana.
Sent from ProtonMail for iOS
On Sun, Mar 28, 2021 at 00:17, Doug < ke4vbg@...> wrote: Hello
I am looking for an S-meter that will work in my TR-4C. I'm not sure if a TR-4 or TR-3 are compatible. Service Manual does not list these in the Parts List and can't find what the Range is. Any help is appreciated.
Doug KE4VBG
|
Does anyone know what size the nuts for the meter inputs on an MN-7 (or an MN-2700 too, I think) are?
73,
Larry, NM7A
|
Re: Drake Transmitting Convertors
For one thing it probably would have been way too expensive for the price point of the rigs. Phase locked loops had been around decades before that but it was only cheap IC technology that brought them to the forefront. The CB radio craze helped with that. How do you build a cheap 40 channel consumer radio good enough to meet FCC specs without a raft of crystals? The PLL01 chip of course. It was a game changer. I was told a story by a Hy-Gain engineer once that suggested that chip may have been based on one of their designs which was essentially the same generation of tech that was used in the 7-Line. 73 -Jim NU0C On Sat, 27 Mar 2021 21:12:27 -0700 "Steve Beaman" <beamanator@...> wrote: Hi Gary,
I have the Drake C-line twins as well as a Drake FS-4 synthesizer.
The FS-4 is as stable as a rock regardless of temperature swings, so I know that Drake had the ability to build driftless gear way back when. I just don’t understand why they didn’t apply that frequency and phase locking technology to the C-line.
At any rate, I would love to be able to apply that technology to my R-4C, but don’t know where to begin.
— Steve, W?PZ
On Mar 27, 2021, at 4:03 PM, Tony Deprato <tony.deprato@...> wrote:
?
Better yet call cq and not Be on 3.657.5.and not 3.657.000.
Sent via the Samsung GALAXY S? 5, an AT&T 4G LTE smartphone
-------- Original message --------
From: "kq2q via groups.io" <kq2q@...>
Date: 3/27/21 18:59 (GMT-05:00)
To: [email protected]
Subject: Re: [DRAKE-RADIO] Drake Transmitting Convertors
Peter
I can remember when I would CQ on 40 meters and tune at least +\- 25 kHz up and down for a response.
Frequency was not that important as long as inbounds.
Drift was not too important- just retune the RX. Walk around a bit.
Nowadays if you are 73 cycles off; oh boy!
?
Bob KQ2Q
On Mar 27, 2021, at 6:34 PM, wb6ogd <garywinblad@...> wrote:
?
?Hi Peter,
Ok, I just have to comment...
I was going to when you said you were
going to build my cheap FS-4.. I might be
able to actually push you over the edge..
The Drake’s were very stable by 1964
standards but today, they are really drift
monsters....
What i am running here is an advanced
version I call my FS-5 with advanced
stability.
If you build Bernie and my FS-4B hardware (with
digital dial) you could have a Drake that is
comparable to most new rigs in stability.
Simple theory is, measure the PTO
frequency and if it drifts, you offset the
band oscillator (Si5351 crystal based
synthesizer) by the opposite amount to
cancel the PTO drift. I am doing this now
and it is terrific, turn the Drake on cold,
tune in the net, then listen all day without
changing the PTO, it is crystal locked!
I also have a mode I call channel lock...
Most operation nowadays is on even KHz
frequencies, so I only lock to the KHz.
Instant exactly “on frequency”, no
complaints from the new guys?
Real easy tuning, my Kenwood can’t even do
this!
Parts cost can be as low as $11, I think.
Plus, you have all bands with NO old drifted
crystals needed.
My FS-5 design is still being developed but if anyone wants something like the above,
maybe I can get Bernie to help me release
it.
73,
Gary
WB6OGD
On Mar 27, 2021, at 2:45 PM, VE7PS <ve7ps@...:
? Rick:
I am not currently on the air with my TC-2/6 but I have in the past used them.
While not too bad for casual VHF operating on CW/SSB, they are not stable enough as is for any of the digital modes. I was getting drift complaints on occasion from the SSB guys at times. My answer...."do you have big knob on the front of your radio for tuning?" OK - not really....but I did think that! Indeed some of that drift could be from the R-4/T-4 that was running the xverters at the time. Need to check that out further one day.
The receivers are not all that hot and would benefit from a good low noise preamp ahead of them. I did some simple comparison testing a few years ago against my SSB Electronics xverters and they were not as sensitive, though I did not go as far as quantifying that difference.
I like to operate them just for fun, because I can. I just wish I lived in an area that some VHF DX was possible...this after almost 40 years of VHF/UHF DX'ing when I Iived in EN86 and FN02. I am almost surrounded by mountains where I am now in DN09, though I do have a good shot at the moon most of the time and am planning to get back into EME again. I won't be using the Drakes!
I also have a P & H 6-150 100 watt 6 meter transmitting converter that is fun to play with too. Brings back memories from using one of these in our 6m station at VE3ONT during the VHF contests in the mid-70's.
73
Peter
VE7PS
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Re: Drake Transmitting Convertors
Hi Gary,
I have the Drake C-line twins as well as a Drake FS-4 synthesizer.
The FS-4 is as stable as a rock regardless of temperature swings, so I know that Drake had the ability to build driftless gear way back when. ?I just don’t understand why they didn’t apply that frequency and phase locking technology to the C-line.
At any rate, I would love to be able to apply that technology to my R-4C, but don’t know where to begin. ?
— Steve, W?PZ
toggle quoted message
Show quoted text
On Mar 27, 2021, at 4:03 PM, Tony Deprato <tony.deprato@...> wrote:
?
Better yet call cq and not Be on 3.657.5.and not 3.657.000.
Sent via the Samsung GALAXY S? 5, an AT&T 4G LTE smartphone
-------- Original message --------
From: "kq2q via groups.io" <kq2q@...>
Date: 3/27/21 18:59 (GMT-05:00)
To: [email protected]
Subject: Re: [DRAKE-RADIO] Drake Transmitting Convertors
Peter
I can remember when I would CQ on 40 meters and tune at least +\- 25 kHz up and down for a response.?
Frequency was not that important as long as inbounds.?
Drift was not too important- just retune the RX. Walk around a bit.?
Nowadays if you are 73 cycles off; oh boy!
?
Bob KQ2Q
On Mar 27, 2021, at 6:34 PM, wb6ogd <garywinblad@...> wrote:
?
?Hi Peter,
Ok, I just have to comment...
I was going to when you said you were?
going to build my cheap FS-4.. ?I might be
able to actually push you over the edge..
The Drake’s were very stable by 1964
standards but today, they are really drift
monsters....
What i am running here is an advanced?
version I call my FS-5 with advanced?
stability.
If you build Bernie and my FS-4B hardware (with
digital dial) you could have a Drake that is
comparable to most new rigs in stability.
Simple theory is, measure the PTO
?frequency and if it drifts, you offset the?
band oscillator (Si5351 crystal based
synthesizer) by the opposite amount to
cancel the PTO drift. ?I am doing this now
and it is terrific, turn the Drake on cold,
tune in the net, then listen all day without?
changing the PTO, it is crystal locked!
I also have a mode I call channel lock...
Most operation nowadays is on even KHz
frequencies, so I only lock to the KHz.
Instant exactly “on frequency”, no
?complaints from the new guys?
Real easy tuning, my Kenwood can’t even do
this!
Parts cost can be as low as $11, I think.
Plus, you have all bands with NO old drifted
crystals needed.
My FS-5 design is still being developed but if anyone wants something like the above,
maybe I can get Bernie to help me release?
it.
73,
Gary
WB6OGD?
On Mar 27, 2021, at 2:45 PM, VE7PS <ve7ps@...:
? Rick:
I am not currently on the air with my TC-2/6 but I have in the past used them.
While not too bad for casual VHF operating on CW/SSB, they are not stable enough as is for any of the digital modes.? I was getting drift complaints on occasion from the SSB guys at times.? My answer...."do you have big knob on the front of your radio for tuning?"?
OK - not really....but I did think that!? Indeed some of that drift could be from the R-4/T-4 that was running the xverters at the time.? Need to check that out further one day.
The receivers are not all that hot and would benefit from a good low noise preamp ahead of them.? I did some simple comparison testing a few years ago against my SSB Electronics xverters and they were not as sensitive, though I did not go as far as quantifying
that difference.?
I like to operate them just for fun, because I can.? I just wish I lived in an area that some VHF DX was possible...this after almost 40 years of VHF/UHF DX'ing when I Iived in EN86 and FN02.? I am almost surrounded by mountains where I am now in DN09, though
I do have a good shot at the moon most of the time and am planning to get back into EME again. I won't be using the Drakes!
I also have a P & H 6-150 100 watt 6 meter transmitting converter that is fun to play with too.? Brings back memories from using one of these in our 6m station at VE3ONT during the VHF contests in the mid-70's.
73
Peter
VE7PS
--
Steve? W0PZ
|
gary schnakenberg
Jim Shorney
Larry Gadallah