Re: DR7 fitting partial success.
I have a Clearspeech Base that is a magic box and I also run a JPS NIR-12. Have used a Timewave DSP-9 with good results but the JPS and Clearspeech rock. 73 -Jim NU0C On Sun, 28 Mar 2021 18:32:33 -0700 "Mike Davidsohn G3ZCC" <mike@...> wrote: However an external DSP unit in line with an external speaker on the TR7 will cure that.
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Re: DR7 fitting partial success.
Hi Steve
I did the same, went over the alignment again because of all the pulling about.
It hadn't shifted a jot.
Good luck with yours and keep us posted how you get on.
Kind Regards
Mike
G3ZCC??
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Re: DR7 fitting partial success.
Hi Peter
Thank you for your kind words and yes hopefully my exploits will help someone else.
I have been using the TR7 side by side with my Yaesu FTDX 3000 during the contest this weekend the Drake has the edge in sensitivity but the Yaesu has the edge with selectivity, but only just.
It beats the TR7 on QRN reduction with its DNR which is quite spectacular..
However an external DSP unit in line with an external speaker on the TR7 will cure that.
The thing was that the TR7 held it's own under very busy conditions.
?
Kind Regards
Mike
G3ZCC??
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Re: DR7 fitting partial success.
Hi Roger
I have the transmitter of the pair, an early "duck egg" 2000, 2000 G Line, 2000A,B, E. and a KW Atlanta
Plus a KW 600 and KW 1000 Linear.
All working, if you need any schematics or help with yours, message me.
Kind Regards
Mike?
G3ZCC
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Re: Need Crystal freq. for 28.5 mhz in TR4C
Thanks for the reply.? Once I finish getting here working I will contact you regarding some crysta;s
Greg
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Re: Wanted - Drake TR-4C S-meter
Thanks Steve, That's good to know.
73, Doug
On Sunday, March 28, 2021, 6:47:58 AM CDT, Steve Wedge, W1ES/4 via groups.io <w1es@...> wrote:
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
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That's odd, I had no clearance problems at all with the German board. 73 -Jim NU0C On Sun, 28 Mar 2021 16:54:09 -0400 "Gary Woods" <garygarlic@...> wrote: I've finally gotten up the time/courage to get back into my TR7; have
fixed several bad counters on the DR-7 board, and figured out that
clearances for the replacement German made display board are so tight
that I have to pull off the dial lamp socket that clips on under it.
I recall that there was talk of Drake adding fish paper somewhere, but
danged if I can find the article.
I've found one benefit to my advancing years: I'm MUCH more cautious
with things that don't seem right, spending time with flashlight and
magnifier to figure out what's REALLY going on with things that once
fit fine and now don't!
TIA.
--
Gary Woods O- K2AHC Public keys at home.earthlink.net/~garygarlic, or get 0x1D64A93D via keyserver
fingerprint = E2 6F 50 93 7B C7 F3 CA 1F 8B 3C C0 B0 28 68
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The fish paper goes across the top of the PTO lamp metal and prevents the DR7 display solder pads from touching that grounded surface.
Gary
W0DVN
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Show quoted text
On Mar 28, 2021, at 3:54 PM, Gary Woods <garygarlic@...> wrote:
I've finally gotten up the time/courage to get back into my TR7; have
fixed several bad counters on the DR-7 board, and figured out that
clearances for the replacement German made display board are so tight
that I have to pull off the dial lamp socket that clips on under it.
I recall that there was talk of Drake adding fish paper somewhere, but
danged if I can find the article.
I've found one benefit to my advancing years: I'm MUCH more cautious
with things that don't seem right, spending time with flashlight and
magnifier to figure out what's REALLY going on with things that once
fit fine and now don't!
TIA.
--
Gary Woods O- K2AHC Public keys at home.earthlink.net/~garygarlic, or get 0x1D64A93D via keyserver
fingerprint = E2 6F 50 93 7B C7 F3 CA 1F 8B 3C C0 B0 28 68
--
This email has been checked for viruses by Avast antivirus software.
|
I've finally gotten up the time/courage to get back into my TR7; have
fixed several bad counters on the DR-7 board, and figured out that
clearances for the replacement German made display board are so tight
that I have to pull off the dial lamp socket that clips on under it.
I recall that there was talk of Drake adding fish paper somewhere, but
danged if I can find the article.
I've found one benefit to my advancing years: I'm MUCH more cautious
with things that don't seem right, spending time with flashlight and
magnifier to figure out what's REALLY going on with things that once
fit fine and now don't!
TIA.
--
Gary Woods O- K2AHC Public keys at home.earthlink.net/~garygarlic, or get 0x1D64A93D via keyserver
fingerprint = E2 6F 50 93 7B C7 F3 CA 1F 8B 3C C0 B0 28 68
--
This email has been checked for viruses by Avast antivirus software.
|
Jim,
Thank you, I had read that part in the manual after I posted my question.? I'll see what I can find out.? Been a ham since 1986, but just now starting to learn how things work so it may take me a while to figure it out, but I am all in.
Tony,
There is a good chance the AC3 needs rebuilt.? Thank you for the suggestion.
Steve,
I hope it isn't a tube, but if it is, which one(s) could be suspect?
Thank you all,
Cowan
N5QDH
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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
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-------- 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
>
>
>
>
>
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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
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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.
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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.
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So my TR-4CW is holding its? value.
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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
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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
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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
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Jim Shorney
Mike Davidsohn G3ZCC
Doug
gary schnakenberg
