Re: DR7 fitting partial success.
Hi Mike, The loose left wire is for segment F. The center wire is for segment A. The right wire is for segment B. Suggest re-soldering all three wires.
You can use an ohmmeter to check for continuity from the F, A & B wires to the the F, A & B segments for the 4 LSD (right) digits at the LEDs mounting angle header. From the front of the DR7 pin 1 is the far left angle header pin. From the F wire there should be continuity to pin 22. From the A wire there should be continuity to pin 21. From the B wire there should be continuity to pin 20.
I don't know why DF4NW decided to use the 3 wires as the F, A & B signals are already on the aftermarket LED circuit board. Likely to make the new circuit board look more like the originals LEDs installation.
73
Roger VE7LB
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I¡¯m currently using a Nye Viking MB-V-A. Built like a tank and available for around $300. I¡¯ve been using it to drive balanced antennas with the L7 and it takes everything I can give it.?
Steve Wedge, W1ES/4
Time flies like an arrow.? Fruit flies like a banana.
Sent from ProtonMail Mobile
On Sun, Mar 21, 2021 at 14:22, AC9PA via groups.io < byroncordes@...> wrote: Well if where talking tuners ! Ten Tec L tuner works but cost is high .
On Mar 21, 2021, at 12:48 PM, Jim Shorney <jshorney@...> wrote:
?
I was just thinking the same thing. I have a Murch sitting atop my MN2700. And a second homebrew knockoff awaiting cleanup. Spent less money than a night on the town for both combined.
73
-Jim
NU0C
On Sun, 21 Mar 2021 16:45:41 +0000
"Dick" <w1ksz@...> wrote:
> Look for a Mutch UT-2000B (not the A). They go for short money
> and will load up the proverbial bedspring.
>
> 73, Dick, W1KSZ
> ________________________________
> From: [email protected] <[email protected]> on behalf of Billy Pickering KO4INE <pickeringw@...>
> Sent: Sunday, March 21, 2021 9:16 AM
> To: [email protected] <[email protected]>
> Subject: Re: [DRAKE-RADIO] MN2000
>
> We have a huge hamfest coming up this next Saturday in Sevierville that I'm going to keep an eye out there and see what I can find. Thanks everyone.
>
>
>
>
>
>
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I had one of these years ago. I remember on 160 that it wouldn¡¯t do legal limit ¡ª about 800W before it arced. Good tuner, though.?
Steve Wedge, W1ES/4
Time flies like an arrow.? Fruit flies like a banana.
Sent from ProtonMail Mobile
On Sun, Mar 21, 2021 at 12:45, Dick < w1ksz@...> wrote:
Look for a Mutch UT-2000B (not the A). They go for short money
and will load up the proverbial bedspring.
73, Dick, W1KSZ
We have a huge hamfest coming up this next Saturday in Sevierville that I'm going to keep an eye out there and see what I can find. Thanks everyone.
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Re: DR7 fitting partial success.
Hi Fred?
I was going to buy a TR7 back in the day, got warned off, spent more money and bought a Triumph Stag.
After three engines I sold it and bought a Lotus Sunbeam.
Best car I ever had,
Kind Regards
Mike
G3ZCC
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Re: DR7 fitting partial success.
Hi Roger
Thanks for that, I just checked and looking at the board from the front, there is a bad solder joint on the left wire link of the three.
Just resoldered it, it came off in my hand.
Fitting some blue LED's to the meter and PTO today replacing the two bulbs, cant wait to check the DR7 out after everything is all back together.
Kind Regards
Mike
G3ZCC??
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Re: DR7 fitting partial success.
Hahaha
I bought a blue Triumph TR7 like that but a hard top in 1985 with my ill gotten gains from my first job overseas
AND
I bought? a Drake B line. The previous owner had upgraded to a Drake TR7
73 Fred G4BWP
Hoarder of fine valved radios
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Re: WTB: lonely Final Cage for T-4Xb
Hi Ryan
No luck so far with a replacement.?
Bernie suggested that I Fab one from His me Depot material. That¡¯s a possibility.?
If you have time, please take a look.? I would gladly reimburse for the cage plus postage.?
Thank you! ?73 Bob KQ2Q. Danielsville. GA. 30633
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On Mar 21, 2021, at 10:23 PM, Ryan Scott via groups.io <tweeker42000@...> wrote:
?
Any Luck?? I have some parts units in the garage.? I can look tomorrow after work
Ryan N7QJ
On Saturday, March 20, 2021, 11:50:22 AM PDT, kq2q <kq2q@...> wrote:
Hello All
Looking for a final cage for my T-4Xb
I have reworked the Chassis and need the Final Cage
Thanks
?Bob. kQ2Q. Danielsville GA
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I posted a link the Lew McCoy's article in an earlier message. And here are some shots of the homebrew unit I have, likely build from guidance found in that article. 73 -Jim NU0C On Mon, 22 Mar 2021 01:01:24 +0000 (UTC) "Ralph Mowery via groups.io" <ku4pt@...> wrote: Murch did not try to claim it was his design but was a copy of the Ultimate Transmatch? by Lewis McCoy.
Murch just put it into production and there were several versions of it over the years.
While I am not sure, I think Murch made many of the components as they were hard to find.
Ralph ku4pt
On Sunday, March 21, 2021, 04:03:48 PM EDT, Steve Bookout, NR4M <steve@...> wrote:
None of us know everything.?¡®Murch¡¯ is an old school brand of basic, well built, tuners.?
Much better, and beefier than many current tuners.?
73 de Steve, NR4M?
On Mar 21, 2021, at 3:57 PM, Billy Pickering KO4INE <pickeringw@...> wrote:
?It's another brand of antenna tuner made by Murch Electronics.
_._
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Re: WTB: lonely Final Cage for T-4Xb
Any Luck?? I have some parts units in the garage.? I can look tomorrow after work
Ryan N7QJ
On Saturday, March 20, 2021, 11:50:22 AM PDT, kq2q <kq2q@...> wrote:
Hello All
Looking for a final cage for my T-4Xb
I have reworked the Chassis and need the Final Cage
Thanks
?Bob. kQ2Q. Danielsville GA
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Re: DR7 fitting partial success.
Hi Mike, Your two missing MSD LEDs segment signals, F and A, are both carried by the wire jumpers to the top of the display board. Check the continuity from the F and A cathode segments back to the DR7. See message 56280 from Joe as it has a picture that shows the wires to the two MSD LEDs including the third B segment wire.
73
Roger VE7LB
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Murch did not try to claim it was his design but was a copy of the Ultimate Transmatch? by Lewis McCoy.
Murch just put it into production and there were several versions of it over the years.
While I am not sure, I think Murch made many of the components as they were hard to find.
Ralph ku4pt
On Sunday, March 21, 2021, 04:03:48 PM EDT, Steve Bookout, NR4M <steve@...> wrote:
None of us know everything.? ¡®Murch¡¯ is an old school brand of basic, well built, tuners.?
Much better, and beefier than many current tuners.?
73 de Steve, NR4M? On Mar 21, 2021, at 3:57 PM, Billy Pickering KO4INE <pickeringw@...> wrote:
?It's another brand of antenna tuner made by Murch Electronics.
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And here is a pic of my Murch. The new knobs nicely hide the holes from the mounting of the cheap junk verniers. 73 -Jim NU0C On Sun, 21 Mar 2021 15:38:52 -0500 "Jim Shorney" <jshorney@...> wrote: Yeah, it's sort of a dark gray. I thought maybe I had a pic of mine with the green knobs. I'll do that later.
I'm more of a function over form guy. It it does the job I don't care how it looks. In my case it matches a Hy-Gain Penetrator 500 from 10 through 12 Meters.
73
-Jim
NU0C
On Sun, 21 Mar 2021 13:32:51 -0700
"VE7PS" <ve7ps@...> wrote:
Jim:
You are right about the A model being green...or at least the cabinet
is.? Front panel looks like dark gray??? But maybe I have only ever seen
them in B & W QST's!!!? Not too many of those ever made it north of the
49th.
The B model appears to have been a gray hammertone cabinet, unless the
one I saw in an old Ebay listing has been painted.? Front panel looks
black in the pic I found.
Great tuner from all reports....but maybe not a good match for a Drake
4-line station, at least from a cosmetic standpoint.
PS
On 2021-03-21 1:23 p.m., Jim Shorney wrote:
Commercial version of Lew McCoy's "Ultimate Transmatch" described in the linked article. This is what mine looks like (except for the outer knobs).
73
-Jim
NU0C
On Sun, 21 Mar 2021 12:51:12 -0700
"Joe Wolfe" <w7rkn.7@...> wrote:
At the appearance of being incredibly dumb, what is a 'Murch'?
Joe - W7RKN
-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Jim Shorney
Subject: Re: [DRAKE-RADIO] MN2000
This is the tech behind the Murch. And also why you find homebrew variants.
73
-Jim
NU0C
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Of course, but I did not want to characterize them as CB connectors. You will find a 2 pin version on the back of the R7. 73 -Jim NU0C On Sun, 21 Mar 2021 18:51:31 -0500 "Jeffrey Angus" <jdangus@...> wrote: On 3/21/21 3:34 PM, Jim Shorney wrote:
No, the SP75 came with 4 pin aviation connectors like what were common for mic connectors on rigs of that era. And were on 90% of every CB radio.
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Yes, I think that is where I read it. 73 -Jim NU0C On Sun, 21 Mar 2021 16:53:38 -0700 "VE7PS" <ve7ps@...> wrote: I have heard of that legend....perhaps Loughmiller's book?
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I have heard of that legend....perhaps Loughmiller's book?
But sure seems to be something more than just a coincidence given the dual connection with the TR-3, TR-4, TR-5, TR-6, TR-7, and even the Drake prototype TR-8!
Ahhh....but Drake had a TR-4CW/rit!? Take that Triumph!
73
PS
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On 2021-03-21 1:54 p.m., Jim Shorney wrote:
Interestingly, legend has it that Bob had a fondness for British sports cars which had some impact on how he named radios.
My brother had a TR-6 (four wheel version). Seems to me like he was always tinkering with it.
73
-Jim
NU0C
On Sun, 21 Mar 2021 13:40:39 -0700
"VE7PS" <ve7ps@...> wrote:
Hmmmmm....nothing looks cast in stone.
Wikipedia shows the Triumph with no hyphen (TR7) in the whole article.
Drake shows the radio as "*TR7*" on the front page of the manual, and on
the front panel of the radio itself, but refers to it over and over as
*TR-7* inside the manual.
Too bad we can't ask Bob what he really called it!
Enough....gotta go get my vaccination!!!
73
PS
On 2021-03-21 1:26 p.m., Jim Shorney wrote:
No, I mean the TR7, not the TR-7.
73
-Jim
NU0C
On Sun, 21 Mar 2021 13:04:36 -0700
"VE7PS" <ve7ps@...> wrote:
Jim -
I would challenge your claim of the 1st blue TR-7.? I would think that
belongs to Triumph Motors, 3 years before the Drake!? ;-)
TRIUMPH TR7 BUYER'S GUIDE | Classics World
73
Peter
VE7PS
On 2021-03-21 11:01 a.m., Jim Shorney wrote:
More likely it is a broken trace than anything else. The display board is a nasty bugger to unsolder. The LEDs are a standard off the shelf pinout, you could replace them if bad. Not that I am discouraging you from sending DF4NW some money, he is a good guy. I bought the first blue display in the original LED size from him. Since I had already changed the ALC lamp to blue I had the first all blue TR7 in the world, a claim that has not been challenged to this day!
73
-Jim
NU0C
On Sun, 21 Mar 2021 10:49:07 -0700
"Mike Davidsohn G3ZCC" <mike@...> wrote:
Hi Jim
Managed to repair one of the spare PTO's all fitted back and seems to be? working ok.
Not putting the front back as I am changing the bulbs to blue LED's.
Then to the DR7 will check through again, thanks for the tip on checking the segments, will do that tomorrow.
If those LED's have a problem I will check out DF4NW to see if I can get a replacement.
Hoping it's just a solder joint.
Kind Regards
Mike
G3ZCC
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On 3/21/21 3:34 PM, Jim Shorney wrote: No, the SP75 came with 4 pin aviation connectors like what were common for mic connectors on rigs of that era. And were on 90% of every CB radio. -- "I am a river to my people." Jeff-1.0 WA6FWI www.foxsmercantile.com
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I've got an SW1 I found at a local Goodwill for $35. The keypad was non-functional due to cracked solder joints. Easy fix. Nice little radio. 73 -Jim NU0C On Sun, 21 Mar 2021 19:18:59 -0400 "John" <johnk5mo@...> wrote: I had a SW2 and it too had great audio out of the front firing speaker. It
was one of the best-sounding SW radios I've owned. Sadly, the synth went
bad and I gave the remains away. It was perhaps the best chairside
shortwave receivers available.
John K5MO
On Sun, Mar 21, 2021 at 2:42 PM Donald Rusbult via groups.io <drusbult2003=
[email protected]> wrote:
I found a nice little Drake PRN 1000 locally. Nice rich sound and looks
good too. Only paid $100.00 for it. Nice add to my twins.
|
I had a SW2 and it too had great audio out of the front firing speaker. It was one of the best-sounding SW radios I've owned.? Sadly, the synth went bad and I gave the remains away. It was perhaps the best chairside shortwave receivers available.
John K5MO
On Sun, Mar 21, 2021 at 2:42 PM Donald Rusbult via <drusbult2003= [email protected]> wrote: I found a nice little Drake PRN 1000 locally. Nice rich sound and looks good too. Only paid $100.00 for it. Nice add to my twins.
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Re: DR7 fitting partial success.
Picky, picky, picky... :-)
Tony - W9JXN
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On Mar 21, 2021, at 3:26 PM, Jim Shorney <jshorney@...> wrote:
?
No, I mean the TR7, not the TR-7.
73
-Jim
NU0C
On Sun, 21 Mar 2021 13:04:36 -0700
"VE7PS" <ve7ps@...> wrote:
Jim -
I would challenge your claim of the 1st blue TR-7. I would think that
belongs to Triumph Motors, 3 years before the Drake! ;-)
TRIUMPH TR7 BUYER'S GUIDE | Classics World
73
Peter
VE7PS
On 2021-03-21 11:01 a.m., Jim Shorney wrote:
More likely it is a broken trace than anything else. The display board is a nasty bugger to unsolder. The LEDs are a standard off the shelf pinout, you could replace them if bad. Not that I am discouraging you from sending DF4NW some money, he is a good guy. I bought the first blue display in the original LED size from him. Since I had already changed the ALC lamp to blue I had the first all blue TR7 in the world, a claim that has not been challenged to this day!
73
-Jim
NU0C
On Sun, 21 Mar 2021 10:49:07 -0700
"Mike Davidsohn G3ZCC" <mike@...> wrote:
Hi Jim
Managed to repair one of the spare PTO's all fitted back and seems to be working ok.
Not putting the front back as I am changing the bulbs to blue LED's.
Then to the DR7 will check through again, thanks for the tip on checking the segments, will do that tomorrow.
If those LED's have a problem I will check out DF4NW to see if I can get a replacement.
Hoping it's just a solder joint.
Kind Regards
Mike
G3ZCC
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Re: DRAKE TECHNICAL NET UPDATE ( March 21, 2021 )
Tried to check in but band wasn't cooperating in SC. W4BRX
On Sun, Mar 21, 2021, 4:53 PM M Gilger < wb0iqk@...> wrote: The Drake tech net today had 16 check-ins under very poor band conditions.?
We had the following mix of Drake radio's.
TR-4(X) = 4 TR-5 = 3 TR-7 = 3 C TWINS = 2
73'S, Mark, WB0IQK
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Mike Davidsohn G3ZCC
Jim Shorney
Ryan Scott
