Re: [Drakelist] Restoration vs. Refurbishment

[LOU GIOVANETTI]

 Call HAL at Land Air Communications at landair...@aol.com

Not only can Hal bring back ANY radio to life he has restored my R-4b to 
working specs. BUT WAIT THERE IS MORE! Hal also has a complete stock of 
DRAKE equipment for sale along with most every other brand of radio's.
Give Hal a call you will be amazed of his operation! TRULY AMAZED! If 
Hal don't have it it never existed!


Lou, KB2DHG

On Sun, Dec 26, 2010 at 8:06 PM, Bob Jackson wrote:

 Fellow Drake persons:

I once had, but have lost, information regarding  someone who 
repaired/restored/refurbished Drake equipment. His info made a clear 
distinction  between the services, particularly between the last two. I 
may  be interested in having an SW-4 "restored", not just "refurbished". 
Does anyone here recall that person's name &  information?


73 and HNY to all,

Bob  AG5X

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Re: [Drakelist] Restoration vs. Refurbishment

[Nigel Gunn G8IFF/W8IFF]

He doesn't list any of the RCA AR88 series or derivatives that I've been 
looking for.



! If Hal don't have it it never existed!

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[Drakelist] Drake re-furb/restoration

[Bob Jackson]

Thanks to all that have replied! The fellow I was looking for is indeed Ron 
Baker, WB4HFN. However, Lou, KB2DHG, has also pointed me to Hal, K6DPZ at Land 
Air Communications http://www.landaircom.com/ as another resource. I'd never 
heard of Hal's operation and thought perhaps some other on this listserv would 
like to know about him.

Again, 73 and thanks,

Bob  AG5X___
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[Drakelist] Cooling Fan Orientation

[Diane and Edward Swynar]

Hi Guys,

All this recent chatter on the Reflector about the orientation of cooling 
fans---i.e. to "...force cooling air in, versus to draw hot air 
out"---convinced me that I should re-evaluate the small 12 VDC unit that I'd 
mounted sometime ago atop the enclosure of my Drake T-4X...

Mind you, the area all around the cage shielding the final PA tubes was ALWAYS 
cool, thanks to the presence of the fan...but if the rest of the components 
inside the rig would benefit from a fan that drew air OUT of it, rather than 
forcing air INTO it, so much the better...

Well, to my complete & utter surprise, the colling fan already WAS installed 
such that it would blow AWAY from the 6JB6 tubes, rather than directly at them! 
I was amazed at how very COOL that area of the rig always was since I 
incorporated that fan---proof positive that this style of air "extraction" is, 
indeed, very effective...

"FWIW"...here's hoping everyone had a great "Drake" Christmas...!

~73~ de Eddy VE3CUI - VE3XZ___
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Re: [Drakelist] Cooling Fan Orientation

[Garey Barrell]

Once more, proof that it's not nice to TRY and fool Mother Nature!  (Or 
the laws of physics).


73, Garey - K4OAH
St Charles, IL
Drake Service Supplement CDs for
2-B, 2-C/NT, A, B and C-Line,
TR-4 and TR-4C


Diane and Edward Swynar wrote:

/*Hi Guys,*/
All this recent chatter on the Reflector about the orientation of 
cooling fans---i.e. to ".../force/ cooling air /in/, versus to /draw/ 
hot air /out/"---convinced me that I should re-evaluate the small 12 
VDC unit that I'd mounted sometime ago atop the enclosure of my Drake 
/T-4X/...
Mind you, the area all around the cage shielding the final PA tubes 
was /ALWAYS/ cool, thanks to the presence of the fan...but if the rest 
of the components inside the rig would benefit from a fan that drew 
air /OUT/ of it, rather than forcing air /INTO/ it, so much the better...
Well, to my complete & utter surprise, the colling fan /already/ 
_/WAS/_ installed such that it would blow /AWAY/ from the 6JB6 tubes, 
rather than directly at them! I was amazed at how very /COOL/ that 
area of the rig always was since I incorporated that fan---proof 
positive that this style of air "extraction" is, indeed, /very/ 
effective...

"FWIW"...here's hoping everyone had a great "Drake" Christmas...!
/*~73~ de Eddy VE3CUI - VE3XZ*/


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Re: [Drakelist] Cooling Fan Orientation

[Diane and Edward Swynar]

Hi Garey,

Any way you might put it, the doggone thing WORKS! Hi Hi.

I think it's well worth whatever minor inconvenience it might be to install the 
fan.

Oh yes, one final note: I found that the fan was a tad too noisey & distracting 
"as is", so I put a small voltage dropping resistor in the "+" lead from the 
wall-wart, dropping the voltage to some 9-10 VDC at the fan---and the cooling 
is still effective!

Why not give those precious 6JB6s every advantage for a long & prolific life 
that you can...?!

~73~ de Eddy VE3CUI - VE3XZ





- Original Message - 
From: "Garey Barrell" 
To: "Diane and Edward Swynar" 
Cc: 
Sent: Monday, December 27, 2010 10:48 AM
Subject: Re: [Drakelist] Cooling Fan Orientation


> Once more, proof that it's not nice to TRY and fool Mother Nature!  (Or 
> the laws of physics).
> 
> 73, Garey - K4OAH
> St Charles, IL
> Drake Service Supplement CDs for
> 2-B, 2-C/NT, A, B and C-Line,
> TR-4 and TR-4C
> 
> 
> Diane and Edward Swynar wrote:
> > /*Hi Guys,*/
> > All this recent chatter on the Reflector about the orientation of 
> > cooling fans---i.e. to ".../force/ cooling air /in/, versus to /draw/ 
> > hot air /out/"---convinced me that I should re-evaluate the small 12 
> > VDC unit that I'd mounted sometime ago atop the enclosure of my Drake 
> > /T-4X/...
> > Mind you, the area all around the cage shielding the final PA tubes 
> > was /ALWAYS/ cool, thanks to the presence of the fan...but if the rest 
> > of the components inside the rig would benefit from a fan that drew 
> > air /OUT/ of it, rather than forcing air /INTO/ it, so much the better...
> > Well, to my complete & utter surprise, the colling fan /already/ 
> > _/WAS/_ installed such that it would blow /AWAY/ from the 6JB6 tubes, 
> > rather than directly at them! I was amazed at how very /COOL/ that 
> > area of the rig always was since I incorporated that fan---proof 
> > positive that this style of air "extraction" is, indeed, /very/ 
> > effective...
> > "FWIW"...here's hoping everyone had a great "Drake" Christmas...!
> > /*~73~ de Eddy VE3CUI - VE3XZ*/
> >
> >
> > ___
> > Drakelist mailing list
> > Drakelist@zerobeat.net
> > http://mailman.zerobeat.net/mailman/listinfo/drakelist
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[Drakelist] Need tube num,ber for R-4B

[kc9cdt]

Hi gang..working on a R-4b with 9 tubes...lots of corrosion so I can't 
read some of the tube types. Letering is worn off tube.
Lots of audo distortion and weak output...think it may be the final AF 
amp.

It looks like it might be a 6EH5??

What is the final AF amp tube?
73,
Lee




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Re: [Drakelist] Need tube num,ber for R-4B

[Don Cunningham]

The audio output tube is the 6EH5.  If you are really "working on a R4B", 
you really need at the minimum the manual, which should be downloadable on 
the internet.  Really should have Garey's CD with all the manuals and parts 
locators for the things you WILL run across during the fix.  It pays for 
itself very quickly.  Google k4oah.com and see what I mean!!  No connection, 
other than a friend of Garey's and very satisfied owner of most of his CD's!

73,
Don, WB5HAK 



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Re: [Drakelist] Need tube num,ber for R-4B

[kc9cdt]

Don,
WOW...I forgot I have that CDIt should cover the R-4B as well as 
the C line..Yes?

I'll go find it.
Thnaks
73,
Lee



-Original Message-
From: Don Cunningham 
To: drakelist ; kc9cdt 
Sent: Mon, Dec 27, 2010 3:07 pm
Subject: Re: [Drakelist] Need tube num,ber for R-4B


The audio output tube is the 6EH5.  If you are really "working on a 
R4B",
you really need at the minimum the manual, which should be downloadable 
on
the internet.  Really should have Garey's CD with all the manuals and 
parts
locators for the things you WILL run across during the fix.  It pays 
for
itself very quickly.  Google k4oah.com and see what I mean!!  No 
connection,
other than a friend of Garey's and very satisfied owner of most of his 
CD's!

73,
Don, WB5HAK




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[Drakelist] R-4B with bad audio

[kc9cdt]

Hi gang,
OK, I have a R-4B with kind of distorted audio and you have to turn it 
up almost max to get good listening level.


I don't have a spare tube (V7)
The resistance of PIN 1 to gnd is 150 ohm and the voltage is 7.6 VDC. 
These are out of spec.


What do you think ? is it the tube, or ??

Just thought I would pick your brain before getting in deep.
I have a photo copyed book, but the schematic is pretty poor.

Either way I need to get GArey's CD (I have the C line one)

73,
Lee




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Re: [Drakelist] R-4B with bad audio

[Curt Nixon]

Hi Lee.

If I were a betting guy, I would lay odds on the cathode bypass cap as 
being the culprit.  If I recall, it is one section of the chassis 
mounted can in the R4B.  You can test the fix very easily by just 
paralleling another electrolytic from the cathode to ground and see if 
it improves.  If it does, then remove the bad one from the circuit.


A loss of capacity in that application will do exactly what you are 
seeing.  I think the small difference in the R to ground  is not too big 
an issue in this case.


Curt
KU8L




kc9...@aol.com wrote:

Hi gang,
OK, I have a R-4B with kind of distorted audio and you have to turn it 
up almost max to get good listening level.


I don't have a spare tube (V7)
The resistance of PIN 1 to gnd is 150 ohm and the voltage is 7.6 VDC. 
These are out of spec.


What do you think ? is it the tube, or ??

Just thought I would pick your brain before getting in deep.
I have a photo copyed book, but the schematic is pretty poor.

Either way I need to get GArey's CD (I have the C line one)

73,
Lee




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Re: [Drakelist] Drakelist Digest New Thread

[FJMelick]

Any advise about replacing the existing RCA cables on a  pair of Drake B 
line twins. Can the cables be replaced with a good quality  Audio/Video 
cables? Is the cable length important? Not talking about the  injection cable 
just 
the other 3 cables.
 
Thanks 
 
Fred WD8ADG
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Re: [Drakelist] Drakelist Digest New Thread

[Jim Shorney]

On Mon, 27 Dec 2010 23:13:41 EST, fjmel...@aol.com wrote:

>Any advise about replacing the existing RCA cables on a  pair of Drake B 
>line twins. Can the cables be replaced with a good quality  Audio/Video 
>cables? Is the cable length important? Not talking about the  injection cable 
>just 
>the other 3 cables.

Lots of advice in the archives:

http://www.mail-archive.com/search?q=cables&l=drakelist%40zerobeat.net

73

-Jim


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HyGain 3750, IBM PS/2 - all vintage, all the time!

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