[drakelist] wanted 4 khz am filter and operating manual for tr7a

[n4xce]

Wanted 4 KHZ AM filter, 1.8 khz narrow SSB filter and operating manual for the 
Drake TR7A transceiver .Contact David N4XCE at 1-251-478-8823 or [EMAIL 
PROTECTED] 

Re: [drakelist] WTB Solid tube solid state tubes for B and C line

[w1id]

Sartori was a consulting engineer at Texas Instruments when he wrote the 
article. In those days it was possible to have a semiconductor company 
manufacture custom devices on a small lot or sample basis. Therefore, he had 
access to a gold mine of resources few others had. However, custom devices were 
generally derived from an existing devices with some specifications 
differences. At some point in time, Sartori left TI and pursued other venues. I 
haven't looked at specific devices but it seem that with advances in component 
technology, it might be possible to improve or replace the original circuits. 
It would be a race against time however as the whole semiconductor industry is 
going to strictly surface mount devices in ever smaller packages. Thre could be 
even more opportunities as the package sizes change but the question is would 
an average Ham be able to handle it?

-- Original message -- 
From: "Jim Pruitt" <[EMAIL PROTECTED]> 

> 
> "Jim Pruitt" made an utterance to the drakelist gang 
> -- 
> Hello Neil. 
> 
> First, there was an article by SARTORI (the guy that later produced the 
> solid tubes commercially) in a 197x (1975 or 6 I think) QST article and was 
> written specifically for making solid state tubes for the Drake B and C 
> line. I looked very hard at it at the time. I had a friend that was an 
> executive for Tektronix. He pointed out to me that the specific transistors 
> were not that hard to find but that Sartori had spec'ed the hard to find 
> cases (TO220) for the transistors he used. I was recently told that Sartori 
> did that because he worked in the industry and got the transistor maker to 
> make them special for him so most people (including me) would have a hard 
> time finding them in the cases he recommended in the article. I recently 
> ran across a mod on some site (I thought it was WB4HFN but maybe not) where 
> the article took the 6EV7 vox tube (for the T4XB) (found it-- 
> http://www.geocities.com/maxmartin3/drake/tr4xc.html ) 
> which used simple 2N5485 and MPSA42 along with a string of 4 43v transcient 
> voltage suppressor diodes, a 12v zener and a 1N4007. My T4XB used to and 
> still eats that particular tube. 
> 
> The regulator tube for the T4 was even simpler but used a 150v (I think) 
> zener diode but those are getting hard to find now but they are out there. 
> 
> Anyway, there have been articles about making solid state replacements for 
> tubes. The one in QST that I mentioned above and I also remember an article 
> in Ham Radio Magazine that did the same thing but aimed at the R390 or KWM2 
> (can not remember which but a Collins radio). Those transistors were even 
> harder (for me) to find. I think the article was in the early 80's. 
> 
> I purchased some blue LED builbs in #47 and #53 style holders from www. 
> superbrightleds.com ( http://www.superbrightleds.com/BA9S6_specs.htm ) in 
> their BA9 and BA7 models. The price was not bad. I think around $3 per 
> bulb but do not remember for sure. 
> 
> One of the individuals ( N9OO )on this list sells a blue LED light bar for 
> the TR7 at http://home.wi.rr.com/n9oo/products/tr7lamp/d7lamp.html . 
> 
> The filter material is not hard to get WA9TGT sells them ( 
> http://www.wa9tgt.com/Dial_Filter_Page.html ) and are quite cheap ($10 for 4 
> sets) so if you do not have a local source these guys can sure help you out. 
> 
> I have not found a source for solid tubes or the parts to make them, at 
> least not on a reliable scale. 
> 
> Thank you. 
> 
> Jim Pruitt 
> 
> - Original Message - 
> From: "neil" 
> To: "DrakeList" 
> Sent: Sunday, November 26, 2006 1:45 PM 
> Subject: Re: [drakelist] WTB Solid tube solid state tubes for B and C line 
> 
> 
> > 
> > neil made an utterance to the drakelist gang 
> > -- 
> > Jim Pruitt wrote: 
> > > 
> > > "Jim Pruitt" made an utterance to the drakelist 
> gang 
> > > -- 
> > > I am again trying to find some solid tubes. I have seen none advertised 
> on 
> > > here for quite some time and wonder if anyone has any lying around that 
> they 
> > > would like to part with for the B or C line. 
> > 
> > Speaking of which... I've wondered how hard it would be to make some 
> > things like this (assuming, for discussion, that you could get some 
> > appropriate 7 or 9 pin bases to build on)? 
> > 
> > Diodes are obvious, and I suppose an FET could be rigged to work as a 
> > triode, but how would you replace a more complex (multi-grid) tube? 
> > Dual-gate mosfet or some combination of parts? 
> > 
> > Also - anyone tried using bright blue LEDs instead of bulbs + blue 
> > filters for the dial and meter illumination? My filters are shot... 
> > 
> > Neil 
> > KX2Y 
> 
> ---

Re: [drakelist] PS for TR-3

[Grif]

"Grif" <[EMAIL PROTECTED]> made an utterance to the drakelist gang
--
See item 250053833464 on e-place. Note the absence of red velvet background.
Description sounds about the same, however.

Grif, KF4JG

- Original Message - 
From: "Floyd Sense" <[EMAIL PROTECTED]>
To: "Jim Shorney" <[EMAIL PROTECTED]>; 
Sent: Monday, November 27, 2006 8:51 AM
Subject: Re: [drakelist] PS for TR-3


>
> Floyd Sense <[EMAIL PROTECTED]> made an utterance to the drakelist gang
> --
> Jim Shorney wrote:
> > "Jim Shorney" <[EMAIL PROTECTED]> made an utterance to the
drakelist gang
> > --
> > On Mon, 27 Nov 2006 12:34:22 +1030, Frank Woolfe wrote:
> >
> >> I purchased my R4C & T4XC off this guy
> >
> >
> > Here's some interesting reading:
> >
> >
http://www.toolhaus.org/cgi-bin/negs?User=radio-mart&Dirn=Received+by&Many=ON
> >
> >
> >
> >
> >
>
> A very useful link.  If you replace the "radio-mart" with any eBay ID,
> you'll get just their neutral and negative feedbacks.  If not very
> experienced with eBay, the only thing that matters is the negatives -
> ignore the positives.  Look for common threads and repetitive
> complaints.  In this case, 97.5% positive sounds not so bad, until you
> realize that 118 people were shafted and chances are that they not only
> got screwed in the deal, but got their own negative feedback from
> radio-mart as well.
>
> 73, K8AC


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Re: [drakelist] PS for TR-3

[DW Holtmnan]

DW Holtmnan <[EMAIL PROTECTED]> made an utterance to the drakelist gang
--
Hello,

I can guarantee you that if many buyers were not afraid of negative 
feedback (retaliation) from Radio-Mart, he would have many, many more 
negative feedbacks. The guy is a creep and should be banned. I have his 
buying arm, gottlhaveit1995  on my do not sell to list.


Best,
DW Holtman
WB7SSN


Floyd Sense wrote:


Floyd Sense <[EMAIL PROTECTED]> made an utterance to the drakelist 
gang

--
Jim Shorney wrote:
"Jim Shorney" <[EMAIL PROTECTED]> made an utterance to the 
drakelist gang

--
On Mon, 27 Nov 2006 12:34:22 +1030, Frank Woolfe wrote:


I purchased my R4C & T4XC off this guy



Here's some interesting reading:

http://www.toolhaus.org/cgi-bin/negs?User=radio-mart&Dirn=Received+by&Many=ON 









A very useful link.  If you replace the "radio-mart" with any eBay ID, 
you'll get just their neutral and negative feedbacks.  If not very 
experienced with eBay, the only thing that matters is the negatives - 
ignore the positives.  Look for common threads and repetitive 
complaints.  In this case, 97.5% positive sounds not so bad, until you 
realize that 118 people were shafted and chances are that they not 
only got screwed in the deal, but got their own negative feedback from 
radio-mart as well.


73, K8AC
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Re: [drakelist] PS for TR-3

[Dan Ringer]

"Dan Ringer" <[EMAIL PROTECTED]> made an utterance to the drakelist gang
--
On 27 Nov 2006 at 16:56, Jim Shorney wrote:

> 
> "Jim Shorney" <[EMAIL PROTECTED]> made an utterance to the drakelist gang
> --
> On Mon, 27 Nov 2006 08:51:53 -0500, Floyd Sense wrote:
> 
> >A very useful link.  If you replace the "radio-mart" with any eBay ID, 
> >you'll get just their neutral and negative feedbacks. 
> 
> Or just enter another user ID in the "Enter an eBay user ID:" box.  Here's
> the link to the start page:
> 
> http://www.toolhaus.org/cgi-bin/negs
> 
> 73
> 
> -Jim

Actually, if you use Firefox, this is a "plugin."  Install it, then right-click 
on any eBay user name 
to get a list of neutral and negative feedback.

Don't use eBay without it. . . . Really!!

Dan, K8WV
 
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Re: [drakelist] WTB Solid tube solid state tubes for B and C line

[kbgluxford]

kbgluxford <[EMAIL PROTECTED]> made an utterance to the drakelist gang
--
Neil,
I have used bright blue LEDs in my R4A.  I took out the white reflector 
and re sprayed it white.  I then shone the blue LEDs (two of them) into 
the quasi parabolic diffuser.  Suited me.


73
Kevin
VK3DAP / ZL2DAP

neil wrote:

neil <[EMAIL PROTECTED]> made an utterance to the drakelist gang
--
Jim Pruitt wrote:

"Jim Pruitt" <[EMAIL PROTECTED]> made an utterance to the drakelist gang
--
I am again trying to find some solid tubes.  I have seen none advertised on
here for quite some time and wonder if anyone has any lying around that they
would like to part with for the B or C line.


Speaking of which... I've wondered how hard it would be to make some
things like this (assuming, for discussion, that you could get some
appropriate 7 or 9 pin bases to build on)?

Diodes are obvious, and I suppose an FET could be rigged to work as a
triode, but how would you replace a more complex (multi-grid) tube?
Dual-gate mosfet or some combination of parts? 


Also - anyone tried using bright blue LEDs instead of bulbs + blue
filters for the dial and meter illumination? My filters are shot...

Neil
KX2Y
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[drakelist] For Sale: Original Drake 4-Line w/orig boxes,manuals

[Duane Calvin]

I have an original Drake 4-Line for sale.  It is in good operating condition
overall with one exception.  The R-4 is getting weak on the higher bands,
but the lower bands are good.  Both are cosmetically good condition - the
front panels are very clean but the R-4 has some spotting along the right
edge, and the T-4's frequency dial has darkened considerably centering on
the 250 KHz mark (dark amber from 175 - 325 and lighter amber for 25 KHz
each side of that.)  The T-4 operates fine and puts out good power (100w+).
I can forward photos to interested parties.  Set includes R-4, T-4, MS-4 and
AC-3.  All have the original boxes, and these would be double packed (inside
overpack boxes) for shipment to you.  I've used this station occasionally,
like for SKN's and enjoyed it very much.  

$325 + I'll split shipping/packing with you.  

 

 

73, Duane  (offering here before going to the bay . . . )

 

 

Duane Calvin, AC5AA

Austin, Texas 

www.ac5aa.com  

 

Re: [drakelist] WTB Solid tube solid state tubes for B and C line

[neil]

neil <[EMAIL PROTECTED]> made an utterance to the drakelist gang
--
Jim Pruitt wrote:
> 
> "Jim Pruitt" <[EMAIL PROTECTED]> made an utterance to the drakelist gang
> --
> I am again trying to find some solid tubes.  I have seen none advertised on
> here for quite some time and wonder if anyone has any lying around that they
> would like to part with for the B or C line.

Speaking of which... I've wondered how hard it would be to make some
things like this (assuming, for discussion, that you could get some
appropriate 7 or 9 pin bases to build on)?

Diodes are obvious, and I suppose an FET could be rigged to work as a
triode, but how would you replace a more complex (multi-grid) tube?
Dual-gate mosfet or some combination of parts? 

Also - anyone tried using bright blue LEDs instead of bulbs + blue
filters for the dial and meter illumination? My filters are shot...

Neil
KX2Y
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Re: [drakelist] WTB Solid tube solid state tubes for B and C line

[EL34GUY]

This is my own opinion >> I always heard the solid tubes(at the time)  were a 
compromise. I had heard they got pretty hot and at the time didn't offer  any 
advantages over the tubes they replaced. Today, some of the 3rd mixer stuff  
is better replaced with Sherwood mods actually.
 
I also heard they didn't sometimes work in the circuit as well as the  
original tube.
 
This is all hearsay, since I have no experience with them. I think they  were 
pretty rare too. Plus that was 30 yrs ago so there may be a lot of better  
ways to improve the circuits now. 
 
73
 
Mark
W0NCL

Re: [drakelist] PS for TR-3

[Frank Woolfe]

I purchased my R4C & T4XC off this guy, when it arrived;

1, the R4C didnt work, 
2, case was also badly dented,
3, was supposed to be "Loaded"
3, upon inspection I found it had been dropped that hard that the power 
transformer was on that much of an angle (about 25 Deg's) that it jarred the 
3rd mixer (6EJ7) out of place and could not be re-inserted into it's socket 
without first straightening the Transformer, No extra filters, this was a "Mint 
collecters condition from my own personal collection" description.

Just as well I live in Australia otherwise I would've knocked on this Guy's 
front door with a crowbar, no effort was made for refund due to damage only neg 
feed back to me.

The thing I just cant fathom is really there isnt that much good DRAKE equip on 
epay, so where does he get it from??

He has another L75 (S/n344) this one's rare and unused!!! also L4B (S/n 6122) 
mint and unused, as well as a myriad or other "mint, near new, collectors 
condition, close to new, from estate, new tubes,  rare find, best i've ever 
seen, close to mint, from my personal collection", listed this week, it 
would be interesting to log S/n's and see how many appear again I'm sure there 
would be one or two.

73's
Frank VK5MFW

- Original Message - 
  From: Ted Wright 
  To: Paul 
  Cc: Chuck Wyatt ; 'Gerry' ; drakelist@www.zerobeat.net 
  Sent: Sunday, November 26, 2006 11:34 PM
  Subject: Re: [drakelist] PS for TR-3


  Yes all should be very Weary of Radio-Mart E-Bays BIGGEST SHILL BIDDER AND 
CROOK,For years he denied being GOTTAHAVEIT1995 that is the buying arm  then 
Radio-Mart gets out the can of endust or pledge and viola instant brand new 
finest kind  part of my personal collection.etc etc. That Brit is a lying piece 
of S**T 
  Paul wrote:

The "Red Velvet" store resells what hisbuying arm (gottahave something or 
other name) snipes and wins. This guy is BAD news..the R4B listed as "MINT"  
and "STUNNING"  what a laugh!! obviously seller has a sight problem...I hope 
the winner knows what he's getting. 

I would guess he has someone bid the auctions up for him,because he relists 
a lot of radios (ones that apparently didn't sell for as much as he paid for 
them.)

Good Epay seller to stay away from.

73  Paul
  - Original Message - 
  From: Chuck Wyatt 
  To: 'Gerry' ; drakelist@www.zerobeat.net 
  Sent: Saturday, November 25, 2006 8:21 PM
  Subject: RE: [drakelist] PS for TR-3


  That's one gnarly looking R-4.  L



  I wonder how keeping the user id's of bidders private helps his cause?  
Keeps a class action hard to do?



  -Chuck




--

  From: Gerry [mailto:[EMAIL PROTECTED] 
  Sent: Saturday, November 25, 2006 7:53 PM
  To: 'Chuck Wyatt'; drakelist@www.zerobeat.net
  Subject: RE: [drakelist] PS for TR-3



  I'm getting a little tired of that red velvet background myself but on 
the other hand, it makes it easier to ignore those listings. Check out ebay 
item 250050808246. This is an R-4B in supposedly "collector's condition". 
However, the small knobs are not original, there is paint missing on the 
cabinet, and evidence of corrosion near the extra crystal sockets in the back. 
But the piece de resistance is the missing fuse cover. I wonder if this thing 
works at all? Let the buyer beware. The fool who wins this auction deserves 
what he/she gets.



  -Original Message-
  From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Chuck Wyatt
  Sent: Saturday, November 25, 2006 11:35 AM
  To: drakelist@www.zerobeat.net
  Subject: [drakelist] PS for TR-3



  Hi Drake folks,



  I recently purchased a TR-3, but needs a power supply.  Will either AC-4 
or AC-3 work ok?  How much should I expect to shell out?  Trying to avoid the 
eBay radiomart guy, but he seems to have the market cornered.



  Thanks & 73,



  Chuck

  W1CEW





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11/25/2006 10:55 AM

[drakelist] Drake Items For Sale

[jensdad]

I have for sale the following Drake items:
DC4 power supply WITH cable.$100 plus shipping
MS4/AC4 supply$175 plus shipping
Brand New Drake TR4CW manual$40 plus shipping

Thank youStuW2AO
[EMAIL PROTECTED]

[drakelist] PS for TR-3

[Chuck Wyatt]

Hi Drake folks,

 

I recently purchased a TR-3, but needs a power supply.  Will either AC-4 or
AC-3 work ok?  How much should I expect to shell out?  Trying to avoid the
eBay radiomart guy, but he seems to have the market cornered.

 

Thanks & 73,

 

Chuck

W1CEW

 

Re: [drakelist] PS for TR-3

[crawfish]

The AC-3 was made for it, but quite sure the AC-4 will work. One was just 
listed on here.
 Joe W4AAB
  - Original Message - 
  From: Chuck Wyatt 
  To: drakelist@www.zerobeat.net 
  Sent: Saturday, November 25, 2006 10:34 AM
  Subject: [drakelist] PS for TR-3


  Hi Drake folks,

   

  I recently purchased a TR-3, but needs a power supply.  Will either AC-4 or 
AC-3 work ok?  How much should I expect to shell out?  Trying to avoid the eBay 
radiomart guy, but he seems to have the market cornered.

   

  Thanks & 73,

   

  Chuck

  W1CEW

   

Re: [drakelist] WTB Solid tube solid state tubes for B and C line

[Jim Pruitt]

"Jim Pruitt" <[EMAIL PROTECTED]> made an utterance to the drakelist gang
--
Hello Neil.

First,  there was an article by SARTORI (the guy that later produced the
solid tubes commercially) in a 197x (1975 or 6 I think) QST article and was
written specifically for making solid  state tubes for the Drake B and C
line.  I looked very hard at it at the time.  I had a friend that was an
executive for Tektronix.  He pointed out to me that the specific transistors
were not that hard to find but that Sartori had spec'ed the hard to find
cases (TO220) for the transistors he used.  I was recently told that Sartori
did that because he worked in the industry and got the transistor maker to
make them special for him so most people (including me) would have a hard
time finding them in the cases he recommended in the article.  I recently
ran across a mod on some site (I thought it was WB4HFN but maybe not) where
the article took the 6EV7 vox tube (for the T4XB) (found it-- 
http://www.geocities.com/maxmartin3/drake/tr4xc.html  )
which used simple 2N5485 and MPSA42 along with a string of 4 43v transcient
voltage suppressor diodes, a 12v zener and a 1N4007.  My T4XB used to and
still eats that particular tube.

The regulator tube for the T4 was even simpler but used a 150v (I think)
zener diode but those are getting hard to find now but they are out there.

Anyway,  there have been articles about making solid state replacements for
tubes.  The one in QST that I mentioned above and I also remember an article
in Ham Radio Magazine that did the same thing but aimed at the R390 or KWM2
(can not remember which but a Collins radio).  Those transistors were even
harder (for me) to find.  I think the article was in the early 80's.

I purchased some blue LED builbs in #47 and #53 style holders from www.
superbrightleds.com (  http://www.superbrightleds.com/BA9S6_specs.htm ) in
their BA9 and BA7 models.  The price was not bad.  I think around $3 per
bulb but do not remember for sure.

One of the individuals ( N9OO )on this list sells a blue LED light bar for
the TR7 at http://home.wi.rr.com/n9oo/products/tr7lamp/d7lamp.html .

The filter material is not hard to get WA9TGT sells them  (
http://www.wa9tgt.com/Dial_Filter_Page.html ) and are quite cheap ($10 for 4
sets) so if you do not have a local source these guys can sure help you out.

I have not found a source for solid tubes or the parts to make them, at
least not on a reliable scale.

Thank you.

Jim Pruitt

- Original Message - 
From: "neil" <[EMAIL PROTECTED]>
To: "DrakeList" 
Sent: Sunday, November 26, 2006 1:45 PM
Subject: Re: [drakelist] WTB Solid tube solid state tubes for B and C line


>
> neil <[EMAIL PROTECTED]> made an utterance to the drakelist gang
> --
> Jim Pruitt wrote:
> >
> > "Jim Pruitt" <[EMAIL PROTECTED]> made an utterance to the drakelist
gang
> > --
> > I am again trying to find some solid tubes.  I have seen none advertised
on
> > here for quite some time and wonder if anyone has any lying around that
they
> > would like to part with for the B or C line.
>
> Speaking of which... I've wondered how hard it would be to make some
> things like this (assuming, for discussion, that you could get some
> appropriate 7 or 9 pin bases to build on)?
>
> Diodes are obvious, and I suppose an FET could be rigged to work as a
> triode, but how would you replace a more complex (multi-grid) tube?
> Dual-gate mosfet or some combination of parts?
>
> Also - anyone tried using bright blue LEDs instead of bulbs + blue
> filters for the dial and meter illumination? My filters are shot...
>
> Neil
> KX2Y

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Re: [drakelist] PS for TR-3

[Jim Shorney]

"Jim Shorney" <[EMAIL PROTECTED]> made an utterance to the drakelist gang
--
On Mon, 27 Nov 2006 12:34:22 +1030, Frank Woolfe wrote:

>I purchased my R4C & T4XC off this guy


Here's some interesting reading:

http://www.toolhaus.org/cgi-bin/negs?User=radio-mart&Dirn=Received+by&Many=ON





-- 
Jim Shorney  -->.<--Put complaints in this box
jshorney (at) inebraska.com
Ham Radio NU0C
Lincoln, NE, USA
EN10ps
http://incolor.inetnebr.com/jshorney/

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Re: [drakelist] WTB Solid tube solid state tubes for B and C line

[Jim Shorney]

"Jim Shorney" <[EMAIL PROTECTED]> made an utterance to the drakelist gang
--
On Sun, 26 Nov 2006 16:45:52 -0500, neil wrote:

>Also - anyone tried using bright blue LEDs instead of bulbs + blue
>filters for the dial and meter illumination? My filters are shot...

Yes.  You should be able to find comments in the list archives by 
myself and others regarding blue LEDs.  See also here:

http://www.146760.net/cgi-bin/pro/emalbum.cgi?c=show_thumbs;p=Field%20Day/2006%20-%20Photos%20by%20NU0C;i=16;pg=2

(long URL, watch for line wrap).

The first all-blue TR7 - meter & dial lamps, digital display, ALC 
and RV7 LEDs have all been replaced with blue LEDs.

The coloe is more "blue" than the blue-aqua color of standard lamps,
and is quite striking.


--
TR7/RV7, TR6/RV6, T4XC/R4C, L4B, NCL2000, SB104A, R390A, GT550A/RV550A - all 
vintage, all the time!


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Re: [drakelist] PS for TR-3

[Ted Wright]

Yes all should be very Weary of Radio-Mart E-Bays BIGGEST SHILL BIDDER 
AND CROOK,For years he denied being GOTTAHAVEIT1995 that is the buying 
arm  then Radio-Mart gets out the can of endust or pledge and viola 
instant brand new finest kind  part of my personal collection.etc etc. 
That Brit is a lying piece of S**T

Paul wrote:

The "Red Velvet" store resells what hisbuying arm (gottahave something 
or other name) snipes and wins. This guy is BAD news..the R4B listed 
as "MINT"  and "STUNNING"  what a laugh!! obviously seller has a sight 
problem...I hope the winner knows what he's getting.
 
I would guess he has someone bid the auctions up for him,because he 
relists a lot of radios (ones that apparently didn't sell for as much 
as he paid for them.)
 
Good Epay seller to stay away from.
 
73  Paul


- Original Message -
From: Chuck Wyatt 
To: 'Gerry'  ; drakelist@www.zerobeat.net

Sent: Saturday, November 25, 2006 8:21 PM
Subject: RE: [drakelist] PS for TR-3

That's one gnarly looking R-4.  L

 


I wonder how keeping the user id's of bidders private helps his
cause?  Keeps a class action hard to do?

 


-Chuck

 




From: Gerry [mailto:[EMAIL PROTECTED]
Sent: Saturday, November 25, 2006 7:53 PM
To: 'Chuck Wyatt'; drakelist@www.zerobeat.net

Subject: RE: [drakelist] PS for TR-3

 


I'm getting a little tired of that red velvet background myself
but on the other hand, it makes it easier to ignore those
listings. Check out ebay item 250050808246. This is an R-4B in
supposedly "collector's condition". However, the small knobs are
not original, there is paint missing on the cabinet, and evidence
of corrosion near the extra crystal sockets in the back. But the
piece de resistance is the missing fuse cover. I wonder if this
thing works at all? Let the buyer beware. The fool who wins this
auction deserves what he/she gets.

 


-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Chuck Wyatt
Sent: Saturday, November 25, 2006 11:35 AM
To: drakelist@www.zerobeat.net
Subject: [drakelist] PS for TR-3

 


Hi Drake folks,

 


I recently purchased a TR-3, but needs a power supply.  Will
either AC-4 or AC-3 work ok?  How much should I expect to shell
out?  Trying to avoid the eBay radiomart guy, but he seems to have
the market cornered.

 


Thanks & 73,

 


Chuck

W1CEW

 



No virus found in this incoming message.
Checked by AVG Free Edition.
Version: 7.5.430 / Virus Database: 268.14.16/551 - Release Date:
11/25/2006 10:55 AM

[drakelist] L4B

[Richard Joey Fiero II W5TFW]

My 2 cents.

 I have an l4b and I just refused to hook it up on 120vac   so it sat here for 
4 months till I got time to get a 220 Line (12 gauge ) run I am happy now.



Richard Joey Fiero II
W5TFW  EM-40
QSL Manager USS KIDD W5KID
  

RE: [drakelist] PS for TR-3

[Gerry]

I'm getting a little tired of that red velvet background myself but on the
other hand, it makes it easier to ignore those listings. Check out ebay item
250050808246. This is an R-4B in supposedly "collector's condition".
However, the small knobs are not original, there is paint missing on the
cabinet, and evidence of corrosion near the extra crystal sockets in the
back. But the piece de resistance is the missing fuse cover. I wonder if
this thing works at all? Let the buyer beware. The fool who wins this
auction deserves what he/she gets.

 

-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Chuck Wyatt
Sent: Saturday, November 25, 2006 11:35 AM
To: drakelist@www.zerobeat.net
Subject: [drakelist] PS for TR-3

 

Hi Drake folks,

 

I recently purchased a TR-3, but needs a power supply.  Will either AC-4 or
AC-3 work ok?  How much should I expect to shell out?  Trying to avoid the
eBay radiomart guy, but he seems to have the market cornered.

 

Thanks & 73,

 

Chuck

W1CEW

 

[drakelist] WTB Solid tube solid state tubes for B and C line

[Jim Pruitt]

"Jim Pruitt" <[EMAIL PROTECTED]> made an utterance to the drakelist gang
--
I am again trying to find some solid tubes.  I have seen none advertised on
here for quite some time and wonder if anyone has any lying around that they
would like to part with for the B or C line.

Thank you.

Jim Pruitt

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[drakelist] for Lee Craner, WB6SSW, only.

[VE3AX]

"VE3AX" <[EMAIL PROTECTED]> made an utterance to the drakelist gang
--
Lee:

Please contact me regarding the Drake item you are looking for.

73

Peter
VE3AX

[EMAIL PROTECTED]
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Re: [drakelist] PS for TR-3

[Paul]

The "Red Velvet" store resells what hisbuying arm (gottahave something or other 
name) snipes and wins. This guy is BAD news..the R4B listed as "MINT"  and 
"STUNNING"  what a laugh!! obviously seller has a sight problem...I hope the 
winner knows what he's getting. 

I would guess he has someone bid the auctions up for him,because he relists a 
lot of radios (ones that apparently didn't sell for as much as he paid for 
them.)

Good Epay seller to stay away from.

73  Paul
  - Original Message - 
  From: Chuck Wyatt 
  To: 'Gerry' ; drakelist@www.zerobeat.net 
  Sent: Saturday, November 25, 2006 8:21 PM
  Subject: RE: [drakelist] PS for TR-3


  That's one gnarly looking R-4.  L

   

  I wonder how keeping the user id's of bidders private helps his cause?  Keeps 
a class action hard to do?

   

  -Chuck

   


--

  From: Gerry [mailto:[EMAIL PROTECTED] 
  Sent: Saturday, November 25, 2006 7:53 PM
  To: 'Chuck Wyatt'; drakelist@www.zerobeat.net
  Subject: RE: [drakelist] PS for TR-3

   

  I'm getting a little tired of that red velvet background myself but on the 
other hand, it makes it easier to ignore those listings. Check out ebay item 
250050808246. This is an R-4B in supposedly "collector's condition". However, 
the small knobs are not original, there is paint missing on the cabinet, and 
evidence of corrosion near the extra crystal sockets in the back. But the piece 
de resistance is the missing fuse cover. I wonder if this thing works at all? 
Let the buyer beware. The fool who wins this auction deserves what he/she gets.

   

  -Original Message-
  From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Chuck Wyatt
  Sent: Saturday, November 25, 2006 11:35 AM
  To: drakelist@www.zerobeat.net
  Subject: [drakelist] PS for TR-3

   

  Hi Drake folks,

   

  I recently purchased a TR-3, but needs a power supply.  Will either AC-4 or 
AC-3 work ok?  How much should I expect to shell out?  Trying to avoid the eBay 
radiomart guy, but he seems to have the market cornered.

   

  Thanks & 73,

   

  Chuck

  W1CEW

   



--


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  Checked by AVG Free Edition.
  Version: 7.5.430 / Virus Database: 268.14.16/551 - Release Date: 11/25/2006 
10:55 AM

Re: [drakelist] PS for TR-3

[Floyd Sense]

Floyd Sense <[EMAIL PROTECTED]> made an utterance to the drakelist gang
--
Jim Shorney wrote:

"Jim Shorney" <[EMAIL PROTECTED]> made an utterance to the drakelist gang
--
On Mon, 27 Nov 2006 12:34:22 +1030, Frank Woolfe wrote:


I purchased my R4C & T4XC off this guy



Here's some interesting reading:

http://www.toolhaus.org/cgi-bin/negs?User=radio-mart&Dirn=Received+by&Many=ON







A very useful link.  If you replace the "radio-mart" with any eBay ID, 
you'll get just their neutral and negative feedbacks.  If not very 
experienced with eBay, the only thing that matters is the negatives - 
ignore the positives.  Look for common threads and repetitive 
complaints.  In this case, 97.5% positive sounds not so bad, until you 
realize that 118 people were shafted and chances are that they not only 
got screwed in the deal, but got their own negative feedback from 
radio-mart as well.


73, K8AC
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RE: [drakelist] Bad tubes in L4B

[Rodger Singley]

Joe and Drakelist,

 

You definitely should not be driving the grid current to excessive levels as
this can easily damage the tube.  A couple of thoughts:

 

1.  The L4B was designed and sold when the legal limit was 1000 watts
input for CW and 2000 peak input for SSB.  At a true 1000 watts input, the
actual output should be around 550-700 watts on CW depending upon the
frequency; the typical efficiency for a class B grounded grid linear
amplifier is around 60-65% and there will be some additional loss in the pi
output circuit-especially as the operating frequency increases..  However,
even fairly expensive watt meters are generally specified at around +/- 5%
of full scale accuracy which would be +/- 100 watts on a 2000 watt scale.
Typical watt meters like the Drake 4 series and Heathkit meters are
generally +/-200 watt accuracy on the 2000 watt range so don't depend too
much on your watt meter unless it is a recently calibrated Bird unit or a
well calibrated RF voltmeter or scope used with a good 50 ohm load.  I would
be very cautious about any continuous carrier testing at above 1000 watts DC
input.

 

2.  Is your loading control adjusted properly?  Generally, the proper
operating conditions will be reached with a fairly heavy setting of the
loading control and a lightly loaded amplifier will have excessive grid
current and poor linearity.  For a dual 3-500Z amplifier at 1000 watts
input, you should use around 40-60 watts drive maximum to reach the rated
1000 watt input with proper operating conditions.  I wouldn't try to drive
the L4B to the current legal limit as you are operating in past its design
limits and you are not gaining any significant increase in received signal
strength; going from 1000 to 1500 watts output is less than 2 db and the
typical s meter is 6 db per unit so the receiving operator wouldn't even be
able to tell the difference.  If you increase the loading too far past the
optimal point, efficiency will suffer.

 

3.  Do you have the AGC line hooked up to your T-4XC?  Generally this
will help to prevent excessive grid current as the transmitter drive will be
automatically reduced.

 

It has been a little while since I have used an L4B but I currently have a
Drake L7 and a Heath SB220 which use the same dual 3-500Z setup and the
tuning on these is similar.  I also have a homebrew triple 4CX-800 amplifier
which I built to stand up to contesting and to work as a linear amplifier
follow a high level AM transmitter and the most critical parameter on it is
screen grid current; fortunately not an issue with the L4B and similar
triode amplifiers.  The L4B is a very well built amplifier and will run well
at 1kw DC input on CW and should develop 1200-1300 watts peak output on SSB.
I wouldn't operate CW in the high voltage position as this does put too much
stress on the tubes and power supply.  You might also want to run the power
supply on 240 volts as soon as possible as the voltage regulation will be
better and there will be less chance of flickering or dimming lights in the
rest of your house.

 

Good luck and 73,

Rodger WQ9E

 

 

 

-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Joe Roth
Sent: Friday, November 24, 2006 9:04 AM
To: drakelist@www.zerobeat.net
Subject: [drakelist] Bad tubes in L4B

 

"Joe Roth" made an utterance to the drakelist gang
-- I
suspect I have a week pair of 3-500Z's in my L4B. Tell me if you agree. 

I restored an L4B and rebuilt the power supply. PS voltages check out fine. 
I drive it with a T-4XC at 90 watts. On 40m, RF output is 800w. Plate amps
shows .5. Plate voltage is at 2000 on TX (2500 at rest). 

The grid bothers me as the meter pins past full scale. If I drop the RF
drive to around 45-50 watts, the grid current drops to 300ma. 
The amp is running on 120 VAC for now. 

Thanks for your tips! 
73 
Joe, WC4R 



www.wc4r.com 
www.rothweb.net 
http://members.cox.net/kg4kaw

  _  


Lycos Cinema : Catch up with your friends and see free movies online -
watch, chat & connect now >> http://cinema.lycos.com
  

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Re: [drakelist] PS for TR-3

[Jason Buchanan]

I've used the AC4 and AC3 on TR3, TR4, T-4X*...

check your bias


cul jason

-- 
73 Jason N1SU
http://n1su.com/

  - Original Message - 
  From: Chuck Wyatt 
  To: drakelist@www.zerobeat.net 
  Sent: Saturday, November 25, 2006 11:34
  Subject: [drakelist] PS for TR-3


  Hi Drake folks,

   

  I recently purchased a TR-3, but needs a power supply.  Will either AC-4 or 
AC-3 work ok?  How much should I expect to shell out?  Trying to avoid the eBay 
radiomart guy, but he seems to have the market cornered.

   

  Thanks & 73,

   

  Chuck

  W1CEW

   

Re: [drakelist] PS for TR-3

[Ted Wright]

Chuck Wyatt wrote:


Hi Drake folks,

 

I recently purchased a TR-3, but needs a power supply.  Will either 
AC-4 or AC-3 work ok?  How much should I expect to shell out?  Trying 
to avoid the eBay radiomart guy, but he seems to have the market cornered.


 


Thanks & 73,

 


Chuck

W1CEW

 


Hi Chuck
The AC-3 or AC-4 will work just fine . You should always adjust Idle 
Current or Bias current as it is very simple And ALWAYS AVOID RADIO-MART 
!!
He sold a power supply to a friend of my it was in such bad shape when 
it arrived and add to that the fact that the supply did not work as it 
had high voltage an just about all pins. He does not care about anyone 
but himself and MONEY.. That crook sold me a TR-4 in Nov. 0f 04 it was 
in horrible shape bouncing around in the shipping box would not work on 
forty .. The list is endless ..
Most all other sellers on the Drake Pages of E-Bay are very reputable  
One such seller is Bill & Sue They sell a fair amount of drake equipment..

Good Luck ..
73
ted n3zrx

[drakelist] TR3 For Sale

[Charles Bacon]

I have a TR3 for sale. I'm not sure what the going rate is. I would
appreciate it if some of the guys on the list could email me suggested price
range.
 
Please email me for pics & we can talk price.
 
Chuck Bacon
Boatanchors & Vintage Test Gear Collector

Re: [drakelist] Bad tubes in L4B

[Jason Buchanan]

hi,

you'll probably get a lot of responses but i'll throw my 2 cents in...


1. the L4/L4B does not have an exhaust system that will keep the tubes cool if 
you use something other than SSB on the SSB position.  The plates should show 
some color but if they become orange that is too much.  The amp was never 
designed to push enough air to meet today's 1500W output limits.  

2. never let the grid current go past 300mA

3. 500V is a lot of sag - get some 10 or 12 gauge wire and bring 240V to the 
amp.



My old L4 will produce around 1100W on the original 8163 tubes (Amperex 
graphite 3-400Z, made in 1968) but this is on a 240V circuit fed with #10 gauge 
wire 30 feet from the breaker box.  This output was measured against an LP-100 
digital wattmeter to a dummy load.  New RF Parts tubes will produce maybe 1300 
but the Drake cooling system is not up to the task of handling this kind of 
heat.  Take a look at the photo of my L4: http://n1su.com/tubes/3-400Z-idle.jpg 
- notice the glass chimneys have a fluted top that push the air over the anode 
heat dissipator (they're curved intentionally). If you have Coleman lantern 
glass with straight sides your tubes' anode seals won't get enough air across 
them and are going to be put under a lot of stress... and may either fail or 
the joint inside the tube where the plate meets the anode pin could deform.  
The short answer is "use low voltage mode for everything but SSB" - be sure to 
oil the fan motor bearings once a year.  I use Norvey, Inc turbine lubricating 
oil (never gums up - go to home depot).

3-400Z / 3-500Z tubes are rated at a max of 140mA grid current each.  300mA 
grid current for both tubes is pushing it but full scale is certain death for 
the tubes and if you're not careful you will deform the grid cage inside the 
tube and short the grid to the filaments, which would do even worse damage.  
The grid current increases as the plate voltage decreases - you're having to 
push it very hard.  Perhaps the tubes are weak but I think your lower output 
power is more likely due to running the amp on 120V.  400mA grid current is 
probably splattering all over the band.  You can reduce the grid current by 
rotating the LOAD control clockwise until your power drops around 50-100 watts 
- this will help the linearity and reduce the grid current but the pressure you 
take off the tubes puts pressure on the tuning network.

500V is a lot of sag.  You're probably putting the power supply through some 
hard work...  10-3 or 12-3 romex would be a good choice, 14-3 would not be.  
Bigger is better.  120V ain't cuttin' it.


hope this helps!

-- 
73 Jason N1SU
http://n1su.com/

  - Original Message - 
  From: Joe Roth 
  To: drakelist@www.zerobeat.net 
  Sent: Friday, November 24, 2006 10:04
  Subject: [drakelist] Bad tubes in L4B


  "Joe Roth" made an utterance to the drakelist gang 
-- I 
suspect I have a week pair of 3-500Z's in my L4B. Tell me if you agree. 

  I restored an L4B and rebuilt the power supply. PS voltages check out fine. 
  I drive it with a T-4XC at 90 watts. On 40m, RF output is 800w. Plate amps 
shows .5. Plate voltage is at 2000 on TX (2500 at rest). 

  The grid bothers me as the meter pins past full scale. If I drop the RF drive 
to around 45-50 watts, the grid current drops to 300ma. 
  The amp is running on 120 VAC for now. 

  Thanks for your tips! 
  73 
  Joe, WC4R 



  www.wc4r.com 
  www.rothweb.net 
  http://members.cox.net/kg4kaw


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chat & connect now >> http://cinema.lycos.com 
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[drakelist] L4 B power transformer.

[John King]

John King <[EMAIL PROTECTED]> made an utterance to the drakelist gang
--

I have a Transformer from  a Drake L4B Linear
Amplifier.

I have the Drake L4 B instruction manual and on page
2-5 the terminal strip wiring  for 240 volt operation 
is shown. The trouble is that my L4B transformer
doesn't have a terminal strip. My L4 B transformer has
seven (7) leads coming out of the top of the winding.

I need to identify each of the seven(7) leads. They
are as follow:
 Brown
 Yellow/Black
 Black 
 Blue
 Green
 Yellow/Blue
 Green/Black

Can anyone tell me what winding connects to which
color wire? I am sure that there are two leads per
winding but I can't associate the leads with a
particular winding. I guess I need to know which color
wire went to which terminal eventhough I don't have
the terminal, that way I can tell which windings go
where to wire for 240 volt operation. 
 
Maybe if someone could tell me which wire from the
transformer went to which terminal FROM LEFT TO RIGHT,
I could get it wired safely for 240 volt operation.

Please assist me if you can. 73, John, K5PGW  




 

Cheap talk?
Check out Yahoo! Messenger's low PC-to-Phone call rates.
http://voice.yahoo.com
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Re: [drakelist] PS for TR-3

[Frank Woolfe]

Ah yes the red back ground and everythings mint, well so he says, where does he 
get the stuff from?? 

Did anyone happen to  see the magnificent  L75 he had last week, again it 
looked brand new..

Frank VK5MFW
  - Original Message - 
  From: Gerry 
  To: 'Chuck Wyatt' ; drakelist@www.zerobeat.net 
  Sent: Sunday, November 26, 2006 11:22 AM
  Subject: RE: [drakelist] PS for TR-3


  I'm getting a little tired of that red velvet background myself but on the 
other hand, it makes it easier to ignore those listings. Check out ebay item 
250050808246. This is an R-4B in supposedly "collector's condition". However, 
the small knobs are not original, there is paint missing on the cabinet, and 
evidence of corrosion near the extra crystal sockets in the back. But the piece 
de resistance is the missing fuse cover. I wonder if this thing works at all? 
Let the buyer beware. The fool who wins this auction deserves what he/she gets.



  -Original Message-
  From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Chuck Wyatt
  Sent: Saturday, November 25, 2006 11:35 AM
  To: drakelist@www.zerobeat.net
  Subject: [drakelist] PS for TR-3



  Hi Drake folks,



  I recently purchased a TR-3, but needs a power supply.  Will either AC-4 or 
AC-3 work ok?  How much should I expect to shell out?  Trying to avoid the eBay 
radiomart guy, but he seems to have the market cornered.



  Thanks & 73,



  Chuck

  W1CEW

[drakelist] drake parts

[Tom Stiefel]

Does anyone need a TR-3 tuning knob(s) or top/bottom covers? They are free plus 
actual shipping.
 
-
Everyone is raving about the all-new Yahoo! Mail beta.

[drakelist] Re; Drakelist

[Frank Woolfe]

Frank Woolfe <[EMAIL PROTECTED]>


Gents,

I'm stil trying to find a Plastic C line PTO knob and skirt, can anyone help??

Frank VK5MFW

RE: [drakelist] PS for TR-3

[Chuck Wyatt]

That's one gnarly looking R-4.  :-(

 

I wonder how keeping the user id's of bidders private helps his cause?
Keeps a class action hard to do?

 

-Chuck

 

  _  

From: Gerry [mailto:[EMAIL PROTECTED] 
Sent: Saturday, November 25, 2006 7:53 PM
To: 'Chuck Wyatt'; drakelist@www.zerobeat.net
Subject: RE: [drakelist] PS for TR-3

 

I'm getting a little tired of that red velvet background myself but on the
other hand, it makes it easier to ignore those listings. Check out ebay item
250050808246. This is an R-4B in supposedly "collector's condition".
However, the small knobs are not original, there is paint missing on the
cabinet, and evidence of corrosion near the extra crystal sockets in the
back. But the piece de resistance is the missing fuse cover. I wonder if
this thing works at all? Let the buyer beware. The fool who wins this
auction deserves what he/she gets.

 

-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Chuck Wyatt
Sent: Saturday, November 25, 2006 11:35 AM
To: drakelist@www.zerobeat.net
Subject: [drakelist] PS for TR-3

 

Hi Drake folks,

 

I recently purchased a TR-3, but needs a power supply.  Will either AC-4 or
AC-3 work ok?  How much should I expect to shell out?  Trying to avoid the
eBay radiomart guy, but he seems to have the market cornered.

 

Thanks & 73,

 

Chuck

W1CEW

 

[drakelist] 2B question

[richard radke]

richard radke <[EMAIL PROTECTED]> made an utterance to the drakelist gang
--
Hey Guys,
Anyone have a good "trick" for removing free play in a 2B tuning knob, 
short of re-stringing the dial cordTunes smooth and true, but has 
about 2 hash marks on the skirt of slop..

Rick W9WS
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