[drakelist] L-7 tubes

"" <[EMAIL PROTECTED]> made an utterance to the drakelist gang
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I bought a very early L-7 when they first came out and still have it.  Mine
came with 3-500Z tubes.
Lee
w0vt


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Re: [drakelist] Drakes wanted

[w4awm]

My L-7 came with chimneys and the seller made a big deal about telling me that they were included.  After looking things over, I realized that they were not helping anything due to the fan placement and the heat from the amp dripped appreciably when I removed them. They were almost touching eachother, too.  I am really surprised that I didn't melt the solder out of the pins. Guess he didn't use it much and I didn't either before removing the chimneys.  At least I have a pair of spares in case I get butterfingers when playing with the L-4B.
 
73,
 
John,  W4AWM  -Original Message-From: Ron Baker <[EMAIL PROTECTED]>To: [EMAIL PROTECTED]Cc: drakelist@www.zerobeat.netSent: Wed, 11 Jan 2006 23:03:01 -0500Subject: RE: [drakelist] Drakes wanted



"Ron Baker" <[EMAIL PROTECTED]> made an utterance to the drakelist gang
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Are you sure the L7 had chimney's for the 3-500Z.   I have a later version
which did not have then because the rear mounted fan blew air directly
across the tubes.I Know the L4B had chimneys, but the L7,???

Also, check out my TR7A article.  I have a later release on my website with
lots of updated information.   I'm not sure if the other sites having my
article have the latest version.   Here is the link.
http://www.wb4hfn.com/DRAKE/DrakeArticles/TR7_Comparison_Article/TR7_Idenity
-01.htm

73, Ron / WB4HFN



-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]] On Behalf Of [EMAIL PROTECTED]
Sent: Wednesday, January 11, 2006 9:59 PM
To: [EMAIL PROTECTED]
Cc: drakelist@www.zerobeat.net
Subject: Re: [drakelist] Drakes wanted

Hi Richard,

One thing you need to watch for when purchasing a TR-7A is that it is not
actually a TR-7 in disguise. For a period of time, Drake sold spare face
plates for the A model to anyone who wanted one.  Many folks bought one to
"upgrade" their TR-7.  Other than the face plate, there is no outward
difference in appearence between the 2 models on the front panel.  There is
a small difference on the rear panel and several items were added inside
which were accessories on the A model.  Here is a link to WB4HFNs page in
the Drake museum which will explain all this in detail:   Click here: Page 1
  

Depending on where you get your TR-7A and the physical and electrical
coindition it is in, any additional filters and the PS-7 power supply, You
can xpect to pay anywhere from $800.00 up. Obviously, a rig that is not
pristine will sell for somewhat less, but frankly, a TR-7 is a much better
deal, especually if it has the NB-7 noise blanker installed. That and the AM
filter were the most expensive accessories.

The L-7 is a fine little amplifier, but be sure to get one that has the
original power supply if you can.  The amps were shipped with either 3-400
or 3-500Z tubes.  If you can find one with 3-500, they are the better
choice, but I would not turn down one with 3-400s at a slightly lower price.
If it has been well cared for, the amp is pretty bullet proof, as long as
the finals are in good shape. The original caps in the PS should be replaced
at some point for safety and the fusable resistor power rating should
increased.  A replacement capacitor kit may be available from The Heathkit
Shop. Be sure that the glass chimneys are present.  Here again, condition of
the rig and tubes go a long way in determining the price, but a bottom line
of 800 and up is reasonable.

If you find one and have it shipped, be prepared for sticker shock because
the PS weighs a ton! Have the seller remove the finals and chimneys and
package them separately and do not have them shipped in the same box with
the amp.
The tubes should preferably be shipped in a vertical configuration.

Hope this helps.

73,  

John,  W4AWM

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Re: [drakelist] Drakes wanted

[EL34GUY]

I use to think the L4's had the better tube cooling, but all it is is 
quieter air flow. Not really adequate actually. The L7's dropped the pressurized 
concept and went with the SB220 method. It just blew the air across the naked 
tubes. It might be louder but its simpler and more effective. I have the L4B, 
wouldn't mind having a L7 either. 
 
This has been a good thread. 

RE: [drakelist] Drakes wanted

[Ron Baker]

"Ron Baker" <[EMAIL PROTECTED]> made an utterance to the drakelist gang
--
Are you sure the L7 had chimney's for the 3-500Z.   I have a later version
which did not have then because the rear mounted fan blew air directly
across the tubes.I Know the L4B had chimneys, but the L7,???

Also, check out my TR7A article.  I have a later release on my website with
lots of updated information.   I'm not sure if the other sites having my
article have the latest version.   Here is the link.
http://www.wb4hfn.com/DRAKE/DrakeArticles/TR7_Comparison_Article/TR7_Idenity
-01.htm

73, Ron / WB4HFN



-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED]
Sent: Wednesday, January 11, 2006 9:59 PM
To: [EMAIL PROTECTED]
Cc: drakelist@www.zerobeat.net
Subject: Re: [drakelist] Drakes wanted

Hi Richard,

One thing you need to watch for when purchasing a TR-7A is that it is not
actually a TR-7 in disguise. For a period of time, Drake sold spare face
plates for the A model to anyone who wanted one.  Many folks bought one to
"upgrade" their TR-7.  Other than the face plate, there is no outward
difference in appearence between the 2 models on the front panel.  There is
a small difference on the rear panel and several items were added inside
which were accessories on the A model.  Here is a link to WB4HFNs page in
the Drake museum which will explain all this in detail:   Click here: Page 1
  

Depending on where you get your TR-7A and the physical and electrical
coindition it is in, any additional filters and the PS-7 power supply, You
can xpect to pay anywhere from $800.00 up. Obviously, a rig that is not
pristine will sell for somewhat less, but frankly, a TR-7 is a much better
deal, especually if it has the NB-7 noise blanker installed. That and the AM
filter were the most expensive accessories.

The L-7 is a fine little amplifier, but be sure to get one that has the
original power supply if you can.  The amps were shipped with either 3-400
or 3-500Z tubes.  If you can find one with 3-500, they are the better
choice, but I would not turn down one with 3-400s at a slightly lower price.
If it has been well cared for, the amp is pretty bullet proof, as long as
the finals are in good shape. The original caps in the PS should be replaced
at some point for safety and the fusable resistor power rating should
increased.  A replacement capacitor kit may be available from The Heathkit
Shop. Be sure that the glass chimneys are present.  Here again, condition of
the rig and tubes go a long way in determining the price, but a bottom line
of 800 and up is reasonable.

If you find one and have it shipped, be prepared for sticker shock because
the PS weighs a ton! Have the seller remove the finals and chimneys and
package them separately and do not have them shipped in the same box with
the amp.
The tubes should preferably be shipped in a vertical configuration.

Hope this helps.

73,  

John,  W4AWM

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[drakelist] Drakes wanted

[W4AWM]

Hi Mark,

I got that info right off the description page in my L-7 manual. I wasn't aware of it either until I saw that. Both my L-4M and L-7 came with 3-500Zs, but IA know that the original L-4Bs were shipped with the 400s.

73,  

John

[drakelist] drakelist@www.zerobeat.net

[W4AWM]

[EMAIL PROTECTED] made an utterance to the drakelist gang
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Re: [drakelist] Drakes wanted

[EL34GUY]

This is the first Id heard of the L7 ever coming with 3-400z 
tubes? I knew the L4 did, but thought L4-B's and above were 3-500z? 
 
Mark
W0NCL

Re: [drakelist] Drakes wanted

[W4AWM]

Hi Richard,

One thing you need to watch for when purchasing a TR-7A is that it is not actually a TR-7 in disguise. For a period of time, Drake sold spare face plates for the A model to anyone who wanted one.  Many folks bought one to "upgrade" their TR-7.  Other than the face plate, there is no outward  difference in appearence between the 2 models on the front panel.  There is a small difference on the rear panel and several items were added inside which were accessories on the A model.  Here is a link to WB4HFNs page in the Drake museum which will explain all this in detail:   Click here: Page 1 

Depending on where you get your TR-7A and the physical and electrical coindition it is in, any additional filters and the PS-7 power supply, You can xpect to pay anywhere from $800.00 up. Obviously, a rig that is not pristine will sell for somewhat less, but frankly, a TR-7 is a much better deal, especually if it has the NB-7 noise blanker installed. That and the AM filter were the most expensive accessories.

The L-7 is a fine little amplifier, but be sure to get one that has the original power supply if you can.  The amps were shipped with either 3-400 or 3-500Z tubes.  If you can find one with 3-500, they are the better choice, but I would not turn down one with 3-400s at a slightly lower price. If it has been well cared for, the amp is pretty bullet proof, as long as the finals are in good shape. The original caps in the PS should be replaced at some point for safety and the fusable resistor power rating should increased.  A replacement capacitor kit may be available from The Heathkit Shop. Be sure that the glass chimneys are present.  Here again, condition of the rig and tubes go a long way in determining the price, but a bottom line of 800 and up is reasonable.

If you find one and have it shipped, be prepared for sticker shock because the PS weighs a ton! Have the seller remove the finals and chimneys and package them separately and do not have them shipped in the same box with the amp.
The tubes should preferably be shipped in a vertical configuration.

Hope this helps.

73,  

John,  W4AWM

[drakelist] T-4XB low output

[Keith Hamilton]

Keith Hamilton <[EMAIL PROTECTED]> made an utterance to the drakelist gang
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I have a T-4XB with low output on tune. I have tried to replace the 
finals and the driver tube. Still only about 60 watts. I am wondering if 
it could be the power supply? I am a bit afraid to test it becouse I 
dont know how. Should I be looking at something else first?

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[drakelist] Drakes wanted

[Richard Holder]

Richard Holder <[EMAIL PROTECTED]> made an utterance to the drakelist gang
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I have a friend not on this list whose current wish list includes the 
following:


Drake TR7A

Drake L7

What price range may he expect for these rigs and does anyone have one for 
sale?


Thanks

73

Richard  VE4QK
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