Go Back   WorldwideDX Amateur Radio Forums > Amateur Radio Related > Amplifiers


Amateur Callsign Lookup
Enter Callsign:

Varmint Linear Base Amplifier XL-600, tubes + schematic diagram

Like Tree3Likes

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 06-12-2011, 07:03 PM
Junior Member
iTrader: (0)
 
Join Date: Jun 2011
Posts: 11
August Cassiato ASEE is on a distinguished road
Question Varmint Linear Base Amplifier XL-600, tubes + schematic diagram


Hello all;
Let me start with an introduction as I feel I have finally found home here at WorldwideDX.

My name is August Cassiato Jr. My handle is Astro, call sign KYY1525 based in Gainesville Florida, U.S.A.

My father's was a Signal Corps. 2nd Lieutenant enlisted in the early 40's and was so efficient working with any electronics & with fixing equipment that he didn't even think about it he just looked at something and said there it is and fixed. His call sigh was WA4TSV. I hope some may recall him although; he went to be with our Lord in 1983.

I tell you truly, his shoes where too big for me to fit into.

After a brief stint in the U.S. Army 101st AB, 4th Battalion, Battery E, Fort Sill OK; I came back home to Gainesville with a back injury.

Father was very mad and called a lot of people that eventually lead to my case for a claim of partial disability was denied, shut, and locked.

A few weeks ago a friend knowing the love I have for HF radio electronics & for repairing things (as best I can) gifted me with a Varmint Linear Base Amplifier XL-600.

Its tubes & skit missing (of course, & main point of this thread) I have no idea which tubes it takes but I suspect that two are driver & four are finals since there are six sockets. Two are 9 pin & the other four are 12 pin (even forgot the names of the sockets and tubes tetrode is all that keeps coming to mind and I KNOW that is a four pin tube / socket.)

As I am sure, it is apparent at this point I am lost without a skit or father.

So bad knee & back problems or not I went fishing in a 10 X 30 warehouse for the old test equipment.

Praying the whole time, I dug out the Hitchcock tube tester, tubes, meters.

No sign of the old O scope and signal generator but there as old as this Varmint (the old Techtronicís scope is still missing. I only have one slide out case that has one input and there where others but I think father gave them away.

I would like to find some used equipment to buy after I fix this so let me know of anything people may not want anymore, I can cover shipping.)

So were to turn and do next is the problem dead ends.

As hard as it is to climb (I be having a TKA of my right knee in 10 weeks so this is more then busy work, (Lord Jesus please be with me.))

I got the tube tester out and have been digging for my tube stash, which I thought I had a bunch of the old TV H.V. fly-back, & sweep tubes but only found signal and small amp tubes.

I am not sure but as they astronomically expensive, I will never get this thing to work short of a miracle although I can dream.

I'm flat lost and not too proud to say it.

I believe that 8950's or 6LQ6's are suspect.

What I am sure of is there are two different kinds of tubes required for the Varmint to breathe again!

When I looked up the tubes I thought they were, I had sticker shock!

These are way out of my price range as I am sure everybody not just the disabled people struggle as it is.

Well, they are missing as is the base plate (where I suspect the skit was is at large) it also has two components half way connected. See link to photos at the bottom of this page.

I can clearly see where there are three Electrolytic caps are with one connection broken and a regular cap with one connection in place. Where the other goes is?

Does anybody known where I can find its schematic and what tubes the Varmint Linear Base Amplifier XL-600 can be found or obtained?

PLEASE HELP.

Thank you kindly for reading my life's story. LOL

Astro (KYY1525)

Please see photos at:

Welcome to Windows Live

Thanks to everyone & 73's


Reply With Quote
  #2  
Old 06-12-2011, 07:23 PM
AudioShockwav's Avatar
Extraterrestrial Admin
iTrader: (2)
 
Join Date: Apr 2005
Location: High Sierras Near Yosemite Nat Park
Posts: 5,051
AudioShockwav has disabled reputation
Default

Welcome to the Forum!
One of the members here had a XL 600, user name is 555
Not sure if he still has it.
Also there are a few here that play with some sweep tube amps.
Also, I will move this thread over to the Amplifiers Section and we can see if someone can lend ya a hand.
2 driving 4 sounds right, I will take a shot here and say 2 6kv6A`s driving 4 6LF6`s
There are subs for the 6lf6`s, you can use 6JS6C`s or 6LB6 tubes.
I can not see the pictures, as i do not have an account with windows live, but you can post them here as an attachment, that might help sort out what has been unhooked.....lets see if some of the guys can jump in here with some more info.

73
Jeff
__________________
Radio-active

NASA/SOHO


When I was a child
I caught a fleeting glimpse
Out of the corner of my eye.
I turned to look but it was gone
I cannot put my finger on it now
The child is grown,
The dream is gone.
but I have become comfortably numb.

Reply With Quote
  #3  
Old 06-14-2011, 01:25 PM
Junior Member
iTrader: (0)
 
Join Date: Jun 2011
Posts: 11
August Cassiato ASEE is on a distinguished road
Default URGENT! Varmint XL-600 NEEDS CPR! HELP, see photos.

Thanks a lot. I'm REALLY new at this.

Since I can't do much until they cut out my knee & stick in a new one, all I can is sit here. I got to do something or I would loose it.


Thank you for taking the time to help.

It was suggested that Mr. 555 might have a skit or info on this darn Varmint (pun intended).

Also I was told the Varmint XL-600, 2 driver & 4 finals might be say 2 6kv6A`s driving 4 6LF6`s
There are subs for the 6lf6`s, you can use 6JS6C`s or 6LB6 tubes.

Okay, I copied & pasted the tube stuff here.

I don't know where or if I should be concerned, where NOT to buy tubes from?

Should I buy new or used?

Does anybody know of a set of these six or more are for sale reasonably cheap (that work at at least 75% power?)

I would love to see this Varmint glow again!

Photos attached. if you need a different view, just let me know.

I get them to you all.

73's


Astro

Reply With Quote
  #4  
Old 06-14-2011, 01:38 PM
Robb's Avatar
Yup
iTrader: (3)
 
Join Date: Dec 2008
Location: Silicon Valley CA, Storm Lake IA
Posts: 7,829
Robb is on a distinguished road
Default

Might as well change out the electrolytic caps in it. Sure would help your chances of making it run/sound right. Finding electrolytic caps for high voltage applications is as easy as looking them up online. Little buggers are expensive - though! Same for the resistors.

Got pictures?
__________________
BASE: Kenwood TS-2000, GAP Titan DX, Diamond X50A, Sirio SY27-4, and IMAX 2000.
MOBILE: Galaxy DX99V w/RF Limited CR-577 mic, Sirio Z-180. Yaesu FT-8800R & Diamond NR-770.

Reply With Quote
  #5  
Old 06-14-2011, 03:11 PM
n0zna's Avatar
W9WDX Amateur Radio Club Member
iTrader: (3)
 
Join Date: Nov 2008
Location: Missouri south of St Louis
Posts: 1,224
n0zna is on a distinguished road
Default

Yep its 6lf6...its a wicked tube like a 8950...73s de JW
__________________
73 to all my friends,and you too Mr Berry unit 512 hope you reall like my Siltronix 1011d you never paid for.n0zna

Reply With Quote
  #6  
Old 06-14-2011, 03:31 PM
AudioShockwav's Avatar
Extraterrestrial Admin
iTrader: (2)
 
Join Date: Apr 2005
Location: High Sierras Near Yosemite Nat Park
Posts: 5,051
AudioShockwav has disabled reputation
Default

Quote:
Photos attached
Still can not see photos



73
Jeff
__________________
Radio-active

NASA/SOHO


When I was a child
I caught a fleeting glimpse
Out of the corner of my eye.
I turned to look but it was gone
I cannot put my finger on it now
The child is grown,
The dream is gone.
but I have become comfortably numb.

Reply With Quote
  #7  
Old 06-14-2011, 06:42 PM
Junior Member
iTrader: (0)
 
Join Date: Jun 2011
Posts: 11
August Cassiato ASEE is on a distinguished road
Default

Yes sir but I can't figure out why they won't upload I did it twice hit the browse selected three then told it upload and it just sat there then timed out. After two times of that I thought I would ask someone how to and what format the digi cam is another new one on me. Boy am I getting old!

Reply With Quote
  #8  
Old 06-14-2011, 06:43 PM
Junior Member
iTrader: (0)
 
Join Date: Jun 2011
Posts: 11
August Cassiato ASEE is on a distinguished road
Default


Reply With Quote
Reply

Bookmarks

Tags
skit diagram needed, tubes needed, varmint xl-600
Worldwide Radio Forum



Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
IS THAT AMPLIFIER REALLY WORTH IT?? TonyV225 Amplifiers 6 10-31-2009 09:17 AM
VARMINT XL 600 SCHEMATIC hank Amplifiers 1 07-22-2009 09:01 PM


All times are GMT -7. The time now is 08:20 PM.


Powered by vBulletin®
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.0
Worldwide Radio Forum