Call Search
     

New to Ham Radio?
My Profile

Community
Articles
Forums
News
Reviews
Friends Remembered
Strays
Survey Question

Operating
Contesting
DX Cluster Spots
Propagation

Resources
Calendar
Classifieds
Ham Exams
Ham Links
List Archives
News Articles
Product Reviews
QSL Managers

Site Info
eHam Help (FAQ)
Support the site
The eHam Team
Advertising Info
Vision Statement
About eHam.net

   Home   Help Search  
Pages: [1]   Go Down
  Print  
Author Topic: Atlas repair  (Read 625 times)
K9FON
Member

Posts: 1012




Ignore
« on: September 05, 2009, 04:10:32 PM »

Does anyone know a good Atlas tech? I have a 210X that needs a tune up.
Logged
K0BG
Member

Posts: 9845


WWW

Ignore
« Reply #1 on: September 05, 2009, 05:59:11 PM »

All you need is a good service monitor (stable signal generator), a hex tool, a schematic, and about 30 minutes of your time. It's simple, and straight forward. The only tough part, is getting the band pass centered. Fact is, you can get fairly close with just the marker and the S meter.

Alan, KØBG
www.k0bg.com
Logged

WB2WIK
Member

Posts: 20547




Ignore
« Reply #2 on: September 05, 2009, 06:02:57 PM »

What are the symptoms?
Logged
K9FON
Member

Posts: 1012




Ignore
« Reply #3 on: September 05, 2009, 07:33:08 PM »

Well the easy parts is done. I gave it a tune up tonight. It was transmitting but now its dead. The finals look ok but i found a resistor that is blown. I will dig into it more tomorrow.
Logged
9A5BDP
Member

Posts: 106




Ignore
« Reply #4 on: September 06, 2009, 12:25:57 AM »

I have also one Atlas 210X that needs adjustments. Please tell procedure steps for proper way of adjustment. I rebuild power amplifier board after last owner burrnigout. PA stage works now fine but sensitivity of receiver is poor.

Thanx in advance...
Logged
K0BG
Member

Posts: 9845


WWW

Ignore
« Reply #5 on: September 06, 2009, 05:23:57 AM »

As I said above, it's about as simple as they come. You can get very close by just using the calibrator, the S meter, and a good ear. If you have a stable RF generator (service monitor?), it takes almost as much time removing the covers as it does to tweak the coils and caps.

Alan, KØBG
www.k0bg.com
Logged

N5YPJ
Member

Posts: 642




Ignore
« Reply #6 on: September 06, 2009, 12:14:03 PM »

Mel at Kcomm in San Antonio (tel. (210)344-3311 ) did a great job on my Atlas 210x.

If you do go with a tech beware that you can easily spend more repairing the old rig than it's worth and you still have an old radio.
Logged
K9FON
Member

Posts: 1012




Ignore
« Reply #7 on: September 07, 2009, 09:12:33 AM »

Id like to try to fix it myself.
I think i found the problem. I HOPE!
I found what looks like a resistor that was blown open. However i cant identify it.
It is black and looks like a football with two leads coming out of the bottom. The top of the resisitior is green with a tiny black letter "C" and the color bands starting below the green are brown (gold perhaps?) green and blue.
Logged
WD5GWY
Member

Posts: 391




Ignore
« Reply #8 on: September 07, 2009, 06:03:07 PM »

Here's a link to a webpage that has a lot of good
info on the Atlas 210X and 215X. You will find
schematics and other useful info there.
Good luck.
james
WD5GWY

http://www.qsl.net/on6ab/Atlas.html
Logged
K4DPK
Member

Posts: 1077


WWW

Ignore
« Reply #9 on: September 07, 2009, 06:21:43 PM »

OK…It needed a tune-up, so you tuned it up.

Then it stopped transmitting.

What guidelines did you use to tune it up?

Now you’ve found a part “blown open”?

I can tell you for certain, if a resistor (or whatever) fails catastrophically and “blows open”, there’s more wrong than just that resistor.  Something else caused the blow-out.

Can you read a schematic?  Can you identify the part and tell us in what part of which circuit it is used?

Phil C. Sr.
k4dpk
Logged
K9FON
Member

Posts: 1012




Ignore
« Reply #10 on: September 07, 2009, 06:41:56 PM »

I gave it a tune up to improve the receiver.
I did nothing to the TX part. If i could find a way to insert a pic on here i would. It is much easier to do that than describe the problem than try to explain it on here.
Maybe one of you guys can email me and help me out that way.
k9fon@mchsi.com
Logged
Pages: [1]   Go Up
  Print  
 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.11 | SMF © 2006-2009, Simple Machines LLC Valid XHTML 1.0! Valid CSS!