[AMPS] Blown TL922A... What to do?

[michael watts]

Rich, Tom and Don,

Thank you Don for this balancing message.

I would like to repectfully request that Rich quit
smearing Tom with snide-isms and Tom quit smearing
Rich with whatever - so that it will stop compromising
the value of your comments.  I don't want you to stop
because it is annoying - quite the contrary - this is
a very informative thread sprinkled with
entertainment!  And I don't want you to stop poking
each other!  Just don't go overboard.

So please keep it up but please don't say things that
cheapen or blur your basic points or give people cause
to dismiss either one of you out of hand.

We see clearly that both Rich and Tom have reputations
that they care about and both are in business. But
neither of these motivations necessarily cast any
doubt on any of their claims.

I'm a EE with a dozen or so patents and three
successful companies to my credit: yet I have learned
more in a shorter time span from this thread than from
any one thing that I can recall (realize, or course,
that since I am now retired there may be a lot that I
can't recall).  So I really appreciate it.

This mano a mano format has caused more good info to
flow than one would have imagined.  Keep it up guys! 
Just don't let the emotions get so out of hand that it
drives us (or you) away!

Thanks for all the good stuff!  And go get 'em! 

Mike wy6k

PS.  Sometimes it gets hard to keep who-said-what-when
straight.  Is there any way to make the attributions a
bit more clear?

--- Don Kessler <ki6sz@compuserve.com> wrote:
> 
> Tom wrote, 
> 
> "Sounds like you have outgassed. You need to take
> more nichrome...
>  
> The tank is typically a virtual short for VHF and
> UHF energy, 
> because it has a capacitor shunting the input. All
> your claims 
> about VHF parasitics damaging components are just
> "arm-waving" 
> to sell kits and slam manufacturers...
> 
> Mr. Measures fails to understand series resonances
> have lowest  
> impedance, and less impedance than either
> "component" alone, to 
> support his nichrome sales..."
> 
> You can say what you will, but in the last couple of
> years, Rich has been
> the only one here who has been able to explain the
> fundamental problem with
> the TL-922 -- lack of parasitic suppression.  I can
> also tell you from
> first-hand experience with well over a dozen
> formerly unruly TL-922s sent
> to me for repair and modification, plus two of my
> own TL-922s that used to
> eat bandswitches, that his suppressers have "tamed
> the beast."  My judgment
> as a BSEE, MSEE, and soon-to-be Ph.D., is that his
> analysis is sound and
> well thought-out.  Additionally, the implementation
> of his "solution" on
> the 14+ TL-922s that I have worked on would further
> attest to the validity
> of his analysis.    
> 
> I have never met Mr. Measures, but I have spoken
> with him several times on
> the phone, and he has always been very helpful.  As
> a happy owner of two
> modified TL-922s, I am fortunate to have stumbled
> upon his website and
> found his in-depth analysis of the design flaws in
> the stock '922 and his
> FREE instructions for modifying these amps.  
> 
> As for the snide comment regarding his "nichrome
> sales", his prices are far
> too low for him to be netting much money there. 
> Also, I'm very
> hard-pressed to find a local source for this wire
> that will match his
> prices -- especially in such small quantities... 
> Likewise his parts kits
> are very, very inexpensive -- definately a very
> small profit margin
> there...
> 
> So, if it is not parasitics that plague the stock
> TL-922, I would
> graciously request that Mr. Rauch and any of the
> other experts explain why
> less than 30 cents worth of nichrome wire (yup - $1
> will get you about 5'
> of nichrome wire from Rich) stops the TL-922 from
> self-destructing?  How
> about it?  Why not disprove his theory with a better
> theory of your own? 
> I'll be glad to implement "your" retrofit into a
> TL-922 and see what your
> success rate is.  It better be good, so far Rich's
> analysis is 14-0.  
> 
> 73 de Don  (ki6sz)
> 
> --
> FAQ on WWW:              
> http://www.contesting.com/FAQ/amps
> Submissions:              amps@contesting.com
> Administrative requests: 
> amps-REQUEST@contesting.com
> Problems:                 owner-amps@contesting.com
> 


__________________________________________________
Do You Yahoo!?
Yahoo! Mail - Free email you can access from anywhere!
http://mail.yahoo.com/

--
FAQ on WWW:               http://www.contesting.com/FAQ/amps
Submissions:              amps@contesting.com
Administrative requests:  amps-REQUEST@contesting.com
Problems:                 owner-amps@contesting.com