[AMRadio] : Apache audio Real good - Use of 6146's

[manualman at juno.com]

1st Apache, bought in 1959, had 6146B's put in around 1972. There still
in there and still working. 2nd Apache had 6146B's put in around 1988.
There still in there and working. No parasitics but neutralization had be
adjusted. Whenever any new finals are put in, the neutralization should
be checked and adjusted if necessary.
Pete

On Mon, 15 Apr 2002 10:50:27 -0700 (PDT) Larry Knapp <kc8jx at yahoo.com>
writes:
> Gary - It's totally up to you whether you wish to use 6146B's in 
> place of
> 6146A's.  I refer you to G Zook's recent article in Electric Radio.  
> It's
> possible they do work in some early transmitters, but in others, 
> using 6146B's
> in place of the original design for 6146 or 6146A's will cause 
> severe
> parasitics and improper neutralization.  The 6146B's were designed 
> primarily
> for SSB operation, not AM.  It's up to you.  I prefer the 6146 and 
> 6146A's in
> my DX-100B, Valiant and Heathkit Marauder; all before 1963.
> 
> 73, Larry KC8JX
> 
> --- Gary Schafer <garyschafer at attbi.com> wrote:
> > Yes you are right Larry. I can never remember that the DX-100 was 
> advertised
> > 100 watts output and the Apache was advertised 150 watts INPUT. 
> You end up
> with the same output on both. I first see the 6146B advertised in 
> QST around
> 1963 or 64. I think the Apache appeared in 1959?
> > 
> > As far as using 6146B's in place of the A's though there is really 
> no problem
> > doing
> > so.
> > 
> > 73
> > Gary  K4FMX
> 
> 
> =====
> May your days be full of sunshine and good thoughts fill your head.
> From: Larry Knapp, KC8JX, St. Joseph, Mi  49085
>   Best 73's
> 
> __________________________________________________
> Do You Yahoo!?
> Yahoo! Tax Center - online filing with TurboTax
> http://taxes.yahoo.com/
> _______________________________________________
> AMRadio mailing list
> AMRadio at mailman.qth.net
> http://mailman.qth.net/mailman/listinfo/amradio
> 

________________________________________________________________
GET INTERNET ACCESS FROM JUNO!
Juno offers FREE or PREMIUM Internet access for less!
Join Juno today!  For your FREE software, visit:
http://dl.www.juno.com/get/web/.