[Heathkit] Re: need mod info for SB-100

[Edward B Richards]

Hi Ken, et al;

I looked at your web site but did not find the info I seek. I want to
thank everyone who responded to my post. You all said basically the same
thing. "replace the RF amp with a 6HS6 and forget it". I Think there is
more to it than that:

. > Chuck Penson said "The kit amounted to a new RF amplifier tube  
> (6HS6) ...and a couple of new parts...look between tubes V10 and V11 
> ...for the addition of a resistor and a small disc capacitor that 
> have been tack soldered between existing parts. Also look for a 
> space left by a capacitor clipped out near V10." Comparing the 
> schematics I see C417 changed from a .02 to a .005, C425 changed 
> from a .02 to a .005, and R422 added. I wondered if that is what the 
> kit does. It doesn't jive with Chuck's description. 

Maybe that is why several people said it didn't help much. What I am
looking for is the component designation and value of those components
being changed/replaced/ added. Thank you

73, Ed Richards K6UUZ


On Sat, 10 Jul 2004 23:15:10 -0700 "Ken Kaplan" <krkaplan at cox.net>
writes:
> Ed,
> 
> That one is real simple. Just replace the 6AU6 rf amp tube with a 
> 6HS6. You should 
> then get the sensitivity of an SB-102. Go to the website below my 
> name and you'll 
> find a bunch of good documentation on modifications and service 
> bulletins for the 
> SB-10x line (and HW-10x).
> 
> 73 Ken kb7rgg
> http://www.qsl.net/kb7rgg/
> 
> > Hi All;
> >
> > I am acquiring a SB-100 and see in Chuck Penson's book that 
> Heathkit put
> > out a simple modification kit to improve the receiver sensitivity 
> to that
> > of the SB-102. Can someone tell me where I can obtain the info for 
> this
> > mod. Thank you.
> >
> > 73, Ed Richards K6UUZ
> 
> 
>