[Elecraft] [K3] K3 Rev C DSP with Low Freq Enhancement

[Joe Subich, W4TV]

> But since the capacitor values are all being increased, is it 
> not an option simply to add conventional electrolytic 
> capacitors in parallel to the SMT ones, as the photos on the 
> Russian website appear to illustrate? 

The changes on the Russian web site are not "official" from Elecraft. 

Other than the changes to the headphone coupling capacitors, the 
changes on that web site involve mostly adding large electrolytic 
capacitors as additional bypassing and decoupling to supply lines 
or internal voltage references in amplifiers.  Most of the changes 
are not related to audio response. 

73, 

   ... Joe, W4TV 
 


> -----Original Message-----
> From: elecraft-bounces at mailman.qth.net 
> [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Julian, G4ILO
> Sent: Sunday, October 11, 2009 6:44 AM
> To: elecraft at mailman.qth.net
> Subject: Re: [Elecraft] [K3] K3 Rev C DSP with Low Freq Enhancement
> 
> 
> 
> 
> 
> P.B. Christensen wrote:
> > 
> > I think what some folks are requesting is an updated schematic, 
> > showing the new values.  But what they may not realize is 
> that 7 SMT 
> > capacitors are changed -- or in the alternative, the 
> corresponding SMT 
> > resistors require solder re-work and that's in addition to 
> the C9/C13 
> > change and so the total
> > parts change may be in excess of 10.  That's a lot of propensity for
> > damage 
> > to the board and it really makes sense to just opt for the 
> board swap 
> > through Elecraft.
> > 
> > 
> But since the capacitor values are all being increased, is it 
> not an option simply to add conventional electrolytic 
> capacitors in parallel to the SMT ones, as the photos on the 
> Russian website appear to illustrate? That is something most 
> people would be capable of doing, and could be especially 
> attractive to those of us in Europe for whom the total cost 
> of the board swap will amount to a lot more than $65.
> 
> -----
> Julian, G4ILO. K2 #392  K3 #222.
> * G4ILO's Shack - http://www.g4ilo.com
> * KComm - http://www.g4ilo.com/kcomm.html
> * KTune - http://www.g4ilo.com/ktune.html
> 
> -- 
> View this message in context: 
> http://n2.nabble.com/K3-Rev-C-DSP-with-Low-Freq-Enhancement-sh
ip-date-info-New-swap-out-option-on-parts-order-page-tp3789876p3802936.html
Sent from the [K3] mailing list archive at Nabble.com.
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