[Elecraft] Difference between a K3 and a K3S

[Rajiv Dewan]

I have an early K3 that I fully upgraded, including the KXV3B board that has the 6m preamp. 

I understand that the DSP and associated audio boards, and the RF boards also have upgraded circuits between the K3 and the K3s. 

Raj, N2RD

Sent from my iPad

> On Jan 25, 2021, at 5:11 PM, Charlie T <pincon at erols.com> wrote:
> 
> There a LOT of differences between the K3 and the K3S.
> Many are minor improvements but some are major.
> Built in low noise 6M pre-amp for one. You don't have to buy the outboard
> unit.
> Somewhere I made a list of them all when I was considering whether to
> upgrade my K3 or buy a new K3S.
> After looking at all the pluses, I went with the new radio.
> Also, many of the K3 options will work in the new K3S too, so I basically
> bought a bare-bones K3S-100W version and swapped the filters etc.
> 
> 73, Charlie k3ICH
> 
> 
> 
> 
> -----Original Message-----
> From: elecraft-bounces at mailman.qth.net <elecraft-bounces at mailman.qth.net> On
> Behalf Of AB1DD
> Sent: Monday, January 25, 2021 1:03 PM
> To: elecraft at mailman.qth.net
> Subject: Re: [Elecraft] Difference between a K3 and a K3S
> 
> I think it was, but have no idea what the starting S/N was. It was near the
> end of the K3 run.
> 
> 73,
> Carl
> AB1DD
> 
> Resistance is futile.
> (don't know about reactance, though)
> 
> 
>> On 1/25/2021 11:33 AM, Mike Kopacki wrote:
>> Was the KSYN3A synthesizer ever built into the K3 as a standard item?  If
> so, beginning at what serial number?
>> 
>> Thanks,
>> Mike NJ2OM
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