[Elecraft] K3 upgrade to K3S question

[gt-i at gmx.net]

Bill,
thanks for pointing out to option (1). After reading all the suggestions 
I will very likely do the KSYN3A upgrades only.
Regarding the USB/Sound card - I had to insert ground insulation for all 
the Audio/USB to PC connections to avoid ground loops.
Does anybod know if this one is already insulated?
73, Gernot DF5RF


Am 12.03.2017 um 01:41 schrieb Bill Frantz:
> There are two upgrade issues to consider:
>
> (1) The recommended modifications to bring your K3 up to the latest 
> engineering level. Check <http://www.elecraft.com/K3/k3_app_notes.htm> 
> for what you may need and how to install it.
>
> (2) The upgrades to install the new K3S upgrade boards. The big win 
> here is the KSYN3A board. It will improve your receive and fast CW 
> break in. The KXV3B board adds a second preamp for 12, 10, and 6 
> meters. The KIO3B 3-board set installs an internal "sound card" in the 
> K3 for computer interface of digital modes. It also replaces the 
> RS-232 connection with a USB connection.
>
> It is quite easy to install all three upgrade in a K3. Doing them one 
> at a time will be less confusing, but if you have a good idea of how 
> things in the K3 are connected together it is possible to install them 
> all at once. I, and my K3 survived the experience.
>
> 73 Bill AE6JV
>
> On 3/11/17 at 2:57 PM, gt-i at gmx.net wrote:
>
>> I've purchased a used K3 S/N in the 3ks, and plan to apply some of 
>> the K3S upgrade options.
>> Any experiences, hints or do's and don'ts to tell for me?
>> I'm using the K3 mainly for HF contesting, VHF with an external 
>> transverter and some DX chasing.
>> tu es 73
>> Gernot, DF5RF
>
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