[Elecraft] K3 LPF add-on filter

[Joe Subich, W4TV]

> So, with that said - what are people's opinions now on the LPF
> module? Is it still worth the purchase? Can a noticeable difference
> be heard, particularly on SSB with the filter installed?

Absolutely worthwhile.  Much smoother sound and dramatic reduction
of both 12 KHz clock as well as other artifacts above 4.5 KHz.

>> Finally, for those who performed the install themselves, what did
>> youuse to cut the two traces?

Xacto knife/scalpel works fine with more precision than a box cutter.

73,

    ... Joe, W4TV


On 11/15/2010 10:25 AM, James Sarte wrote:
> Good morning Elecrafters!
>
> It's been some time now since the K3 LPF add-on filter board was released.
> I've been contemplating purchasing one since its debut as I've noticed in
> the past hi-frequency DSP artifiacts, especially when listening with
> headphones.  However, as time passed and firmware improved, I don't seem to
> hear so many of the things I thought I heard before.  Perhaps my hearing has
> changed as well - who knows?
>
> So, with that said - what are people's opinions now on the LPF module?  Is
> it still worth the purchase?  Can a noticeable difference be heard,
> particularly on SSB with the filter installed?
>
> Finally, for those who performed the install themselves, what did you use to
> cut the two traces?  Will a box cutter work or should I use a dremel cutting
> wheel?
>
> Tnx,
> James
>