[Elecraft] K2 AF noise level?

[Stephen W. Kercel]

Keith:

I also enjoy the flexibility of an external AF filter, and have used 
an Autek QF1 for over 20 years.

However, my K2 has such a quiet AF output compared to my previous 
rigs that the hum from the QF1s internal power supply becomes quite 
noticeable and very annoying when I use it with the K2.

Maybe the QF1A is quieter,

73,

Steve Kercel
AA4AK



At 09:45 AM 5/16/2006, Darwin, Keith wrote:
>Hey 'Crafters,
>
>I'm debating between the KAF2 or an outboard audio filter for my K2.
>Possible choices are the SCAF-1 and an Autek QF1A.
>
>My goal is to greatly reduce the hiss that is there in the headphones
>when the narrow CW filters are engaged.  I'd also like to add some CW
>selectivity.  A notch would be great too.
>
>KAF2 has the benefit of being integrated into the rig but doesn't offer
>lots of flexibility.  The others are external but give you more control
>over the filtering.
>
>How well does the KAF2 kill the hiss?  I assume it does great for that.
>Does it add any noise back in?
>
>- Keith KD1E -
>- K2 5411 -
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