[Elecraft] K2 vs. Drake 2B - New vs. classic.

[Darrell Bellerive]

I don't think that the speaker that is the problem. I can hear the raspiness 
on the internal speaker and several external speakers. Haven't tried 
headphones, don't like them and don't have any.

The raspiness I am hearing is similar to placing an AC transformer and the K2 
too close together. My K2 is at least two feet from any AC transformer and 
run from an 18 Ah gelcel battery charged by a one amp A&A Engineering Smart 
Charger. I do notice that the charger can increase the raspiness at times. 
Switching it off reduces the raspiness. The chargers are connected to the AC 
mains via a Tripp-Lite Isobar Ultra surge and EMI suppressor.

Now my raspiness is not into the realm of "splitting hairs" as it is with 
Keith, it is quite noticeable. Yet it is not always there. I just tuned 
across 40 meters and the CW stations sound fine now.

This same raspiness is even more noticeable on a Heathkit SW-7800 which is in 
another room. This receiver has a built in AC power supply.

I am starting to wonder if I have some sort of noise on my AC power mains. 
Next time the raspiness is there I am going to shut off all the breakers in 
the house and see what happens.

Darrell  VA7TO  K2#5093



On August 20, 2006 05:39 pm, Darwin, Keith wrote:
> Well, I've bypassed the KAF2 in the K2.  It seems what I'm hearing may be
> something added by the audio filter.  With it gone, the signal is cleaner.
>
> BUT BUT BUT - let me warn you.  This "raspy sound" of the K2 is small
> enough that you only notice it when you strain to listen for it.  In fact
> when I switch the AF in and out I just bearly hear the change.  It changes,
> but only by a small amount.  If you're just operating the rig, you'll never
> hear it.  After all, this isn't some cheaply made Asian rig.
>
> Clearly I've gone past the realm of "reasonable" into the realm of
> "splitting hairs"
>

-- 
Darrell Bellerive
Amateur Radio Stations VA7TO and VE7CLA
Grand Forks, British Columbia, Canada