[Elecraft] K3: very quiet on CW

[Matt Murphy]

Also be sure you don't have the NR turned on by accident.  In my experience
there is not a signifiant difference in audio amplitude of a signal in CW
mode at 500Hz vs SSB mode at 500Hz when you adjust for the CW offset.

73,
Matt NQ6N

On Sat, Nov 19, 2016 at 1:36 PM, Don Wilhelm <donwilh at embarqmail.com> wrote:

> Bill,
>
> If you have your 2.7 and 2.1 roofing filters (not the 6kHz) enabled for
> CW, all should be well.
> The total noise heard should be reduced as the DSP bandwidth is reduced
> because the noise bandwidth is narrowed as well.
> However signals which are tuned to the PITCH you have set (default is
> 600Hz) should not be weaker than they are in a wider bandwidth.
> Try using the WIDTH knob to increase the DSP bandwidth, and you should
> hear the total band noise increase.
>
> Yes, the K3 is quiet as far as hearing the internal receiver noise (what
> you hear when the antenna is removed).  When you attach the antenna, you
> should hear an increase in total noise if all is well - how much will
> depend on the DSP bandwidth that is set.
>
> Remember that many SSB stations are running high power, while many CW
> stations are running low power - that may be part of the difference you are
> hearing.
>
> 73,
> Don W3FPR
>
> On 11/19/2016 12:33 PM, Bill wrote:
>
>> I have not used my K3 for CW, so I have no experience with it. So, a
>> couple of days ago I decided to give it a try, after all - winter is
>> coming.
>>
>> When I switched to CW mode - things got deathly quiet. Quiet as in all
>> the background noise vanished - along with most of the signals. I could
>> see them unchanged on the P3 - but, had to turn up the audio gain to
>> hear them. With the audio gain up, I could hear everything that my other
>> rigs were hearing - except no background noise. Compared to my past
>> experience - this is not normal.
>>
>> I am using a K3 set up for SSB and only having the 2.7. 2.1, and 6 kc
>> filters. Some ACG changes have been made to afford improved arm chair
>> copy on 75 and 40 meters.
>>
>> My question: Have I been missing out on using the quietest CW rig ever
>> made or is there something wrong with my receiver? It just seems too
>> quiet.
>>
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