[Elecraft] Re: K3 Firmware Update (SSB RX width limitation)

[wayne burdick]

Mike (N8XPQ) wrote:

>
> The latest update is great, however I am curious as to when some of 
> the more
> basic functions such as squelch, keypad beep, and ESSB TX will be 
> enabled.

We're working on all of these, Mike, along with the DVR and additional 
subreceiver-related firmware.

> I have also noticed that after the update, I can only listen out 4 KHz 
> wide
> versus the prior 6 KHz with the AM filter installed.

I assume you're referring to SSB mode. Even though the WIDTH control 
went to 6 kHz in SSB modes before, the DSP was actually restricting the 
RX bandwidth to about 4 kHz. We'll revisit the possibility of extending 
the upper passband in the future.

In AM modes, the WIDTH control now shows the *I.F.* DSP bandwidth (up 
to 10 kHz), reflecting an AM RX passband that extends up to about 5 
kHz.


> Also why not allow RX/TX passband down to 50 or so Hz?

We actually do process signals down to this level, but further 
improvement is possible. It's on "the list."

73,
Wayne
N6KR

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