[Elecraft] SSB at something more then 2.2kHz?

Don Wilhelm w3fpr at embarqmail.com
Sun Dec 7 12:12:00 EST 2014


Frank,

You will get the new crystals with the KSB2 option, and the capacitors 
for the 2.4 kHz bandwidth.  So all you have to order is the KSB2 option.

I strongly recommend that you use Spectrogram for aligning the filters.  
For the OP1 filter (with the 2.4kHz width) set markers at 300 Hz and 
2600 Hz and center the passband between those markers.

For the FL2, FL3 and FL4 filters, you will be using the 5 pole filter on 
the K2 RF board.  Use Spectrogram to set the actual width of the 
passband because the actual width is often much greater than that 
displayed by the K2.  Set the lower frequency slope of the passband in 
the 300 to 500 Hz range to preserve intelligibility of the received 
signal as the filter width is reduced.

73,
Don W3FPR

On 12/7/2014 9:26 AM, Frank Krozel wrote:
> Hi Don,
> Good to hear of this.
> No it was built as a CW-only radio.
> I am making a list to send to Madelyn Monday.
> I kept the 100W PA that you saw a year ago.
> This radio will then have that PA on it in a few weeks (if I have time over the holidays hi hi)
> Frank
> KG9H
>
>



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