[Elecraft] K3 PSK no output

[Joe Subich, W4TV]

In fact, one can not transmit above 2800 Hz (with the 2.8 KHz filter)
as the filter roll off (and perhaps DSP limitations) result in little
or no output.

73,

    ... Joe, W4TV


On 3/5/2013 11:33 PM, Bill Frantz wrote:
> It occurs to me that you might not be able to transmit on frequencies
> much higher than 3KHz or so because of the limits in the transmit
> bandwidth with the 2.7KHz filter.
>
> Cheers - Bill, AE6JV
>
> On 3/4/13 at 6:16 PM, frantz at pwpconsult.com (Bill Frantz) wrote:
>
>> My computer software has a choice of waterfall bandwidth, 2K (from
>> 400Hz to 2400Hz) or 4K (400Hz to 4400Hz). In both Data A and SSB I can
>> adjust the DSP bandwidth up to 4200Hz on the high end which gives me
>> most of the bandwidth of the 4K setting. Note that you will need a
>> wider crystal filter than the 2.7KHz default to get the wider DSP
>> bandwidths.
>
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