It's the close in phase noise that concerned me Some hams
engineers) have shown that it doesn't get filtered out.
have to also filter out the desired signal to get the
phase noise. Do
you have information that refutes this? It's easy to find
*everywhere* and maybe the best I have is wrong.
I would otherwise be happy to have something like that for
generator and heterodyne channel oscillators. My notion of
(or available oscillator frequencies) is to allow for SSB
*AND* CW in
one transmitter. That is one heterodyne frequency per
channel (5) and
one each for either CW or SSB (2). Still five channels
with a simple
On 06/15/2015 11:11 AM, Don Wilhelm wrote:
> Following a DDS with a low pass filter will take care
of most of the
> crud and the low pass filter on the PA will take care
of the rest of it.
> I have looked at the spectrum of the Elecraft KX1 and
the output is
> clean even though the source is a DDS.
> With the right firmware, I think the KX1 could easily
be put on 60
> meters, but that firmware is Elecraft proprietary.
> Don W3FPR
> On 6/15/2015 9:52 AM, Bill Cromwell
wrcromwell@... [4sqrp] wrote:
>> Hi Nick,
>> If we want "simple" LEDs would be overly complex
and expensive. A
>> chicken-head knob can point at dymo label or
sharpie numbers one through
>> five on the front panel..assuming we actually use
a front panel.
>> I have been avoiding the DDS type stuff to also
avoid the transmitted
>> crud that goes along with them.
>> Bill KU8H