There seems to be some confusion on this point. Once a KX3 has had the extended
temperature compensation procedure applied, it will have drift of only about
+/- 10 Hz in CW and SSB modes on 2 meters. This is not as good as an
oven-controlled oscillator (which there isn't room for, of course),
So why did a previous reply suggest that it would not be OK for narrowband
use?
Anyone who uses a transverter will know that, as the frequency of the lower
frequency used and the transverter frequency used changes then the
output/input of the chain will change.
The multiplication occurs as
Dave,
Are you using a frequency multiplier *applied to the I.F. signal*? If not, then
any drift at the I.F., which in the KX3-2M case will be +/- 10 Hz, will simply
be *added* to any drift in the final signal.
What I said was that this amount of drift might not be compatible with
narrowband
On 4/8/2014 4:23 PM, Dave wrote:
The multiplication occurs as the chain of frequencies up to where you
want to get to multiplies and I really do not expect to have to argue
this with RF engineers
Dave,
Are you using (or expect to use) a TRANSVERTER for the UHF bands? That
is, indeed, pretty
Erm, yes, and yes.
I think that you need to think about what I said that I wanted to use the
KX3-2M for before you try to reply to my complaints that it wont do what I
want it to do.
I'm not using WSPR or any other data modes, other than CW, and that seems to
be where we are getting
If you're using a multiplier of the I.F., then yes, you will need better
stability than we can provide within the constraints of the KX3's hardware.
I'll add this to the FAQ for the 2-meter module.
If on the other hand you're using mixing to get from 2 meters to the higher
bands, the KX3-2M
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