[Elecraft] XG3 Arrived

[Edward R. Cole]

I bought a 9volt battery for the XG3, today.  Running at 0 dBm on 
14.020 it puts out a nice clear CW note reading about S7-8 with the 
XG3 sitting about a foot from the K3.  I have a 2m rubber duckie as 
antenna on the XG3 and the triband beam 50-feet above the shack on 
the K3.  I lowered output to -33 dBm and still have a CW note though 
now about S1 and hearing a little ac noise coming thru the K3.

I switched to 28.020 and clean signal at either 0 dBm or -33 dBm; 
switched to 144.220 and good signal there, also.  So I guess I  hear 
some ac on 20m.  It has nothing to do with the XG3 - End of subject!

BTW the signal is just as stable and on frequency at 2m as on 20m.  I 
have had other xtal signal sources that drifted many KHz constantly 
for the first 30-min to an hour of use.  I hear NO 
drift!  wow!  There was a little freq. offset at 28.020 but I can 
always do the calibration if I really care.

Frequency accuracy is fine as it is. Note this is with the K3 
equipped with the K3EXREF so it is within 2-Hz accuracy.  Out of 
interest I connected the XG3 to my EIP-538 freq. counter and it shows 
1.819.997 MHz +/- 2 Hz; 20.020.014 +/- 5 Hz; 144.220.250 +/- 20 
Hz.  This counter has an internal TCXO that shows no error with my 
Rubidium standard.

I bought it for receiver sensitivity measurements and filter tuning, 
and the stability is more than adequate for that.

I haven't played with the XG3 utility but now that my CoilCraft 
7-pole LP filters and filter boards from Clifton Labs have arrived I 
will try making some response curves, scanning with the XG3.  I am 
making up four LP filters for use on the workbench (and with the XG3 
when I want to eliminate harmonics).  The filters were free 
engineering samples.

I will show the results on my website.


73, Ed - KL7UW, WD2XSH/45
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