[Elecraft] XG3 Arrived

[Edward R. Cole]

Wayne,

I connected the XG3 directly to my sub-Rx via the aux ant and the 
signal is a clean CW note.  I did a quick calibration check at 14.020 
with -73 dBm and s-meter reads S-8 so pretty good (uncalibrated since 
I got the radio a year ago).  I did another test transmitting 0dBm 
thru the air and can see that it is 60-Hz hum from something (I hear 
the CW note in there).  I checked for ripple on my bench PS and see 
nothing at .005 with the scope.  It ran for about half an hour with 
no detectable drift in the tone frequency.  That is impressive 
considering the K3 has the K3EXREF.

I wanted to report back so that my earlier report was not seen as a 
negative about the XG3.  BTW be careful switching to -33 dBm into the 
K3 it really clears out the dust in the speaker.  Running -107 dBm 
shows S-2 (36 dB less than S8).  That really shows off the linearity 
and accuracy of the K3 s-meter.  I set up all the recommended 
settings for receiver sensitivity measurement.

Later I will connect my Sinader meter to do a S+N/N measurement on 
28-MHz (my freq of interest as IF for 2m and 1296 transverters).  Be 
interesting to compare with the internal audio meter in the K3.  I 
will also compare the XG3 with my 1296 signal source.

XG3: very nice!

Ed - KL7UW

------------------------------

Message: 44
Date: Wed, 20 Apr 2011 17:30:30 -0700
From: Wayne Burdick <n6kr at elecraft.com>
Subject: Re: [Elecraft] XG3 Arrived
To: "Edward R. Cole" <kl7uw at acsalaska.net>
Cc: Elecraft at mailman.qth.net
Message-ID: <D0BF60D3-720D-43AF-8FD2-28C224300993 at elecraft.com>
Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes

Ed,

You should not hear a hum or buzz when listening to the XG3 on a
receiver. The fact that's it's not a sinewave doesn't mean that it has
audio-frequency modulation; it is a pure carrier. You might be hearing
60-Hz pickup due to the lack of a common ground, etc.

Wayne
N6KR





73, Ed - KL7UW, WD2XSH/45
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