higher outputs. The space constraints would make stiff inside-the-XG3
power supply filtering very difficult.
My other question would be whether the buzz does anything at all to accuracy.
73, Guy.
On Thu, Apr 21, 2011 at 3:03 AM, 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 <
[hidden email]>
> Subject: Re: [Elecraft] XG3 Arrived
> To: "Edward R. Cole" <
[hidden email]>
> Cc:
[hidden email]
> Message-ID: <
[hidden email]>
> 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
> ======================================
> BP40IQ 500 KHz - 10-GHz www.kl7uw.com
> EME: 144-1.4kw, 432-100w, 1296-testing*, 3400-winter?
> DUBUS Magazine USA Rep
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