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 <[email protected]> Subject: Re: [Elecraft] XG3 Arrived To: "Edward R. Cole" <[email protected]> Cc: [email protected] Message-ID: <[email protected]> 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 [email protected] ====================================== ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
