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ANAN-7000DLE test report by Adam Farson, AB4OJ
Posted: Fri May 04, 2018 6:17 am
by va7oj
I am pleased to announce that my comprehensive ANAN-7000DLE Test Report is now also on my website.
http://www.ab4oj.com/sdr/apache/anan7000dle_notes.pdf73, Adam VA7OJ/AB4OJ
Re: ANAN-7000DLE test report by Adam Farson, AB4OJ
Posted: Fri May 04, 2018 1:39 pm
by NC3Z
Adam, you made a note about the GPSDO degrading the RMDR. What GPSDO were you using?
Re: ANAN-7000DLE test report by Adam Farson, AB4OJ
Posted: Fri May 04, 2018 6:27 pm
by va7oj
I was using an HP Z3805A GPS receiver (which incorporates an HP 11801A OCXO). The Z3805A is my lab standard.
73, Adam VA7OJ/AB4OJ
Re: ANAN-7000DLE test report by Adam Farson, AB4OJ
Posted: Fri May 04, 2018 6:59 pm
by NC3Z
So is this indicative off all external ref sources when used with the 7000? I am using a Trimble OCXO based GPSDO.
Re: ANAN-7000DLE test report by Adam Farson, AB4OJ
Posted: Fri May 04, 2018 10:28 pm
by va7oj
Hi Gary,
You can check by applying a test signal from a source with known low phase noise (e.g. a high-quality crystal oscillator) to the antenna port at about -10 dBm, and then connecting the GPSDO reference. If the noise pedestal on either side of the signal spike widens (on the spectrum scope), the external reference is degrading the receiver's RMDR.
73, Adam VA7OJ/AB4OJ