If you can't find a good used TEK or HP unit, the newer Rigol and Siglent
units are quite acceptable. I have an earlier Rigol unit, the DSA-815 with
the tracking generator and SWR options.
Dave - WØLEV
On Tue, Jul 30, 2024 at 5:14 PM Dave (NK7Z) <dave@nk7z.net> wrote:
> Hi Joe,
>
> I got very lucky... A local club was closing out an estate, and this
> item was listed way at the bottom of the list, and I suspect no one saw
> it.
>
> The club was asking $300.00, for it. Given it was an estate, I let them
> know it was worth far more than they were asking for it, and they
> informed me it would not pass self tests, hence the price...
>
> So I took a chance and bought it. While nothing was broken or damaged,
> the unit was very far out of calibration... It was failing most of the
> self tests... The club did not want to deal with having it calibrated,
> and then selling it.
>
> I mentioned this to a good friend of mine, and he volunteered to
> calibrate it. He had help from a 2712 collector in one of the Nordic
> countries, Norway, or Finland, I believe. The fellow, I think living in
> Norway, had five of these 2712 units which he had gotten working, so he
> was sort of an expert on this device... I located him via the Tek
> message board on groups.io. This fellow had also rewritten the manual
> for calibration, with the newer RF board, which my unit had, so as I
> said, I got lucky. Anyway-- long story short-- after two months, (we
> had the unity stripped down to individual boards), and actually going
> through the process of exercising 6 or 8 the ATT relay sets, plus a pile
> of other trouble shooting steps, and actions, we finally got the unit
> calibrated, and it now passes all self tests. It actually appears to be
> good and working at this point. I have checked it against a calibrated
> SA.
>
> The insides of the unit look like it just came off the factory line...
> There is not a speck of dust in it anyplace, save a tiny amount on the
> HV for the CRT. I have wanted a good SA for decades, but Cheap Ham
> Syndrome has kept me from buying one...
>
> I do like this unit, and if you can find one that passes the self tests,
> for a good price, I would encourage you to buy one.
>
> 73, and thanks,
> Dave (NK7Z)
> https://www.nk7z.net
> ARRL Volunteer Examiner
> ARRL Technical Specialist, RFI
> ARRL Asst. Director, NW Division, Technical Resources
> I never learned from a man who agreed with me. (HeinLein)
>
> On 7/29/24 23:33, Joe wrote:
> > Hi Dave...
> >
> > I have been considering a nice spec analyzer. If I might ask....where
> did
> > you get your Techtronics?
> > Did you purchase new, and if so, how much was it? The one I have been
> > looking at is on Amazon and is the Siglent Technologies SSA3021X.
> >
> > Thanks for letting me jump in on the Keurig discussion! (I did change
> the
> > subject!)
> >
> > Joe - W7RKN
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > -----Original Message-----
> > From: RFI [mailto:rfi-bounces+w7rkn.7=gmail.com@contesting.com] On
> Behalf Of
> > Dave (NK7Z)
> > Sent: Monday, July 29, 2024 8:57 PM
> > To: RFI Mail list at contesting.com
> > Subject: [RFI] Keurig Coffee Maker as seen by a Spectrum analyzer...
> >
> > Hello,
> >
> > As promised, here is the link to my new Keurig Coffee Maker Classic, as
> > seen by my new spectrum analyzer. I have been itching for a chance to
> > use this baby...
> >
> > https://www.nk7z.net/rfi-snapshots/major-appliance-rfi/
> >
> > Scroll to the bottom of the page, there you will see the Keurig on/off,
> > and a shot of the test bed. It is not scientific, nor was it intended
> > to be... Just an excuse to use the new SA... :)
> >
>
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> http://lists.contesting.com/mailman/listinfo/rfi
>
--
*Dave - WØLEV*
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