[R-390] Spectrum Analyzer

[Ben Loper]

I wanted a sweep generator because I thought it would be more useful, this
thing just happened along.  Any recommendations on a good inexpensive sweep
generator?

On Mon, Mar 14, 2011 at 9:03 AM, Mark Johnson <mvjohn at sympatico.ca> wrote:

>  I have an older HP spectrum analyzer; got it cheap, and use it for looking
> at transmitter outputs - harmonics etc.
>
> I bought some good quality RF attenuators; expensive little beastie's, that
> allow me to reduce a typical 100 watt transmitter down to a few milliwatts,
> then feed directly into the spectrum analyzer. Gives a nice view of the
> signal output. I agree with the previouse posting - if i had to prioritze,
> I'd keep my O'scope and sweep generator before the Spectrum analyzer....
>
> Mark V Johnson VE3DJU/VE3LU
>
> > From: tshoppa at wmata.com
> > To: brloper at gmail.com; r-390 at mailman.qth.net
> > Date: Mon, 14 Mar 2011 09:23:51 -0400
> > Subject: Re: [R-390] Spectrum Analyzer
>
> >
> > Many surplus spectrum analyzers are not (by nature) HF spectrum. Many of
> the ones you'll see on the surplus market are VHF/UHF range. They can be
> adapted to HF with an upconverter.
> >
> > If you want to see how squirrely a typical 40's/50's/60's/70's ham
> transmitter looks during keying it might be of some use :-). Most likely,
> you do not want to know! Almost all screen tube PA's and drivers of that era
> will show some parasitic oscillation during keying.
> >
> > For receiver alignment etc. a sweep generator is far more useful than a
> spectrum analyzer. Here on this list we tend to focus on the lab-type HP
> equipment but realistically a Sencore-type TV/Radio service shop-oriented
> unit will do fine.
> >
> > Tim.
> >
> > -----Original Message-----
> > From: r-390-bounces at mailman.qth.net [mailto:
> r-390-bounces at mailman.qth.net] On Behalf Of Ben Loper
> > Sent: Monday, March 14, 2011 9:15 AM
> > To: r-390 at mailman.qth.net
> > Subject: [R-390] Spectrum Analyzer
> >
> > I found a good deal on a spectrum analyzer, but I'm wondering how much
> use
> > it will be working on boat anchors. Are there many alignment procedures
> > that would benefit from a spec analyzer or should I pass on it.
> >
> >
> >
> > “A fire has burned my hut to the ground -- how much better to see the
> moon!"
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-- 

“A fire has burned my hut to the ground -- how much better to see the moon!"