[Test-Equipment] RF spectrum analysis

[james.liles at comcast.net]

Hi David:

Very interesting instrument!  Would like to see its range down to 100 or 200
cycles especially for audio like the guitar man.  Will have to tear the
romance sheet apart to see if it will wind up in the shop.

There is a notion that the Asian test gear is somehow inferior or
unreliable.  I have one Asian instrument that I use to do temperature
compensation measurements and calculations for analog VFO work.  It is a
capacity meter that will measure down to .001pf and not drift for hours.
Just don't walk within 6 feet of the test setup because it will see you.  We
use it to measure class 1 temperature compensating capacitors because they
have a +-30ppm range.  Even an NPO or COG cap has a +-30ppm range.

Show me a western instrument that is that precise ---- Yep for under
$400.00.

Speaking of Asian test gear.  This is off subject but the old timers may be
interested.

For 15 years I've had a problem working at the bench.  Could go out and run
six eight minute miles.  Sit around for long and heart rhythm went
squirrely.  Wore ECG monitors for weeks and days at a time, docs even at
Mayo said nothing wrong.

Went to ebay and bought a $150.00 ASIAN hand held ECG instrument, waited for
rhythm reoccurrence, snapped a strip and Voila case almost closed.  Fed it
to the software which painted the the pattern before, during, and after the
malfunction.  Took it to the Bwana and he said wide eyed, it was very
unusual for a patient to bring a diagnosis to the doc.

Those Asian teen age kids sitting in a coffee shop reading comic books,
playing kill the dragon, and designing instruments seem to be doing a pretty
good job of out performing us I would say.

Kindest regards Jim

-----Original Message----- 
From: David DiGiacomo
Sent: Monday, January 20, 2014 10:31 AM
To: Discussion of Electronic Test Equipment
Subject: Re: [Test-Equipment] RF spectrum analysis

On Sun, Jan 19, 2014 at 5:00 PM, Brian Burns
<brian at lessonsinlutherie.com> wrote:
> ~ I think you would be very happy with a Rigol DSA815-TG spectrum Analyzer
> (brand new at $1,495).
>
> My favorite joke about being a guitar-maker:
>
> "The way to get a guitar-maker off of your front porch is to pay him for
> the
> pizza."

Just sell one extra guitar for $4000, and you can afford a $1500
spectrum analyzer.

Anyway, Santa Rosa probably has more spectrum analyzers per capita
than any other city.  Go to a ham club meeting there and someone will
help you out.
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