[Test-Equipment] RF spectrum analysis

Brian Burns brian at lessonsinlutherie.com
Sun Jan 19 12:28:20 EST 2014


Hello All,

 

In my audio work as a Spanish guitar maker I use a wonderful audio spectrum
analysis program called Spectra Plus. I run frequency response curves on raw
wood, and partially completed guitars, to track the positions of resonances
in the audio spectrum, and with its Q calculating feature I can measure the
Q of any resonance. Initially I used an audio oscillator, frequency counter,
and a sound level meter to plot these out manually, but man was that a lot
of work! Once I got Spectra Plus, I never looked back (:->).

 

A couple of years ago I got seduced back into my old hobby of ham
radio---just what I don't need, a hobby! I would love to have a way to run
the same sort of frequency response curves at RF for checking the resonances
and Q's of tuned circuits, antennas etc. I could do it manually with my grid
dip meter, calibrated receiver, and VTVM, but now I'm spoiled! Does anyone
have a method, program, or a piece of hardware (down converter?) that yields
a graphic representation of a frequency spectrum? Any suggestions would be
greatly appreciated.

 

Cheers,

 

Brian Burns   Ex: W5BRO, K6UCD

 

See my website:  www.lessonsinlutherie.com

 



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