[geeks] Low cost spectrum analyzers?

[wa2egp at att.net]

> >One path would be to get an old Tektronics scope (like the 454) and get 
> >the spectrum analyzer plug-in.  I've seen the scope go for under $200
> >(sometimes well under) and the plug-in for for under $100 depending on 
> >the particular plug in.  The scope is an old tube beast but they still
> >work (I have two) and you can get other plug-in for other purposes.
> >
> >Another possibility is to get a software spectrum analyzer in the audio
> >range and build an external device to heterodyne the RF down to the
> >audio range but that doesn't give you much of a frequency spread.
> >What are you attempting to do (measure)?
> >
> >Bob 
> >  
> >
> It's for a project between some friends and we are trying to get into 
> the range of 500Mhz up to
> 3-4 Ghz. It has to do with microwave transmission so. I guess the 
> tektronics sollution would do
> for now I will research into that. I saw quite a few plugins for 
> spectrum analysis on ebay just
> dont have much experience with them.

Just make sure you get the correct plug-in.  Tek makes a variety of scopes
with plug-ins for just about every one that is designed that way.
Nothing like getting a plug-in that doesn't fit.  Good luck on your
project.

Bob