Mario ) writes:
John Miles wrote in message ...
In article ,
says...
hi, where can i find practical high fre spectrum analyser circuit?
thanks


The W7ZOI homebrew spectrum analyzer article is not to be missed:

http://www.qsl.net/n9zia/wireless/pdf/9808035.pdf (part 1)
http://www.qsl.net/n9zia/wireless/pdf/9809037.pdf (part 2)

You'll find this design vastly superior to the "poor man's spectrum
analyzer" projects out there that are based on CATV tuners.


Here is an updated version of the W7ZOI spectrum analyzer on the same site:

http://www.qsl.net/n9zia/spec/index.html

For that matter, Wes Hayward has his own webpage, and he has some material
related to the project at:
http://users.easystreet.com/w7zoi/SA.html
According to that page, one can download the original articles from
the ARRL website, in pdf format, but doing a search over there, I don't
get a hit on the articles.

I don't see it in the 2001 Handbook (the only recent one I have), but
perhaps it's in that new Hayward book, "Experimental Methods in RF Design"
but I've yet to order my copy.

And of course, Kanga, http://www.bright.net/~kanga/kanga
has boards for the project, and they have some additional information
on their website.

Michael VE2BVW