[CQ] Serious geek: DIY 1750MHz spectrum analyzer

[Michael Shiloh]

Far beyond my capabilities, but beautiful to look at:


-------- Original Message --------
Subject: [TekScopes] DIY 1750MHz spectrum analyzer from Slovakia
Date: Sun, 14 Apr 2013 21:27:02 +1000
From: Robin Whittle <rw at firstpr.com.au>
Reply-To: TekScopes at yahoogroups.com
To: TekScopes at yahoogroups.com

Having just fixed my 7L14 spectrum analyzer and so being somewhat in awe
of the exotic electronics, plumbing and generally highly strung
electronics it involves, I was astounded to see that a fellow from
Slovakia built a spectrum analyzer with comparable capabilities.

There's no digital memory, and it doesn't have the 7L14's range of
bandpass filters, but it is a full three-stage spectrum analyzer, with
home-built mixers, microwave filters, log amplifiers etc.

   http://lea.hamradio.si/~s53mv/spectana/sa.html

The author - Matjaz Vidmar:

   http://lea.hamradio.si/~s53mv/

The VCOs are described elsewhere - not on the Net.  He doesn't use YIG
oscillators, so I guess the stability would not be as good as a spectrum
analyzer which did.

   - Robin      http://www.firstpr.com.au/tequip/