An easy tracking generator for the TinySA #HAMsunday #HAM #radio

The tinySA is a small spectrum analyzer, primarily intended for 0.1MHz to 350MHz input and it has some other nice capabilities. The developer has released several updates to the firmware, correcting some of the problems found in the early versions, and some added features. DuWayne’s Place posts:

Because of these updates, I have been more impressed with the TinySA.

The one thing it is missing is a tracking generator. But, since I have a NanoVNA it was not an immediate issue.  I finally decided I would build a very simple from available eBay or other outlet modules. The most basic tracking generator is just a RF source at the first IF of the SA and a mixer. The RF from this source is mixed with the LO of the SA to give you a signal that tracks the sweep frequency of the SA.  I looked around at some of the PLL modules, and planned on doing something with an Arduino.  Then I found several versions of ADF4351 modules that were complete RF generators.

See the details in the post here.


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