Freedom Feens Blog


$35 frequency analizer


My phone can do things your phone can’t do!

Hardware versions of this cost hundreds of thousands of dollars. Much cheaper on a good Android phone.

You need a phone that can do OTG (check online).

You need an SDL dongle, I got this:

You need an OTG cable, I got this:
You need this app:

and this driver:

here’s the manual:

and here’s an interesting video about it:

Also, if you want to know more, get this book: The Hobbyist’s Guide to the RTL-SDR: Really Cheap Software Defined Radio

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