Would one of these work  see link below, its a SDR OTS? I have the Chameleon Antenna showing up tomorrow. and I am trying to figure out what software to use. I am a CERT member and I am trying to get more involved. I am planning on getting a app on my phone so I can connect it to my phone and use it in the field or attach it to a Nano VNA, since it seems small enough to use.  I have a Kenwood D75 also that I am getting used to but I am trying to learn more about sigint. 

[Nano VNA](https://www.amazon.com/NanoVNA-H4-Analyzer-10KHz-1-5GHz-Measuring-Parameters/dp/B085CFHTBM/ref=sr_1_3?dib=eyJ2IjoiMSJ9.gAMk4beKYKK114NGWNfG9Q-_flv2QK5ZDmKjjocG1I2JDG3GPz3OZBQ9c3RbenE-T28_1dIJsMUKYMRC5uQXIsNzREoPcZnVAeJtm_IFue1tH4vYn_uX-05H-FJQKDgBLXJpRLyzT0JNkkom0-hDdlueWKgVGLc1aFcOJqgCnwcIuWj7sLQbPeNyaeaHNP7h-X4wSVI4HKhsP6ll0NvtfATbgAkncz602IlOZ9wM58I.PMICLtPVtYSEj8ZQ8OFUKFaDV3DEABD3_UDpfPxo1BM&dib_tag=se&hvadid=557421759052&hvdev=c&hvexpln=0&hvlocphy=9051582&hvnetw=g&hvocijid=14027387784180124376--&hvqmt=e&hvrand=14027387784180124376&hvtargid=kwd-847022653857&hydadcr=17982_13446699&keywords=nano%2Bvna%2Bantenna%2Banalyzer&mcid=88106d0a5e3332ec8baafa317b7bd9bd&qid=1762307082&sr=8-3&th=1)  
[SDR-OTS](https://rtotech.org/product/sdr-ots/)

So if I wanted to get into signal tracking