Hello,
I bought this one. It has a built-in battery and can be operated via a USB port.

https://de.aliexpress.com/item/10050046 ... pt=glo2deu

Many greetings!

My reception conditions are poor in an old town centre (heavily built-up). I have had good experiences with the MLA-30+ (indoor) when receiving with the ATS-25. Special for the reception of the amateur bands (80m-15m) I built a magnetic loop antenna. Copper tube 6mm, 2m long=60 cxm diameter. Couplin...