nicsure

TechMind's iRadio UV98 (RT-880) Video

Added 2025-05-23 21:45:45 +0000 UTC

Matt recently uploaded an excellent video of this radio. However, some things about this radio didn't add up at first glance.

The radio can receive below 18 MHz, which the BK4819 cannot do, it can also use "proper" USB and LSB which again the BK4819 cannot.

This leads me to suspect this thing also has an Si4732 lurking in it as well like the RT-860, maybe utilizing the second antenna? Although I can't seem to summon the Google-Fu to confirm this.

If so, twin BK4819s and an Si4732 would make this a very interesting project indeed. But, the big elephant in the room is what MCU is this thing using? The amount of GPIOs it would require to drive two BK4819s and an Si4732 along with all the other IO seems like too many for a regular old ARM Cortex. We need some info from Radtel but they've gone weirdly silent since that FCC nonsense dropped.