Krakensdr 5 channel coherent rtl sdr for direction finding passive radar

1. What is Kraken SDR?
2. Can the RTL-SDR transmit?

What is Kraken SDR?

KrakenSDR is a Software-Defined, Coherently Operated, Five-RX-Channel Radio Based on RTL-SDR. A coherent radio allows for very interesting applications, such as radio direction finding, and beamforming.

Can the RTL-SDR transmit?

The downsides of the RTL-SDR is that it can't transmit and that the tuner range usually stops before the commonly used 2.4GHz band.