The M349-859M1 from Microsaw is a Delay Line with Frequency 804 to 904 MHz / 814 to 914 MHz, Center Frequency 854 to 864 MHz, Delay 1190 to 1210 ns, Group Delay 5 nS, Insertion Loss 26.5 to 28 dB. Tags: Surface Mount, Fixed. More details for M349-859M1 can be seen below.