Tuning gap between 325 and 350 MHz

Also posted on reddit: I measured another stick and this time I also noticed the gap between 325 and 350 MHz, as was reported earlier by Roger on reddit. http://www.reddit.com/r/RTLSDR/comments/tftz4/some_frequency_response_measu… I could trace it back to the fact that the E4K_REG_SYNTH is not set properly. I do not know why yet, but first setting a different value from the desired one seems to fix the problem. It might be the wrong solution for the wrong problem, but it seems to work for me. change this line in tuner_e4k.c:448 rc = e4k_reg_set_mask(e4k, E4K_REG_SYNTH1, 0x06, band << 1); to: uint8_t tmp = e4k_reg_read(e4k, E4K_REG_SYNTH1) & ~0x06; tmp |= (band << 1) & 0x06; e4k_reg_write(e4k, E4K_REG_SYNTH1, tmp ^ 0x06); rc = e4k_reg_write(e4k, E4K_REG_SYNTH1, tmp); Kire.