Hello, I have designed and built an Alex clone with all the Alex features on a single board to match the size of the Hermes. On my checkout of the board, I noticed that XVTR RX relay is not activating. Bit 0 of U3 is high and never goes low. All the other relays work. Is this a known problem? All the HP, LP, antenna relays are functioning. ??? 73's Glen K4KV