Greetings everyone of you SWMLine dudes and dudettes (if there is such a thing). I was testing the signals this evening on my HR21-200 and HR20-700 and I got a weird thing that happened. After I came out of checking (I went through all the sats to SWM) the tuner I was on came up with a 721 message. To fix this I Channel Up and then Channel Down and the tuner came back to life. On both DVRs I am using CE 220h. In the morning I will check the H20-600 to see if it has similar behavior. (I was checking for 99[c] but no dice, BTW) Has anyone else noticed this too? Is this a known anomaly?