Bulletin: MJ1000 Equipment: MFJ-1270 / TNC Subject: ittermittent MFJ crashes... Those of you that are using the older MFJ 1270 with the mini phone connector for the DC input would be wise to replace this connector with a "coaxial" type. For th past 2 weeks, I've been fighting an intermittent BLOCK TIMEOUT error whi ch was caused by this cheap connccto.. It wasn't bad enough to completely reset the TNC - but did confuse hostmode protocol. Physically moving the TNC didnt reveal this problem. The mini phone connector was a poor choice for a DC connector and should be replaced even if you don't show any problems --now...