[App_rpt-users] RFI on Baofeng Node with sound fob.

To this day every Baofeng Node with a modified sound fob I have built has had some RF problem or another. The first node had a horrible bus noise whine through the transmit audio. My next nodes have weird issues, where when the transmitter drops, the node double-keys or even triple-keys, and I hear the courtesy beep a few times. Lastly, the sound fob is giving me a lot of RF noise on all UHF frequencies while my node is not transmitting and will break a Carrier Squelch handheld if the HT is within 5 feet or so of the node. How does this node not have any problems?: http://www.kg5ebi.com/uncategorized/the-smallest-all-star-node/ What is the best way to kill this RF issue? Skyler KD0WHB