>Check issues such as use of poor noisy power supply, inadequate power leads. >Leads from supply to rig not twisted pair, etc. Make sure connectors are >tight, lugs on power supply are tight etc. >-Stuart >K5KVH Just a hunch: I would be using a linear PS (e.g., 961, 962) if I owned an Orion :-) 73, John, W3ULS