06468 - I get from 0 to 20 for transponder 3 on 99b. When I get a 0 which has been most mornings lately I get a 771 for 2,4,5,7 as expected. When it is higher - <20 - picture is unwatchable. My readings on all transponders for 99b right now are 100,100,11,97,100,98.