[Kenwood] TM-D700 "Problem"

Sun Jul 29 06:43:15 EDT 2007

TM-D700 selectively deaf on APRS. A friend has a D700 mobile that does not hear the stations that mine does with his car sitting right next to mine. He hears me and I hear him. He does not hear anybody else. His APRS distance limit was set to off like mine but I changed it to 2500 miles and it made no difference. As we went home, I sent him a message and at about 10 miles, I received his ack message so he received it. He only has one other station and mine in his "list" as having been heard. In our area, I receive several position reports or messages every minute and even as I sat next to him, he did not get them. 
Is there a setting that limits the number of calls in the "list" to something other than 40 or causes the "list" to fill up and not to shift the old ones off of the end?
I will have to do more testing but he says he has already swapped out the antenna and is about to send the radio back to get it checked out. I only had time to look at it for a few minutes.
I will swap his antenna (again) with mine this time. His antenna on my radio too.
I will put an power/SWR meter on the his radio/antenna. 
I will compare all the APRS settings with mine.
Anybody have any ideas? What else is there?
Thanks es 73, de Jim KG0KP