I saw this on the Strong Signals Frequency Board; anyone have any clues... ============================ MSP Glen Burnie Barrack has been dispatching "400" series ground units on 44.74 w/ PL code 110.9 (same freq/PL as aviation via SYSCOM) for several days. Still hearing aviation activity, as is normal on this freq/PL code. Anybody know what's going on? =========================== 73s Mike