[BC] Closest-frequency AM diplexes

[R J Carpenter]

WYRE 810 has an application to move to Essex (Baltimore) and diplex on 
the tower of WBGR 860.  That's around 6% spacing. WYRE proposes two 
towers while WBGR uses 3.  The axis are very different so no more than 
one tower would be in common.

Also in Baltimore, 1010 and 1400 have CPs to share a tower.  Both are 
ND.

Again in Baltimore, move-in 1190 has a CP to share all 6 of 1370's 
night towers for DA2. Unlike the last half-dozen 1190 
CPs/applications, maybe this one will be built. This is at the old 
WCBM 680 site, but with new towers.