WAN = 3G, share=WIFI, does not turn on WIFI TX

[Eric Lee Elliott <eric ericelliott us>]

Can Networkmanager do sharing of WIFI with USB modem as WAN connection? 
 I've tried configuration repeatedly in various ways, without other 
computers detecting WIFI on air.
3G WAN to shared Ethernet works on both laptops.  Both laptops are 
Thinkpads with Atheros AR5212 802.11abg NICs.

If this does work in Kubuntu 10.04, where must I look for why WIFI does 
not transmit?

Eric