4 GHz Terrestrial Microwave Discussion. Topics of Discussion. 4 GHz Committee Comments Existing Use Issues. 4 GHz Committee Comments. The 3.7 to 4.2 GHz frequency band appears to be underutilized.
How did the band become a less than favorable frequency band for use by the carriers?
Proliferation of RO terminals
Lack of interference shielding
Numerous AT&T routes making it congested at the time
Lack of manufacturers making the equipmentIssues
Where do we go from here?