Looks like NavCanada is at this again:
https://www.navcanada.ca/en/air-traffic/space-based-ads-b/ads-b-performance-requirements.aspx
About a year to equip if you want to fly in class A or B airspace. The non-oxygen equipped planes (class B) have a few more years.
They seem pretty clear that we need a diversity antenna:
"The aircraft system will require an antenna able to broadcast out toward space-based ADS-B receivers emitting 1090 MHz Extended Squitter. This requirement can be met either through antenna diversity (the use of a top and bottom antenna) or with a single antenna that is capable of transmitting both towards the ground and up towards satellites. Bottom mount transponders alone are insufficient.".
Now if only NavCanada could staff the surveillance capabilities they already possess. Not sure how they plan to provide ADDITIONAL coverage.
https://www.navcanada.ca/en/air-traffic/space-based-ads-b/ads-b-performance-requirements.aspx
About a year to equip if you want to fly in class A or B airspace. The non-oxygen equipped planes (class B) have a few more years.
They seem pretty clear that we need a diversity antenna:
"The aircraft system will require an antenna able to broadcast out toward space-based ADS-B receivers emitting 1090 MHz Extended Squitter. This requirement can be met either through antenna diversity (the use of a top and bottom antenna) or with a single antenna that is capable of transmitting both towards the ground and up towards satellites. Bottom mount transponders alone are insufficient.".
Now if only NavCanada could staff the surveillance capabilities they already possess. Not sure how they plan to provide ADDITIONAL coverage.