Currently, RadScheduler's iCalendar Export functionality aims to export the appointments just like they are represented in the RadScheduler itself. If you need not to export recurring appointments then you can create only regular appointments; you can even remove the recurrence editor from the advanced form thus confining the users from creating recurring appointments.
The following online demo shows the iCalendar Export functionality of RadScheduler in more details:
I hope this will help.
the Telerik team
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