Hi Michael,
Yes....., unfortunately without the Bridge you will not get access to Mode C/S or the audio alerts. This decision was taken some time ago to stop people simply building 'basic' PilotAware's and using them as 'cheap' ADSB receivers, when the over-riding principle of the system is to provide inexpensive 'See,
Be Seen and Avoid' to all aviators, especially those who cant afford - or for technical reasons simply can't fit a high power 1090MHz transponder or ADSB out system.
Also, you are currently operating on a 30 day 'Trial' License. The Full Licence
comes with the Bridge, so without a Bridge you have no way of extending your operating period beyond your trial period licence.
Bridges are readily available through the PilotAware website
www.pilotaware.comBest Regards
Peter
(PilotAware Development Team)