just recieved another new SDS200 and Sentinel isn't on the SD card, wasn't there on my previous SDS100s and SDS200s.
The op is speaking of the Bcd536hp.
Sentinel came on the sd card with the 436 and the 536. Page 16 of the
436/536 printed manual states the following,
HOW TO INSTALL SENTINEL SOFTWARE
If you have not already installed Sentinel software, follow these procedures.
1. Use the USB cable to connect your scanner to your PC.
2. Turn on the scanner if it is not already on. Select Mass Storage.
3. USB Mass Storage displays while it is connected to the PC.
4. The microSD card in your scanner will install to your PC like an additional drive.
5. Open the drive folder and Double-click setup.exe in the Setup folder.
6. When installation is complete, Sentinel software is installed on your PC.
7. You can now disconnect the USB cable.
8. Sentinel will automatically notify you if a more recent version is available.
Mark's scanners for the 436/536 mentions the following,
No Programming Required - Factory programmed micro SD card for all known radio systems in the US and Canada.
The database is updatable with the included Sentinel software and
Radio Reference updates the main database weekly.
PC Programming – Use the included Sentinel software to manage your scanners Profiles, Favorites Lists, Databases, and firmware updates.