PC Programming – Use the Sentinel software to manage your scanner’s Profiles, Favorites Lists, Databases, and firmware updates. The frequency range of different models can range from less than 1MHz to over 2GHz, however the majority of scanners are designed to cover the VHF & UHF bands and typically cover from around 60MHz to 500MHz. HomePatrol Database – Includes all known radio systems in the US and Canada. The database is updatable with the Sentinel software and Uniden updates the main database weekly. When the Software Defined Scanners came along with uniden punching through the market with their flagship SDS100/200 I thought it was worth a shot . A valid product review is one where you have experience or knowledge of the product that you would like to share with others.

No obscenities, discriminatory, abusive, or other content not suitable in public or for younger readers. I tuned the frequency above and below 156.0 and the carrier seems to be more centered on 155.9975 than it does if I tune above to 156.0025. I basically lose the carrier at 156.005 but can still hear it at 155.995 but not as strong as 156 or 155.9975. SAME Weather Alert/Priority – Lets your scanner alert you when a SAME alert is transmitted on a NOAA weather channel. You can also set a weather channel as a priority channel. Conclusion , without hardware amendments and complete firmware redesign the SDS series will remain mediocre in terms of filtering and weak signal decoding of digital modes .

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Scanners are wide band radio receivers that cover arange of frequencies. Most have "gaps" in their coverage and generally the more you pay the fewer gaps they have. The main gap that the cheaper scanners haveis the UHF Military Airband. Favorites Scan – Allows you to organize your Systems into Favorites Lists. The scanner can scan any combination of Favorites Lists and the Full Database. Range Control – Lets you set how far out from your current location the scanner will search for channels in Favorites Lists and the database. All in all, it's a great scanner and I look forward to many years of fun with it. I hope to buy an SDS 100 soon so I can have a portable scanner as good as the SDS 200.

If your not used to menu driven radios this can be daunting but my advice is to persevere , you will get used to these menus over time .

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Uniden creates another first with the SDS100 True I/Q Scanner, the first scanner to incorporate Software Defined Radio technology to provide incredible digital performance in even the most challenging RF environments. The SDS100’s digital performance is better than any other scanner in both simulcast and weak-signal environments. The SDS100 is also the first scanner that allows you to decide what to display, where, and in what color. Custom fields put the information important to you right where you need it. And, one more first, the SDS100 meets JIS4 (IPX4) standards for water resistance. Of course, the SDS100 also includes all the advanced features you’ve come to expect from a Uniden scanner, including Customizable Color Display Multicolor LED Alert – The alert LED with 7 colors, Blue, Red, Magenta, Green, Cyan, Yellow, or White, can be used with your Custom Alerts. Just really read up and get some opinions on the SDS200... I am not for or against it because i don't own one - just think that "Am I jumping