What is the difference between the base and portable models of scanners in term of reception? What makes the base units "better"? (Or is it just that you can connect a giant antenna on your roof to them?)
With regard to the SDS 100 and SDS 200, it looks like they have the same specs/features. What is really different about them?
In terms of reception, keep in mind that good reception always depends on a good antenna. I have both the SDS100 & SDS200 and there is hardly any discernible difference when I have them both on the same rooftop antenna. Altho, I do seem to notice that the 200 fares a bit better with distant signals just enough to be noticeable. They both have their place - 100 as a portable battery operated, and 200 as base station.
As previously mentioned, the base units are considered better because they are bigger with better sound than a handheld scanner, and the option you already mentioned - you can connect to a giant antenna on your roof. I use my SDS100 as a base station scanner continuously charged in case of a power outage. With today's complicated communications systems, it's sometimes a better listening advantage if you can employ a couple of scanners to monitor the same system so as not to miss much.
There are a few design differences, but for the most part they are Big & Little brother with the same SDR technology and colorful displays. They are both top-of-the-line radios and a great addition to anyone's radio shack.
JD
kf4anc