I noticed the thread on IF outputs and figured this probably deserves a thread of it's own.
Most SDR receivers only cover the HF range and some do include coverage up to the 50Mhz range. Though their sensitivity is lacking up in the very high end ranges. My Perseus while an excellent HF receiver only goes up to 40mhz. My Flex-Radio SDR-1000 and Flex-1500 both do include coverage up to 6 meters. The 1500 seems to have reasonable sensitivity up there. And I can't leave out my RF-Space SDR-IQ which only goes up to 30Mhz.
Now I have quite a bit of interest in having a spectrum analyzer for 2 meters, 440, and the aircraft band. The only SDR receiver that I've seen capable of doing that so far the FunCube USB "dongle" radio. But I've seen that it really requires external preamps and filtering to make it usable. Micro-Telcom was working on a project "Genesis" a while ago which would have had these frequency ranges, but I haven't seen much on it lately. And of course transverters could be employed but are more money than I'm willing to put toward the result.
Plus most hams are real frugal. OK cheap. Most want to do a project with the least amount of dollar output. I'm certainly in that group.
Enter the lowly analog signal scanner. Available on eBay for less than 1/4 of retail in most cases. Most have 10.7Mhz IF's which can be readily tapped, but will need to be amplified to bring the signals up to a usable level, and have no roofing filters which allow a large swath of spectrum to be watched. Using the scanner as a cheap converter really opens up a different aspect to SDR which isn't being offered yet at a reasonable price.
I'm posting this as more of a thought process to see if others have done this, their results, and are some scanners better than others?
This video on Youtube shows how this gentleman has done it using a Radio Shack Pro-2021. I've purchased this scanner to try this experiment out. I'll post what the results are. http://www.youtube.com/watch?v=pBlChNwNkjE