Somebody Somewhere wrote:
Is there a stand-alone, or PC software-based, RF spectrum display that
can interface with the 455khz IF output of a Ten-Tec RX340? I don't
really want PC control of the RX340, just a spectrum display. Thanks.

I don't think this is likely since you would need an A/D samping around
a megahertz, which isn't stock hardware on a PC. There are SDRs that
will give you a panoramic display on your PC.