It was functionally similar to an Altair or PDP-8. The company was very supportive of my effort to learn computer engineering and programming and gave me the 8080 CPU and some samples of 6116 (2K x 8) CMOS memory that I kept alive with NiCads so I wouldn't have to enter the bootstrap loader each time. A Teletype saved programs on paper tape until I built an FSK modem to store them on a cassette recorder. The I/O ports were similar to an IBM PC's except the video which was a monochrome version of the Radio Shack Color Computer's.
I bought an RSP1A at a hamfest last weekend.
The free SDRuno program makes it a universal radio receiver for up to
2 GHz, and it can also be a spectrum analyzer over that range. While it doesn't have the calibrated accuracy, wide scan width or tracking generator output of my HP spectrum analyzer the signal display is good, and looks much better on an HDTV.On my suggestion the seller set up the demo to receive ADS-B data from nearby aircraft and overlay their locations onto Google Maps as a virtual radar, which had been a 90's Mitre project. ADS-B is at 1090 MHz, weather satellites are at 137 MHz. The aircraft band is 118-136 MHz. The Grants Pass tower is at 122.8 MHz, Cascade Approach is
124.3, and your weather (wx) is at 120.0. .I bought a 25-1300 MHz discone antenna for it that I haven't set up yet, since I spent yesterday helping a neighbor fix his garage roof. The feed from my 50 foot high TV antenna was good enough to receive an AM broadcast station at 900 KHz.
-jsw