In the 1990s, these two modems were prized by linear satellite AMSAT operators (not cheap either), for their “ground stations”. Both controllers are currently for sale on eBay by “tubegurl” (Oregon), at very LOW prices. Appears to be a large (radio estate). — Paccomm owner, Gwen Reedy, W1BEL (sk), developed the Spirit-2 (initially called Sprint-2) capable of 38.4k receive and 9.6k for satellite mode or packet backbone https://slatsatn.net/wp-content/uploads/2022/02/PacComm-Sprit-2-d27c4f3a46c0... Mark Hammond, W8MH could tell you about the Spirit-2 (he owns one).

AEA DSP-2232 Multi-Mode DSP Controller Another 1990s favorite with multiple capabilities. http://old.timewave.com/products/dsp2232.html

DSP-2232 Operator’s Manual at Repeater Builders TIP https://www.repeater-builder.com/aea/pk232/dsp2232-manual.pdf Timewave has latest firmware: Ver. 7.032 (Dec. 1, 1993) EPROMs — greg, w9gb chicago