HAL Communications DXP-38 HF Radio DSP Modem, New Open Box. Up for sale is a brand new, open box HAL Communications DXP-38 HF DSP modem. The DXP-38 is a well-regarded multimode digital modem for HF, known among RTTY and digital operators for excellent copy under tough band conditions. New-condition units are hard to find. Condition New, open box. Opened for inspection, basic operational test and photos only. Original box and packing are included. Please review all photos carefully, as they are part of the description. Multimode operation: RTTY, AMTOR, P-Mode (Pactor-compatible), and CLOVER-II. Crossed-X tuning display that works on all modes, plus a zero-center frequency error display for fine tuning. Adjustable FSK mark and space tones from 500 to 3000 Hz. Expanded CLOVER-II modes, including 8P2A and 16P4A. Simple rear-panel phono connections: AF IN, AF OUT, FSK OUT, PTT, and SEL-CAL. Connects to a computer via serial port. Runs on 9-18 VDC. Uses the same command set as HAL’s commercial DSP-4100 modem, so it’s compatible with third-party software that supports the DSP-4100. HAL DXP-38 HF DSP Modem. Manual, software disks (floppy), power cable, original box. Anything not listed is not included. Please ask any questions before purchasing. I’m happy to provide more photos or details.