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Digital Military Phone Switch (DNVT/TA-1042)

Hat for Raspberry Pi Pico that interfaces with 4 TA-1042 or other DNVTs and provides line simulator + USB device mode.

nick-andreNick Andre
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We reverse engineered the switching protocol for the DNVT and implemented a Raspberry Pi Pico firmware to interface with them. The device uses RS422 transceivers and transformers to send and receive bits in differential manchester encoding. The firmware leverages the Programmable IO modules on the RPi Pico, one for tx and one for rx for each of the 4 phone interfaces.

DNVT_box3rt_top_bom.csv

BOM, JLCPCB

Comma-Separated Values - 1.06 kB - 04/03/2023 at 10:03

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DNVT_box3rt_top_cpl.csv

CPL, JLCPCB

Comma-Separated Values - 3.20 kB - 04/03/2023 at 10:03

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DNVT_box3rt_2023-03-21.zip

Gerber file

Zip Archive - 424.02 kB - 04/03/2023 at 10:03

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