rf-capture-cx23880-scripts-zsh

Description

This repo contains ZSH + bash scripts for RF capture (video8 / 8mm) at 40MHz/40MSPS via the vhs-decode project for the follwing operations:

1. CX auto level calibration, zsh script

   source cx-calibrate.zsh
       

2. FLAC RF capture, zsh script, set timeout in minutes. Check if tape 60/90 min and set accordingly.

   zsh capture-rf-flac.zsh /path/to/capture-40msps-8bit-cx-card.flac 95
       

3. vhs-decode video + hifi + vhs-decode-auto-audio-align + tbc-video-export FFV1 video coding, MATROSKA containter, this is a bash script –> just execute

   ~/scripts/rf/decode-rf.sh /path/to/capture-40msps-8bit-cx-card.flac
       

Note: This repo is for my personal use / archiving. Therefore adaption on paths and logic is required if your are attempting to reuse.

HW dependencies

1. Crystal mod 40MHz for 40msps 8-bit capture
2. Cooling mod: Heatsink + Fan mod (At 40Mhz chip gets hot and frames are dropped. You’ve been warned!)
3. BNC auf DuPont-Kabel
4. Capacitor 31 removal
5. RCA to BNC replacement
6. EV-S1000 or some other easily tap-able player (or not if you like adventure ;-) )

Referencing projects used in the scripts

1. https://github.com/oyvindln/vhs-decode/
2. https://gitlab.com/wolfre/vhs-decode-auto-audio-align
3. https://github.com/happycube/cxadc-linux3/