SSTV dedicated PC is used with following spec.
CPU: Intel Celeron 2.8GHz
OS: MS Windows XP Professional, SP2
Sound Card for SSTV: Creative Lab's SB PCI
SSTV Software: MMSSTV version 1.11G
An interface circuitry is used and contained in the PC case.
An amplified loud speaker is used to monitor both sending/receiving sounds.
The SSTV interface circuitry is accommodated in a removable storage case to be adapted into a 5.25" bay in PC.
DC +12V from PC power supply is fed into the interface circuitry and an external loud speaker with power amplifier built in.
Inside of the interface circuitry.
A magnetic relay for PTT and an audio transformer for modulation signal are used to secure the isolation between transceiver and PC.
VOX circuitry is included for V/UHF transceiver which does not have VOX function in it.
SSTV Interface Circuitry
Drawn by OrCAD by JA4OPP as his courtesy.
Hand drawn circuitry