Ten-Tec 715
MFJ LSP-520BX II Super Logarithmic Speech Processor
SP1-a Top Gun Technology
JPL95(?) Compression board but it needs 200ma of drive.
Symetrea Board(sp)
hfvhfparts
MFJ LSP-520BX II Super Logarithmic Speech Processor
SP1-a Top Gun Technology
JPL95(?) Compression board but it needs 200ma of drive.
Symetrea Board(sp)
hfvhfparts