Speech Inversion Voice Scramblers

Our most popular, low-cost speech inversion scrambler. It is available on any inversion frequency between 2000-4096 Hz.

VPU-12
User-Programmable Simplex Inversion Voice Scrambler

Programmable for up to 16 speech inversion codes using 4-line binary. It is programmable to any inversion frequency from 2200-4096 Hz.

VPU-15
User-Programmable Inversion Voice Scrambler

Speech inversion voice scrambler with 4 selectable inversion codes. User-programmable features include multiple inversion frequencies, ANI, Deadbeat Disable, selective call, and OTAR.

VPU-8
Full/Half Duplex Inversion Voice Scrambler

Single code inversion voice scrambler compatible with Motorola's VPA (3500 Hz).

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