Midian’s VS-1000 series of inversion voice scramblers protect your voice communications against casual listeners. By mixing the frequency of the voice with an inversion tone in a balanced modulator, sum and difference frequencies are created. A low-pass filter eliminates the sum and the difference is transmitted as “inverted voice”. The “inverted voice” undergoes an identical process on the receiving end that reconstructs the voice.

Midian’s VS-1000-MPM1 plugs into the Motorola Professional Series mobile radios. These include the:

CDM-750, CDM-1250, CDM-1550-LS+, GM-140, GM-160, GM-328, GM-338, GM-338-LS, GM-339, GM-340, GM-360, GM-380, GM-398, GM-399, GM-640, GM-660, GM-1280, MCX-720, MCX-760, MCX-780, PRO-3100, PRO-5100, PRO-7100 and PRO-7200.

• User-programmable to any inversion code between 2100 – 4096 Hz
• User-programmable for up to 16 codes
• Plugs into Motorola Professional Series mobile radios
• Protects against casual listeners
• Programmable after installation in the radio using our MPS software and the RIB