Data And Communication Technology / Audio - Video Systems Requests

how can buy the CTCSS TONE UNIT

I am looking for suppliers to provide all the necessary materials for low-voltage electrical installations, including DVR/NVR systems.

I want to purchase the following equipment: 1.Marine Type VHF Transceiver (Walkie Talkie) (5 Watt) with spare battery and security features during transmission 2.Military standard HF Transceiver (1 KW).

medium size screens and audio systems I'm looking for projector for medium size screens and audio systems processor. We are an Argentine importing company and I would need you to send me a catalog.