Radio Frequency Jobs

I need a matched transmitter-receiver pair built around a 200 kHz carrier that can cover at least 40 m in open air and recognise simple OOK (On-Off Keying) pulses reliably. The intended application is “Radio Frequency RF”, so there is no higher-level protocol to worry about; raw, clean carrier switching will do the job. Everything will be mounted and operated outdoors, so the design must tolerate ambient temperature swings, sunlight and occasional moisture without detuning or loss of sensitivity. Both TX and Rx are separate not transceiver and battery powered with minimum 2 days running time. What I am looking for • Circuit-level design of both the low-power transmitter and the super-regen/ super-het (designer’s choice) receiver, including complete schematics, PCB...

I’m putting in a modest public Wi-Fi service—think 200 Hectars Farm size—and I need an engineer who can own the end-to-end network setup. The target load is no more than 50 simultaneous users, so the design should balance rock-solid reliability with sensible hardware costs. Here’s what I’m after: • Produce a simple network plan that covers coverage mapping, access-point count/placement, and backhaul requirements. • Recommend specific hardware (APs, controller or cloud-managed option, PoE switch, firewall) that’s readily available in my region. • Configure the SSID(s), security (WPA2/WPA3-Personal plus guest isolation), basic traffic shaping, and a branded captive portal for terms-of-service acceptance. • Provide clear documenta...