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This is a wireless intercom 2-way radio that operates on the popular [[FRS]] (Family Radio Service) frequency range. This is a wireless intercom 2-way radio that operates on the popular [[FRS]] (Family Radio Service) frequency range. The unit can serve to communicate with other intercom stations running on AC power, as well as walkie talkie and mobile units, making it much more versatile than ordinary intercoms. == Review ==[[Image:10star.png]] Great concept, poorly built product. Typically wireless intercom products are only designed to communicate with identical units. The idea of using [[FRS]] frequencies for an intercom system is one that should have caught on and become far more popular than it did. Perhaps one major inhibiting factor to the concept becoming more popular is poorly built products like this. The MK1800 would have been great had it not been for the high failure rate. The MK1800 has a high failure rate. After 10 years our tests show a 66% failure in the radio electronics. The most frequent problem is the automatic squelch circuit failing. The unit becomes sensitive to noise or fails to enter power save mode. Under the most common failure condition the unit will start to make a clicking noise at regular intervals, which is the result of it exiting the power save state an activating the speaker when no real transmission is being received. Anyone complaining that FRS is too noisy or there is too much traffic is not familiar with the PL privacy function of these intercoms or similar radios. The MX1800 has Continuous Tone-Coded Squelch System which allows you to take a channel which may have other voice traffic on it, and isolate out only the transmissions from your other intercoms. CTCSS/PL works rather well.The main shortcomings of the MX1800 are the small talk button and the way the user has to go about changing channels. The talk button should be much larger since it is the primarily used button. Channel changing functionality shouldn't be shared with volume on the same buttons, it is confusing. Even with these two minor design shortcomings, these would be absolutely great wireless intercoms if they were not so prone to failure. It is unfortunate this entry into the FRS market couldn't have been made with a better built product that become more popular.