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== FRS, GMRS, and Combination Intercom / Base Station ==One very useful application for the band is as a wireless Intercom system. This works great from floor to floor within a building or house to shop Intercom. A big advantage is that the system is completely compatible with mobile HT units. Using PL tone you can block other FRS and GMRS users in the area. Few companies have embraced this very useful application for the band. A few companies produced Intercoms then discontinued the products. Here is a list of the ones out of production or possible still in production. Sometimes they can be found on eBay and Amazon.comSome of these are FRS only, some are both. Some are UHF units that can be programmed for GMRS. They must be or have been available for under $200 new per unit to be listed here. 70 cm HAM radios are not included.* Audiovox FRS GMRS Weather GMRS 2000 Multi Radio Station Base Station* Audiovox GMRS3000 5-Mile 22-Channel FRS/GMRS Two-Way Radio with Mini Base Station* Memorex 14 channel FRS Base Station Model MK1800 * Relm/Bendix King RMV800* Relm Desktop Base Station 25 Watt 450 - 460 - 470 Mhz 16 Ch DBU2516B Radio* Maxon TruTalk TK514 Base Station