Which amplifier should I use?
Choose the product that fits your application. Determine your application by deciding if your primary need is voice communication (cell phone) or data communication (computer). If your primary need is data communication, a direct connect amplifier will provide the best, most reliable connection possible.

Very poor signal area (voice or data) – DA4000
Poor signal area (building use) – DA4KSBR-50U with yagi antenna
Poor signal area (auto) – DA4000, DA4KMR-10A
Poor signal area (RV) – DA4000, DA4KMR-30U, DA4KSBR-50U
Poor signal area (boat) – DA4000, DA4KMR-30U,DA4KSBR-50U

Recommendations based upon achieving proper antenna separation when using an amplifier/repeater and outside signal strength of -70 to -90 dB.

Wireless amplifier/repeaters (all cell carriers except Nextel and iDEN):
DA4KMR-10A (38dB gain) – required separation (2’) and metal automobile roof
DA4KMR-30U (38 dB gain) – required separation (20’) and roof/wall structure
DA4KSBR-50U (60 dB gain) – required separation (40’) and roof/wall structure

All amplifier/repeaters require the outside antenna be installed outside of the structure (house, car, office, building, boat) and the inside antenna be installed inside the structure. Wireless amplifier/repeaters can not be used with both antennas in open air (i.e., convertible car or open console boat).

Direct connect amplifiers:
DA4000 – direct connect, no antenna separation (all cell carriers except Nextel, iDEN)
DA4000N – direct connect, no antenna separation (Nextel, iDEN)

Car with metal roof – DA4000 or DA4KMR-10A
Truck with metal roof – DA4000 or DA4KMR-10A
Convertible car – DA4000 only
Open console boat – DA4000 only
RV 20’ to 39’ – DA4000 or DA4KMR-30U
RV 40’ and over – DA4000, DA4KMR-30U, DA4KSBR-50U
Powerboats 36’ to 50’ – DA4000 or DA4KMR-30U
Powerboats 50’ and over – DA4000, DA4KSBR-50U
Sailboats 20’ to 29’ (outside antenna at top of mast) – DA4000 or DA4KMR-30U
Sailboats 30’ and over (outside antenna at top of mast) – DA4000 or DA4KSBR-50U
 

PowerMax DA4000MR

3 Watt 38dB Gain Dual Band Wireless Cellular Amplifier/Repeater Complete systems for use in cars, boats, RVs, homes and offices Wireless – no connection to cell phone Up to 1,000 sq. ft. coverage area Amplifies 800 and 1900 MHz bands Use multiple cell phones and carriers at the same time CDMA, TDMA, PCS, GPRS, GSM 850, GSM 1900 and AMPS

Direct Connect Cellular Signal Amplifiers
For optimum cellular signal enhancement. Cell phone or air card physically connects to amplifier. All amplifiers are dual band.
	North America: Use with all North American cell phones (except Nextel or iDEN).
	DA4000 Direct Connect Amplifier
	Europe/Asia: Use with all European and Asian cell phones.
	DA4000E Direct Connect Amplifier
Wireless Cellular Signal Repeater Systems
Enhance multiple cell phone signals simultaneously without a physical connection to cell phone. All repeaters are dual band.
	North America: Use with all North American cell phones (except Nextel or iDEN).
	4KPR-15R 50dB Gain Personal Repeater System	( up to 500 sq. ft. * )
	4KMR-30U 40dB Gain SOHO Room Repeater System	( up to 1,000 sq. ft. * )
	4KSBR-50U 60dB Gain Small Bldg Repeater System	( up to 5,000 sq. ft. * )
	4KLBR-100U 80dB Gain Large Bldg Repeater System	( up to 20,000 sq. ft. * )
	Europe/Asia: Use with all European and Asian cell phones.