Product Overview
The Digital Antenna PowerMax DA4KMR-30M is a high powered cell phone repeater intended for marine or RV use. The 4KMR-30M repeater system will receive cellular signal from outside the RV/Boat, amplify it, then rebroadcast it with a high-performance internal panel antenna.
The DA4KMR 30M cellular amplifier system comes as a complete cellular repeater kit. See below for a complete list of the amplifier and antennas which are included, or above for a picture of all the included cellular amplifier equipment. The DA4KMR-30M cell phone repeater kit is powered by a 12V DC adapter, for compatibility with RV and marine power supplies. AC adapters are available, but bear in mind that this is not intended for Home/Offic use. For Home/Office use, please use the Digital Antenna DA4KSBR-50U Cellular Amplifier.
This is a schematic of how the DA4KMR amplifier is used in a boat:

and in an RV:
Note: A minimum distance of 12ft and a structure (e.g. RV roof) between inside and outside antennas is recommended.
* Please note that for refunds on Digital Antenna products a 15% restocking fee applies. If you wish to exchange a Digital Antenna repeater for another product, then the restocking fee is waived.
| Kit Contents: |
Digital Antenna DA4000MR 3 Watt Dual Band Wireless 40dB Gain Cellular Amplifier |
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18" External 9dB Gain Antenna (288-PW) |
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Internal 9 dB Directional Panel Antenna (426-PW) |
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30' of DA240 cable to connect external antenna |
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15' of DA240 cable to connect internal antenna |
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1"-14 Threaded Mount (DM194) |
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1"-14 Threaded Mounting Ferrule (F114) |
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12V DC power converter |
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Installation manual |
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Technical Specifications
| Frequency: |
US PCS 1900 MHz Band
Uplink: 1850 - 1910 MHz
Downlink: 1930 - 1990 MHz
US Cellular 800/850 MHz Band
Uplink: 824 - 849 MHz
Downlink: 869 - 895 MHz |
| Gain: |
PCS: 54dB downlink (total)
+ 40dB Base Unit Amplifier gain
+ 9dBi Outside Antenna gain
+ 9dBi Inside Antenna gain
- 4 dB Cable loss
Cellular: 55 dB downlink (total)
+ 40dB Base Unit Amplifier gain
+ 9dBi Outside Antenna gain
+ 9dBi Inside Antenna gain
- 3 dB Cable loss |
| IP3: |
44 dBm |
| Impedance: |
50 ohms |
| Oscillation Control: |
Adaptive gain control |
| Antenna: |
Outside Antenna: 9dB (288-PW) Omnidirectional Antenna
Inside Antenna: 9 dB (426-PW) Directional Panel Antenna |
| Cabling: |
30-feet,
DA-240 50-ohm coaxial cable with N-male to mini-UHF male connectors
15-feet, DA-240 coaxial cable with N-male to mini-UHF male connectors |
| Connectors: |
Outside Antenna: N-type
female
Inside Antenna: N-type
female
Base Unit: Mini-UHF female x 2 |
View more technical specs (pdf)
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