Digital Antenna Digital 70dB PowerMax Marine & RV Cellular Booster

by Digital Antenna

Product Details

• Product Dimensions: 22 x 11 x 5 inches ; 1.6 ounces
• Shipping Weight: 12.1 pounds (View shipping rates and policies)
• ASIN: B000NVQ8CU
• Item model number: 4KSBR-50M
• Average Customer Review: 3.0 out of 5 stars  See all reviews (3 customer reviews)
• Amazon Best Sellers Rank:
  • #77 in Electronics > Marine Electronics > Boating GPS Accessories
• Date first available at Amazon.com: June 29, 2004

Product Description

PowerMax™ Marine & RV Cellular Booster70dB Gain 3 Watt Dual Band Wireless Repeater SystemGet more bars with Digital Antennas PowerMax™ 4KSBR-50M marine and RV wireless cell booster. Designed for large boats with cabins, sailboats and RVs, this new and more powerful 70dB gain wireless cellular repeater system boosts the signal strength of your cell phone or air card to 3 watts and improves transmit and receive signals. The result is clean and clear voice quality with maximum data throughput on all carriers except Nextel or iDEN. Not for use in open console boats.Application: - Large yachts, sailboats and RVs (not for use in open console boats)Range/Performance: - Amplifies cellular signal up to 30 miles*Advantage: - Wirelessly enhance multiple cell phones in multiple rooms 18' to 40' from inside antennaRequirement: - 25' separation plus a structure between inside and outside antenna.* Increased range varies based upon height of outside antenna, type of cable used, cell phone carrier and location of cell tower. For maximum range, place outside antenna as high as possible using ultra low-loss cable.4KSBR-50M System Includes: 3 watt dual band 70dB gain cellular repeater (DA4000SBR) * 18 external 9dB gain antenna ( 288-PW ) Internal 9 dB gain antenna ( 426-PW ) 50 of DA340 cable for external antenna ( 340-50NM ) 15' of DA240 cable for internal antenna ( 240-15NM ) 1"14 threaded mount ( DM194 ) 1"14 threaded mounting ferrule ( F114 ) 12 VDC power converter ( DP515 )

Customer Reviews

Most Helpful Customer Reviews

7 of 7 people found the following review helpful:

4.0 out of 5 stars Does as claimed, August 18, 2008

By 

David M. Calaman (Northern PA, USA) - See all my reviews
(REAL NAME)   

Amazon Verified Purchase

A little pricey, but works as described. It didn't work very well with the omnidirectional outside antenna. Could not get enough seperation between inside and outside unit. Replaced outside antenna with directional yagi, and things worked like a charm. Only problem is, it adds another $80.00 to the price tag. Where I used this, I had less than 1 bar on the phone. Usually calls would drop in the first minute or so. With this unit, calls are solid with about 2 bars on the phone, as long as you are in the room where the inside antenna is installed. I was also able to maintain an internet connection with the Verizon broadband/National Access service. I used the unit in a house, and not a RV or boat, so I can't offer any thoughts on how it would work for RV or Marine.

4 of 4 people found the following review helpful:

4.0 out of 5 stars it works, March 15, 2009

By 

Alex Moomaw (Pagosa Springs, CO, USA) - See all my reviews
(REAL NAME)   

Amazon Verified Purchase

This review is from: Digital Antenna Digital 70dB PowerMax Marine & RV Cellular Booster (Electronics)

works very well on my house boat on lake powell. greatly improves signal connectivity and increases range of where signal is available. very simple to install.

3 of 4 people found the following review helpful:

1.0 out of 5 stars Does not work as advertised., November 3, 2010

By 

E. Martinez (Florida) - See all my reviews
(REAL NAME)   

Amazon Verified Purchase

This review is from: Digital Antenna Digital 70dB PowerMax Marine & RV Cellular Booster (Electronics)

While this may work, to improve reception in a building which has marginal signal inside, but adequate signal outside, this definitely DOES NOT increase range by 30 miles on RV's and boats. I specifically purchased this for my boat (they advertise a lot in boating publications and target the market). I installed the system exactly as instructed. I had the outside antenna on a mast above the boat (a Nordhavn 40 trawler). The antenna was 30 ft above the water. The inside antenna was mounted on the lower deck in a stateroom, with the antenna facing down and away from the outside antenna. There was at least 3 Fiberglass and wood bulkheads (Walls for you non nautical types) separating the antennas. I took the boat off the SW cost of FLorida (Marco Island) and started heading south. I usually lose signal about 9 miles south of Marco (Verizon). When I was down to 1 bar on my phone I powered up the amp. No difference, I had to literally put the phone directly underneath the inside antenna to get a few more bars, and then I only had signal for another 2 miles. I had the same experience with my Sprint MIFI card.

So lets see, over $500 + expense and trouble to install this thing under the best of circumstances (over water, line of sight to cell towers), only to get 2 additional miles over my hand held phone. Save your money, it just doesn't work.