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Reviews For: MFJ-2910

Category: Antenna Switching, Phasing, Controllers

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Review Summary For : MFJ-2910
Reviews: 2MSRP: 299.95
Description:
1.5kW 80/160M high-efficiency Matching Network. MFJ-2910 improves
efficiency on 160 and 80 Meters for the popular new 43-foot all band
vertical antennas by eliminating SWR-related coax and unun mismatch
losses. When fed with a 1:4 unun, the 43’ antenna has a reasonable
compromise SWR on 60-10 Meters. However, at 160/80 Meters it is
virtually impossible to match this antenna because of the low radiation
resistance. If you are using low loss coax, you will lose much power in
the coax and unun due to bad antenna mismatches.Installed at the
base of the 43’ vertical, MFJ-2910 will significantly eliminate these
losses and put 160 and 80 Meters back within the tuning range of the
tuner inside the shack. Includes high-voltage insulated base tube,
remote power injector with switch for 160, 80 Meters and off positions.
Handles 1.5kW. Matching box mounted in a rugged, weather-resistant
PVC housing. 3W x 16H x 3D inches.
Product is in production
More Info: http://www.mfjenterprises.com/Product.php?productid=MFJ-2910
# last 180 days Avg. Rating last 180 days Total reviews Avg. overall rating
0024.5
NZ5F Rating: 2020-02-14
Great product. Huge enhancement to low band vertical Time Owned: 3 to 6 months.
I will preface this as I am not a huge MFJ fan and i have had many less than satisfactory experiences with MFJ products, however, this is one product that has seriously impacted and improved my low band operations. I have erected a frankenstein 50' vertical from random aluminum I have collected using a R7000 base. I have a thousand feet of radials about with various lengths and my random length vertical tunes now on 160, 80 and 40 to below 2:1 where I want to operate thereby no additional tuner is necessary for my trusty SPE 1K FA. I am so happy with this product I can't believe it is MFJ.
N7YJ Rating: 2018-10-25
Great boost on 160/80 Time Owned: 0 to 3 months.
OK we all know 43 foot verticals are a compromise. I recently got back into amateur radio after a long absence. I put up a DX Engineering 43 foot vertical with 20/65 foot radials and their 4:1 UNUN. I used their recommended 190 feet of 400MAX. My rig is the new IC-7610 feeding the Palstar LA-1K and their HF Auto-Tune. First, like everything MFJ, you have to look for cold solder joints. None here which was surprising. However a mounting screw backed out on the 160 coil which you'd never find in the packing. Looked at the others and NO star washers! Hardware store run. The second issue was for me, the 160 coil is about 3 turns too short. I'm sure it has everything to do with my specific circumstance, but I'd prefer to move the center frequency down a bit. These items knocked a Star off. Performance was better than I expected. Checking with the 160M ragchew group over a few nights, transmit was profoundly better ranging from 3 S Units to the faraway crowd and going from 20 over to 60 over with the ham a couple miles away. Receive is improved as well likely due to improved resonance. So on good nights, barefoot is fine. Bad nights, the shoes have me getting out a bit better than hearing back. This is where I wanted to be. I'm not a great fan of MFJ given their endemic quality problems, but I have to admit, this made a great improvement to the compromise antenna.