MFJ-939 Plug&Play IntelliTuner Automatic Antenna Tuner
Plug & Play Auto Tuner
Plug & Play! You won’t even know it’s there . . . MFJ-939I/K/Y automatically tunes your antenna as you tune your radio. SWR is just always low.
Tunes your coax fed or random wire antennas 1.8-30 MHz from 2 Watts QRP to full 200 Watts SSB/CW.
Matches 6-1600 Ohms (SWR up to 32:1) — that’s a 50% wider matching range than competing products that are less capable and higher priced . . . and it’s made in the USA.
Highly intelligent, ultra-fast tuning!
As you’re ragchewing, contesting or DXing, the MFJ-939 is learning your antenna and the way you operate and storing all this in its 20,000 memories. The more you use it, the more it learns.
Measure & Compute = Instant Match
MFJ-939 uniquely measures your antenna’s complex impedance (R, X), computes the L-network and snaps in needed components for instant matching.
AdaptiveSearch
AdaptiveSearch determines a sub-set of all solutions that can provide a safe match and searches only that subset giving
you an ultra fast match. Others search slowly through all solutions.
InstantRecall
InstantRecall first checks its memory to see if you have operated this frequency before. If so, tuning is instantaneous and you’re ready to go!
MFJ VirtualAntenna Memory
MFJ exclusive VirtualAntenna Memory system gives you 8 antenna memory banks of 2500 memories each.
You can use an antenna switch to select up to 8 antennas and assign each antenna its own 2500 memories!
4 Times More Solutions and Faster!
MFJ has 256 values each of capacitance and inductance for 131,072 matching solutions giving you a finely tuned very low SWR. That`s 4 times the 32,768 solutions of competitors using only 128 L/C values each!
Don`t be fooled by competing products claiming fast search times — if you have a quarter of the matching solutions, of course,it takes less time to finish but it`s not faster.
MFJ`s faster speed comes from advanced technology and software algorithms not from fewer solutions.
Audio SWR Meter
An Audio SWR meter beeps when SWR <1.5, 2, 2.5, 3. Alarms if >3. Audible & Visible Diagnostic messages.
Heavy-Duty Components
Heavy-duty L-network: 10 Amp/1000V relays, RF duty silver mica caps won’t burn up. Safe, reliable, continuous 200W SSB/CW.
As Small as Your Radio
Tiny 6 1/2W x 2 7/8H x 8 3/8D”. 2.4 lbs. SO-39s, random wire ant. & gnd posts.
Never Obsolete . . . Super Versatile
Truly Plug & Play! No settings, only one cable to plug in! Order MFJ-939I, Icom; MFJ-939K, Ken; MFJ-939Y, Yaesu. Specify Yaesu: FT-100/450/950/ 857/897/1000MP/9000/2000 or other.
Never Obsolete!
If you get a new transceiver, simply order a new Plug and Play cable.
Super Versatile! Works with ALL older rigs, classic transmitters, Flex, Elecraft, Tentec, QRP, others. Auto tune antenna — touch tune button on any MFJ-939I/K/Y for any rig.
2-Year NoMatterWhatWarranty
Price: $ 159.95
“N6XI made a presentation to NCCC featuring the N1MM+ Spectrum Display. It covers why you would want to use a spectrum display and why it is bet... Read more
Product Announcement DXtreme Reception Log X (Version 10.0) DXtreme Software™ has released a new version of its popular logging program for radio moni... Read more
“In today’s episode, I do a side by side comparison of the BTECH DMR-6×2 dual band radio, and the Anytone AT-D868UV dual band DMR HT.... Read more
Event celebrating 450 years of the city of Rio de Janeiro PQ450RIO The city of Rio de Janeiro complete this March / 2015, 450 years of existenc... Read more
The FCC Enforcement Bureau has called on on marketers of light-emitting diode (LED) signs to ensure that these lights comply with FCC rules. Since Mar... Read more
Recent Posts
N6XI presentation to NCCC featuring the N1MM+ Spectrum Display
New Product Announcement: DXtreme Reception Log X
BTECH DMR-6×2 and Anytone AT-D868UV, Side by Side
PQ450RIO – Event celebrating 450 years of the city of Rio de Janeiro
FCC Tells LED Sign Marketers to Abide by Statutes and Rules
News
Amateur Radio Operators Continue Response to Ian
As Hurricane Ian, now a tropical storm, makes its way across Florida, amateur radio operators continue to provide communications support for weather u... Read more
Hurricane Watch Net Update for Ian
The Hurricane Watch Net (HWN) has been in operation since the morning of September 27, 2022, as Hurricane Ian swept across Cuba and headed toward Flor... Read more
FCC Grants an ARRL Emergency Request to Permit Higher Data Rate Transmissions for Hurricane Relief Communications
The Federal Communications Commission (FCC) has granted an ARRL emergency request for a 60-day temporary waiver intended to facilitate amate... Read more
New ICOM IC-PW2 HF Amplifier Reaction With Ray Novak N9JA
ICOM has announced the IC-PW2 HF + 6 meter 1 kw amplifier. Thanks Ray for hanging out with me to do a reaction video! Read more
How Coaxial Cable Improves Antenna Reception
Comparing RG58/U, RG8X, Hyperflex 5, Ultraflex 7, & Hyperflex 10 What’s the difference? Read more
Celebrating The MFJ 50th Anniversary
MFJ is having their 50th Anniversary. I will read a script about MFJ. Watch to learn new and interesting thing about MFJ Read more
Insertion Loss, A/B Amplifier Relay, Why It Is Called An RCA Phono Plug/Jack,
Jim W6LG YouTube Elmer shows how to measure insertion loss on a box he built with a relay inside to select one of two linear amplifiers. He uses a Nan... Read more
![XIEGU G106 [ Video Review ]](https://qrznow.com/wp-content/uploads/2022/09/g106-90x60.jpg)
![XIEGU G106 [ Video Review ]](https://qrznow.com/wp-content/uploads/2022/09/g106-180x120.jpg)
