MFJ-939 Plug & Play 200W Auto antenna Tuner

MFJ-939 Plug & Play 200W Auto antenna Tuner
£179.95 ( £149.96 EXC. VAT )
ESTIMATED SHIPPING COST:
£11.95
In Stock
Shipping to:
Add to cart
Product Information
  • Overview
  • Customer Reviews
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-100/950/ 857/897/1000MP/9000/2000 or other. 

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.

*
we have been made aware that the FT-450 requires tune button has to be pushed in and held for longer than it does on other radios. 




(4 reviews)Write a review
Perfect
Marco|28-12-2018
Great working with ftdx1200 and cobweb, absolute fantastico
Cracking Tuner
John|30-11-2018
I've had mine for a couple of years now and I love it. I've used it on my 991 at home running various wire and vertical antennas and my 7100 in my motorhome tuning loaded whips and wires and it hasn't missed a beat. It tunes extremely quickly and accurately and I have pretty much forgotten it's there. On frequencies I've used previously it clicks once the second I key the mike and it's ready. I'm just about to add another one to my Christmas list so I haven't got to keep flicking dip switches when changing from my Icom to the Yaesu and vise versa as it's a bit of a pain having to get inside the covers every time. When I have the new one I'll be able to just turn the radio on and go. I can't recommend this tuner highly enough.
MFJ-939 ANTENNA TUNER
HUGH|24-06-2017
SUFFICIENTLY IMPRESSED TO BUY A SECOND ONE
MFJ- 939 I
HUGH|22-06-2016
Very fast tuning. Loads my 80m loop on 80m, 40m and all bands up to 10m. Very pleased
Recently Viewed
If you’d like us to let you know as soon as this product comes back into stock, please enter your email address and mobile number below.
Yaesu
Icom