MFJ-939Y Auto tuner 18-30MHz 200W Yaesu FT-100/450/857/897/950
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Plug & Play Auto Intellituner - 1.8 to 30 MHz - 200 Watts - For Yaesu
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/1200/2000/3000/5000/9000/ 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.
MFJ-939Y Plug & Play Auto Tuner.
The MFJ-939Y comes bundled with the MFJ-5114Y cable and works with the following Yaesu radios out of the box:
- FT-100
- FT-450
- FT-818
- FT-847
- FT-857
- FT-897
- FT-891
- FT-991
- FT-991A
- FT-950
- Any Yaesu radio that supports the Yaesu FC-30 tuner
***This tuner will work with most radios, but it does require a jumper to be moved inside the tuner and purchase of a cable specific for that brand of radio.***
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Autotuner Interface Cables |
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Most Alinco |
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Most Kenwood |
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Most Icom |
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Most Yaesu |
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Yaesu FT-1000MP/2000/9000 |
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Yaesu FT-2000 (through TX REQ input) |
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| Brand: | MFJ |
| Manufacturer's Part Number: | MFJ-939Y |
| Part Type: | Antenna Tuners |
| Product Line: | MFJ 939 Series Automatic Antenna Tuners |
| GigaParts Number: | ZMF-939Y |
| UPC: | 650619108514 |
| Antenna Tuner Type: | Automatic |
| Antenna Tuner Location: | Desktop |
| Weather-Resistant: | No |
| Mobile Whip Tuner: | No |
| Tuner Maximum Power Rating: | 200 watts |
| Frequency Range: | 1.8-30 MHz |
| Lowest Band of Operation: | 160 meters |
| Highest Band of Operation: | 10 meters |
| Tuner Inductor Type: | Switched |
| Tuner Capacitors: | Automatic |
| Tuner Bypass Switch: | No |
| Tuner Control Type: | External |
| Internal Dummy Load: | No |
| Internal Balun Type: | None |
| DC Power Required: | Yes |
| Tuner Width: | 6.500 in. |
| Tuner Height: | 2.875 in. |
| Tuner Depth: | 8.375 in. |
| Notes: | Includes cable for use with most Yaesu radios that support the Yaesu FC-30 tuner, including FT-100/D, FT-857/D, FT-897/D, FT-950, FT-991/A, and FTdx-1200. Note: For additional information, please look at the files under the “Documentation” tab. |
