Mfj 971 qrp portable antenna tuner, manual, desktop, 200 watts, 16010 meters. Related manuals for mfj mfj 971 tuner mfj mfj 974h instruction manual 11 pages balanced line antenna tuner. Mfj971 qrpantenna tuner manual mfj971 qrpantenna tuner manual. Manual radio communication tuners for sale in stock ebay. Description the mfj971 is a compact 200watt portable tuner mfj qrp transceivers. I had to order a replacement bottom cover because the bottom was not cut level.
It provides a convenient crossneedle type swrwattmeter and features a special. The mfj 939 comes complete with interface cable and programmed. Mfj 991 mfj 994 intellituner automatic antenna tuners instruction manual cable provides power and control between an alinco radio and the mfj automatic tuner. I live in a condo and use a 30 22 gage wire antenna deployed out the window into a palm tree with a variable length counterpoise in the shack. News check out our sale on xpa125b amplifier get one before its too late join our email list to receive your free copy of our mfj 3302, book, 73 dipole and longwire antennas. Second hand mfj971 mfj qrp portable atu radioworld uk. Radio antenna tuner mfj 971 unboxing qrp ham radio. Second hand mfj 971 mfj qrp portable atu, the mfj 971 is the ideal qrp atu to have on hand. Mfj 1204 usb radio interface user manual 3 mfj 1204 cable only part cable termination radio jumper dia. It provides a convenient crossneedle type swrwattmeter and features a special userselectable 6watt range for qrp operation the tmatch tuner covers 1.
Having good service with a mfj 941c for 34 years i decided to upgrade to the 949e which i purchased used for about a quarter of the cost new. Mfj 971 portable antenna tuner modifications the mfj 971 has the potential to be a great portable tuner. The mfj 986 is designed to match 50 ohm output amplifiers, transmitters or transceivers to virtually any antenna. Mfj 949e versa tuner ii 1 mfj 949e versa tuner ii instruction manual general information the mfj 949e is a 300 watt rf output power antenna tuner that will match any transmitter or transceiver to virtually any antenna. The mfj 971 is a compact 200watt portable tuner compatibly packaged with. Apr 08, 2011 the mfj 998rt intellitune rtm is a comprehensive full legal limit remote automatic antenna tuning unit. With their small size, mfj 939 series compact autotuners complement many of todays compact hf transceivers.
Product description the mfj971 is a compact 200watt portable tuner mfj qrp transceivers. I plugged the coax from my radio into the transmitter connector and the antenna coax feed line into the antenna connector going to my wire dipole antenna the instruction manual is not specific at all. Mfj971 qrp portable antenna tuner, manual, desktop, 200. The mfj 901b is mfjs smallest and most affordable 200 watt pep versa tuner. Its designed to match virtually any transmitter up to 200 watts rf power output to almost any antenna.
Peak or average forward and reflected power and swr can be read on the illuminated crossneedle meter. It is a small, compact tuner that has a sensitive swr circuit allowing precise tuning with low power thanks to its 6w fsd setting and it has outputs for coax, wire and balanced. The mfj 971 is a compact 200watt portable tuner mfj qrp transceivers. The mfj949e inductor has 27 turns, 75mm long and 75mm diameter which is about 37h. To extend battery life, the tuner has builtin rfsensing that applies power to the meter electronics only when a transmit signal is applied. You will be best helped if you have your unit, manual and all information on your station handy so you can answer any questions the technicians may ask. Any power supply used with the mfj 249 must be capable of supplying 200ma of current. Mfj mfj971 antenna tuners manual, mfj971 ham radio outlet. I guess mfj wanted to make good, because they sent me two bottoms. All you need is an existing radio, a computer, some free downloadable software, and your mfj 1204. Text passages that could not be reconstructed are marked.
Mfj 971 qrp tuner 1,830 mhz 1,830 mhz classic international. Mfj mfj 971 antenna description mfj 971 mfj hf antenna tuner. The 934 tunes 1040 meters appropriately as does the mfj 971 and 901. Adding on the extra inductance means we have a max inductance of around 27h which allows matching on 1. Dieser text ist in blauer schrift kenntlich gemacht. The mfj971 is a compact 200watt portable tuner compatibly packaged with. It provides a convenient crossneedle type swrwattmeter and features a special userselectable 6w. In fact, the mfj 1204 is easier to set up and use than any other usbinterface on the market. The mfj971 is a compact 200watt portable tuner mfj qrp transceivers. The mfj 998rt lets you rapidly tune almost any unbalanced or singlewire antenna automatically. Mfj manuals all manuals are copies and are madetoorder unless otherwise noted. It has so239 sockets and has terminal posts for balanced lines. The mfj 971 has the potential to be a great portable tuner. This manual has been compiled from the manual downloadable from mfj and the manual from the predecessor model mfj 1278.
Comes with many extra antennae and inside the box shipped with usps. It provides a convenient crossneedle type swrwattmeter and features a special userselectable 6watt range for qrp operation. Mfj 971 qrp portable antenna tuners manual antenna tuners. The mfj971 is a compact 300watt portable tuner mfj qrp transceivers.
Mfj enterprises inc,ameritron,hygain,hygain,cushcraft,vectronics,mirage, mfj, mfj enterprises,antenna,radio,ham radio,amateur radio,tuner,analyzer,starkville,amplifier. The rear panel has so239 plus random wirebalanced line output. View and download mfj 974b instruction manual online. It comes in a green protective box the picture taken of that is not coming out very bright. Mfj 971 portable qrp tuners are also a perfect mate for any of todays ultracompact ssb radios. Generell sollen antennentuner stets mit reduzierter sendeleistung etwa 20 watt abgestimmt werden. Mfj971 portabel antennen tuner bis 300 watt sendeleistung. It is a small, compact tuner that has a sensitive swr circuit allowing precise tuning with low power thanks to its 6w fsd setting and it has outputs for coax, wire and balanced feeder although i wont talk about the mfj. Mfj 971 qrp portable antenna tuners are compact 200 watt portable tuners and a perfect match for mfj qrp transceivers. Modifikation des mfj971 portabletuner mit einer bypassschaltung. Mfj 9201 description hide custom 12 position inductor switch, tunebypass switch, antenna and transmitter capacitors, bnc feedpoints for antenna and transmitter connections. It incorporates a cross needle swr meter and displays forward or reflected power and swr simultaneously. Is the voltage balun better then a guanella configuration for balanced line applications or should i modify it to use on my doublet antenna. The mfj 1204 puts you in touch with ham radios digital revolution without complex wiring or setup procedures.
Use 5 watts for initial tuning, then up to 100 watts after swr is reduced via tuning. Jan 15, 20 i just received my mfj 971, i saw that internally there is a 4. This was supplemented as far as possible with texts from the older manual. Mfj 974b instruction manual pdf download manualslib. Mfj 962d instruction manual 7 using the mfj 962d warning. Mfj 1204pa mfj 5704p 4pin round mic connector any with 4pin connector with cable included number mfj 1204p8 mfj 5708p 8pin round mic connector ic728, 735, 738, 746pro, 751 756pro, 761, 765, 775, 781 a. Page 8 mfj 941e versa tuner ii you can also send questions by mail to mfj. Mfj 939 series automatic antenna tuners have been designed for todays home, portable, or mobile stations. There is a special userselectable 6watt range for qrp operation. I like the large meter that is also back lit and the built in dummy load. The mfj971 inductor has 17 turns, 43mm long and 66mm diameter which is about 17h. The mfj971 is also a perfect mate for any of todays ultracompact ssb radios.
Harmonics and loss of signal strength can be the result. I have had issues with rfi in the shack especially the computer. The mfj 971 is also a perfect mate for any of todays ultracompact ssb radios. Dieser wurde soweit wie moglich mit texten aus dem alteren manual erganzt. The mfj 986 differentialt 3kw tuner uses a differential capacitor to make tuning easy. For product manuals first search for your item by entering the item number into the search box and pressing enter secondly select the item that you want next click the product manuals tab lastly select download product manual congratulations you should now see a downloaded. Mfj 931 instruction manual artificial rf ground installing a ground in the wrong fashion, such as mistuning and bad connections, can also generate additional rfi. Mfj971 description hide the mfj971 is a compact 300watt portable tuner mfj qrp transceivers. Supported alinco radios are dx70, dx77, and any alinco radio that supports the alinco edx2 tuner. The mfj 994brt and mfj 998rt are remote versions of the current mfj 994b 600 w and mfj 998 1500 w switched lnetwork desktop auto tuners.
Mfj 993b intellituner automatic antenna tuner instruction manual 20052012 mfj enterprises, inc. The mfj 971 is a compact 300watt portable tuner mfj qrp transceivers. In any conventional t network tuner, maximum power handling and the smoothest tuning occurs when the capacitance in the network is as large as possible. Mfj 962d instruction manual 4 battery, make sure the snap clip is anchored solidly to the battery holder where it was wedged for shipping. It gives you superb current balance throughout its very wide matching and frequency range. They may also be used as standalone automatic antenna tuners for any transceiver that has an output power of 2200 watts ssbcw from 1. The mfj 249 requires between 8 and 18 volts for proper operation. They provide a convenient crossneedle type swrwattmeter and feature a special userselectable 6watt range for qrp operation. Page 1 mfj 971 qrp portable antenna tuner general description. Mfj 969 deluxe versa tuner ii antenna tuners are 300 watts pep ssb full featured roller inductor antenna tuners with features that include. Mfj 974hb 10160m, 300w balanced line tuner the mfj 974hb is a fully balanced true balanced line antenna tuner. Peak and average forward power, reflected power, and swr are displayed on the mfj 986s illuminated crossneedle meter. I happen to hate the auto tuners preferring manual ones.
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