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INSTRUCTION MANUAL

CAUTION: Read All Instructions Before Operating Equipment

MFJ ENTERPRISES, INC.

300 Industrial Park Road

Starkville, MS 39759 USA

Tel: 662-323-5869 Fax: 662-323-6551

C OPYRIGHT 2012 MF J E NTERP RIS ES , INC.

Model MFJ-266C

VERSION 2A

Содержание MFJ-266C

Страница 1: ...UTION Read All Instructions Before Operating Equipment MFJ ENTERPRISES INC 300 Industrial Park Road Starkville MS 39759 USA Tel 662 323 5869 Fax 662 323 6551 COPYRIGHT 2012 MFJ ENTERPRISES INC C Model...

Страница 2: ...mer regulations technical manuals documents positional handbooks or other official publications The copy of this manual provided to the customer will not be updated to reflect current data Customers u...

Страница 3: ...d Accuracy 7 5 4 Calibration Plane Error 8 5 5 Sign Ambiguity j 8 6 0 Antenna Measurements 9 6 1 Antenna Connectors 9 6 2 SWR 9 6 3 Measuring SWR 9 6 4 SWR Bandwidth and Resonance 10 6 5 Antenna Tunin...

Страница 4: ...a 2 dBm RF signal that may be used to check receivers networks amplifiers and antenna patterns Operating range is HF 1 5 68 MHz in six HF bands VHF 108 230 MHz continuous coverage UHF 305 490 MHz con...

Страница 5: ...sideways to unlatch and then lift vertically to expose the cells Slide and Lift When replacing old batteries be sure to follow the manufacturer s environmental guidelines for safe disposal For longest...

Страница 6: ...connector s center pin 2 1 mm Important Warnings Reverse polarity or excessive voltage could permanently damage the MFJ 266C To avoid damage 1 Never connect an AC transformer or positive ground power...

Страница 7: ...z frequency counter Note that the BAND SELECT switch B must be up in the HF position for the counter mode to activate If switch B is down an error message will prompt you to change the band setting to...

Страница 8: ...e This signal is a 2 dBm continuous carrier When using the analyzer as a signal source the operating range band and frequency are selected in the normal manner and will be displayed on the screen see...

Страница 9: ...VHF and UHF ranges Follow the up down position prompts shown in the table printed next to the buttons to select ranges A B BAND SELECT BAND A B HF X VHF UHF Counter X X means the VHF UHF switch can be...

Страница 10: ...is powerful enough to overcome any lack of front end selectivity and override stray pickup However a powerful transmitter located nearby could inject enough RF energy into the detector to disrupt rea...

Страница 11: ...nected However if you wish to know the antenna s actual feedpoint SWR for documentation purposes the analyzer should be connected directly to the feed point through a short pigtail Calibration plane e...

Страница 12: ...ribute significant mismatch to your measurements Finally when installing N male connectors on patch cables and feedlines pay close attention to pin depth If the tip of the connector pin extends more t...

Страница 13: ...s Note that minimum SWR is sometimes wrongly confused with resonant frequency The technical definition for resonance is the frequency where inductive and capacitive reactance cancels leaving a purely...

Страница 14: ...the need to transmit test signals over air Simply connect the analyzer to the tuner input radio side through a short patch cable Select the Analyzer mode set up the Band and Tune for the desired frequ...

Страница 15: ...int but for best common mode rejection a Guanella style balun wound on a ferrite core is recommended 7 0 ADVANCED FUNCTIONS Here are some of the MFJ 266C advance functions Note that some of these proc...

Страница 16: ...nt for testing filters mixers low power amplifier stages and for checking antenna patterns when a range antenna is connected to the analyzer output The stimulus generator may also be used for producin...

Страница 17: ...e length at the stub s intended operating frequency For 1 4 in inches 2951 MHz For 1 4 in feet 246 MHz For 1 2 in inches 5902 MHz For 1 2 In feet 492 MHz Next multiply the free space length times your...

Страница 18: ...thin the limits of Band E s tuning range Other lengths could be used Shorter stubs will yield poorer accuracy and long ones may needlessly waste useful cable 7 8 Testing RF Transformers Broadband HF m...

Страница 19: ...ide R1 R2 25 for 1 1 baluns R1 R2 100 for 4 1 baluns Using the Tune and Band controls B C Balun MJ 266 A Short Test Lead R1 R2 1 Sweep the balun for SWR with the test lead disconnected from the load 2...

Страница 20: ...utton for Counter Mode Up button for Antenna Analyzer Mode Counter Mode Screen Fg f 010 000 MHz REF FS 100mV Set Gate Speed Up Fast Down Slow Incoming Signal Frequency Readout Relative Field Strength...

Страница 21: ...F X VHF UHF Counter X HF 1 5 71 MHz VHF 85 185 MHz UHF 300 490 MHz 2 Press Up Down to Select HF Band BAND MODE SELECT Up Down ANT Counter Bk Lite Tap to STEP through bands Press to SCROLL through band...

Страница 22: ...the MFJ Factory at 662 323 5869 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 You can also send...

Страница 23: ...er must be provided to cover postage and handling 4 This warranty is NOT void for owners who attempt to repair defective units Technical consultation is available by calling 662 323 5869 5 This warran...

Страница 24: ...MFJ 266C Manual Version 2A 300 Industrial Park Road Starkville MS 39759...