MFJ MFJ-902B Instruction Manual Download Page 5

MFJ-902B Instruction 

Manual 

8.  After the lowest reflected power (or SWR) is obtained in step 6, use the 

INDUCTOR switch to reduce the inductance one switch position (L is the 
lowest inductance setting).  Adjust the TRANSMITTER and ANTENNA 
controls for the lowest SWR.  Continue this process until the lowest SWR 
cannot be repeated, then use the INDUCTOR switch to increase the 
inductance by one switch position (A is the highest inductance setting).  
Tune for lowest SWR. 

 

WARNING:  Never transmit while changing the INDUCTOR switch. 

 

Note: Always use as little inductance as possible.  Step 7 minimizes the 

inductance and maximizes the capacitance. 

9.  After a low SWR is obtained, the transmitter power may be increased to any 

value up to 150 watts. 

 

WARNING:  Do not exceed 150 watts output.  You will damage the tuner! 

 

TECHNICAL ASSISTANCE 

 
If you have any problem with this unit first check the appropriate section of this 
manual.  If the manual does not reference your problem or your problem is not 
solved by reading the manual you may call 

MFJ Technical Service

 at 

662-323-

0549

 or 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 questions by mail to MFJ Enterprises, Inc., 300 Industrial 
Park Road, Starkville, MS 39759; by Facsimile to 662-323-6551; or by email to 
[email protected].  Send a complete description of your problem, an 
explanation of exactly how you are using your unit, and a complete description 
of your station. 

 
 
 
 

 

 

Summary of Contents for MFJ-902B

Page 1: ...AUTION 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 MFJ 902B VERSION 1A ...

Page 2: ...s 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 using this manual should report errors or omissions recommendations for improvements or other comments to MFJ Enterprises 300 Industrial Park Road Starkville MS 39759 Phone 662 323 5869 FAX 662 323 6551 Business hours M F 8 4 30 CST ...

Page 3: ...DOM WIRE MFJ 902 A random wire may be used by connecting to the center of the SO 239 connector with the supplied plug The MFJ 902B must be grounded when using a random wire 4 Connect your tuner and transmitter to a good earth ground OPERATION This tuner has a BYPASS TUNE switch located on the back of the unit Simply place the switch toward the BYPASS labeling to completely bypass the tuning circui...

Page 4: ...dling and widest bandwidth The MFJ 902B covers 80 through 6 meters Do not operate on 160 meters Tuning Procedure 1 Position the TRANSMITTER control to 5 on the corresponding scale 2 Position the ANTENNA control to 0 on the corresponding scale 3 Place the BYPASS TUNE switch in the TUNE position 4 Place the 6M HF switch in the 6M or HF position for 6 Meters or HF operation 5 Apply just enough power ...

Page 5: ...wer may be increased to any value up to 150 watts WARNING Do not exceed 150 watts output You will damage the tuner TECHNICAL ASSISTANCE If you have any problem with this unit first check the appropriate section of this manual If the manual does not reference your problem or your problem is not solved by reading the manual you may call MFJ Technical Service at 662 323 0549 or the MFJ Factory at 662...

Page 6: ...MFJ 902B Instruction Manual 6 NOTES ...

Page 7: ...vided 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 601 323 5869 5 This warranty does not apply to kits sold by or manufactured by MFJ Enterprises Inc 6 Wired and tested PC board products are covered by this warranty provided only the wired and tested PC board product is returned Wired and t...

Page 8: ...MFJ 902B Manual Version 1B Printed In U S A 300 Industrial Park Road Starkville MS 39759 ...

Reviews: