MFJ MFJ-9200 Instruction Manual Download Page 5

CONNECTIONS  

 

Power Source: 

Use any well-filtered DC power supply or battery pack with output in the 

8-15 VDC range and capable of 1.5-Amps or more. 

DO NOT connect the MFJ-9200 to a 

source exceeding 15 VDC or permanent damage may result.

  

 

Power Connection: 

Use a standard 2.1-mm concentric power plug with plus (+) 

connected to the center and ground (-) connected to the outer sleeve. The MFJ-9200 
has a built-in series diode to protect against accidental reverse-polarity connection, but 
we also strongly recommend 

fusing the plus (+) lead of your power source at 2-A

 to 

provide over-current protection in the event of an accidental short or component failure.  
 

                                              

+

_

2-A Fuse

2.1-mm Plug

 

 

Antenna:

 The antenna jack accepts a standard BNC male connector or BNC-to-UHF 

adapter, as required. Connect any coax-fed resonant antennas with SWR measuring 
under 2:1 directly to the radio. Antennas exhibiting higher SWR or using balanced 
feeders should be matched to 50-Ohm unbalanced line using an external antenna tuner 
(ATU). Never intentionally transmit into high-SWR loads, as extreme mismatch may 
cause the radio to emit out-of-band signals exceeding FCC guidelines. A prolonged 
high-SWR condition may also damage internal components. 
 

Headphones: 

Use any 8 to 32-Ohm stereo headset outfitted with a 3.5-mm stereo plug. 

Note that the radio’s audio output circuit 

is not wired to accept monaural plugs. 

Connecting phones or a speaker wired with a monaural plug will shunt the audio signal 
to ground. To obtain monaural output, use a 3.5-mm stereo plug and leave the ring 
disconnected.  
 

                        

Tip

Ring

Sleeve

Right

Left

Ground

Tip

Ring

Sleeve

Ground

NC

Audio

Stereo Phones

Monaural Phones

 

 

Paddle or Straight-key Wiring: 

Configure paddles with a 3.5-mm stereo plug. Connect 

the dot contact to the tip, dash contact to the ring, and ground to the sleeve. Configure 
manual keys using a monaural plug with the contactor connected to the tip. If using a 
stereo plug with a manual key, connect both the ring and sleeve to ground.  

 

Tip

Ring

Sleeve

Dot

Dash

Ground

Tip

Sleeve

Ground

Contactor

Paddles

Manual Key - Monaural Plug

Tip

Ring

Sleeve

Ground

Ground

Contactor

Manual Key - Stereo Plug

 

 
 
 
 
 
 

Summary of Contents for MFJ-9200

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 2011 MFJ ENTERPRISES INC C Model MFJ 9200 VERSION 1A ...

Page 2: ...sitional 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: ...ion and a switched backlight for the LCD display There s also plenty of receiver overlap for monitoring time signals and international short wave broadcasting The MFJ 9200 runs on any power source between 8 and 15 VDC and draws 40 mA on receive with the display backlight turned off perfect for prolonged off the grid adventures Best of all the MFJ 9200 is the smallest and lightest backpack transcei...

Page 4: ...9 1 18 5 22 0 Trans mit MHz 3 5 4 0 7 0 7 3 10 1 10 1 5 14 0 14 3 5 18 06 8 18 16 8 21 0 21 4 5 Receiver MDS 0 1 uV all bands AGC Threshold 3 to 5 uV all bands Bandwidth Selectable 600 Hz CW 2 5 Hz SSB Audio Output 100 mW 8 Ohm load stereo plug Receiver Current Drain 40 mA no backlight 80 mA with backlight Transmitter Keying Iambic with straight key sensing Auto CQ memory Speed Range 3 45 WPM Tran...

Page 5: ...an external antenna tuner ATU Never intentionally transmit into high SWR loads as extreme mismatch may cause the radio to emit out of band signals exceeding FCC guidelines A prolonged high SWR condition may also damage internal components Headphones Use any 8 to 32 Ohm stereo headset outfitted with a 3 5 mm stereo plug Note that the radio s audio output circuit is not wired to accept monaural plug...

Page 6: ...in Automatic Mode and sends the letter A in code If a straight key is installed when the radio is powered up the keyer senses Manual Mode and sends the letter M Important Note The radio s default is Automatic Mode If a manual key is plugged in after the radio is powered up the radio will transmit a continuous string of dashes until the key is unplugged or the radio is rebooted This condition occur...

Page 7: ...s blocked Push Button Controls Front panel switches control most transceiver functions There are five red pushbuttons plus a momentary push in switch built into the TUNE knob Four switches activate more than one function and require two types of user input The primary switch input is a momentary press The secondary switch input is a two second press and hold The manual instructions are tap for a s...

Page 8: ...se incremental tuning tap RIT to toggle it on and off When active the frequency display shifts to 10 Hz resolution and a dash symbol appears to the right of the last digit The dash symbol signifies zero RIT shift Rotate TUNE clockwise to move above zero shift and note that an up arrow appears on display When tuning below zero shift appears To restore zero shift tune opposite the arrow until the da...

Page 9: ...he finish avoid using harsh chemical cleaners on the cabinet or on plastic parts When backpacking or boating keep the radio dry by sealing it in a Baggie or Pelican case during transport If it should become wet remove the back of the case and allow all circuitry to dry out for an extended period before powering up Do not power up if you observe condensation in the LCD window and avoid heating at h...

Page 10: ... channel to tip left channel to ring ground to sleeve Display Window Segment 1 RX Mode CW or USB LSB supply voltage flashes every 4 seconds Ex 12 6 Segment 2 V VFO mode M Memory mode 1 8 number of memory channel Segment 3 Frequency Display 100 Hz readout normal 10 Hz with RIT Control Switch Functions MEM VFO Tap for M or V Press to enter displayed frequency to memory VFO ÆMEM TUNE ROTATE TO TUNE V...

Page 11: ...ESS CALL AND HOLD FOR S SET SPEED WITH PADDLES TAP TO EXIT ENTER CALL IN CQ MEMORY DEPRESS CALL AND HOLD FOR I ENTER CALL WITH PADDLES TAP TO EXIT CARRIER DEPRESS CALL AND HOLD FOR T HIT DASH TO ACTIVATE AND DOT TO DEACTIVATE TAP TO EXIT ...

Page 12: ...rvice Department at 662 323 0549 or the MFJ Factory at 662 323 5869 4 This warranty does not apply to kits sold by or manufactured by MFJ Enterprises Inc 5 Wired and tested PC board products are covered by this warranty provided only the wired and tested PC board product is returned Wired and tested PC boards installed in the owner s cabinet or connected to switches jacks or cables etc sent to MFJ...

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