MFJ MFJ-949C - General Information; SWR and Wattmeter Operation; Antenna Selector Functionality; Installation of MFJ-949 C

MFJ-949C_ DELUXE VERSA TUNER II INSTRUCTIONS
GENERAL INFORMATION e@
The MFJ-949C is designed to match virtually any transmitter to al-
most any antenna, including dipoles, inverted vees, verticals, mobile
whips, beams, random wires, and others fed by coax lines, balanced
lines, or a single wire. A 1:4 balun is built in for connection to
balanced lines. An sSntenna selector switch provides versatile antenna
selection. A 50 ohm dummy load is built in for easy transmitter tuning.
The MFJ-949C will handle up to 300 watts of RF output power from the
transmitter from 160 through 10 meters. The MFJ-949C employs a cross
needle meter so forward power, reflected power, and SWR can be read
simultaneously.
THE SWR/WATTMETER
The meter on the MFJ-949C can be used with the tuner or by it-
self. To use the meter without the tuner, set the ANTENNA SELECTOR
to Coax 1 Direct or Coax 2: Direct. The MFJ-949C utlilizeswamc losses
meter so FORWARD power, REFLECTED power, and SWR can pie multane-
ously. The range for both FORWARD and REFLECTED power is either 30
watts or 300 watts. <it willl read SWR of 2 1sto >:
To read transmitter RF output power, set the desired range of either
30 watts or 300 watts. Transmit a steady carrier and read the FORWARD
power on the FORWARD scale and the REFLECTED power on the REFLECTED
scale. SWR is indicated by the crossing point of the two needles.
While transmitting, read SWR from the,SWR line nearest the crossing &
point. The» meter-lamp can be power, by a 12V DC source. Use a)255mm
plug with the tip of the plug connected to the positive.
The ANTENNA SELECTOR switch alows selecting two coax antennas
either direct/of through the tuner, a balanced line atnenna or wire
antenna or a built-in 50 ohm dummy load. The 50 ohm dummy load
is rated at 300 watts. CAUTION: DO NOT continously key for more than
2 minutes at a time. DO NOT operate the antenna switch while trans-
mitting. DO NOT use the MFJ-949C for over 300 watts of RF output
power, even in the Direct Coax or Dummy Load positions.
INSTALLATION
Ie. Install the MFJ-949C between the transmitter and the antennas.
A coax line is connected to the transmitter andthe 50-27 > 7coax
connector marked TRANSMITTER on the tuner.