MFJ MFJ-949C - Connecting Coax Antennas; Connecting Random Wire Antenna; Connecting Balanced Line Antenna; Using the MFJ-949 C Tuner

I4e One or two coax fed antenna may be connected to the SO-239
EVakeCOnneet Ot SemMaGKxeds COaxs @andsGoaxne .SyiNOTE:97 Coax 7
and Coax 2 antennas can be connected directly to the
transmitter, amd by-passing the tuner by setting ANT. Sel-
ector to Coax, 13 Diréct orWCoax 2; Direct, respectively.
Sc. A random wire antenna may be connected to the five-way
binding post marked WIRE. The random wire should be long,
high, and as clear of surrounding objects as possible.
For optimum operation, length of random wire antenna sho-
Pideoey judrter wave, Ore longex’ Ofethes operating, frequency.
Do not ground the random wire antenna. Make sure that
the tuner is well grounded to the transmitter. A £ive-
way binding post marked GROUND is provided for ground
connection.
4. A balanced line fed antenna may be connected to the two
five-way binding posts marked BALANCED LINE. A jumper
wire from the WIRE binding post, as indicated by a dotted
line on the MFJ-949C, should be connected to one of the
postS of the BALANCED LINE. This couples the MFJ-949C to
mene bavanced=-Line through: “asls4 balun.
NOTE: Either a balanced line or random wire antenna can
be connected at one time. If a random wire antenna is
used, make sure that there is not a jumper wire between
WIRE and BALANCED LINE.
USING ELHE, ME =949C
The INDUCTOR switch on the MFJ-949C represents a minim-
um Of inductance at positionA and a maximum of inductance at
position bo Less inductance is needed at high frequencies
than at low frequencies for the same impedgnce. The TRANS-
MITTER and ANTENNA controls both represent a maximum of cap-
fetcance at position 6. For optimum operation of the MFJ-949C,
BeaecmeLaisiitter must be Luned for a 50 ohm output impedénce
POLetnewrrequency band in Operation. Set ANT. SELECTOR switch
BomvUMNnyeuOdC LOG Luning up the transmitter.
NOTE: Always tune the transmitter at a low output power.
Pape te puOpecmlyecuning Lhe transmitter, set Antenna
Selector to the desired antenna and tune the tuner for a
minimum SWR as descitbed below. DO NOT readjust the trans-
Names Get OadCdanGgecOnLr1Ol Setting aiter loading it to the 50
ohm load.
de Seueunew RANSMELIER and ANTENNA controls to 3.5 (The
Sapdeteorewate sical)! -Opened )’.
2 Rotate the INDUCTOR control until maximum noise is ob-
Tainead With your transceiver in the receiving mode.
ShA Witeremeransttt tind and wath the INDUCTOR control set the
same as for step 2, alternately adjust the TRANSMITTER
and ANTENNA controls for a minimum SWR. Since the TRANS-