MFJ-904/904H Deluxe Travel Tuner
Instruction Manual
4
SCHEMATIC
Page 1: ...t an antenna feed to the appropriate tuner output a COAX FEED to the SO 239 connector labeled ANTENNA b RANDOM WIRE MFJ 904 A random wire may be used by connecting to the center of the SO 239 connector with the supplied plug MFJ 904H Connect to the red binding post labeled WIRE The MFJ 904 904H must be grounded when using a random wire c BALANCED FEEDERS MFJ 904H only to the red binding posts labe...
Page 2: ...ower and indicates SWR The It has 2 power scales which are selected with the front panel push button switch The low power scale reads from 0 30 watts forward and 0 6 watts reflected The high power scale reads from 0 300 watts forward and 0 60 watts reflected SWR is indicated from 1 1 to The MFJ 904 904H has an illuminated meter To provide power for the meter lamp a 12 Vdc supply such as the MFJ 13...
Page 3: ... 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 8 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 t...
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