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Youkits MT1 QRP Long Wire Antenna Tuner

MT1 is designed for the high-impedance long wire antenna, which can be used in the range of
10m to 40m, with the power handling of about 10W ( power handling peak is about 20W),
consisting of two parts, namely LC matching circuit and the VSWR power detection circuit .

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Summary of Contents for MT1 QRP

Page 1: ...igned for the high impedance long wire antenna which can be used in the range of 10m to 40m with the power handling of about 10W power handling peak is about 20W consisting of two parts namely LC matc...

Page 2: ...1 223P dual capacitor S1 1 2 2 toggle switch S2 1 1 12 band switch Meter 1 500uA meter T1 magnet ring 1 FT37 43 magnet ring black L1 magnet ring 1 T68 2 magnet ring red Antenna pedestal 1 BNC antenna...

Page 3: ...diate tap Production of L1 Cut the red 24 enameled insulated wire about 1m long and wind on T68 2 magnet ring then tap for every three loops totaled12 taps with 10 tapped ones and the top the end lead...

Page 4: ...n be put within Solder foot A with the 30mm 24 enameled insulated wire Put the winded magnet ring L1 on the S2 and connect the top and the end part of the winded wire on foot 1and foot 2 of S2 respect...

Page 5: ...Installing and welding The intermediate tap of T1 should be welded in the bonding pad next to R1 Cut the 24 enameled insulated wire for about 30mm long with one end through T1 and welded on the pad u...

Page 6: ...Install the chassis Install the BNC seat and two binding posts in the corresponding position on the cabinet Fix the header and PCB with screws...

Page 7: ...ositive and negative terminals of the meter are connected to the and of PCB respectively Install S2 L1 and C5 on the chassis Connect PCB s OUT pad with the S2 s 12 foot by using the 24 enameled wire a...

Page 8: ...ldered to 12 foot of S2 3 Two fine tuning capacitor of duel capacitor C5 must be tuned to the position of minimum capacity 4 as the above picture shows C5of the kit has been tuned to the position of m...

Page 9: ...ation of the length of the antenna which should not be close to the half wavelength and the integer multiple of the half wavelength of the used frequencies An eight meter antenna is chosen for 7 MHz a...

Page 10: ...Antenna is about 8 meters GND us about 4 8 or 9 6 meters long YouKits...

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