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MONTAGE

INSTALLATION

draft / preliminary / final

public (B)

2007-06-26

M70101-0e-ID-B.doc

OBID i-scan

®

ID ISC.MAT-B

Manual Antenna Tuner

(English)

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Содержание OBID i-scan ID ISC.MAT-B

Страница 1: ...MONTAGE INSTALLATION draft preliminary final public B 2007 06 26 M70101 0e ID B doc OBID i scan ID ISC MAT B Manual Antenna Tuner English...

Страница 2: ...avoided we are always grateful for your useful tips The instructions given in this manual are based on advantageous boundary conditions FEIG ELECTRONIC GmbH does not give any guarantee promise for per...

Страница 3: ...on 7 4 1 Circuit board dimensions and installation 7 4 2 Pin headers and HF connection sockets 8 4 3 X2 X3 Connecting the antenna conductor 9 5 Operating elements 10 5 1 Jumpers JP9 and JP10 for setti...

Страница 4: ...n of a device Repairs may only be executed by the manufacturer Installation operation and maintenance procedures should only be carried out by qualified personnel Use of the device and its installatio...

Страница 5: ...f 13 56 MHz and an input impedance of 50 In conjunction with an antenna conductor e g aluminum strip CU tube or the outer jacket of an RG213 cable it is very simple to construct antennas in various si...

Страница 6: ...nna conductors Outer jacket of a coax cable e g RG58 RG59 RG213 RG214 Aluminum strip 20 x 2 mm Copper tube 18 mm The following components are required for tuning the antenna Impedance meter or SWR met...

Страница 7: ...ion Three 3 2mm mounting holes are provided on the circuit board for attaching the Manual Antenna Tuner see Fig 1 The antenna loop is attached to X2 and X3 using M3 threaded inserts Fig 1 Dimensions a...

Страница 8: ...Pin headers and HF connection sockets Fig 3 shows all headers J1 to J3 as well as the HF connection sockets Fig 3 Headers and HF sockets The HF cable is connected through the SMA socket X1 as shown in...

Страница 9: ...conductor Fig 6 an antenna constructed of coax cable RG214 and Fig 7 a copper tube antenna Fig 5 Antenna connection aluminum strip Fig 6 Antenna connection coaxial cable RG214 Fig 7 Antenna connection...

Страница 10: ...and JP10 are used to set the antenna Q using the series resistors For setting the Q see Table 1 The following table shows the respective maximum permissible HF power for various Q settings and variou...

Страница 11: ...1 C1 2 and C2 and a transformer ratio 2 configured as a balloon for balancing the antenna current The capacitors are divided symmetrically into C1 1 and C1 2 and must be of equal value An equivalent...

Страница 12: ...The inductance of an antenna can be determined approximately from the geometric dimensions of the antenna It should lie in a range of 0 6 H to 2 5 H in order to be able to tune it using appropriate c...

Страница 13: ...rroundings It depends on the desired read range and the national RF regulations In the standard setting the series resistance is 3 The series resistors can be enabled and disabled using jumpers or a s...

Страница 14: ...of 1 8 cm diameter copper tube and a series resistance Rseries of 3 Ohms Following are 3 examples Tab 3 Inductance and compensation capacitors for 3 square antennas s cm LP nH C1 1 C1 2 pF C2 pF 30 70...

Страница 15: ...dure for tuning an antenna in individual steps 1 Connect tuner board with antenna attached to impedance analyzer 2 At C1 1 and C1 2 enable the same capacitance of 15pF or 30pF 3 Change capacitance C2...

Страница 16: ...oth steps until the SWR is 1 3 Note the following when tuning the antenna The curve for resistance R has two points where the 50 line is intersected For very small values of R R 10 the capacitance C2...

Страница 17: ...e tuning boards Tuning the antenna using an SWR meter is also possible according to the same procedure but is much more difficult since there is always only one measured value SWR instead of R X avail...

Страница 18: ...RG58 Antenna conductor connection Double sided solder surface with hole for screw attachment M3 screw Antenna parameters Transmitting and receiving frequency Impedance Inductance tuning range Q factor...

Страница 19: ...ia 92083 USA RadioShack CB High Frequency Ham Power SWR Meter 3 30 MHz 210 0534 Supplier Radio Shack USA www radioshack com 2 Antennen Analyzer MFJ HF UHF SWR Analyzer Model MFJ 259B 1 8 170 MHz Suppl...

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