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Circuit

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4

BX-7300 • 180403

4

Antenna 1

Antenna 2

Antenna 3

Antenna 4

Socket1

Socket 2

Socket 3

Socket 4

Socket 5

Socket 6

Socket 7

Socket 8

Socket 9

Line voltage

Hex code switch

Picture 2. Circuit diagram of the FA -AS antenna selector

Summary of Contents for BX-7300

Page 1: ...Transceivers with one antenna socket For use with up to 4 separate antennas each operating frequency may be automatically or manually selected also with an optional transverter Possibility of using se...

Page 2: ...13 Function test 14 Control via line voltage 14 CAT interface test 15 Configuration 15 Working modes 15 Baud rate 15 Transceiver CIV address 15 Check routine for transverter mode 15 Control power for...

Page 3: ...tions are followed The housing consists of base plate and top lid along with front and rear panels the joining of which is accomplished with the M3 tapped cubiform metal blocks provided Table 1 Techni...

Page 4: ...e 4 BX 7300 180403 4 Antenna 1 Antenna 2 Antenna 3 Antenna 4 Socket1 Socket 2 Socket 3 Socket 4 Socket 5 Socket 6 Socket 7 Socket 8 Socket 9 Line voltage Hex code switch Picture 2 Circuit diagram of t...

Page 5: ...o socket 7 is possible noting that the FA AS has no independent on off switch Operation of the FA AS is carried out with the aid of five push button switches S1 to S5 They lie di rectly on the micropr...

Page 6: ...d to The positive connection is clearly marked on the board and on the component the negative side is usually marked gener ally the side with the shorter wire N B on the written side of the resistance...

Page 7: ...pecial other function Pictures 3 to 7 show various stages of construction and can be used to show orientation For the first IC mount the 5V voltage regulator IC3 This is shown mounted in picture 8 Fir...

Page 8: ...d plug and a twin core cable the DC supply should be assembled The sup plied fuse should be placed in its holder and the bench power supply set to 12V with a current threshold of 0 2A The voltage outp...

Page 9: ...nd M3 6 nuts The sockets must be aligned as much as possible central to the rear panel holes and not touching as shown in picture 16 With the aid of an appropriate spanner the nuts on the cop per coat...

Page 10: ...19 Subsequently when viewing the LED s from the front you must make sure that the longer of the two wires is located to the left From the length of the insulator material the installation height off...

Page 11: ...CAT data circuit with the CI V connection socket Picture 24 The microprocessor must be fitted to the mounting in this position the indentation on the casing serves for the orienta tion With that the m...

Page 12: ...d picture 28 Then the front panel and the rear panel with the fixed ele ments of the main board are screwed together don t forget the three M3 6 with nuts to fix the socket board Finally the whole ass...

Page 13: ...line voltage transmit receive switching operating voltage 13 8V and earth Such plug connectors are available at e g 2 Picture 29 Example of the plug layout of the connecor cables be tween the FA AS a...

Page 14: ...he bicoloured LED s on the front panel having nothing to do with antennas 1 to 4 now serve sepa rately as indicators Immediately after switching on the transceiver the FA AS will also be powered up ov...

Page 15: ...CIV address of the FA AS doesn t match that of the transceiver When the testing of the control by line voltage and CAT in terface is complete the final configuration of the FA AS can be done Configur...

Page 16: ...s checks that the FA AS has a valid line voltage about 2V connected 30m 6m or 4m shouldn t be selected and that the transceiver delivers a valid frequency 1 8 72MHz During the line voltage check ANT 2...

Page 17: ...FA AS can also be reversed in that it may serve one antenna yet several transceivers or receivers Then the an tenna is connected to the TRX socket and the sets to the an tenna sockets Selection is po...

Page 18: ...red green 4 Q1 Quartz 18 432MHz 1 R3 2 4k 1 R13 2 2k 1 R4 R8 R14 R15 R16 R17 4 7k 6 R1 R2 R7 4 7k 1 0 6W 3 R10 5 1k 1 0 6W 1 R18 R19 R20 R21 220 4 R5 R9 R22 10k 3 R6 R11 R12 1k 3 RN1 RN2 8 10k 2 S1 S...

Page 19: ...BX 7300 180403 www funkamateur de 19 Attachments Automatic Antenna Selector Picture A1 Mounting plan of the Automatic Antenna Selector FA AS...

Page 20: ...BX 7300 February 2018...

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