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INSTRUCTION MANUAL

CAUTION: Read All Instructions Before Operating Equipment

MFJ ENTERPRISES, INC.

300 Industrial Park Road

Starkville, MS 39759 USA

Tel: 662-323-5869 Fax: 662-323-6551

Model MFJ-207

VERSION 0B

HF 10-160M SWR Analyzer

Содержание MFJ-207

Страница 1: ...All Instructions Before Operating Equipment MFJ ENTERPRISES INC 300 Industrial Park Road Starkville MS 39759 USA Tel 662 323 5869 Fax 662 323 6551 COPYRIGHT 2006 MFJ ENTERPRISES INC C Model MFJ 207 VE...

Страница 2: ...MFJ 207 Instruction Manual HF 10 160M SWR Analyzer...

Страница 3: ...ovided to the customer will not be updated to reflect current data Customers using this manual should report errors or omissions recommendations for improvements or other comments to MFJ Enterprises 3...

Страница 4: ...RS 5 6 THEORY OF OPERATION 7 7 MFJ 207 EASY START INSTRUCTIONS 8 8 IN CASE OF DIFFICULTY 17 9 TECHNICAL ASSISTANCE 17 APPENDICES A ZERO BEATING AGAINST A RECEIVER 14 B FREQUENCY SWR PLOTTING CHART 15...

Страница 5: ...extensive RF filtering ensure solid performance for years to come Fully covered by MFJ s No Matter What one year limited warranty Before attempting to operate your MFJ 207 please read the manual thor...

Страница 6: ...s the desired band to find that SWR fast and easy 4 SWR Meter Direct readout of your SWR from 1 1 to Infinity Frequency Coverage of the Bands NOTE The frequency coverage may vary slightly from this ch...

Страница 7: ...o easily hook up your station s antenna to the MFJ 207 2 FREQ OUT For additional accuracy you can hook up a frequency counter to this phono connector or feed the signal over a short piece of wire to y...

Страница 8: ...uctors as the frequency range is increased The RF is then passed to Q3 and amplified This RF is sensed by D2 and the resulting voltage is fed to U2 where it is amplified and fed to Q4 Q4 varies the vo...

Страница 9: ...n attach it to the ANTENNA connector of the MFJ 207 3 Set the BAND switch to the appropriate band 4 Adjust the FREQUENCY DIAL of the SWR ANALYZER to the frequency at which you want to check the SWR Fo...

Страница 10: ...ct the antenna as discussed in step I 1 or 2 2 Turn the BAND switch to the appropriate band 3 Turn the Frequency TUNE knob until the pointer is on the frequency at which you want to tune the antenna N...

Страница 11: ...dial to the desired operating frequency Adjust the tuner s controls until the MFJ 207 indicates 1 1 SWR nulls 5 Disconnect the MFJ 207 completely and connect the transmitter to the tuner 6 Always turn...

Страница 12: ...CONNECTED IF THE TRANSMITTER INPUT IS ON B THEN TRANSMIT ONLY WHEN THE COAX SWITCH IS IN POSITION B IF THE TRANSMITTER INPUT IS ON A THEN TRANSMIT ONLY WHEN THE COAX SWITCH IS IN POSITION A THE CENTER...

Страница 13: ...at the transmitter is 1 1 then the SWR at the antenna is 1 1 but if there is any SWR at the input to the transmission line there is a higher SWR at the antenna assuming anything but a lossless line L...

Страница 14: ...MFJ 207 Instruction Manual HF 10 160M SWR Analyzer Figure 5 MFJ 207 Schematic Diagram...

Страница 15: ...t connection so you assume all risks in making a direct connection Turn the radio on and tune to the frequency in question For example if you want to check your 40 meter dipole on 7 235 MHz set the ra...

Страница 16: ...MFJ 207 Instruction Manual HF 10 160M SWR Analyzer APPENDIX B FREQUENCY SWR PLOTTING CHART...

Страница 17: ...MFJ 207 Instruction Manual HF 10 160M SWR Analyzer APPENDIX C SWR at Transmitter Vs SWR at Antenna...

Страница 18: ...is not solved by reading the manual you may call MFJ Technical Service at 662 323 0549 or the MFJ Factory at 662 323 5869 You will be best helped if you have your unit manual and all information on y...