User's Manual

Exhibit 6 page 3 of 33

5.2.7. MUTE Option …………………………………………………………….. 18

5.2.8. LCD Settings Menu ………………………………………………………. 19

5.2.9. Operation in MANUAL Mode …………………………………………… 19

5.3. Tuning of Power Amplifier …………………………………………….. 20

5.3.1. Manual Tuning …………………………………………………………… 20

5.3.2. Tuning Adjustment ……………………………………………………… 22

6. MAINTENANCE ………………………………………………………. 23

6.1. Indication of Fault Conditions …………………………………………. 23

6.2. Fuse Replacement …………………………………………………….... 24

6.3. Tube Replacement …………………………………………………....... 24

6.4. Cleaning ……………………………………………………………...... 24

7. APPENDIX …………………………………………………………….. 25

7.1. Example of connection for ICOM ……………………………………… 25

7.2. Example of connection for ELECRAFT ………………………………… 26

7.3. Example of connection with YAESU …………………………………… 27

7.4. Example of connection with Antenna switch and BPF …………………. 28

7.5. Example of connection USB micro KEYER II

with IC7800 or IC7700 ……………………………………………....... 29

7.6. Example of connection USB micro KEYER II

with another Icom ……………………………………………………….. 30

7.7. Example for connection USB micro KEYER II

with Yeasu or ELECRAFT ……………………………………………. 31

7.8. Example of connection PA with MicroHAM MKII, (MK2R+ etc )

with CI-V output ....................................................................................... 32

7.9. Block Diagram of OM2500A Power Amplifier (USA version)................. 33