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Tuning Flex 6600 with an external ATU.
I did build a 90 meter long longwire loop to serve as a 160m antenna. It does not tune with my Flex 6600 ATU but it does tune with MFJ-993B ATU connected to my ICOM-7300. I did disconnect the MFJ-993B from the 7300, put it on manual control, and connected it to the Flex 6600. Playing all tricks I did not manage to get the 6600 tune the antenna with the MFJ.
- How to you make the Flex 6600 tune an external ATU in general and MFJ-993B in particular.
- Which types of ATU are fit for use as an external ATU for Flex 6600.
Amos 4X4MF
Comments
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Amos, I use an MFJ 929 which is pretty much the same tuner without the meter. It works very well. I set the tune power in the flex to 10 watts, and click the tune button. I don’t have an internal tuner. Is yours off?
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John
Thank you for coming back.
- Which Flex are you using?
- Is it possible to turn the 6600 ATU off?
Amos 4X4MF
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Hi Amos, Yes, you can turn the ATU off. Click the ATU button on the TX tab of the Radio Panel. The Tune button will still output a signal when clicked. If you use an external automatic tuner, be sure to turn off the internal tuner or they will chase each other looking for a match.
73,
Len, KD0RC
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John
Following your remarks and reading the manual again, I did finally manage to get my 6600 work on 160m with the new antenna.
Thanks again and see you on 160m FT8.
Amos 4X4MF
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Good that you got it going. Stayed in Jerusalem last time, maybe Haifa next time.
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