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Is a dual receive audio in phase lock?
KF4HR
Member ✭✭
Among other things, I'm considering using my 6700 for EME by feeding the 2M signals from both slices into the WSJT program. Assuming I set up two slices on 2 meters, does anyone happen to know if the signals (IQ) from both these slices would be phased locked?
1
Answers
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Hi KF4HR,
A while back I asked a related question here:
https://community.flexradio.com/flexradio/topics/map_65_adaptive_polarity
Since then, Diversity reception has been added, so wonder if this has been improved?
73, Bob, N7ZO1 -
Thanks Bob. I see your question was posted 2 years ago. I'll try to contact Steve about this issue to see if there has been any progress in this area. I am just getting started building a 2M EME station. It sure would be nice if I my 6700 performed the functions of a LinkRF IQ+ Dual Receive Radio.
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Yes, eliminating the need for an IQ+ is my goal too. But getting two IQ streams in phase is only part of the problem. As Paul, RN3A, noted in the old thread:
Since you can currently only select one sound device in Map65,"Flex needs to create an additional sound card interface, which will carry 2 IQ streams from 2 pans, supporting synchronous RX, or Joe (in Map65) needs to add a second RX IQ channel to support X-pol this way."
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Interesting Bob. Being brand new to the Flex world I didn't realize there's only a single sound card interface.
Given the slim EME Flex audience I'm guessing Flex engineering isn't going to give these mods much (any?) priority, but I guess it wouldn't hurt to ask again. It seems a shame the 6700 comes so close.
Butch
KF4HR
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Just to be clear, the single sound card device limit is in MAP65. A Flex 6700 has four IQ sound card devices each containing one IQ "stereo" pair, whereas MAP65 needs two IQ pairs (a total of four channels) on one sound card device.
I too would love to hear an update from Steve.1
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