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TOPIC: Stealth Loop by I3VHF working with ATU and SunSDR2 DX

Stealth Loop by I3VHF working with ATU and SunSDR2 DX 15 Jun 2021 19:02 #1

  • LA3QMA
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Using SunSDR2 DX with the stealth loop from I3VHF.
www.ciromazzoni.com/the-stealth-loop-by-i3vhf

Upgrade the ATU to v4.0.9
Connect null modem cable to the ATU and computer
Configure ATU to use CAT MODE 3
In SunSDR CAT menu enable ECATv1

Now the loop is tuning either by FULL AUTO, SEMI AUTO or DISABLED depending on what you want.

73 de LA3QMA
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Stealth Loop by I3VHF working with ATU and SunSDR2 DX 19 Sep 2021 18:37 #2

  • LA3QMA
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Made a program so that you can use EESDR3 or EESDR2 with TCI:
drive.google.com/drive/folders/1ZQJcE-nDYPbRyCYQspEdQ13BOoblmokO?usp=sharing

For linux and windows
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Stealth Loop by I3VHF working with ATU and SunSDR2 DX 30 Sep 2021 19:00 #3

  • LA3QMA
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To automatic tune when changing frequency was probably not the best solution.
The new version now require that in EESDR you press TUNE and then de-select it.
When the tranceiver goes out of TUNE mode the ATU for the StealthLoop starts tuning.

This way its not possible to TX when the ATU starts as this can hurt your ATU.
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