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Sequencer, how to do?
So, lets say you have a PGXL/TGXL or any number of other things, your using FT8 or any of the digital modes. Now you need a sequencer, how would you do that?
Given the PTT signal is provided by the WSJTX software via a USB port to your radio, I can't think of a way to peal off just the PTT signal. Even if you used as old fashioned RS232 now you've lost the audio I guess.
Anyone solve this issue? Had the same problem with an EME setup and had to buy a SSB Electronics very expensive switch to protect the pre amp at the antennas. But, that's not going to work here.
Thanks
Peter
Answers
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Hi Peter, the Flex 6000 radios already do the sequencing. There is a TX delay so that whatever is keyed by TX1 - TX3 can settle before the radio sends RF to the antenna port. That prevents hot switching your equipment.
Are you running something special that requires a more complicated sequencing scheme?
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I’m not using a Flex radio. I’m using Icom radios
Peter
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Ah, ok. Is there a TX delay parameter that you can set?
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The max is not quite enough
Peter
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I would like to recommend we pause the online discussion on this please. I don't want the wrong solution floating around just at the moment until we understand the root cause of his issue. There is a lot of detail not included in this discussion.
W2PP has a support ticket open on this regarding his configuration and as part of that, FlexRadio, who does Level 1 support for 4O3A products is in discussion with the manufacturer of the PGXL and the TGXL. We defer to 4O3A for the next level of support as they are the design authority.
We have escalated to 403A for their guidance as they are the designers and we must follow their recommendations.
FlexRadio is the US Distributor of 4O3A products.
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Mike I should have made this more generalized than I did
However with not much effort I’ve identified two incredibly easy solutions
First you can tell WSJTX to use either RTS or the DTS lines from a serial port for PTT Now I don’t yet know if you need a serial card or if a USB to serial adapter will work
secondly, inside WSJTX under advanced settings they have a baked in TX delay I tested and can confirm that by using this TX delay the PTT line is activated but audio does NOT get sent until after the preset delay
nifty and VERY easy solution for those who need more delay The minimum delay BTW is 100 ms
Peter
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