开云体育

Hi?

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I? do not own a flexradio but I am helping VA2UR with his remote contest station. We want to capture the current transmit band , before starting transmission if possible.

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I am able to capture the transmit frequency when he transmits by subscribing to "sub tx all" and I get messages like this one:

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{"freq":14.20884,"lo":200,"hi":2900,"tx_filter_changes_allowed":1,"artopic":"transmit","ardate":"2025-03-29 14:47:29"}

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Ignore the last 2 fields (artopic and ardate, I added those.

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This tells me in real time the transmit frequency but we would like to know the selected band before tx happens to automatically adjust filters, etc

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I do not own or operate the flexradio myself so I am doing this a bit blindfolded.

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Thanks

Patrick VA2ARZ

I used your example to create the following flow.? ?My function node only has 3 bands defined.? You will need to add all the bands you need.??

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Here is the output:

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I could not sleep last night so I decided to redo the entire flow and ensure it works with the sub transmit messages.? ?The new flow will pass messages that do not have the frequency value.? The following 2 messages passes the band if the frequency is there but if no frequency is present it will just pass the message.??

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I have also added 160 - 6 meters and a GEN band if it does not fit those amateur bands.? ?

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I decided to modify the function node to work with sub TX and Slice.? ?The function node looks for 'freq' or 'RX_frequency' and adds the Band data to the payload object.? ?It will also pass the all objects originally passed to the node.? If 'freq' or 'RX_frequency' is not found then the node will pass the original message.? ?The node can be found here .?

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