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DAX Bandwidth Transmit Control ?
James Nelson
Member ✭✭
DAX Bandwidth TX Control... Where is it ? I see voice bandwidth control is conveniently placed in "radio setup" however does this also set DAX as well ? I am having some comments from other stations asking why they are only seeing 1.5 khz on the DAX that is too narrow for some of our wideband modes such as as Easypal etc.... hence they cannot decode. Outside of the US we use many wideband digital or "fuzzy" modes as they sometimes referred too.
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Answers
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Good question. Does the TX BW settings under the voice tab impact DAX TX as well or only from mic input? It the latter, how can the DAX audio be tailored? 73 Greg1
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I would like to coming back to this topic, just yesterday playing with DIGI and need to comment what excatly DAX TX bandwith depends on the BW settings on the Transmit Control Banel, is it right for DAX ?
This is easy to check, set RX BW for 5kHz in DIGI but TX BW keep as is ex.: up to 3kHz, then try to transmit ex. BPSK63 on the 4kHz audio with control of the signal on the slice.0 -
The low/high cut TX controls are active whether the "audio" is via the Mike, line, BAL or DAX inputs. That is why you need to adjust them to 5 KHz when working WSJT-X., and have them set correctly I'd running outboard mike audio processing software into the rig via DAX. You can create TX profiles for all of your Digi and other DAX modes, too.2
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Hi Ken, thank you for you reply, i would like to touch BW issue a bit more deeply, ex. in case DAX TX BW = 5kHz and start TX on DIGI in PSK125 on ex. 4,5 kHz then other side bands transmission i can see on the PAN that disappear in case transmit on audio freq that below 4kHz.0
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Sergei, are you hearing the other side and signals on another receiver? Or are you only seeing them on the panadapter? OnTX the panadapter sometimes shows signals outside the passband that do not really exist. This is due to internal overload of the pan by the transmitter.0
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I have seen it on the PAN yesterday, but i will check it today on the other RX. You know but it is a bit strange in case PAN overload, in any way will check it.0
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