BW Filter shift?

[KG7YSX]

Is there a component I can tweak that will shift the bandwidth filter up the band? My filters seem to be centered a little low for digimodes on all bands (see photo). I've seen the videos about optimizing filters for efficiency, but that looked more like a filter involved with transmission.

Thanks.

[dl6sez]

Hello OM,

no you can't there is no component it is all digital by Atmega328.

73 de Chris

[KG7YSX]

Hello OM,

no you can't there is no component it is all digital by Atmega328.

73 de Chris

Thanks. Do you know if this is normal for the filter to be off a bit like that? I'm just curious if this is a defect, and if I should exchange it for a new device.

If anyone could check their trusdx waterfall on vara with a narrow BW, I would appreciate knowing what the BW filters look like on other people's trusdx's.

[KG7YSX]

OK, a guy on another forum took a photo of his, and it is the same. So it's possible that this is normal.

[Constrainted]

Hey, I recognize that screenshot!

To achieve success with Vara HF on truSDX I set the filter to 3k and I paid very close attention to the setting in Menu 8.3 Ref Freq. Even so, sometimes I still needed to adjust the VFO +/- to get the signal within the 500Hz Vara HF modem window. The other station's VFO can be off frequency, too.

73 Constrainted

[KG7YSX]

Hey, I recognize that screenshot!

To achieve success with Vara HF on truSDX I set the filter to 3k and I paid very close attention to the setting in Menu 8.3 Ref Freq. Even so, sometimes I still needed to adjust the VFO +/- to get the signal within the 500Hz Vara HF modem window. The other station's VFO can be off frequency, too.

73 Constrainted

Haha good to see you. I've been running a wide open 4k filter with decent success. For the narrow band winlink stations, I am able to make 2k4 work, but there's no noticeable benefit that I can tell. I definitely have degraded performance if I use anything smaller than 4k for js8. Thank you again for your help.

[Constrainted]

Thanks for sharing your experience. That was a great tip about the polling interval setting for JS8call.

73 Constrainted