Increasing USB bandwidth
Increasing USB bandwidth
Hi,
Is there a way to increase the USB bandwidth? I'm looking to decode VDL2 an I'm unable to get the bandwidth beyond about 10k.
Thanks!
Is there a way to increase the USB bandwidth? I'm looking to decode VDL2 an I'm unable to get the bandwidth beyond about 10k.
Thanks!
Last edited by KC2Land on Thu Jan 01, 1970 12:00 am, edited 0 times in total.
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Re: Increasing USB bandwidth
Are you try to set DSB or USER. Bandwith is small over 11kHz.KC2Land wrote:Hi,
Is there a way to increase the USB bandwidth? I'm looking to decode VDL2 an I'm unable to get the bandwidth beyond about 10k.
Thanks!
Last edited by Hombre on Thu Jan 01, 1970 12:00 am, edited 0 times in total.
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Re: Increasing USB bandwidth
I'm trying to increase the bandwidth to 25khz in USB mode. The maximum I can expand it to is around 12k. Is there something I'm missing or is this a current limitation of SDRUNO?
Last edited by KC2Land on Thu Jan 01, 1970 12:00 am, edited 0 times in total.
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Re: Increasing USB bandwidth
There is limitation because for SSB 12kHz is over enough.
Last edited by Hombre on Thu Jan 01, 1970 12:00 am, edited 0 times in total.
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Re: Increasing USB bandwidth
Well, one can see things different.Hombre wrote:There is limitation because for SSB 12kHz is over enough.
WiNRADiO allows 64 kHz (!) USB bandwidth in the G3xDDC models.
ELAD allows 24 kHz, same as SDRConsole.
Sometimes this can be useful decoding certain digital modes.
Other SDRs alas only allow 3.6 or maybe 7 kHz. You can't even decode digital DRM radio (10 kHz needed) with these.
73, Heinrich
Last edited by DanubeBCL on Thu Jan 01, 1970 12:00 am, edited 0 times in total.
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Re: Increasing USB bandwidth
Examples of wideband digital signals:
OTH Radar: 28KHz
CODAR: up to 30MHz (that's NOT a typo...it is up to 30 MHz), but typically 50KHz
Multitone paging: 12.5KHz - 25KHz
PLUTO OTH Radar: 20KHz
Sepehr OTH Radar: 60KHz - 1MHz
CTCSS: 5KHZ - 30KHz
DAB (Digital Audio Broadcasting): 1.5MHz
The Emergency Alert System: 5KHz - 30KHz
EDACS (Trunked Radio): 12.5KHz - 25KHz
ERMES: 25KHz
So, there are a few examples of why >10KHz bandwidth could be used. Most of the examples I listed are radars that cannot be decoded. However, there are a few digital signals that can be decoded, if the bandwidth is appropriate. I play with digital signals a lot, and would love to see at least 25KHz bandwidth, either on USB/LSB or a DATA mode (e.g. Simon's SDR Console v2).
Best regards - David, AG4F
OTH Radar: 28KHz
CODAR: up to 30MHz (that's NOT a typo...it is up to 30 MHz), but typically 50KHz
Multitone paging: 12.5KHz - 25KHz
PLUTO OTH Radar: 20KHz
Sepehr OTH Radar: 60KHz - 1MHz
CTCSS: 5KHZ - 30KHz
DAB (Digital Audio Broadcasting): 1.5MHz
The Emergency Alert System: 5KHz - 30KHz
EDACS (Trunked Radio): 12.5KHz - 25KHz
ERMES: 25KHz
So, there are a few examples of why >10KHz bandwidth could be used. Most of the examples I listed are radars that cannot be decoded. However, there are a few digital signals that can be decoded, if the bandwidth is appropriate. I play with digital signals a lot, and would love to see at least 25KHz bandwidth, either on USB/LSB or a DATA mode (e.g. Simon's SDR Console v2).
Best regards - David, AG4F
Last edited by dsalomon on Thu Jan 01, 1970 12:00 am, edited 0 times in total.
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