Transmit the same signal through both TX ports

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TheGribble
Posts: 1
Joined: Tue Sep 19, 2023 3:32 pm

Transmit the same signal through both TX ports

Post by TheGribble »

I have a signal sampled at 61.44MHz, is there any way to transmit that exact same signal through both TX ports without running in to the USB speed limit? I'm getting this warning:

The total sample throughput for the 2 active channels, 122.88 Msps, is greater than the recommended maximum sample throughput, 80 Msps. You may experience dropped samples unless the sample rate is reduced, or some channels are deactivated.

I'm currently streaming using the BLADERF_TX_X1 format with a single buffer, and it kind of looks like it's working. Is this sending a single copy and transmitting it through both ports or is it duplicating it under the hood?
soliane
Posts: 1
Joined: Tue Aug 19, 2025 9:07 pm

Re: Transmit the same signal through both TX ports

Post by soliane »

If your signal does not require a 61.44 MSps sample rate, you can try lowering the rate so that the total rate is below 80 MSps.
daisymaria
Posts: 1
Joined: Wed Apr 01, 2026 2:15 am

Re: Transmit the same signal through both TX ports

Post by daisymaria »

What’s particularly interesting here is the question about whether using BLADERF_TX_X1 with a single buffer results in duplication or shared transmission. In most SDR architectures, each active channel still requires its own data stream at the hardware level. EaglerCraft Game
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