[Skimmertalk] Attn: Red Pitaya 16-bit users decoding FT8

[John Ackermann. N8UR]

I've seen that a few times with WSJT-X 2.1.0 using an IC-7300 as the radio, so it may not be related to the RPi.

On Jul 30, 2019, 5:33 PM, at 5:33 PM, N4ZR <n4zr at comcast.net> wrote:
>I'm noticing a strange phenomenon using WSJT-X to decode FT8 messages. 
>
>Fairly often, I see multiple spots of the same station in the same 
>transmission period.  Invariably, the highest-frequency spot is the 
>loudest (and always quite strong, typically over 0 dB), and at 100-Hz 
>intervals below it progressively weaker spots of the same station 
>appear.  Here's an example:
>
>My setup:  Carolina windom to Clifton Labs 11 dB preamp to AM and FM 
>broadcast band filters, then to an RP-16.  Software-wise I'm running 
>Demin's SDR receiver to CWSL_Tee to CWSL_SSBWave.exe to WSJT-X.
>
>I'd like to know if anyone else is noticing this.  I've only seen it 
>since I started using the RP-16.
>
>-- 
>
>73, Pete N4ZR
>Check out the Reverse Beacon Network
>at <http://reversebeacon.net>, now
>spotting RTTY activity worldwide.
>For spots, please use your favorite
>"retail" DX cluster.
>
>
>
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