Re: [wsjt-devel] Fox sends "DUPE" instead of "+rpt" in DX pedition mode

2022-11-09 Thread Tsutsumi Takehiko via wsjt-devel
Hi Reino, Thank you for your response. I am glad to see your response is not matter of questions which I asked. Yes, this comes from unavoidable and inherent FT8 down-link budget design i.e. 50% success rate which DX-peditioners should more pay attention to. I was surprised to know recent ped

[wsjt-devel] FT8 7 signal generator

2022-11-09 Thread Bob Larkin via wsjt-devel
I have been doing duty as curator of a DSP library for the Teensy processors.  This has quite a few ham radio classes that now include FT8 T/R based on the work of Karlis Goba and others.  This is all intended for the Teensy 4.x boards that use ARM Cortex-M7 processors. This note is about a ge

Re: [wsjt-devel] Fox sends "DUPE" instead of "+rpt" in DX pedition mode

2022-11-09 Thread Reino Talarmo via wsjt-devel
Hi Take san, It's not you English, but a protocol challenge. The reason for not receiving the RR73 from a fox depends on the S/N at the hound station and the detection probability of various messages. The S/N depends on the propagation, but also strongly on the number of carriers fox is using. Qu