Re: [digitalradio] Re: ARQ sound card modes

2006-09-13 Thread kd4e
> TKS for all the answers and the adress. >> it requires 20 ppm or better... > 1/50.000, hum it's not reasonnable for a standard PC (more about 1/3000). > 73 Patrick Is the 1/3,000 limit caused by the MS version of windows or is there some other limiting factor? Memory, CPU, buffer size, 64-bit

Re: [digitalradio] Re: ARQ sound card modes

2006-09-13 Thread Patrick Lindecker
Hello Jose, TKS for all the answers and the adress. >it requires 20 ppm or better... 1/50.000, hum it's not reasonnable for a standard PC (more about 1/3000). > In the original protocol, the hardware controller does it it is automatically. In the protocol, the way to refuse the 200 bauds is not

Re: [digitalradio] Re: ARQ sound card modes

2006-09-13 Thread Patrick Lindecker
Hello, The charts for receivers are very useful! Yes something similar for digital modes would be interesting with some columns as: speed in wpm, bandwidth, mode (PSK, FSK...), robutsness (FEC or no FEC correction), average power/peak power ratio, S/N minimum (under gaussian noise), sensitivit

Re: [digitalradio] Re: ARQ sound card modes

2006-09-13 Thread Jose Amador
--- Patrick Lindecker <[EMAIL PROTECTED]> wrote: > Jose, some questions, > > * for Pactor, why do you need a so precise timing It > seems that you need a 1/100,000 precision or better. > This because the RX Pactor modem follows an exact > timing from the beginning of the QSO (after a first > si

Re: [digitalradio] What is this noise?

2006-09-13 Thread Andrew O'Brien
On 9/12/06, larry allen <[EMAIL PROTECTED]> wrote: > > > > > > > > Hi Andy > What is the frequency of this noise.. I mean what frequency within 80 > meters? > Larry ve3fxq > > I have noticed it occasionally on 3717 and 3705. Andy K3UK Skype Me : callto://andyobrien73 www.obriensweb.com www.myspa