> > The advantage of ALE-400 ARQ is the error-free throughput. > > Just FYI. > > Tony -K2MO >
However, if ALE-400 ARQ is getting through with error free throughput, what are the chances that Olivia or Thor or some faster mode is getting through with much faster throughput and a only a few errors ? Other than a wider bandwidth, the other mode may turn out more efficient. If using something like Olivia , and my received text from K2MO looks like this on my screen K3Uk de KMO . OK Andy az rey6fs OK and you h6tajl holding steyy. Do you want to QSY to 14x8h ? and via ALE400 ARQ it looks like K3Uk de K2MO . OK Andy all received OK and your signal holding steady. Do you want to QSY to 14077 ? Then the keyboarding will be worth the ARQ investment. Now that RS ID is becoming de rigeur , ARQ methods in Multipsk, WINMOR, and FLDIGI common place , and your path simulations are becoming a standard reference among digital mode enthusiasts, I'm waiting for a development where some sort of hand shake or RS-ID initiation at the beginning of a QSO establishes the current SNR. Then on your screen up pops a messages that says... "based on the SNR of -11dB THOR11 is recommended, do you want to switch " ? or "based on the SNR of -15dB PSKAM10 is recommended, do you want to switch " ? In the middle of a keyboard QSO, if the conditions change, a setting might allow an automatic mode change based on a RSID signal... if both stations are using RS ID. Andy K3UK
