Has anyone looked at MT63 or Olivia for weak signal comparisons? Mario WO5O On 1/29/10, Pär Crusefalk <per@xxxxxxxxxxxx> wrote: > Hi, > > This is just excellent. > As RSID is MFSK-like it should follow that MFSK32 should be the best and > your data seems to verify that. OTOH THOR22 was a disappointment. > It would be excellent to redo this test and add more modes, that way we > would have some real data instead of claimed SNR figures. For now I > think its safe to mark the MFSK-modes as suitable for QRP and weak > signal situations in the mode table. > > 73 de Per, sm0rwo > > > ons 2010-01-27 klockan 16:48 +0100 skrev Rein Couperus: >> I performed some tests to see how sensitive the RSID decoder is when >> connecting in a slow mode. >> method: wait until SM0RWO switches back to PSK500R reduce power and >> connect in the test mode, >> repeat until it does not work anymore... The test path is 1500 km >> North-South, frequency 10147 kHz, >> channel clear. Here are this afternoon's results: PSK125R: 1 Watt to >> connect, RSID switching at 500 mW >> (block incomplete at 500 mW) MFSK32: 500 mW to connect... RSID switched at >> 200 mW, >> (block incomplete at 200 mW) THOR22: 2 Watts to connect (RSID switched >> at 300 mW, block incomplete at 300 mW). >> This test was around 15:00 UTC, already getting dark in Stockholm... >> The server timing needs to be tweaked for the slow modes (MFSK16, THOR8), >> timing is too short at the moment. >> Also, a connect request in THOR8 takes so long the chance is big the >> server switches back to PSK500R >> during the packet... Generally, to me it looks like the sensitivity is >> plenty, also for QRP work. >> 73, Rein PA0R -- >> http://pa0r.blogspirit.com >> > > > > >