Topband: FT-8 question

2017-12-02 Thread Jim Thomson
Folks on FT-8 use a 2.5 khz ssb wide RX filter.FT-8 is supposed to be good for 20 db below the noise floor. I assume that means 20 db below the noise floor of the 2.5 khz RX filter ? But a 250 hz cw filter would drop the noise floor by 10 db... vs the 2.5 khz wider filter... if CW mode

Topband: Conditions in Contest last night

2017-12-02 Thread Roger Kennedy
Well conditions were OK again last night (as the night before) . . . ie the band was open for DX contacts, but not the sort of big signals I always remember on 160m. I came on for a couple of hours around 2330Z . . . and for an hour around our Sunrise (0700Z) I managed to work everyone I heard

Re: Topband: Good Conditions or Just Activity?

2017-12-02 Thread Don Kirk
I considered Conditions pretty good last night from Midwest US into Europe (definitely above normal) and was amazed how easy it was for me running my typical CW with 100 watts. Unfortunately I fell asleep at 0200 UTC so only took a little advantage of the good conditions prior to that time. Don