------------ Původní zpráva ------------ Od: sp7tee Komu: ok1teh Petrzilka, Předmět: Re: VHF contest 2010 - questions Datum: 06.9.2010 21:47:34 ---------------------------------------- Matej, We had no problem with Your signal on SSB, however on CW, little "clicks" on all band. But no problem to copy any station, even very week, because of this. We had 2 ant. systems - 2*12 el. DK7ZB (8m boom) and 2*17 el. F9FT, and 500W. We used FT1000MP (10.695 MHz IF), and my home made TRSV, with 2,2kHz crystal filter. Also TR9130, like 1st heterodyne..:-)) - has a very low noise PLL. Our result: 294000, and 785 QSO's - best result ever in Poland on 2m. Now about the others... I thing, Yours place- the same LOCATOR- was the best checking of Our equipment. We, also TRASMITTING through crystal filter - not 2,2 kHz, but 20kHz wide. .... I think, You know, that there is no receiver in commercial TRX, on this planet, can handle -20dBm on ant connector! I think, some of signals is much stronger. - I will check this next year...:-))) So, my conclusion is very simple: They have to build very good receivers. Yours is the good first steep..:-)) I'm using: BFG235, with 10V@200mA , as first LNA HMJ-5 - WJ mixer, with 20dBm LO power. All is matched in all ports to 50 Ohm, in all used freq. All is ending 2,2 kHz crystal filter, at RX port of my FT-1000MP. We also using PREAMP - the same as above (BFG235), but can off, if needed. Now I'm thing about better mixer - this is the place of intermodulation distortion in my RX. Matej, tell Them, You had no problem, with Our signal- it will be much more, then I can do... What do You thing about this QTH? (JO70SS). Best 73! Maciek sp7tee