[amsat-bb] Ao 73 problems

Hello all. I seem to have a wee problem with working Ao-73. The problem I cant work it at all. I am hearing people talking but when I attempt to find my downlink nothing heard. I have tried sending cw up and tuning downlink and also tuning uplink and nothing. I have set up tuning for 145.950 down and 435.150 up. Am missing something here? I spoke to my good friend and very good Sat operator Derrick Gm0fmw and he also cant access it with a fairly good antenna set-up. We are both in Edinburgh Scotland Is this the problem? Please all help will be appreciated .

Thanks Kev MM0KJG