I have a cheap jaycar replacement aerial up, pointing about the same way (and facing the same way up, I think...)
It needed an f-connector cable (didn't have one), so I chopped the end of our unused sky cable, and used that for the short run to the kingsray uhf amplifier
I think it is screwed on OK (the f connector), and I stripped the other end of the cable and attached to the Kingsray amp OK. but I'm getting nothing. (ie tivo won't find any channels). tried realigning and fiddling with connections. Thinking about it now, I may have the gain on the masthead amp set too high (but tried turning amp power off, still nothing).
Starting to look like a "good marks for trying but time to call the experts" ... but anyone got any obvious tips/solutions? thanks heaps!
(I suppose it could possibly be the kingsray that failed in the storm somehow... in which case I could try f-connecting the current output of that amp straight to the uhf aerial, if I don't need an amp anyway)