Military channel

Am I missing something here, or do you need special access ?
Back to the thread.....So, after a few ladder excursions and not a little bad language I'm ashamed to admit, the LNB was detached, re-attached, detached, taken to a little satellite/TV shop locally. They couldn't test the LNB unless it was attached to a dish. Then, on their advice I brought the skybox to them, it was hooked up and tested ok. They then suggested that squirrels might have bitten through the cable, although this proved not to be the case on checking (after much bad language). They then offered to give me a used LNB to try out, to "see if it works". Brought it home, dropped it on my foot, it really hurt, and after even more bad language I reconnected the new old LND and BINGO!!!!!!!
Somehow the water was getting into the previous LND and disrupting the transfer of the signal. One question, on using the 'Signal Test' facility I noticed that whilst the signal strength is approx 80%, the signal quality is about 20%. However the picture quality is fine, at least to my eyes. Any idea as to why the signal quality shows as so low ?
SHJ