Recent content by mcalves

okay using the antilog key finally worked. I get that 0.109 answer above with no errors. Thanks Dick, Sleek, and Hootenanny for responding. Much appreciated!

So take this example that's in the book: E2 = .155log^-1(-3/20) = 0.109 The answer is already given, but how would I enter this in the calculator? Every way I tried has yielded a syntex or math error. thanks in advance

by the way yes, the way its written in the book its log^-1 thanks

Dick, I'm not real big on math, I am not sure what you mean. Basically db = 20log(E1/E2) db = -3 E1 = .155 How would you solve for E2

Hello all, this is a formula that calculates DDM (depth of modulation) at certain outputs of the ILS's Glideslope. I posted this question some time ago but I think I left out some important details. Any help is really appreciated. This is basic info on the ILS...

Thanks neutrino. I'll give it try. :)

its interesting you say that because the its starts out with a 3db then they change it to a -3. I'll type the whole thing below... E2 = E1 log-1(db/20) Where: E2 = before attenuation E1 = after attenuation The upper attenna signals exiting Z6 at output 2 are attenuated by 3db...

thanks neutrino, but what about that (-3/20) that will give me a negative. Logs don't work that way right?

Its log to the negative power of 1, I don't know how to format that below. the funny thing is that there are examples in the book with the answer. For example: Ec = 2.5log-1 (-3/20) = 1.77 Ecs = 1.0log-1(-3/20) = .707 Ess = 0.155log-1(-3/20) = 0.109

Hello Im studying an ATS equipment known as an ILS. One of the formulas to determine the DDM is : E[SIZE="1"]2 = E[SIZE="1"]1 log-1(db/20) When I try entering log-1, the calculator displays Math Error. What am I doing wrong? Thanks for the help in advance