Thanks Skip. primary mission is for regional access. So far that has turned out to be the case, stations within a few hundred miles. I'm also paying around with 10M ground wave to see what results are. 6M may also be tested.
Andy K3UK On Mon, Jun 28, 2010 at 7:00 AM, KH6TY <kh...@comcast.net> wrote: > > > Andy, the reason there are multiple stations is that every station on a > frequency is not on at the same time. This is why busy detectors can work as > a sharing mechanism. The busy detector make you wait until the traffic on > the frequency has been passed and you can use the frequency. The reason > there are multiple bands is for a similar reason, and also to accomodate > propagation. If you want to have your mailbox always reachable, you > obviously need to scan multiple frequencies and multiple bands. > > The whole point of busy detectors is SHARING frequencies on a > first-come-first-served basis. Otherwise, if there is always a clear > frequency, all the time, the busy detector is not needed. > > A Winlink station may start out at the highest speed level, but usually > cannot maintain throughput and has to drop down, which releases the top half > of the channel, because the bandwidth decreases at the same time. At least I > think that is the way it works. I stand corrected if it is not. Stations > using 500 Hz Winmor should use narrow IF filters so a Pactor-III station on > the same channel does not block your access. > > I have not counted the number of US and Canadian stations in Winlink > recently, but there used to be about 50 stateside, and the idea, and we use > this for MARS, is that if propagation is not favorable for a local server, > one farther away may be accessible. It does not matter, since the Internet > ties all of the servers together and you can retrieve your email from any > that you can access. > > My experience with Winlink was that I almost always had to connect with a > station in New England (from Charleston, SC!) because of propagation or more > locally PMBO's being busy (or not answering because they were busy on a > secondary frequency or band). > > I assume you are not trying to be a Winlink network with your single > station in New York state, so this eliminates the need to be accessed > internationally, or by yachts far offshore. You probably need to first > define what your station mission is going to be and start from there. > > 73, Skip KH6TY > > > >
