SIGNING INTO THE NET: Like most traffic nets, MSN is a directed net. This means that a Net Control Station (NCS) is in charge. At the beginning of the net, the NCS will call the net and ask for checkins. Listen for a few checkins and then when the NCS sends QNI, send a single letter (many people send the last letter of their call). When the NCS repeats the letter you sent, sign in by sending your call and list whether you have traffic or not. If the NCS sends another letter, wait for that station to check in and then try again. See the example below

NCS: CQ MSN DE KC3Y MSN QNI
YOU: X
NCS: X
YOU: DE KA3ACX QRU if no traffic or QTC 3RN 1 if you have one message for Third Region Net
or
YOU: DE KA3ACX QRU TNG MSG NR 7 if you have no traffic but want training messages starting with number 7
NCS: KA3ACX GE PSE AS (AS sent as one char.)
 If you asked for training, the NCS will respond something like the following
NCS: di-dit di-dit KA3ACX (Attn KA3ACX The di-dit di-dit (II) is the attention signal)
YOU: HR (short for here)
NCS: W3CB
W3CB: HR
NCS: QNY DN three TNG MSG NO 7 D3 (Change frequency down three KHZ for training msg 7
   or alternatively
NCS: Down three TNG MSG NO 7 D3 (Change frequency down three KHZ for training msg 7
YOU: G (Going)
W3CB: G (Going)
 If you are brand new to the net, W3CB will call you when you get down 3KHZ. Once you have been training for a while, you will call W3CB

Once you get started, you will normally get messages sent in groups of three. As you progress through the course and your code speed increases you may if you want ask for more messages each session