Nearly all C-band communication satellites use the band of frequencies from 3.7 to 4.2 GHz for their downlinks, and the band of frequencies from 5.925 to 6.425 GHz for their uplinks. Note that by using the band from 3.7 to 4.0 GHz, this C-band overlaps somewhat into the IEEE S-band for radars.
A ventral hernia occurs when a weak spot in the abdomen enables abdominal tissue or an organ (such as an intestine) to protrude through a cavity muscle area. These hernias are visibly identified by a bulge in the belly area. The most common sites for ventral hernias are the site of a previous abdominal procedure (an incisional hernia), the navel (an umbilical hernia), and the groin (an inguinal hernia). About 90,000 ventral hernia repairs are performed in the United States each year.
Ventral/Incisional Hernia. A ventral/incisional hernia can occur anywhere on the abdominal wall. If you have had prior surgery on your abdomen this type of hernia may occur at the site of your scar. Symptoms can include a bulge in the area that may be accompanied by pain or a dull ache when standing for prolonged periods of time, when doing heavy lifting, coughing or straining.