Woodland Hills, California-based American Mobile Systems Inc reports that it has had an offer from LIN Broadcasting Corp’s Transit Communications unit to buy not less than 8.75m newly issued American Mobile shares for $8.50 each; Fleet Call Inc has currently bought 714,286 shares of its common for $5m as part of a previously announced agreement for Fleet call to buy no less than a majority of American Mobile’s shares at $7 each; the new offer assumes that the Fleet Call deal will be completed as planned.