Bidding box for home-played games. Use of bidding boxes has several advantages over oral bidding: it reduces noise in the room, prevents bidding being overheard at neighboring tables, allows easier review of the auction, and reduces the opportunity to pass unauthorized information to one's partner (intentionally or not) by the manner and intonation in which one makes one's bid. A bidding box is typically a plastic box with two slots, each containing a set of bidding cards. One slot contains 35 cards with symbols of bids (5 denominations—clubs (), diamonds (), hearts (), spades (), and notrump (NT)—in seven levels of bidding,
Spectrum auction This rule also states that bidders are not allowed to cooperate with one another, or share bidding strategies, or have discussions on bids and what they would do with them in the market. For each auction, the initial schedule for bidding rounds is typically released by the FCC in the Public Notice listing the qualified bidders before bidding in the auction starts. A Simultaneous Multiple-Round Auction offers every license for bid at the same time and consists of successive bidding rounds in which qualified bidders may place bids on individual licenses. Unless otherwise announced, bids will be accepted on all