Frequency is measured in hertz (Hz). A person who has hearing within the normal range can hear sounds that have frequencies between 20 and 20,000 Hz. The most important sounds we hear every day are in the 250 to 6,000 Hz range.
An issue date was added, and cheques may not be valid a certain amount of time after issue. In the US and Canada a cheque is typically valid for six months after the date of issue, after which it is a stale-dated cheque, but this depends on where the cheque is drawn; in Australia this is typically fifteen months.
Unless you write on the check that it will not be valid after a certain number of days, banks may honor the check. Generally, banks are not required to honor checks that were written more than six months prior.In some states, a bank will consult with the person who wrote the check if it is presented with a check older than six months.Certified checks, which are guaranteed by a financial institution, cannot go stale and will be honored at any time.f you are unable to cash a stale check, a lawyer can help you recover the debt or obligation from the person who owes you the money. Consult a Lawyer-Present Your Case Now! Last Modified: 01-16-2014 04:01 PM PST. Find the Right Lawyer Now.