VHF Radio Signal Checks and Readability Scale

It is sometimes necessary to verify that your transmitter and receiver are operational. This can be done by:

1. establishing contact on the working channel and conducting your tests (the actual wording of the test is given in the example below),

2. not exceeding ten seconds for signal checks,

3. using the readability scale listed below when giving the report, remembering that a readability of 3 to 5

indicates to the receiving station that it is being copied 100 percent.

Readability Scale

1 = Bad (unreadable)

2 = Poor (readable now and then)

3 = Fair (readable with great difficulty)

4 = Good (readable with minor difficulty)

5 = Excellent (perfectly readable)