This is over twice as fast as Whelen, over three times faster than Federal Signal, and a whopping 20 times faster than Motorola. Listen to a Genave decoder responding to a code sent at a blazing DTMF rate of 20/5 also known as 40 digits per second. Standard Whelen timing is 40 msec mark / 20 msec space. Listen to a DTMF command code being send by an automatic encoder at a standard “Whelen” rate of 16 digits per second. The DTMF code you hear is also 1646347904. Listen to the same DTMF code being sent at Genave SuperFast rate of 20/20 (25 digits per second) from an automatic encoder. Listen to a DTMF command code being sent from an automatic encoder at the standard Motorola rate of 250/250 (2 digits per second). If you are sending each DTMF digit by pressing each button individually, then you are sending the code “Manually”, rather than “Automatically” with a store and forward encoder. In the end they all perform the same function of sending out DTMF digits and characters. Store and forward encoders can be a programmable microphone or two-way radio, a stand-alone encoder such as the ENC-3300, or part of a large law enforcement dispatch console. You “Store” the DTMF code into the device when you program it, then “Forward” it to send the entire DTMF code as one complete DTMF string of numbers and characters.

An automated encoder is also called a “Store and Forward” encoder. To send the digits quickly (40/40) you need to be using an automated encoder since you could not press each button by hand that fast.

Mark and Space refer to the duration a DTMF tone is produced, as well as the duration of the silence between individual digits.Ĭlick here for additional information on Mark & Space timing. This is being sent at a slower rate, but would still activate equipment watching for this code. Listen to a DTMF command code being send by an encoder at a standard rate. The extra codes are very useful in preventing standard telephone codes from being used to control remote devices, and can give you override status when used correctly in a two-way radio system.

Dtmf tone dialer