The tone frequencies are displayed immediately on screen. DTMF tones, most commonly known as "Touch-Tone" (tm AT&T) are used for paging, ANI and remote control over radio, and for dialing on telephone lines. Frequencies below 250 Hz are generally reserved for CTCSS sub-audible tones used to access repeaters and limit interference. Another filter searches for continuous tones, ingoring noise, voice and digital communications. With time and magnitude data, the software first processes each batch of samples by applying a band-pass filter or window, thereby ignoring any frequencies outside the range of 250-5,000 Hz. Receiver audio output is fed into the computer's sound card (via cable or microphone) where an A/D converter reads the signal's instantaneous voltage 11,025 times per second. Read on for complete description.OR see the online User ManualĬomTekk Multi-Decoder utilizes the latest in Digital Signal Processing (DSP) technology to instantly and accurately measure the frequencies of a received two-tone paging signal or "fire dispatch tone out" signal, CTCSS "PL" tones, and DTMF codes. by adding an external relay (we hope to providing this accessory soon). Serial/USB control for external relay or Push-to-Talk repeater operation - Now you can retransmit audio using our Universal Radio Interface, or activate a light, bell, door, etc. Useful for setting up SafAlert Notifier™ or for programming scanners with a "Fire station tone-out" feature.External serial port control to operate relay or PTT circuit.Improved 2-tone decoding captures "stacked" pages.CTCSS sub-audible tone decoder reveals repeater access tones.Includes all the features of our popular 2-Tone Decoder, PLUS: Instantly discover fire dispatch pager tone frequencies,
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |