• Telephone Tone Decoder
• Fire Tone Decoder
• Two Tone Decoder Online
• Two Tone Decoder Software

Windows 10 ™ Compatible

The CMX823 is a high performance, low power, audio tone decoder that can operate on low S/N signals. Each decoded tone frequency is user-defined to provide the flexibility to operate in a variety of paging. 5 Tone Decoder software download, free Ansys Bladegen Manual Meat Convert Docx To Pdf Java Api Surah Ali Imran Ayat 159 Mp3 Naan Ee Tamil Full Movie 720p. ELECTRICAL CHARACTERISTICS (continued) AC Test Circuit, TA = 25°C, V+ = 5V LM567 LM567C/LM567CM Parameters Conditions Units Min Typ Max Min Typ Max Center Frequency Stability (4.75– 5.75V) 0. Products that will encode and/or decode DTMF (aka Touch Tone®). Products that will encode and/or decode Any Two Tone, Motorola Quick Call, Plectron frequencies, etc. 5, 6 and 7 Tone Sequential. Products that will encode and/or decode five, six and seven tone.

and Fire Dispatch Logging system

Instantly discover fire dispatch pager tone frequencies with our easy-to-use tone decoder.

'Hey just wanted to let you know your two tone reader/decoder software is awsome!
..works real well.' -J.Cody

Feed scanner or receiver audio directly into computer sound card, or simply place computer microphone close to receiver's speaker.
Logs tones, date, time, wave file name to text file - compatible with Microsoft™ Excel <Click to view a sample log file>

Unattended operation

Records dispatcher audio to WAV files

Instant replay of last tone-out

Fully supports Windows 7/8/10 / Vista

Decode tone frequencies from 200 ~ 4,000 Hz

Smart filtering ignores voice audio, noise and data / ANI signals.

Useful for programming scanners such as the Uniden BCD396T with a 'Fire station tone-out' feature.

Upgrade to the new Multi Decoder!
Improved decoder with DTMF, CTCSS, relay control and more! Read on..

See a review on RadioReference.com
Read on for complete description..OR see the online User Manual.

For ordering information, click here.

How it works:

ComTekk 2-Tone 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.

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. This is the sampling rate. 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 300-5,000 Hz. Another filter searches for continuous tones, ingoring noise, voice and digital communications.

The tone frequencies are displayed immediately on screen. Now, simply enter the two frequencies into a two-tone alert radio such as the Uniden BCD396T to be alerted any time that tone-out is sent.

Hear a 2-tone dispatch:

Compatible formats:

Any single or dual sequential (1+1) tone format such as

• Motorola QuickCall 2
• RCA
• Ledex
• Bramco
• Reach
• Plectron
• GE
• custom

[Detailed Specifications]

Not compatible with multi-tone signaling such as 2+2, DTMF, ANI, SELCAL, etc.

Order Here

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IMPORTANT NOTES:

1. Be sure to check the system requirements BEFORE placing your order. By purchasing or installing this software, you agree to the terms and conditions set forth in the License (EULA).

2. Your temporary activation key will be delivered via the email address you provided immediately after purchase. Please check your spam filter and allow up to 24 hours before contacting Support.

**Recommended Minimum System Requirements:
Microsoft Windows 98/ME/2000/XP/Vista™/ Windows 7, 8, 10
Pentium class or better CPU
2GB RAM
16-bit full-duplex audio device

Note: Windows Mixer must be opened manually in Windows Vista™

Low-cost scanning receivers Starting under a hundred dollars, these basic units are great for monitoring analog communications and are compatible with our 2-Tone Decoder..~$85+

Scanners with Fire Tone-out Feature:

Any of these scanning receivers may be programmed to trigger on 2-tone alerts, once you have obtained the tone frequencies using ComTekk's 2-Tone Decoder.

Uniden BCD396XT The ultimate handheld, with 6,000 channels, 25MHz-1.3GHz, P25 digital, TrunkTracker™ IV, Close-Call, more..~$499

Uniden BR330T Handheld racing scanner, 2,500 channels, 25MHz-1.3GHz, TrunkTracker™ III, Nascar, more.. ~ $229

TrunkTracker, BearTracker, are registered trademarks of Uniden Corp.

We believe in giving back to those who made the ultimate sacrifice for their communites.

ComTekk is a proud supporter of the
National Fallen Firefighters Foundation.

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• Documentation
• Design resources

Product description

The CMX823 is a high performance, low power, audio tone decoder that can operate on low S/N signals.

Each decoded tone frequency is user-defined to provide the flexibility to operate in a variety of paging, two-way radio and proprietary systems.

Example systems and tones include: Motorola Quick Call series; GE groups A, B and Zetron, Reach and Plectron 2-tone radio paging; Motorola 5/6-tone paging; and the EIA, CCIR, ZVEI1 and EEA tonesets used for HSC radio paging and selcall.

Up to 32 user-defined decode tone frequencies from 280Hz to 3500Hz are written to an internal RAM-based FIFO. (Two separate 32-tone FIFOs are provided and support fast switching between tone sets).

Each programmed tone (entry in the list) is user-assigned to one of two (or both) tone groups. Two-tone sequence decoding is simplified by dynamically enabling one or the other tone group via a mode selection.

The CMX823 asserts an interrupt on tone decoding state transitions, e.g. notone to decoded tone, decoded tone to notone, etc. STATUS and DECODED TONE PARAMETERS Registers may then be read and indicate the decoder status, the target tone decoded and its tone group.

Telephone Tone Decoder

Devices are available through our distributors below:

Fire Tone Decoder

Datasheets

• CMX823 Datasheet (rev3)

Technical Portal

No additional information available.

Features

• Decodes 32 User-Programmed Tones
• Stores Two Lists of 32 Tones to Fast-Switch Between Tone Sets
• Configurable Decode Response-Time and Decode Bandwidths
• Low Power: 0.75mA at 2.7V and ‘Zero-Power’ Powersave Mode
• Superior Signal-to-Noise Performance
• Low-Cost 3.58MHz Xtal/Clock

Applications

• Two-Tone, 5/6 Tone and Voice Pagers
• Selective Calling (Selcall) Systems
• Wireless Local Loop Signalling
• Voice Pager Switching and Signalling
• Revertive Paging Systems
• Audio Tone Signalling Applications

Power supply requirement

• 2.7 V

CMX823 FAQ

Q. I am considering migrating from the CMX813 to the CMX823, to take advantage of it programmable tone table, can you help me understand the differences between these two devices

A. The CMX823 should be considered to be an enhanced CMX813, in that it is pin, package and virtually function compatible. The CMX823 takes the excellent CMX813 and adds full tone programmability so that user tone sets are now possible, enhanced S/N tone detection performance and improved tone resolution and accuracy. In terms of hardware it is a plug and play solution.

In Software there are two additional registers to be made aware of and some differences in existing Registers, the following table identifies which registers differ. For more detail on the register specifics please refer to the respective data sheets.

Two Tone Decoder Online

Q. I need a replacement for the xX307. What should I use?

A. The xX307 was a receiver IC that utilized external components to program the center frequencies and detection bandwidths of three sequential tones from 200Hz-3000Hz. While there is no pin-compatible replacement for the xX307, the CMX823 is the most cost-effective device that can perform the functions of the xX307. Please be aware that there are many differences between these two devices, most notable being the fact that the CMX823 requires a microcontroller while the xX307 did not.

Q. Do you have a calculator available to work out the hex values to be programmed into the Tone Parameters Register ($34)?

A. Yes – There is an Excel spreadsheet available to calculate values for the Tone Parameters Register ($34) in the CMX823 Tone Parameters Register Calculator [updated November 2007].
Note: The Excel Add-in, ‘Analysis ToolPak’ must be loaded to use the spreadsheet. Please see the Excel help for help on loading Add-Ins.

Q. I have noticed that in some of the 2 tone or 5/6 tone decode sequences the TONE CHANGE bit ($3F b5) is not set between the first and second received tones, do you have any advice?

A. It is important to appreciate the note in section 1.5 of the CMX823 datasheet that states:
RAM location 0 is reserved for programming the 1st tone of a 2-tone or 5/6 tone sequence.
This is intended to stop the possibility that a second tone is written to the first location, this may in some circumstances cause the failure of the TONE CHANGE bit being set correctly. It is sensible to avoid writing a valid tone to the first RAM location 0 if at all possible.

Another recommendation for users who receive concatenated 2 or 5/6 tone sequences is to set the CMX823 to a NOTONE state between success sequences. This will avoid possible false readings of the TONE CHANGE bit.

Two Tone Decoder Software

Guides to operation and interfacing