Windows 7™ Compatible

Two-Tone Decoder II

v2.03

<Click to upgrade from Version 1>

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.



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.

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 / Vista

Decode tone frequencies from 200 ~ 4,000 Hz

Built-in Auto-Calibration system for high accuracy.

New Features in Version 2.02:

(Released April, 2010)

Single-Tone and Two-Tone capture without changing modes

OPTIONAL 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. by adding an external relay (we hope to providing this accessory soon).

Version 2.03:

(Released April, 2010)

Now able to decode closely-stacked pages

Read 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.

**Minimum System Requirements:

Microsoft Windows 98/ME/2000/XP/Vista™/ Windows 7™
Pentium II - 233MHz or better CPU
256MB 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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