Echolink Accessories



KJ6ZD Amateur Radio Accessories currently offers Brand new the latest device in the controller line is about ready to be released and offered for sale. The new RCEI-2010 is a versatile controller interface with many optional features. The front panel has indicator for all important interface status information. They can be disabled to conserve energy or if they are simply not needed. The receive audio is first routed through an Automatic Audio Level Control circuit. This will provide stable Audio levels between approximately -10dBm and +14dBm input range, The 0dBm output is used to decode DTMF and PL Tones if the CTCSS option is installed. Another part of the signal is routed into a Audio Tone control circuit that allows to Boost/Cut Basses or Boost/Cut Treble. If the Interface was purchased as repeater controller with Echo-Link / SvxLink support this processed audio can be routed into the Sound board of the Host Computer and the appropriate serial protocol can be selected via RS232. There are many more features implemented in this new type of controller. As another option we offer and VoiceCorder plug-in module that will expand the controller with Speech announcements, short message recording and more. EI-151 (Echo-Link Interface Controller) Full featured controller interface with timeout timer and improved audio processing. (After 5 years this model will be phased out! and replaced by the EI-160) CTCSS unit, this unit can be used in older Transceiver to beef them up for use with PL'ed Repeater systems. Installation requires advaced technical knowledge. FT-150 a Fake Transceiver that can mimik a transceiver to a Multi Port Repeater Controller. This is a low cost flexible interface controller that can be configured in many ways for different tasks. Not yet released, EI-160 Echo-Link Interface with ALC, timeout timer, improved audio and more. The interface is programmed / setup using the RS232. A Windows application is included to ease this task. For security reasons there are only two over air commands. To invoke either one a 3 digit password is required. Commands are "Disable TX or Enable TX" Currently under development, EI-2010 Multi Port Repeater controller with dedicated Echo-Link Interface and more! Please click at the Shop button to make a purchase. The checkout is performed by Google checkout and is safe through their secured server.

EI-2010 preliminary info! The EI-2010 was developed to offer a single board solution to the growing Echo-Link communities. Although there are other solutions to link or hardwire a repeater for use with the Echo-Link system, unfortunately this is reserved to the more technically inclined HAM radio operator. In many cases the operator needs to design and built accessory boards, do a significant amount of wiring etc. to get a repeater linked to the Echo-Link system. Such a system may lack features that are commonly used in today's HAM Radio world. In most cases the interface is made of a simple control circuit that uses DCD / RTS lines from the RS232 only and the DTMF signaling is done at software level. This may open up another can of worms, regarding modulation indexes and inability to match audio levels needed at the host application. In many cases the DTMF decoding works only marginal and the carrier detect is done via VOX that adds additional delays to the turn over times. Here are some features of the EI-2010: Receiver audio is processed through an Automatic Audio Level Control circuit with a theoretical dynamic range of +14... -43 dBm. With ALC there is no input audio adjustment necessary. Simply feed the audio, that's it. If variations on the ausio input occur the circuit will compensate for it. This produces a fixed level of 0dBm to the DTMF, CTCSS and other circuits on the EI-2010. The Soundboard input level is set to default value, however can be adjusted to meet the Soundboard requirements. This feature should be rarely needed. The DTMF decoder gets the correct signal levels for most reliable DTMF decoding within the specified dynamic range. The ALC is configured to discard levels that range into the noise to avoid to process unusable signals. A CTCSS decoder can be used in addition to a separate Carrier detect signal (CAS). When used in simplex mode the CTCSS can also encode the standard plus tones while transmitting. The encoder/decoder is fully software programmable and can be remotely switched off. There is also 1 Auxiliary audio inputs for use with NOAA weather alerts receiver. An optional pre-recorded audio chip-corder provides up to 8 minutes of announcements, system status, time and much more information about the system. A special recording block allows users to record and play back their audio to verify signal strength and quality. A total of 2 Digital alarm inputs (5V maximum) are available via on board header. A total of 3 over voltage protected Analog to Digital inputs can be used to measure such as Temperature, AC voltage or DC voltage. If an RSSI signal is provided (0-3.3 Volt) the system can even readback the users signal strength. The Main Micro Controller is a PIC type that operates at 12 MIPS (12 million instructions per second) to carry out any task instantly. A Tone generator is used to generate CW and Courtesy tones. The unit produces a CW sine wave not a hard sounding Square wave. A external battery can be connected to keep the EI-2010 and the Real Time Clock running, in case the supply is interrupted. The interface is available for Echo-Link for Windows support or the on popularity gaining SVXLINK link system. Audio that is routed to the Echo-Link host computer is processed through a Tone Control circuit that can significantly improve the audio quality, by Amplifying / Attenuating Bass or Treble, send over the Internet. A quick visual system check can be done by checking the 8 LED'S that show PTT, DTMF, COR, PL TONE, 12 Volt, 5 Volt, and 3.3 Volt status on the Fly. If they need to be switched off, simply tell it via DTMF command. A windows compatible programming interface will be offered to ease the many programming tasks. The above are the initial features that may change without notice!.

KJ6ZD Amateur Radio Accessories currently offers

Brand new the latest device in the controller line is about ready to be released and offered for sale. The new RCEI-2010 is a versatile controller interface with many optional features. The front panel has indicator for all important interface status information. They can be disabled to conserve energy or if they are simply not needed. The receive audio is first routed through an Automatic Audio Level Control circuit. This will provide stable Audio levels between approximately -10dBm and +14dBm input range, The 0dBm output is used to decode DTMF and PL Tones if the CTCSS option is installed. Another part of the signal is routed into a Audio Tone control circuit that allows to Boost/Cut Basses or Boost/Cut Treble. If the Interface was purchased as repeater controller with Echo-Link / SvxLink support this processed audio can be routed into the Sound board of the Host Computer and the appropriate serial protocol can be selected via RS232. There are many more features implemented in this new type of controller. As another option we offer and VoiceCorder plug-in module that will expand the controller with Speech announcements, short message recording and more.

EI-151 (Echo-Link Interface Controller) Full featured controller interface with timeout timer and improved audio processing.
(After 5 years this model will be phased out! and replaced by the EI-160)

CTCSS unit, this unit can be used in older Transceiver to beef them up for use with PL'ed Repeater systems.
Installation requires advaced technical knowledge.

FT-150 a Fake Transceiver that can mimik a transceiver to a Multi Port Repeater Controller.
This is a low cost flexible interface controller that can be configured in many ways for different tasks.

Not yet released, EI-160 Echo-Link Interface with ALC, timeout timer, improved audio and more.
The interface is programmed / setup using the RS232. A Windows application is included to ease this task. For security reasons there are only two over air commands. To invoke either one a 3 digit password is required. Commands are "Disable TX or Enable TX"

Currently under development, EI-2010 Multi Port Repeater controller with dedicated Echo-Link Interface and more!

Please click at the Shop button to make a purchase. The checkout is performed by Google checkout and is safe through their secured server.

EI-2010 preliminary info!

The EI-2010 was developed to offer a single board solution to the growing Echo-Link communities. Although there are other solutions to link or hardwire a repeater for use with the Echo-Link system, unfortunately this is reserved to the more technically inclined HAM radio operator. In many cases the operator needs to design and built accessory boards, do a significant amount of wiring etc. to get a repeater linked to the Echo-Link system. Such a system may lack features that are commonly used in today's HAM Radio world. In most cases the interface is made of a simple control circuit that uses DCD / RTS lines from the RS232 only and the DTMF signaling is done at software level. This may open up another can of worms, regarding modulation indexes and inability to match audio levels needed at the host application. In many cases the DTMF decoding works only marginal and the carrier detect is done via VOX that adds additional delays to the turn over times.

Here are some features of the EI-2010:

Receiver audio is processed through an Automatic Audio Level Control circuit with a theoretical dynamic range of +14... -43 dBm. With ALC there is no input audio adjustment necessary. Simply feed the audio, that's it. If variations on the ausio input occur the circuit will compensate for it. This produces a fixed level of 0dBm to the DTMF, CTCSS and other circuits on the EI-2010. The Soundboard input level is set to default value, however can be adjusted to meet the Soundboard requirements. This feature should be rarely needed.
The DTMF decoder gets the correct signal levels for most reliable DTMF decoding within the specified dynamic range. The ALC is configured to discard levels that range into the noise to avoid to process unusable signals.
A CTCSS decoder can be used in addition to a separate Carrier detect signal (CAS). When used in simplex mode the CTCSS can also encode the standard plus tones while transmitting. The encoder/decoder is fully software programmable and can be remotely switched off.
There is also 1 Auxiliary audio inputs for use with NOAA weather alerts receiver.
An optional pre-recorded audio chip-corder provides up to 8 minutes of announcements, system status, time and much more information about the system. A special recording block allows users to record and play back their audio to verify signal strength and quality.
A total of 2 Digital alarm inputs (5V maximum) are available via on board header.
A total of 3 over voltage protected Analog to Digital inputs can be used to measure such as Temperature, AC voltage or DC voltage. If an RSSI signal is provided (0-3.3 Volt) the system can even readback the users signal strength.
The Main Micro Controller is a PIC type that operates at 12 MIPS (12 million instructions per second) to carry out any task instantly.
A Tone generator is used to generate CW and Courtesy tones. The unit produces a CW sine wave not a hard sounding Square wave.
A external battery can be connected to keep the EI-2010 and the Real Time Clock running, in case the supply is interrupted.
The interface is available for Echo-Link for Windows support or the on popularity gaining SVXLINK link system.
Audio that is routed to the Echo-Link host computer is processed through a Tone Control circuit that can significantly improve the audio quality, by Amplifying / Attenuating Bass or Treble, send over the Internet.
A quick visual system check can be done by checking the 8 LED'S that show PTT, DTMF, COR, PL TONE, 12 Volt, 5 Volt, and 3.3 Volt status on the Fly. If they need to be switched off, simply tell it via DTMF command.
A windows compatible programming interface will be offered to ease the many programming tasks.

The above are the initial features that may change without notice!.