Custom Products for the Digital Radio Amateur Enthusiast
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Custom Products for the Digital Radio Amateur Enthusiast |
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A Radio Interface for Digital Two-Way Radio Applications
Top and Bottom photos of the DRA-100-RJ45 REV2 circuit board.
Click either image for a larger view.
Schematic Image - Click to download a high quality PDF.
NOTE: The schematic depicts the functions of the RJ45 socket with the configuration socket wired "straight across". Obviously, the configuration socket allows re-routing of these signals to other pins when necessary, and when done will not match the descriptions shown above.
Parts List:
If you purchased our kit, refer to the parts list and make sure you have all of the components
you need to build it.
Click here
for Parts List.
Construction/Assembly:
Click here for assembly instructions and construction notes - with large photos.
Jumper Settings:
Click here
for Jumper Settings and other board connection assignments.
Speaker Jack Operation:
Click here
for details on the proper use of the rear mounted speaker jack.
Modification of the Tigertronics SignaLink™ SLMOD6PM and SLMODVAR jumper
modules.
Click here
to see how to easily modify these modules for use in the DRA-100-RJ45.
VOX Operation:
Click here
for DRA-100 VOX Operation.
RJ45 Pinout:
Click here
for RJ45 Pinout.
Recommended powering requirements:
The board is supplied with 5 VDC from the USB connection of the host or computer.
Recommended receive audio input level:
The DRA-100 accepts the widest range of audio compared to any other similar radio adapter. The
input signal is attenuated by a potentiometer, giving the broadest range of acceptable levels.
As little as 20 mV P-P, and as much as 20 volts P-P. If your receive audio level is adjustable
or programmable we recommend around 2.0 volts P-P. This allows very good signal-to-noise
ratio and low cabling cross talk. This level results in a 50% rotational setting of the potentiometer.
All DRA-100's are supplied with a Genuine C-Media CM119A.
Information on the CM119A.
Click here
to download a manual for the C-Media CM119A.
Secure PayPal ordering is available from the DRA-100-RJ45 main page.
Email Kevin
Custer ordering information, order by check, or support of this
exciting product.
Product of Masters Communications, all rights reserved.
SignaLink® and SignaLink USB® are registered trademarks of
Tigertronics.
The use of the name SignaLink and/or SignaLink USB is only in reference to this product.
No infringement for such use is intended.
Specifications may change without notice.
Images property of Kevin Custer - W3KKC
Board layout by Kevin Custer - W3KKC.
HTML February 14, 2022, W3KKC All Rights Reserved!