DTR Powered Echo Link Interface - "Tiny Echo"

Advanced, PIC 16F84A Echolink Inteface -"Fox Echo"

SC2: New Sound Card Interface with Echolink

SC1: Simple Saound Card Interface for Digital Comm

New revised TinyEcho interface:

Click to enlarge

Provides Full Isolation between Rig & Computer by using two audio transformers & two Opto Couplers. May be powered from DTR Line by running a script on your PC or by supplying external 12V DC.

This interface may be made “Self-Powered” if you run a script called “DTR on/off”. Since DTR is not used, it may power the Opto coupler transistors. However, interface may be powered by external 12V to get the same performance.

Rig ground is 100% isolated from PC ground using high quality Bourns SMT Transformers and 4N33 Opto Isolators.

In fact, this is nothing but a Sound Card Interface with an addition of "COR" isolation circuit. (SC2 includes COR isolation)

With this, I hope to see more amateurs joining this exciting digital mode.

For online payments, shipping charges will be added on secure web page, which are from $5.00 upwards for Registered Air Mail, and based on value/weight of the KIT/Assembled.

For Money Order, please refer to table provided on MO web page.

"Buy from 2CO", you may pay using your CC or funds from Paypal.