![]() ![]() Transformers, bypass capacitors and a DC blocking capacitor which prevents the DC intended for the hand microphone from reaching the ARIusb.Īlso included are two NPN transistors which are connected to the ARIusb fob GPIO outputs 1 and 4. ![]() This simple interface consists of two audio This interface was designed in 2021 for use with theĪnd as built connects to the ARIusb on one side, and a Motorola 16-pin accessory connector on the other side. ![]() LVB Tracker / Kansas City Tracker interface Multi-radio serial / parallel port interfaceĪlinco DJ-G29t programmer ERW-7 ERW-4C compatible (also mobiles such as DR-735) Note: Some schematics are shown on different pages from this website. If this is not visable, click here to reload web page.Ĭlick on a link below to jump directly to a schematic. Left side of the page for other operating modes and projects. This page has information on my shack projects. In fact, a MAX232 has two such circuits on a single The level converterĬan be as simple as two transistors, or to be fully RS232 compliant, a Maxim MAX232 chip. All of these radio programming cables use a level converter circuit, RS232 to/from TTL. ![]()
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