For theĪudio lines, I recommend using shielded wire. This interface can be constructed for about $10, and will noticeably improve the audio on your Allstar node, both in transmit and receive. The idea here is to turn off transmitted PL tone only when my node is identifying. There are many things that the radio can be programmed to do when this pin is active, but I currently have the Motorola radio set In my case, the solid-state relay controls a DC cooling fan for my radio, while the other output connects directly to the Motorola 16 pinĪccessory connector. I designed one of the outputs with a 3 foot long wire lead to connect to a solid-state relay, while the other output connects to the Motorola 16-pinĬonnector. Output to key our transistor, which can sink up to 200 mA! The solid-state relays I have require between 13-20 mA at 12 VDC. Instead, we are using the ARIusb fob GPIO The GPIO outputs on the CM119 chip used in the ARIusbĪre only capable of sinking 8 mA, not enough for anything useful by itself. 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
![make motorola programming cable make motorola programming cable](https://hamgear.files.wordpress.com/2015/08/cp2102b.jpg)
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
#MAKE MOTOROLA PROGRAMMING CABLE SERIAL#
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.
![make motorola programming cable make motorola programming cable](https://allstarsetup.com/wp-content/uploads/2019/01/IMG_20190126_142950.jpg)
This page has information on my shack projects.
![make motorola programming cable make motorola programming cable](https://www.locuradigital.com/images_upload/hkkn4027a-07.jpg)
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.