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 Amateur Radio Satellite Operation


  PIC 16F688 Satellite Tracking Interface
PIC16F688 Satellite Tracker Interface: ST1
2x16 LCD PIC16F84A Satellite Tracking Interface: ST3
Advanced Satellite Tracking Interface: ST2


 A Simple RS232/USB Satellite Tracking Interface
W5RKN Check HRD support for ST1 here....


Magazine Articles on this project:
Radio Magazine  

Nicolas Cassimis / KD2IR-SV0CY
has covered this project in Radio Communiacation magazine #77 published in Greek. This will help many Radio Amateurs & Home brewers in Greece.

A PDF of article page is here.....



NOW USB & RS232 are Standard. Both Included.

The ST1 kit/project was designed as an affordable alternative for radio amateurs and schools, to generate interest in satellite communications, and bring space technology into the classroom.

It provides hardware & firmware to interface satellite tracking software with Yaesu rotators, for automatic antenna azimuth and elevation control.

This kit/project greatly simplifies ham radio contact with astronauts on board the International Space Station (ISS), through a program called Amateur Radio in the International Space Station (ARISS). (Detailed ARISS contact and other relevant information about ARISS can be found at: http://www.arrl.org/ARISS/ )

Satellite communication is generally viewed as an expensive endeavor by most hams. Those who buy expensive equipment to show-off their capability further dilute the charm of satellite operation. With some home brewing efforts, excellent results can be achieved at very low cost.


Project Bases:  

Project PCB was designed on a PTH PCB measuring 6 x 10cm. Interface supports both, G5400 & G5500 rotators. PIC firmware is provided by Mark Spencer/WA8SME. 

The Satellite Antenna Tracking Interface is targeted to interface Yaesu rotators to your PC running either a NOVA for Windows or SatPC software.

Present ST1 Full kits are supplied with FTDI-232 pre-soldered on PCB and a metal case 


Picture of the Completed ST1:

Click to enlarge

Schematics, Details & Parts List:
ST1 Tech Info Doc. Tech Info Doc for ST1
ST1 Schematic & Parts List Schematic of ST1: Satellite Tracking Interface
ST1 Schematic - JPG JPG

Schematic of ST1: Satellite Tracking Interface

ST1 to Yaesu Controller Cable Making Guide

Schematic of ST1: Satellite Tracking Interface

Setup Guideline for SatPC & Nova for Windows

setup for Nova & SatPC

Setup Guide For F6DQM Sat_Expolrer by F1RHX

 USB Drivers for FT232R Chip

 Rotator Manuals
Yaesu G5500 Manual

Yaesu Rotators

G5500 Front & Back View
G5500 Inter-connection diagram
Yaesu G5400-G5600 Manual

Yaesu Rotators

PIC16F688 Firmware

Free PC Program by F6DQM

Click above image to visit F6DQM Web Page


 Controlling Software for your PC
Nova for Windows

Nova for Windows



AMSAT Satellite Software


Sat_Explorer by F6DQM

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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.

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Free cases no longer available
ST1 RS232 Complete Kit (Metal Case no longer available)



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2CheckOut.com Inc. (Ohio, USA) is an authorized retailer for goods and services provided by Fox Delta.
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