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SM3WMV SO2R Deluxe
Introduction
After my old SO2R box got ruined by lightning I thought it was time to make a real
SO2R box that would fulfill all my needs. I desided to make a box with a LCD on it
and a menu system so you can change all the settings etc directly on the box. The
only switches visible on it would be for chosing Microphone in manual mode and
to switch the audio between the rigs. If one want to change for example the receive
mode that is simply done via the menu system. Its based on a ATMEL AVR AT90MEGA128
8-bit RISC processor running at 8 MHz.
Features
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USB
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Either used to control the box from the computer, like W5XD box or
if you jumper the box inside you can use it as a simple USB->RS232 converter to control
for example a rig.
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COM port
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Used to control the SO2R box externally from the computer, like the W5XD box.
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LPT port
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Used for PTT, Rig A or B automatic selection and CW keying.
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RX Audio
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Auto – Headphones follow the radio selected by the computer
PTT – Allows listening to second radio while first radio is transmitting or the other way around
Manual – Provides full manual control of headphone audio
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TX Mode
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Manual – Manually control the microphone/keying with a switch on the box
Auto – The microphone/keying follows the computer
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| I/O ports |
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Phone input
Mike input
Key input
Paddle input (for LPT keying in the log software)
Band data output (from LPT port)
8-pin outputs to each radio containing mike, key, audio (L&R) and PTT line
COM Port to computer
Aux COM Port - for conversion
USB
Line in - Used when voice keying etc with the computer
Line out - Used when recording audio from the radio (L&R channel)
PTT A - Used to identify which radio that does PTT when using VOX control
PTT B - Used to identify which radio that does PTT when using VOX control
Footswitch input
DC input - Up to 30V DC voltage is accepted
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| Other specs |
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6 function buttons - Used in the menu system
Saves all settings in a EEPROM with a button
LCD that is used for the menu system. Menus is made for example mode switching, baud rate settings etc.
USB interface that handles up to 2Mbit
USB conversion avaible by jumpering the box and using the aux COM port
Boot loader so firmware upgrading can be done uthrough the USB or COM Port
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| Supported softwares |
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Writelog by W5XD
CT by K1EA
TR Log by N6TR
NA bv K8CC
Win-test (Planning on fixing "smart" SO2R support too)
And all other softwares that can do A/B selection, PTT and CW on the com port
I will also do softwares for controlling it like the W5XD box via either the USB or COM port
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Schematic (All functions aren't tested)
[Download]
Preview pictures of the box
This is the box used in WPX SSB with the main functions implemented. It is a lot of programming to be done
before all functions are implemented.
Inside view of the box taken with a simple webcam
Inside view of the box taken with a simple webcam
Picture of the microprocessor, an ATMEGA128 8-bit RISC
Schematics and PCB layouts will be published as soon everything is tested and works properly. Even the gerber-files
will be published.
To be continued...
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