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Tonne Software, home of good engineering software
 
A technically-oriented site for engineers and technicians
offering to the fraternity a collection of original engineering software.
Browse, choose, download.

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These programs are copyrighted and are not to be placed on another website
nor are they to be placed on any medium for any purpose excepting a single instance
in which ye scribe and the posting party have both entered into a written contract.
If you find any of these programs on another site
DO NOT DOWNLOAD THEM: THEY ARE PROBABLY OBSOLETE AND MAY HAVE ADDED SPYWARE OR OTHER MALWARE.


Go to the filter design program
a Windows® electrical filter design and analysis program handling all of the usual options (family, topology, bandwidth, etc.). It has a nice toolbox including real-time tuning modes and optimization. Outputs are presentation quality.

Go to the filter design program
Go to the meterscale program
a Windows® meterscale drawing program to allow you to design and print professional-quality meter scales on your printer. Nice options include the ability to import a graphic (and resize and place it where you want), make a modern-looking "flattened" scale, use seriff or sans-serif fonts of any size and specify the scale colors. And lots more!

Go to the meterscale program
Go to the SVC filter design program
a Windows® electrical filter design and analysis program designed to expedite the design of lowpass and highpass filters using Standard Value Components (nearest-5% values).

Go to the SVC filter design program
Go to the Optimized Lowpass filter design program
a specialized Windows® filter design and analysis program designed for the serious radio amateur to expedite the design of optimized amateur-band output transmitter lowpass filters.

Go to the OptLowpass filter design program
Go to the helical-resonator filter program
a Windows® program to help you design and analyze helical-resonator bandpass filters, usually used in the VHF and UHF frequency ranges.

Go to the helical-resonator filter program
Go to the diplexer program
a Windows® program to allow you to design and analyze diplexing networks using either the highpass/lowpass or the bandpass/bandstop topology.

Go to the diplexer program
Go to the PI-EL program
a Windows® program to allow you to design and analyze PI-L matching networks.

Go to the PI-EL program
Go to the class E program
an interactive Windows® program to allow you to design RF amplifiers using the single-ended topology.

Go to the Class E program
Go to the quadrative network design program
an interactive Windows® program to allow you to design and analyze the active networks used for single-sideband signal generation. Accepts orders from two to ten, specified operating frequency range and analysis frequency range. Reveals sideband suppression, chain angles and angle differences. The program has a component-tuning mode. Arbitrary components may be used, or nearest 1% or 5% values and results seen. Writes Spice file.

Go to the quadrative network design program
Go to the great-circle mapping program
This Windows® program allows you to print both great-circle (polar) and rectangular projections of maps of the world. Polar is as seen from a specified home location. Also shows the azimuth and distance to a specified target. Easy to enter new home or target locations. Shows/uses Maidenhead strings.

Go to the great-circle mapping program
Go to the broadcast mapping program
This Windows® program allows you to see a map of Region 2 (North, Central and South America) and see the locations and patterns of AM radio stations on a specified frequency. Scaleable mapsize and patternsize, specified map center, hardcopy, easy restart (setup is saved).
Please note that no updates are planned for either this program or the associated database files.

Go to the broadcast mapping program
     
Miscellaneous items Papers, AppNotes and miscellaneous programs  
     
Go to the Sites page Other technical sites you may find interesting or useful  
     
Contact us Contact us if you have any questions or comments
 
     


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