RF-Toolbox Pro

Mr. Roskosch’s ETB Is A “Killer App”... Professional, Intuitive Expansive And Kept Up To Date! I Highly Recommend This App For All Good People... 73 KS4ML

This is just a great app!

This is just a fabulous app for anyone working with RF. Especially handy when designing equipment at the component level and almost everything you need is all in one app.

What a nice professional product. I use this app weekly, saves time from not getting on a workstation just to design or validate a simple circuit. Both RF-Toolbox Pro and Electronic TB Pro have been excellent references, and are always being improved/updated by Marcus. Thank you.

WOW....... After a 30 year break I decided to get back into Ham Radio and Electronics I stated in Boy scouts. Needless to say my math skills were never great and now pretty much gone, my military service took its toll. A few years ago I looked for this type of software but nothing like these were available, but tonight I found these two sets of tools and about hit the floor when I opened them, for me and others without an EE degree these tools include everything I need to not only troubleshoot equipment but now I think I’ll be able to build my own. I cannot say enough good things about these, check them out you won’t be sorry. Now if someone could develop programming tools for ATMELs and PICs I’ll be in heaven. Thank you for developing these awesome apps. Jim

Like the rest of his apps this is also great!

I have been in electronics as a technician, engineer, and ham radio operator for over 50 years. This is the best program of its kind considering the price.

This app is a breath of fresh air! Every time I'm in the middle of a project & I'm stumped, this app comes to the rescue. Unlike the ARRL handbook there is no wasted, high minded verbiage to sift through. Answers come quickly! Well thought out. Love it

I'm a lifetime electronics technician and can testify this is what gets you going in the right direction for most of your formula needs. I appreciate that the developer continues to support the app for well over a year since I bought it. Bugs squashed before I knew it was a problem.

I am hamradio operator and I find this app to be a fantastic source for a host of thing for reference, circuit design, circuit simulation, etc. It just keeps getting better.