<p><strong>RF Toolbox</strong> is an antenna design and electronics/electrical tool package. It takes you step by step through the design of the following types of antennas:</p> 
<ul> 
	<li>Dipole</li> 
	<li>Fat Dipole</li> 
	<li>Yagi</li> 
	<li>Long Yagi</li> 
	<li>J-Pole</li> 
	<li>Super J-Pole</li> 
	<li>Log Periodic</li> 
	<li>Loop Antenna (MW Box Loop Antenna)</li> 
	<li>Cubic Quad</li> 
	<li>Vertical 1/8, 1/4, 3/8, 1/2, 5/8, 3/4, 7/8, and full wave</li> 
	<li>Helical</li> 
</ul> 

<h5>It also performs the following calculations:</h5> 
<ul> 
	<li>Transmission Line Calculator</li> 
	<li>Coil Design</li> 
	<li>LC Filter Design</li> 
	<li>Transmission Line Loss</li> 
	<li>L Matching Networks</li> 
	<li>Pi Matching Networks</li> 
	<li>Impedance Calculations</li> 
	<li>Wire Gauge and Resistance and Voltage Drop</li> 
	<li>Wire Inductance Calculations</li> 
	<li>dB Calculations</li> 
	<li>Resistor Series/Parallel Calculations</li> 
	<li>Resistor Color Code Calculations</li> 
	<li>Low and High Pass Butterworth and Chebyshev Filter Design</li> 
	<li>Thermal Noise Calculator</li> 
	<li>Pi Network Attenuator Calculator</li> 
	<li>Tee Network Attenuator Calculator</li> 
	<li>555 Timer Oscillator Calculator</li> 
	<li>RF Link Budget Calculator</li> 
	<li>Gamma Match Calculator</li> 
	<li>Skin Depth Calculator</li> 
	<li>Zener Diode Calculator</li> 
	<li>Parallel Line / Ladder line Calculator</li> 
	<li>Toroid Core Inductor Calculator</li> 
</ul>

Black Cat Systems

Antenna design and electronics calculation for ham radio.

Master new skills with handy tutorial apps that teach you literally everything — from touch typing to the periodic table.

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RF Toolbox

rf-toolbox

AI apps use artificial intelligence to automate tasks, analyze data, and deliver smart, personalized solutions.

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Select the best browser app to match your needs. We’ve got a wide variety of extensions to simplify your web surfing routine.

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Project Management

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Math

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Medical Education

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Music Education

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Reference Management

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Science

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Student

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Translation

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Education

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Accounting

Skip visiting your bank by downloading a banking app that simply does this job for you.

Banking

Automatically create and manage your invoices, get bill reminders, and live a happier, more organized financial life.

Billing

Pick a smart app for basic accounting, scientific computing,  calculating interests, or converting units.

Calculators & Converters

Whether you’re ready to start mining crypto, or just looking for rate trackers and digital wallets, you’re in the right place here.

Cryptocurrency

Create financial dashboards to analyze your business stats and make reliable forecasts.

Financial Analysis

Track stocks and get the latest market updates to make smart investments to help grow your money.

Investment Management

Spend less and save more by managing your daily expenses more effectively.

Personal Finance

Organize your data in beautiful spreadsheets, easily created with an automatic app.

Spreadsheet

Find profit-making opportunities with software that ensures trading stocks is easier than ever before.

Trading

Spending wisely and putting money away helps grow your savings. So let’s kit you out with the essential financial apps to help you count easier, invest better, and make financial predictions more accurate.

Finance

How fast can you react? Test your coordination by helping characters successfully overcome physical challenges.

Action

Explore the fictional worlds of RPG and adventure games, and hunt for hidden gems to make your character stronger.

Adventure

Hop on to play addictive arcade games — from retro classics to space mazes, you’ll find the one for you.

Arcade

Test your thinking and luck with the most popular board games, including chess, dominoes, backgammon,  mahjong, or tic-tac-toe.

Board Games

Play your favorite card game, featuring timeless classics like bridge, poker, or solitaire.

Card Games

Play like a pro: access cheat codes, connect joysticks, or emulate incompatible games with the help of these apps.

Gaming Tools & Utilities

Train your brain and solve the best puzzles we could find on the web.

Puzzles

Feel the speed and be the next champ by playing some exciting racing games.

Racing

Shoot true to take out enemies and leave the gaming battlefield as the only winner.

Shooting

Try living in someone’s shoes and experiencing a new profession, lifestyle, or even another world.

Simulation

Enjoy playing virtual sports with games realistic enough to make you feel ultra-engaged.

Sports

Keep your mind sharp by playing strategy games that make you think one step ahead at all times.

Strategy

Combat and defend to win virtual battles in your new favorite war game.

Give your brain a workout by solving numerous crosswords and addictive word puzzles.

Word Games

Indulge yourself in these fun games and discover new favorites. Our collection covers all game genres.

Games

Sculpt realistic models and create 3D design concepts using smart graphics and rendering tools.

3D Modeling

Whether you need to create simple animated GIFs, or a complex 3D animation, you’ll find the right app below.

Animation

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Authorship & Copyright

Automate drafting with CAD (computer-aided design) apps for architects and engineers that simulate how a design looks in the real world.

CAD Software

Easily create books, brochures, or booklets with automatic layouts and professional publishing features.

Desktop Publishing

Create clear flow charts and graphs to present  data in the most visually appealing way possible.

Diagrams & Graphs

Enjoy apps with hundreds of free and premium fonts that will help your artistic creations stand out.

Fonts

Generate icons from images, convert their format, or explore curated icon collections.

Icons

Create beautiful artworks using vector graphic apps with a rich drawing toolset.

Illustration

Master any document in the PDF format. Read, edit, convert, and sign them using life-saving PDF apps.

Unleash your creativity in Adobe Photoshop by adding plugins to enable the use of new effects, filters, or correction tools.

Photoshop Plug-ins

Whether you are a web designer, illustrator, or a graphic artist, you’ll find the right app here. Explore the font and icon packs, CAD and 3D modeling software, PDF converters, Photoshop plug-ins, or others.

Graphic Design

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Meditation & Relaxation

Try an app to track your personal calorie count or water balance to live healthier.

Nutrition

Track your workout exercises and enjoy a better yoga experience using smart helper apps.

Workout & Fitness

Get the most out of your wellness lifestyle with great apps to simplify your yoga routine, enhance meditation practice, or just eat healthier.

Health & Fitness

Keep your docs and photos in cloud storage. Share easier, access anywhere, and enjoy extra security for your files.

Cloud Storage

Use special download apps to capture entire websites and their audio or video content. Get torrent clients and management apps to organize your downloads.

Download Managers

Smart email clients will help you discover how much a mailbox can do.

Email Clients

Email Converters

Try smart software to personalize the look of your emails or easily back up your important inbox conversations.

Email Servers

Check out the easiest ways of transferring your files to cloud storage or other external devices.

File Sharing

FTP, or File Transfer Protocol apps, are designed to securely upload and download files directly from servers, which makes files accessible from anywhere with the internet connection.

FTP Software

Listen to live radio stations or record them using smart radio software.

Internet Radio Players

Send instant messages or make video calls with fast and secure chat apps.

Messengers

Use newsreader apps to catch up with the latest news stories and stay up to date with what’s going on worldwide.

Newsreaders

Watch TV on Mac when you want to. Access unavailable  TV channels with the help of handy apps.

Online TV Players

Use remote access tools to control your Mac or help others troubleshoot important issues.

Remote Management

Get instant updates from your favorite websites. Download an RSS reader and never miss a thing.

Create a personal local server or manage your web servers using special software.

Server Software

Experiment with social media interfaces, add new functions, or just share posts more easily.

Social Network Software

Browse our curated collection of messengers, email clients, file managers, and other apps to simplify your online experience.

Internet Utilities

Read QR codes, create your own ones, or scan barcodes using highly-rated reader apps.

Barcode

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Cooking

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Food & Drink

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Genealogy

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Kids

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Religion

What are you interested in? Whatever you answer, we might already have an app for that. Check out our transport, cooking, shopping, weather, or religion apps to simplify your everyday routine.

RF Toolbox: 4.0.0