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HamAntCal for iOS

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HamAntCal Analysis

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HamAntCal is an antenna calculator tailored for iPhone users, offering a user-friendly interface that simplifies the antenna construction process. It enables users to calculate the starting lengths required for a variety of antennas, including Dipole, Inverted Vee, and Vertical types. The application supports calculations for 1/8, 1/4, 1/2, 5/8, and Full Wave lengths, making it a versatile tool for amateur radio enthusiasts. Its compatibility with both metric and imperial measurement systems further enhances usability.

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The app has been optimized for 64-bit systems and iPhone X devices, ensuring smooth operation and a refreshed interface. An in-app purchase option provides access to additional features. Operating on iOS 8.2 and above, HamAntCal serves as a valuable resource for initial antenna design, although users are advised to make adjustments based on actual measurements with an antenna analyzer or SWR meter. Safety precautions should be observed when constructing antennas, particularly regarding power line proximity.

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HamAntCal 0/1
Icon of program: HamAntCal

HamAntCal for iOS

Download now

Used HamAntCal for iOS?

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Full Specifications

GENERAL
Release
Latest update
Version
3.5
OPERATING SYSTEMS
Platform
iOS
Operating System
iOS 16.4
POPULARITY
Total Downloads
19
Downloads Last Week
0
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Developer’s Description

By State Road 41 Apps LLC
HamAntCal Version 2.0 (Ham Antenna Calculator) will simply and intuitively calculate for you the starting length needed for constructing your...
HamAntCal Version 2.0 (Ham Antenna Calculator) will simply and intuitively calculate for you the starting length needed for constructing your antennas in feet/inches or in meters. It will calculate the starting length for "Dipole's", "Inverted Vee's", "Vertical's" and has a page for calculating 1/8, 1/4, 1/2, 5/8 and "Full Wave" length using the formula (468/frequency in Mhz) = 1/2 wave in feet and inches, (468/frequency in Mhz) / 2 = 1/4 wave etc. (For metric 142.6464/freq in Mhz for a half wave) The "Inverted Vee" calculator also uses this same formula plus a percentage added to the length of the antenna based on the angle of the wires down from horizontal.In this update:HamAntCal has been updated to take advantage of the larger screen size of the the new iphone5HamAntCal now has metric as well as feet/inchesMetric can be set as the default in the iPhone settings menu (go to the iPhone settings menu scroll down and look for HamAntCal)Able to switch between feet/inches and metric output on any pageEnter frequency on any antenna type and have it carry over to all other antenna types ("global frequency disabled" set to "OFF" in the settings menu)Enter different frequency for each antenna type (global frequency disabled set to "ON" in the settings menu)Click sounds have been added for keypad entry and auto calculation (able to turn sounds ON and OFF in the settings menu) --------------------------------------- I have come across a lot of different and conflicting information for calculating the length of an "Inverted Vee" antenna. Some say subtract 2 to 5 percent based on the angle of the wires. Others say to add a percentage based on the angle of the wires down from horizontal. I decided to test this before releasing this app. First I calculated for a "Dipole" using the "Dipole" calculator. Then I put together a "Dipole" with a support for the center insulator as well as the ends. I measured the resonant frequency with an antenna analyzer. Then I brought the ends down towards 45 degrees from horizontal. As the ends were lowered the resonant frequency increased. This means that the length of the "Inverted Vee" would need to be increased to stay resonant at the same frequency as the dipole. The "Inverted Vee" calculator has a slider that starts up with an angle of 45 degrees and can be adjusted down to 20 degrees continuously re-calculating as it is moved. This corresponds to about 4.5 to 2 percent added to the length of the "Inverted Vee". No antenna calculator can give exact results in every case. Much will depend on the wire used, the height above ground, the ground itself, nearby objects, etc. It's always a good practice to add a little extra wire and then trim up to the desired frequency. Please be safe while building your antennas. Always use the proper safety equipment. Never build your antenna where it can come in contact with power lines, this includes the supports as well as the antenna itself and feed lines. BE SAFE! Although I have had good results using this calculator the results are not guaranteed. Always add some extra length and trim the antenna to frequency (it's much easier to trim than it is to add wire to the antenna). Please feel free to contact me with suggestions, problems, compliments, ideas for improvements or additions to HamAntCal . Your ratings are appreciated. Thanks J.G. Even though this calculator will calculate from 30 Khz to 500Mhz it is intended for use from 1.8Mhz up to about 54 Mhz. Although it should be close enough for estimating the length of an antenna up to about 148 Mhz . This app requires iOS 5.0 or newer and has been tested on the iPhone 5, iPhone 4S, iphone4. Although not written for the iPad it ran fine on the iPad iOS 5.0 simulator and the ipad1 (as an iPhone size app).
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Content created and reviewed by Softonic with information obtained from State Road 41 Apps LLC, using AI.

CNET's editorial team was not involved in the creation of this content. Opinions, analysis and reviews were not provided by CNET.