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antenna-theory.com

https://antenna-theory.com· First analyzed 16 May 2026· Updated 16 May 2026
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antenna-theory.com
Desktop screenshot of antenna-theory.com
Mobile screenshot of antenna-theory.com
Mobile

Sponsored

Hosting Provider

HostGator
hostgator.com

IP Address

192.185.32.66

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 Ashburn, United States

ASN

AS19871

Organization

HostGator.com LLC

Server

Apache

Nameservers

ns8065.hostgator.com.ns8066.hostgator.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
310 ms10%
Speed Index
403 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
694 KB
42 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
HostGator

Technology Stack

5 Technologies Detected

Analytics

2
Google Analytics
Google Analytics 4

Advertising

2
Google AdsGoogle AdSense

Web Servers

1
Apache

SEO Analysis

D53/100
13
11
0
Meta Tags7/15
Content11/12
Headings6/8
Technical8/21
E-E-A-T3/7
Images2/7
Links4/5
URL5/5
Social0/5
Freshness0/4
Mobile4/4
Indexability3/3
A
antenna-theory.comantenna-theory.com

The Antenna Theory Website

An intuitive tutorial of antennas and antenna theory. This website is designed to present a comprehensive overview of antennas, from design, to measurement ...

Description truncated.
Title Length26 chars

Recommended: 50-60 chars (~161px / 580px)

Description Length223 chars

Recommended: 120-160 chars

Issues (0)

    11 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: standard

    345 URLs

    robots.txt

    Local SEO

    Local Search Readiness

    3/100
    Poor
    1 14 2

    This site doesn't appear to be a local business. Local SEO signals are optional for non-local websites.

    Sponsored

    AI & LLM Readiness

    F35/100
    Bot Access
    20/25
    Machine Read.
    9/25
    Schema Data
    0/25
    Citation
    6/25

    AI Bot Access

    14/14 accessible
    AI Search
    OAI-SearchBot
    PerplexityBot
    Claude-SearchBot
    Gemini-Deep-Research
    DuckAssistBot
    Training
    GPTBot
    ClaudeBot
    Google-Extended
    Meta-ExternalAgent
    Bytespiderinfo
    Amazonbot
    Applebot-Extended
    CCBotinfo
    Fetch
    ChatGPT-User

    Machine Readability

    llms.txt
    llms-full.txt
    Semantic HTML
    Heading Hierarchy
    code blocks
    Text ratio:9%
    Words:551
    Token eff.:Optimal
    Sections/1K:1.8
    Depth:1/5

    Structured Data

    No Schema

    Citation Readiness

    Opening Summary19w
    Descriptive Headingsavg 6w
    Canonical URL
    Open Graph0/3
    Twitter Card0/3
    Language Tag
    Publish Date
    Author Info
    Lists
    Tables
    TL;DR / Summary
    About Page Link
    Recommendations (11)
    AI readiness recommendation preview...
    Upgrade to view recommendations

    Sponsored

    Accessibility

    WCAG 2.1 Compliance

    Evaluates how accessible your website is for users with disabilities, based on WCAG 2.1 guidelines. Checks images, forms, keyboard navigation, ARIA roles, and color contrast.
    C
    61/100
    7
    Passed
    6
    Critical
    1
    Warnings
    Images & Alt Text
    15/20
    Checks if images have descriptive alt text for screen readers and visually impaired users.
    Semantic Structure
    8/20
    Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.
    Forms & Inputs
    10/15
    Verifies form fields have labels, error messages are clear, and inputs are properly associated.
    Color & Contrast
    15/15
    Tests text-to-background color contrast ratios against WCAG AA/AAA minimum requirements.
    Keyboard & Focus
    9/15
    Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
    ARIA & Roles
    4/15
    Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
    4 recommendations
    • •Accessibility recommendation preview...
    Upgrade to view recommendations

    Carbon Footprint

    SWDM v4 · Eco-Score

    Carbon emissions estimated using the Sustainable Web Design Model v4 (SWDM v4). Factors in data center, network, and device energy across new and returning visitors. Grade thresholds based on HTTP Archive percentiles.
    37/100
    B
    86 mg
    CO₂e / view
    693.9 KB
    Page Weight
    80%
    Cleaner Than
    New Visitor
    98 mg
    vs
    Returning (cached)
    49 mg
    Annual (10K/mo)
    10.3 kg
    Emission Segments
    Data Center
    19 mg
    Network
    21 mg
    Device
    46 mg
    Resource Breakdown
    JavaScript
    380.6 KB
    Images
    172.0 KB
    HTML
    5.7 KB
    Other
    135.6 KB
    Green Hosting Not Verified
    HostGator
    5 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    F

    Security Score

    21%Critical
    Interactive

    HTTPS

    No WAF

    78d

    Certificate Details

    Type

    Domain Validated (DV)

    Certificate Authority

    Let's Encrypt

    Key Algorithm

    RSA (2048 bit)

    Signature

    SHA-256 with RSA

    TLS Version

    TLSv1.3

    HTTP Protocol

    HTTP/2

    Valid From

    05.05.2026

    Valid Until

    03.08.2026

    Subject Alternative Names (5)

    *.antenna-theory.com*.maxwells-equations.comantenna-theory.commaxwells-equations.comwww.maxwells-equations-com.antenna-theory.com

    SHA-256 Fingerprint

    6B:F4:B4:EB:11:46:40:77:B0:B9:B6:97:53:58:89:67:C5:89:25:1F...

    Top Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    content-encoding
    📦 Gzip(gzip)
    content-length
    5543
    content-type
    text/html; charset=UTF-8
    date
    Sat, 16 May 2026 16:17:25 GMT
    server
    Apache
    vary
    Accept-Encoding
    Good Warning Issue

    Email Infrastructure

    Custom Mail Server

    Score

    70

    SPF
    DKIM
    DMARC

    MX Records (1)

    mail.antenna-theory.com

    Domain Information

    antenna-theory.com

    Domain Age
    17y 9m

    Created

    22.08.2008

    Expires

    22.08.2026

    Last Updated

    07.08.2025

    Registrar

    Launchpad.com Inc.

    DNSSEC
    Not Enabled

    Privacy & Compliance

    Quantcast Choice

    Cookie Consent Banner
    Quantcast Choice
    Privacy Policy
    Terms of Service

    GDPR Indicators

    Cookie consent banner detected
    CMP: Quantcast Choice

    Mobile Compatibility

    Viewport & Responsive Test

    Tests how well your website works on mobile devices. Checks viewport configuration, responsive layout, touch targets, font readability, and simulates rendering across different screen sizes.
    D
    55/100
    Mobile Friendly1 breakpoint
    Viewport Meta
    The viewport meta tag tells mobile browsers how to scale the page. Without it, mobile devices render at desktop width.
    Responsive Design
    Uses CSS media queries or flexible layouts to adapt content to different screen sizes automatically.
    Touch Icons
    Apple touch icons and favicons displayed when users add the site to their home screen on mobile devices.
    Readable Font Size
    Base font size should be at least 16px on mobile to ensure text is readable without zooming.
    Relative Units
    Using em, rem, %, or vw instead of fixed px values allows content to scale properly across screen sizes.
    No H-Scroll Risk
    No elements wider than the viewport that would cause horizontal scrolling on mobile devices.
    Tap Targets OK
    Interactive elements (buttons, links) are at least 48x48px with enough spacing to prevent accidental taps.
    No Fixed Widths
    No elements with fixed pixel widths that could overflow on smaller screens and break the layout.
    Viewport
    width=device-width, initial-scale=1
    3 recommendations
    • •Mobile compatibility recommendation preview...
    Upgrade to view recommendations

    Typography & Readability

    Arial

    WCAG AAA
    84/100
    Readability
    /30
    24/30

    16px · LH 1.50

    Hierarchy
    /20
    16/20

    2x ratio · ✓ H1→H6

    WCAG
    /25
    24/25

    8.04:1 min contrast

    Performance
    /25
    20/25

    System fonts

    Heading Font

    Arial

    Sans32px

    Body Font

    Arial

    Sans16px

    Contrast Ratio

    8.04:1

    WCAG AAA (≥7:1)

    Reading Comfort

    ~43 CPL

    Narrow lines
    32px
    h1
    16px
    p

    ✅ Excellent readability: 16px body text is ideal for all devices.

    ✅ Optimal line spacing: 1.50 ratio (ideal range 1.4–1.6).

    ⚠️ Hard to read: Flesch score 37/100. Simplify sentences for wider reach.

    ✅ WCAG AAA contrast: All text meets 7:1 ratio (min 8.0:1).

    ✅ Perfect heading hierarchy: Sequential h1→h2→h3 with single H1 — ideal for SEO & accessibility.

    ✅ Strong hierarchy: Headlines are 2.0x larger than body text.

    Flesch 37

    Color Palette

    10 unique colors
    Dark
    #746966
    Other· 2.8%
    #fea153
    Primary· 75.79999999999998%
    #bfbaa4
    Secondary· 4.3%
    #b38e56
    Secondary· 3.9%
    #26383f
    Secondary· 3.4%
    #08090a
    Secondary· 2.8%
    #e18f5b
    Accent· 2.6%
    #6e4347
    Secondary· 1.7%

    Business & Marketing Stack

    2 Tools Detected

    Advanced

    Behavior Analytics

    1
    Google AnalyticsFree

    User behavior and product analytics

    Advertising

    1
    Google AdsEnterprise

    Ad platforms and retargeting pixels

    2

    Categories

    2

    Total Tools

    1

    Enterprise

    0

    Mid-Market

    Assessment: Well-developed marketing technology stack

    Ad Networks

    Google AdSense

    Sponsored

    Scripts & Styles

    10 Resources

    10
    Scripts
    0
    Styles
    8
    Async
    0
    Defer

    Top Script Sources

    pagead2.googlesyndication.com(5)fundingchoicesmessages.google.com(4)googletagmanager.com(1)

    Website Identity

    antenna-theory.com

    17 years old
    Location detected: 🇺🇸 United Statesvia ip
    Launchpad.com Inc.

    Sponsored

    Last analyzed: 16 May 2026 at 16:17

    Historical Analysis & Change Tracking