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Each SDR mode now includes frequency-specific antenna guidance: - Pager: VHF/UHF dipole info for 153/929 MHz bands - 433 MHz Sensors: quarter-wave ground plane for ISM band - Utility Meters: 912 MHz stock antenna tips and upgrades - APRS: 2m band dipole and commercial options for 144.39 MHz - SSTV: V-dipole for ISS reception at 145.800 MHz - AIS: marine VHF antenna for 162 MHz vessel tracking - Listening Post: wideband discone recommendation with band table - Meshtastic: LoRa 915/868 MHz antenna upgrades and placement - ADS-B: 1090 MHz collinear, commercial options, LNA/placement Each guide includes antenna type, element lengths, placement tips, and a quick reference table with key specs for the mode. https://claude.ai/code/session_01FjLTkyELaqh27U1wEXngFQ
189 lines
9.7 KiB
HTML
189 lines
9.7 KiB
HTML
<!-- AIS VESSEL TRACKING MODE -->
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<div id="aisMode" class="mode-content" style="display: none;">
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<div class="section">
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<h3>AIS Vessel Tracking</h3>
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<div class="info-text" style="margin-bottom: 15px;">
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Track ships and vessels via AIS (Automatic Identification System) on 161.975 / 162.025 MHz.
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</div>
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<a href="/ais/dashboard" target="_blank" class="run-btn" style="display: inline-block; text-decoration: none; text-align: center; margin-bottom: 15px;">
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Open AIS Dashboard
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</a>
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</div>
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<div class="section">
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<h3>Settings</h3>
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<div class="form-group">
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<label>Gain (dB, 0 = auto)</label>
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<input type="number" id="aisGainInput" value="40" min="0" max="50" placeholder="0-50">
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</div>
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</div>
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<div class="section">
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<h3>Status</h3>
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<div id="aisStatusDisplay" class="info-text">
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<p>Status: <span id="aisStatusText" style="color: var(--accent-yellow);">Standby</span></p>
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<p>Vessels: <span id="aisVesselCount">0</span></p>
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</div>
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</div>
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<!-- Antenna Guide -->
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<div class="section">
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<h3>Antenna Guide</h3>
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<div style="font-size: 11px; color: var(--text-dim); line-height: 1.5;">
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<p style="margin-bottom: 8px; color: var(--accent-cyan); font-weight: 600;">
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Marine VHF band (162 MHz) — stock SDR antenna will NOT work well
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</p>
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<div style="background: var(--bg-primary); border: 1px solid var(--border-color); border-radius: 4px; padding: 10px; margin-bottom: 10px;">
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<strong style="color: var(--accent-cyan); font-size: 12px;">Simple Dipole (Cheapest)</strong>
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<ul style="margin: 6px 0 0 14px; padding: 0;">
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<li><strong style="color: var(--text-primary);">Element length:</strong> ~46 cm each (quarter-wave at 162 MHz)</li>
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<li><strong style="color: var(--text-primary);">Material:</strong> Wire, coat hanger, or copper rod</li>
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<li><strong style="color: var(--text-primary);">Orientation:</strong> Vertical (AIS is vertically polarized)</li>
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<li><strong style="color: var(--text-primary);">Placement:</strong> As high as possible with clear view of the water/harbor</li>
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</ul>
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</div>
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<div style="background: var(--bg-primary); border: 1px solid var(--border-color); border-radius: 4px; padding: 10px; margin-bottom: 10px;">
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<strong style="color: var(--accent-cyan); font-size: 12px;">Commercial Options</strong>
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<ul style="margin: 6px 0 0 14px; padding: 0;">
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<li><strong style="color: var(--text-primary);">Marine VHF whip:</strong> ~$20–50, designed for 156–163 MHz band</li>
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<li><strong style="color: var(--text-primary);">Discone:</strong> ~$30–50, wideband coverage including marine VHF</li>
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<li><strong style="color: var(--text-primary);">Collinear:</strong> Higher gain (~6 dBi), best for coastal monitoring</li>
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</ul>
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</div>
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<div style="background: var(--bg-primary); border: 1px solid var(--border-color); border-radius: 4px; padding: 10px; margin-bottom: 10px;">
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<strong style="color: var(--accent-cyan); font-size: 12px;">Placement Tips</strong>
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<ul style="margin: 6px 0 0 14px; padding: 0;">
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<li><strong style="color: var(--text-primary);">Height is critical:</strong> AIS is line-of-sight. Roof or mast mount is ideal</li>
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<li><strong style="color: var(--text-primary);">Range:</strong> At 10m height, expect ~25 NM (46 km) range over water</li>
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<li><strong style="color: var(--text-primary);">LNA:</strong> Nooelec Lana or similar broadband LNA, mount at antenna</li>
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<li><strong style="color: var(--text-primary);">Coax:</strong> Keep cable short. RG-58 loses ~4 dB per 10m at 162 MHz</li>
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</ul>
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</div>
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<div style="background: var(--bg-primary); border: 1px solid var(--border-color); border-radius: 4px; padding: 10px;">
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<strong style="color: var(--accent-cyan); font-size: 12px;">Quick Reference</strong>
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<table style="width: 100%; margin-top: 6px; font-size: 10px; border-collapse: collapse;">
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<tr style="border-bottom: 1px solid var(--border-color);">
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<td style="padding: 3px 4px; color: var(--text-dim);">AIS Channel A</td>
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<td style="padding: 3px 4px; color: var(--text-primary); text-align: right;">161.975 MHz</td>
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</tr>
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<tr style="border-bottom: 1px solid var(--border-color);">
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<td style="padding: 3px 4px; color: var(--text-dim);">AIS Channel B</td>
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<td style="padding: 3px 4px; color: var(--text-primary); text-align: right;">162.025 MHz</td>
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</tr>
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<tr style="border-bottom: 1px solid var(--border-color);">
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<td style="padding: 3px 4px; color: var(--text-dim);">Quarter-wave length</td>
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<td style="padding: 3px 4px; color: var(--text-primary); text-align: right;">46 cm</td>
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</tr>
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<tr style="border-bottom: 1px solid var(--border-color);">
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<td style="padding: 3px 4px; color: var(--text-dim);">Modulation</td>
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<td style="padding: 3px 4px; color: var(--text-primary); text-align: right;">GMSK 9600 baud</td>
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</tr>
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<tr style="border-bottom: 1px solid var(--border-color);">
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<td style="padding: 3px 4px; color: var(--text-dim);">Bandwidth</td>
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<td style="padding: 3px 4px; color: var(--text-primary); text-align: right;">25 kHz</td>
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</tr>
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<tr>
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<td style="padding: 3px 4px; color: var(--text-dim);">Polarization</td>
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<td style="padding: 3px 4px; color: var(--text-primary); text-align: right;">Vertical</td>
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</tr>
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</table>
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</div>
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</div>
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</div>
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<button class="run-btn" id="startAisBtn" onclick="startAisTracking()">
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Start AIS Tracking
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</button>
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<button class="stop-btn" id="stopAisBtn" onclick="stopAisTracking()" style="display: none;">
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Stop AIS Tracking
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</button>
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</div>
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<script>
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let aisEventSource = null;
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let aisVessels = {};
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function startAisTracking() {
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const gain = document.getElementById('aisGainInput').value || '40';
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const device = document.getElementById('deviceSelect')?.value || '0';
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fetch('/ais/start', {
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method: 'POST',
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headers: { 'Content-Type': 'application/json' },
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body: JSON.stringify({ device, gain, bias_t: typeof getBiasTEnabled === 'function' ? getBiasTEnabled() : false })
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})
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.then(r => r.json())
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.then(data => {
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if (data.status === 'started' || data.status === 'already_running') {
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document.getElementById('startAisBtn').style.display = 'none';
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document.getElementById('stopAisBtn').style.display = 'block';
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document.getElementById('aisStatusText').textContent = 'Tracking';
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document.getElementById('aisStatusText').style.color = 'var(--accent-green)';
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startAisSSE();
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} else {
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alert(data.message || 'Failed to start AIS tracking');
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}
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})
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.catch(err => alert('Error: ' + err.message));
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}
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function stopAisTracking() {
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fetch('/ais/stop', { method: 'POST' })
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.then(r => r.json())
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.then(() => {
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document.getElementById('startAisBtn').style.display = 'block';
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document.getElementById('stopAisBtn').style.display = 'none';
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document.getElementById('aisStatusText').textContent = 'Standby';
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document.getElementById('aisStatusText').style.color = 'var(--accent-yellow)';
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document.getElementById('aisVesselCount').textContent = '0';
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if (aisEventSource) {
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aisEventSource.close();
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aisEventSource = null;
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}
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aisVessels = {};
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});
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}
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function startAisSSE() {
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if (aisEventSource) aisEventSource.close();
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aisEventSource = new EventSource('/ais/stream');
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aisEventSource.onmessage = function(e) {
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try {
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const data = JSON.parse(e.data);
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if (data.type === 'vessel') {
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aisVessels[data.mmsi] = data;
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document.getElementById('aisVesselCount').textContent = Object.keys(aisVessels).length;
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}
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} catch (err) {}
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};
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aisEventSource.onerror = function() {
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setTimeout(() => {
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if (document.getElementById('stopAisBtn').style.display === 'block') {
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startAisSSE();
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}
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}, 2000);
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};
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}
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// Check initial status
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fetch('/ais/status')
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.then(r => r.json())
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.then(data => {
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if (data.tracking_active) {
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document.getElementById('startAisBtn').style.display = 'none';
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document.getElementById('stopAisBtn').style.display = 'block';
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document.getElementById('aisStatusText').textContent = 'Tracking';
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document.getElementById('aisStatusText').style.color = 'var(--accent-green)';
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document.getElementById('aisVesselCount').textContent = data.vessel_count || 0;
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startAisSSE();
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}
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})
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.catch(() => {});
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</script>
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