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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
121 lines
6.5 KiB
HTML
121 lines
6.5 KiB
HTML
<!-- RTLAMR UTILITY METER MODE -->
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<div id="rtlamrMode" class="mode-content">
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<div class="section">
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<h3>Frequency</h3>
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<div class="form-group">
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<label>Frequency (MHz)</label>
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<input type="text" id="rtlamrFrequency" value="912.0" placeholder="e.g., 912.0">
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</div>
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<div class="preset-buttons">
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<button class="preset-btn" onclick="setRtlamrFreq('912.0')">912.0 (NA)</button>
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<button class="preset-btn" onclick="setRtlamrFreq('868.0')">868.0 (EU)</button>
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<button class="preset-btn" onclick="setRtlamrFreq('915.0')">915.0</button>
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</div>
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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="text" id="rtlamrGain" value="0" placeholder="0-49 or 0 for auto">
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</div>
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<div class="form-group">
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<label>PPM Correction</label>
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<input type="text" id="rtlamrPpm" value="0" placeholder="Frequency correction">
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</div>
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<div class="form-group">
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<label>Message Type</label>
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<select id="rtlamrMsgType">
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<option value="scm">SCM (Standard Consumption Message)</option>
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<option value="scm+">SCM+ (Enhanced)</option>
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<option value="idm">IDM (Interval Data Message)</option>
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<option value="netidm">NetIDM (Network IDM)</option>
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<option value="r900">R900 (Neptune)</option>
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<option value="r900bcd">R900 BCD</option>
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<option value="all">All Types</option>
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</select>
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</div>
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<div class="form-group">
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<label>Filter by Meter ID (optional, comma-separated)</label>
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<input type="text" id="rtlamrFilterId" placeholder="e.g., 12345678,87654321">
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</div>
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</div>
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<div class="section">
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<h3>Protocols</h3>
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<div class="info-text" style="margin-bottom: 10px;">
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rtlamr decodes utility meter transmissions (water, gas, electric) using ERT protocol.
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</div>
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<div class="checkbox-group">
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<label>
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<input type="checkbox" id="rtlamrUnique" checked onchange="toggleRtlamrUnique()">
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Unique Messages Only
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</label>
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<label>
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<input type="checkbox" id="rtlamrLogging" onchange="toggleRtlamrLogging()">
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Enable Logging
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</label>
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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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ISM 900 MHz band — stock antenna is close but not optimal
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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;">Stock Telescopic Antenna</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);">912 MHz:</strong> Extend to ~8.2 cm (quarter-wave). The stock antenna is close enough to work</li>
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<li><strong style="color: var(--text-primary);">Range:</strong> Most meters transmit at ~100 mW, expect 50–200 m range with stock antenna</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;">Upgraded 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);">Ground Plane:</strong> 8.2 cm vertical + four 8.2 cm radials at 45° on SMA connector</li>
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<li><strong style="color: var(--text-primary);">Yagi:</strong> Directional for targeting specific meters at distance (~$15–25)</li>
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<li><strong style="color: var(--text-primary);">Placement:</strong> Near a window facing the meters. Line-of-sight matters most</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);">Frequency (NA)</td>
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<td style="padding: 3px 4px; color: var(--text-primary); text-align: right;">912 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);">Frequency (EU)</td>
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<td style="padding: 3px 4px; color: var(--text-primary); text-align: right;">868 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);">912 MHz λ/4</td>
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<td style="padding: 3px 4px; color: var(--text-primary); text-align: right;">8.2 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);">Meter TX power</td>
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<td style="padding: 3px 4px; color: var(--text-primary); text-align: right;">~100 mW</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="startRtlamrBtn" onclick="startRtlamrDecoding()">
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Start Listening
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</button>
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<button class="stop-btn" id="stopRtlamrBtn" onclick="stopRtlamrDecoding()" style="display: none;">
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Stop Listening
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</button>
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</div>
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