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Add antenna quick reference guides to all mode sidebar panels

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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
This commit is contained in:
Claude
2026-02-05 22:09:59 +00:00
parent 6d1f8f022e
commit c83a2ef56f
9 changed files with 570 additions and 0 deletions
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60
templates/partials/modes/sstv.html
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@@ -39,4 +39,64 @@
Common modes: PD120, PD180, Martin1, Scottie1
</p>
</div>
<!-- Antenna Guide -->
<div class="section">
<h3>Antenna Guide</h3>
<div style="font-size: 11px; color: var(--text-dim); line-height: 1.5;">
<p style="margin-bottom: 8px; color: var(--accent-cyan); font-weight: 600;">
2m band (145.800 MHz) &mdash; stock SDR antenna will NOT work
</p>
<div style="background: var(--bg-primary); border: 1px solid var(--border-color); border-radius: 4px; padding: 10px; margin-bottom: 10px;">
<strong style="color: var(--accent-cyan); font-size: 12px;">V-Dipole (Easiest &mdash; ~$5)</strong>
<ul style="margin: 6px 0 0 14px; padding: 0;">
<li><strong style="color: var(--text-primary);">Element length:</strong> ~51 cm each (quarter-wave at 145.8 MHz)</li>
<li><strong style="color: var(--text-primary);">Angle:</strong> 120&deg; between elements for partial RHCP</li>
<li><strong style="color: var(--text-primary);">Orientation:</strong> Lay flat, angled toward the ISS pass direction</li>
<li><strong style="color: var(--text-primary);">Material:</strong> Wire, coat hanger, or copper rod</li>
</ul>
<p style="margin-top: 6px; color: var(--text-dim); font-style: italic;">
Same antenna as weather satellites (similar frequency). A QFH or turnstile for 137 MHz also works well here.
</p>
</div>
<div style="background: var(--bg-primary); border: 1px solid var(--border-color); border-radius: 4px; padding: 10px; margin-bottom: 10px;">
<strong style="color: var(--accent-cyan); font-size: 12px;">Tips for ISS Reception</strong>
<ul style="margin: 6px 0 0 14px; padding: 0;">
<li><strong style="color: var(--text-primary);">ISS altitude:</strong> ~420 km, overhead passes last 5&ndash;10 minutes</li>
<li><strong style="color: var(--text-primary);">Best passes:</strong> Elevation &gt; 30&deg; for clear signal</li>
<li><strong style="color: var(--text-primary);">Outdoors:</strong> Clear sky view is essential. Roof or open field</li>
<li><strong style="color: var(--text-primary);">LNA:</strong> Optional but helps &mdash; 2m filtered LNA at antenna feed</li>
<li><strong style="color: var(--text-primary);">Doppler:</strong> ISS moves fast &mdash; signal shifts &plusmn;3.5 kHz during pass</li>
</ul>
</div>
<div style="background: var(--bg-primary); border: 1px solid var(--border-color); border-radius: 4px; padding: 10px;">
<strong style="color: var(--accent-cyan); font-size: 12px;">Quick Reference</strong>
<table style="width: 100%; margin-top: 6px; font-size: 10px; border-collapse: collapse;">
<tr style="border-bottom: 1px solid var(--border-color);">
<td style="padding: 3px 4px; color: var(--text-dim);">ISS SSTV frequency</td>
<td style="padding: 3px 4px; color: var(--text-primary); text-align: right;">145.800 MHz</td>
</tr>
<tr style="border-bottom: 1px solid var(--border-color);">
<td style="padding: 3px 4px; color: var(--text-dim);">Quarter-wave length</td>
<td style="padding: 3px 4px; color: var(--text-primary); text-align: right;">51 cm</td>
</tr>
<tr style="border-bottom: 1px solid var(--border-color);">
<td style="padding: 3px 4px; color: var(--text-dim);">Modulation</td>
<td style="padding: 3px 4px; color: var(--text-primary); text-align: right;">FM (25 kHz)</td>
</tr>
<tr style="border-bottom: 1px solid var(--border-color);">
<td style="padding: 3px 4px; color: var(--text-dim);">Polarization</td>
<td style="padding: 3px 4px; color: var(--text-primary); text-align: right;">RHCP (circular)</td>
</tr>
<tr>
<td style="padding: 3px 4px; color: var(--text-dim);">Typical pass duration</td>
<td style="padding: 3px 4px; color: var(--text-primary); text-align: right;">5&ndash;10 min</td>
</tr>
</table>
</div>
</div>
</div>
</div>