-
-
Notifications
You must be signed in to change notification settings - Fork 7
Expand file tree
/
Copy pathfrequencies.html
More file actions
126 lines (116 loc) · 6.73 KB
/
Copy pathfrequencies.html
File metadata and controls
126 lines (116 loc) · 6.73 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
<!DOCTYPE html>
<html lang="en-GB">
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<title>Frequencies — OscarWatch Help</title>
<link rel="stylesheet" href="styles.css" />
</head>
<body>
<div class="wrap">
<header>
<div class="brand">
<a href="index.html" class="brand-home" title="Home"><img src="oscarwatch-icon.png" alt="" class="brand-icon" width="56" height="56" /></a>
<div class="brand-text">
<h1>Frequencies panel</h1>
<p class="tagline">Modes, Doppler, offsets, and CTCSS on the map</p>
</div>
</div>
<nav aria-label="Help topics">
<ul>
<li><a href="quick-start.html">Quick start</a></li>
<li><a href="map-and-sidebar.html">Map & sidebar</a></li>
<li><a href="frequencies.html" aria-current="page">Frequencies</a></li>
<li><a href="satellites.html">Satellites & TLEs</a></li>
<li><a href="passes.html">Pass planning</a></li>
<li><a href="radio-rotator.html">Radio & rotator</a></li>
<li><a href="settings.html">Settings</a></li>
<li><a href="keyboard-shortcuts.html">Shortcuts</a></li>
<li><a href="troubleshooting.html">Problems?</a></li>
</ul>
</nav>
</header>
<main>
<h2>Opening and moving the panel</h2>
<p>
When you select a satellite, a panel appears on the world map with that satellite’s name.
Drag it by the grey title bar (⠿) to move it out of the way. OscarWatch remembers the position.
</p>
<h2>Compact view</h2>
<p>
Click <strong>▼</strong> in the title bar to collapse the panel to a single line showing the satellite name,
mode, and live radio frequencies. Click <strong>▶</strong> to expand again. OscarWatch remembers whether you left it collapsed.
</p>
<h2>Transponder mode</h2>
<p>
Choose the mode you are working — for example Mode B (SSB), FM, or a digital mode.
Frequencies and Doppler behaviour come from the <strong>transponder database</strong>.
If no mode fits, see <a href="satellites.html">Satellites & TLEs</a> to add or edit entries.
</p>
<h2>Voice / CW (linear transponders)</h2>
<p>
For linear SSB voice modes (USB/LSB), use the <strong>Voice</strong> or <strong>CW</strong> buttons
in the frequency panel title bar (expanded view). <strong>CW</strong> sets transmit to CW; receive follows
<strong>Settings → Radio → Linear CW: keep receive in USB/LSB</strong> (usual split) or both VFOs to CW if
that option is off. OscarWatch remembers Voice/CW per satellite and mode, applies it to CAT and Cloudlog,
and you can press <strong>Ctrl+W</strong> to toggle quickly during a pass (<a href="keyboard-shortcuts.html">shortcuts</a>).
Voice and CW can each have their own stored <strong>RX and TX offsets</strong> — see below.
</p>
<h2>What the columns mean</h2>
<table>
<thead>
<tr><th></th><th>Uplink (TX)</th><th>Downlink (RX)</th></tr>
</thead>
<tbody>
<tr><td><strong>Sat</strong></td><td>Frequency at the spacecraft (nominal + Doppler)</td><td>Downlink at the spacecraft</td></tr>
<tr><td><strong>Radio</strong></td><td>What to set on your rig for transmit</td><td>What to set on your rig for receive (with Doppler applied)</td></tr>
</tbody>
</table>
<p>
For <strong>beacon-only</strong> satellites (uplink <strong>0</strong> in the database — SSTV, beacons, telemetry),
uplink shows as a dash. Only the <strong>downlink</strong> row is used for CAT. On ICOM satellite rigs, OscarWatch
turns satellite mode off and tunes <strong>Main</strong> on the correct band (2 m or 70 cm); see
<a href="radio-rotator.html#beacon-receive-only">receive-only overview</a>.
</p>
<h2>Offsets (kHz)</h2>
<p>
Many operators listen slightly off the nominal downlink — or transmit slightly off the nominal uplink — to find a clear spot in the passband.
Use the offset box or the step buttons (+10, +100, etc.) to nudge the selected leg in kHz.
The <strong>RX / TX</strong> toggle to the right of the spinner chooses which leg you are editing; <strong>both</strong> stored offsets apply to the displayed frequencies and to CAT at once.
See <a href="radio-offsets.html">When to use RX/TX offsets</a> for practical guidance.
See <a href="keyboard-shortcuts.html">Keyboard shortcuts</a> for numpad <strong>+</strong> / <strong>−</strong> (±10 Hz per press on the active leg).
</p>
<ul>
<li>Changes apply to the displayed frequencies and to CAT (when tracking is active).</li>
<li><strong>Store offset</strong> saves the offset for the active leg (RX or TX), this satellite, and transponder mode in your settings.</li>
<li>On linear SSB modes, <strong>Voice</strong> and <strong>CW</strong> each keep separate stored RX and TX offsets. The first time you switch to CW, OscarWatch starts from your voice offsets until you store CW values; toggling back restores the voice offsets.</li>
<li>On some satellites (reverse Doppler), you tune one leg on the radio yourself; the hint text under the panel explains this.</li>
<li>On <strong>beacon-only</strong> modes (no uplink), only RX offset is available — the TX toggle is hidden.</li>
</ul>
<h2>CTCSS</h2>
<p>
When a satellite uses tones, you may see <strong>Access</strong> and <strong>Arm</strong> in a dropdown.
Pick the tone required to open the repeater. OscarWatch can send the tone on CAT when your radio supports it.
</p>
<h2>Doppler correction (Full / TX / RX)</h2>
<p>
For modes with an uplink, three buttons under the frequency table choose how CAT applies Doppler
(remembered per satellite and transponder mode):
</p>
<ul>
<li><strong>Full</strong> — uplink and downlink both track Doppler (default).</li>
<li><strong>TX</strong> — TX fixed (SatPC32 TX-Fixed): only the downlink is corrected; uplink stays on your CQ spot — useful for roving SSB.</li>
<li><strong>RX</strong> — RX fixed (SatPC32 RX-Fixed): only the uplink is corrected.</li>
</ul>
<p>
Switching mode (e.g. RS-44 SSB vs FT4) restores each mode’s last choice. Beacon-only modes hide these buttons.
</p>
<h2>Doppler line</h2>
<p>
Shows the current Doppler correction in kHz. It updates as the satellite moves — largest near acquisition and loss of signal.
</p>
</main>
<footer><a href="index.html">Back to help home</a></footer>
</div>
</body>
</html>