127 lines
5.0 KiB
Plaintext
127 lines
5.0 KiB
Plaintext
Quick Start for DXpedition Mode
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-------------------------------
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These notes are intended for operators already familiar with WSJT-X
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and FT8 mode. QSOs between the Dxpedition ("Fox") and other stations
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("Hounds") are completed with as little as one transmission per Hound,
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as in the following examples:
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----------------------------------------------------------------------------
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Fox (300-600 Hz) Hounds
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----------------------------------------------------------------------------
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1. CQ KH1DX AJ10
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2. KH1DX K1ABC FN42, KH1DX W9XYZ EN37, ...
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3. K1ABC KH1DX -13
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4. KH1DX K1ABC R-11
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5. K1ABC RR73; W9XYZ <KH1DX> -17
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6. KH1DX W9XYZ R-16
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7. W9XYZ RR73; G4AAA <KH1DX> -09
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8. ...
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----------------------------------------------------------------------------
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Everybody sets dial frequency to an agreed number and uses CAT control
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with Split Operation (either *Rig* or *Fake It*). Fox transmits up to
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5 signals simultaneously, at audio frequencies 300, 360, ... 540
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Hz. Hounds make initial calls (e.g., line 2 above) anywhere in the
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range 1000 - 4000 Hz. They send "R+rpt" 350 Hz above the frequency
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where Fox called them.
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INSTRUCTIONS FOR FOX
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--------------------
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1. Start WSJT-X in FT8 mode. Select *Fox* on the *Settings ->
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Advanced tab*. On the main window, check *Tx even/1st*, *Auto Seq*,
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and *Hold Tx Freq*; uncheck *Call 1st*. Set *Tx 300 Hz* and select
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Tab 3.
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2. In Fox mode the left window (called "Band Activity" in normal FT8
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mode) is labeled "Stations calling DXpedition <MyCall>". It will be
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filled with a sorted list of calling Hounds. You can sort by Call,
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Grid, S/N, Distance, or Random order by using the comboBox at top
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right of Tab 3. You can limit the displayed Hound callsigns to those
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no stronger than *Max dB*. Fox might use this feature to discourage
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Hounds from engaging in a QRO arms race.
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3. *N Slots* sets the number of simultaneous Fox signals to be used.
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Fox carries out as many as *N Slots* QSOs simultaneously.
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4. *Repeats* sets the maximum number of repeat transmissions of the
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same message. A QSO is aborted when this number would be exceeded.
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5. The *CQ* comboBox on Tab 3 offers a selection of directed CQ
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messages. *Reset* clears the QSO queue.
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6. The Fox operator's main task is to select Hounds to be called and
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worked. The text box on Tab 3 holds the "QSO queue": a list of Hound
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calls to be worked. Hit Enter to select the top callsign from the
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sorted list of callers (left window), or double-click on any
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particular call. Either actiion moves that Hound into the "QSO
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queue".
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7. The right window displays decodes of signals below 1000 Hz.
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Normally these should include only Hound messages containing "R+rpt"
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and Fox's own transmissions.
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8. To get things started, toggle *Enable Tx* to red. If a Hound call
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is available in the QSO queue, that station will be called. If the
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QSO queue is empty, Fox calls CQ.
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9. If you're using Nslots = 2 or higher, your signal no longer has
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a constant envelope. To avoid producing intermod sidebands you need
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to ensure linearity in your Tx system. One way to get things about right
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is to use the WSJT-X *Tune* button to generate a pure tone. Reduce the
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Tx audio level until your power output decreases by 10% or so. Use this
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level for your Fox transmissions.
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NOTE: If you are generating Nslots signals, the average power in each one
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will be 1/Nslots^2 of its normal value for single-signal transmissions.
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Nslots Relative dB
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-------------------
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1 0
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2 -6
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3 -9.5
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4 -12
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5 -14
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The following features are not yet implemented for Fox:
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1. Enforce all required settings
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2. Tx message timeout
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3. Manual abort of selected QSO
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4. All Tx and Rx messages to all.txt
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5. Additional sort criteria for Hound calls
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6. Selectable timeout for keeping Hounds in the sorted list
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7. Display number of active callers
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8. Display QSO rate
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INSTRUCTIONS FOR HOUND
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----------------------
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1. Start WSJT-X in FT8 mode. Select *Hound* On the *Settings ->
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Advanced* tab. On the main window check *Auto Seq* and uncheck *Tx
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even/1st*, *Call 1st*, and *Hold Tx Freq*. Set *Tx nnnn Hz* to some
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frequency between 1000 and 4000 Hz, and select *Tab 1*. Enter Fox's
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callsign and locator in DX Call and DX Grid, select Tx1, and start
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*Monitor*.
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2. When you have copied Fox, hit *Enable Tx* to call him. You may
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keep calling until he answers. You may wish to move your TxFreq
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around, hoping to find a clear calling frequency.
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3. When you are called by Fox with a signal report, your next
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transmission will automatically be sent as Tx3 ("R+rpt"). When Fox
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receives that message he responds with "RR73", and your QSO is
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complete!
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The following features are not yet implemented for Hound:
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1. Force all required settings
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2. React properly to directed CQs from Fox
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3. Disable Tx2, 4, 5, 6
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4. For Tx1, enforce TxFreq >= 1000 Hz
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