Portsdown 2018 Band Switching - Revision history

G8GKQ: /* Relationship Between Presets and Bands */

2018-11-28T21:20:52Z

Relationship Between Presets and Bands

2018-11-28T21:20:26Z

Characteristics of Each Band

2018-07-05T15:25:22Z

Introduction

2018-07-05T15:17:49Z

Introduction

2018-07-05T15:16:59Z

Introduction

2018-07-05T15:12:06Z

Introduction

2018-07-05T15:10:00Z

Characteristics of Each Band

2018-07-05T15:08:40Z

Characteristics of Each Band

2018-07-05T15:07:30Z

Introduction

2018-07-05T15:04:20Z

Introduction

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   DATV Express Output Level
   DATV Express Port Settings
   LO Frequency (used to calculate Portsdown Output Frequency when Transverter Output frequency is entered)
   Contest Numbers

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 * The attenuator level that should be applied for the band
 * The DATV Express Transmit power level
-* The DATV Express port settings for the band.  This is a number between 0 and 15, corresponding to the binary configuration of the ports as described here [[Controlling_a_DATVExpress#Port_Switching_From_the_Touchscreen]].
+* The DATV Express and/or LimeSDR port settings for the band.  This is a number between 0 and 15, corresponding to the binary configuration of the ports as described here [[Controlling_a_DATVExpress#Port_Switching_From_the_Touchscreen]].
 * The LO frequency that should be applied when calculating the final output frequency if a transverter is being used.  Enter a negative number if it is a high-side LO.
 * The contest numbers to be displayed in Contest mode

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 ===Introduction===
-The Portsdown band switching has been extended in the Portsdown 2018 software to allow 8 or 9 discrete bands.  There are 2 types of bands, the direct bands and the transverter bands.  By default, the direct bands are used, and the specific band is defined by the transmit frequency.  Transverter bands can be selected from the Band/Tvtr menu on the main menu, and can also be stored and recalled in the presets.  The settings used for each band (including the transverter bands) can be selected from the "Set Band Details" button on Menu 3.
+The Portsdown band switching has been extended in the Portsdown 2018 software to allow 8 or 9 discrete bands.  There are 2 types of bands, the direct bands and the transverter bands.  By default, the direct bands are used, and the specific band is defined by the transmit frequency.  Transverter bands can be selected from the "Band/Tvtr" menu on the main menu, and can also be stored and recalled in the presets.  The settings used for each band (including the transverter bands) can be selected from the "Set Band Details" button on Menu 3.
   The bands are listed in this table.

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 |}
-The frequency-defined bands are used for direct transmission on the frequency generated.  If switching of outputs to transverters is required, the 8-band decode board and 8-band RF switch can be used to switch outputs top transverters independent of the frequency.  In this case, the frequency that the Portsdown-filter modulator board is operating at must be programmed on to the DIP switches on the 8band decode board as described here: [[8-Band_Decoder#Setting_the_VCO_Filter_for_Transverter_Bands]]
+The frequency-defined bands are used for direct transmission on the frequency generated.  If switching of outputs to transverters is required, the 8-band decode board and 8-band RF switch can be used to switch outputs to transverters independent of the frequency.  In this case, the frequency that the Portsdown-filter modulator board is operating at must be programmed on to the DIP switches on the 8-band decode board as described here: [[8-Band_Decoder#Setting_the_VCO_Filter_for_Transverter_Bands]]
 ===Characteristics of Each Band===

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 ===Introduction===
-The Portsdown band switching has been extended in the Portsdown 2018 software to allow 8 or 9 discrete bands.  The bands are listed in this table.
+The Portsdown band switching has been extended in the Portsdown 2018 software to allow 8 or 9 discrete bands.  There are 2 types of bands, the direct bands and the transverter bands.  By default, the direct bands are used, and the specific band is defined by the transmit frequency.  Transverter bands can be selected from the Band/Tvtr menu on the main menu, and can also be stored and recalled in the presets.  The settings used for each band (including the transverter bands) can be selected from the "Set Band Details" button on Menu 3.
 {| class="wikitable"

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 {| class="wikitable"
 |-
-! Band !! Freq Range !! Band<br/>Output<br/>MSB LSB !! Tvtr Line !! VCO Filter<br/>Needs<br/>MSB LSB !! 8-band RF<br/>Switch Output
+! Band !! Freq Range !! Band<br/>Output<br/>MSB LSB !! Tvtr Line !! VCO Filter<br/>Switching Signals<br/>MSB LSB !! 8-band RF<br/>Switch Output
 |-
 | 71 MHz || < 100 MHz ||  0 0 || 0 || 0 0 || 71

← Older revision		Revision as of 15:08, 5 July 2018
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	Note that, even for the bands not designated as a "transverter band" an LO frequency can be entered and it will be used in the calculations. The final output frequency should be entered on the keyboard (in an effort to save mental gymnastics).		Note that, even for the bands not designated as a "transverter band" an LO frequency can be entered and it will be used in the calculations. The final output frequency should be entered on the keyboard (in an effort to save mental gymnastics).
		+
		+	The DATV Express settings are not used unless DATV Express is selected as the output mode and a DATV Express board is connected.

	===Relationship Between Presets and Bands===		===Relationship Between Presets and Bands===

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 {| class="wikitable"
 |-
-! Band !! Freq Range !! Band<br/>Output<br/>MSB LSB !! Tvtr Line !! VCO Filter<br/>Needs<br/>MSB LSB
+! Band !! Freq Range !! Band<br/>Output<br/>MSB LSB !! Tvtr Line !! VCO Filter<br/>Needs<br/>MSB LSB !! 8-band RF<br/>Switch Output
 |-
-| 71 MHz || < 100 MHz ||  0 0 || 0 || 0 0
+| 71 MHz || < 100 MHz ||  0 0 || 0 || 0 0 || 71
 |-
-| 146 Mhz || 100 - 250 MHz || 0 1 || 0 || 0 1
+| 146 Mhz || 100 - 250 MHz || 0 1 || 0 || 0 1 || 146
 |-
-| 437 MHz || 250 - 950 MHz || 1 0 || 0 || 1 0
+| 437 MHz || 250 - 950 MHz || 1 0 || 0 || 1 0 || 437
 |-
-| 1255 MHz || 950 - 2000 MHz || 1 1 || 0 || 1 1
+| 1255 MHz || 950 - 2000 MHz || 1 1 || 0 || 1 1 || 1255
 |-
-| 2400 MHz || > 2000 MHz || 1 1 || 0 || 1 1
+| 2400 MHz || > 2000 MHz || 1 1 || 0 || 1 1 || 1255
 |-
-| Tvtr 1 || Any || 0 0 || 1 || Set by user on 8-band decode PCB
+| Tvtr 1 || Any || 0 0 || 1 || Set by user on 8-band decode PCB || T1
 |-
-| Tvtr 2 || Any || 0 1 || 1 || Set by user on 8-band decode PCB
+| Tvtr 2 || Any || 0 1 || 1 || Set by user on 8-band decode PCB || T2
 |-
-| Tvtr 3 || Any || 1 0 || 1 || Set by user on 8-band decode PCB
+| Tvtr 3 || Any || 1 0 || 1 || Set by user on 8-band decode PCB || T3
 |-
-| Tvtr 4 || Any || 1 1 || 1 || Set by user on 8-band decode PCB
+| Tvtr 4 || Any || 1 1 || 1 || Set by user on 8-band decode PCB || T4
 |}