Portsdown 2019 - Revision history

G8GKQ: /* Advanced features */

2021-08-25T09:06:43Z

Advanced features

2020-06-17T16:29:52Z

2020-06-17T16:21:21Z

Building the system

2020-06-17T16:20:28Z

2020-02-15T13:55:45Z

2019-10-29T20:04:58Z

Advanced features: receiver

2019-10-18T10:59:38Z

No Touchscreen or Advanced Options

2019-10-18T10:58:23Z

Waveshare 3.5 inch and Element 14 7 inch touch screens

2019-10-14T15:47:26Z

Specification

2019-10-14T15:47:03Z

Specification

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 *[[Calibrating the TouchScreen Alignment]]
 *[[FreqShow]] Displaying the received frequency spectrum
-*[[C920 Webcam|How to Use the C920 Webcam with the Portsdown]]
+*[[Portsdown_Webcams|How to Use the Webcams with the Portsdown]]
 *[[RTL-FM Receiver|An Integrated RTL-FM Audio Receiver]]
 *[[The_Portsdown_Receiver|The Portsdown Receiver using the LongMynd software]]

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-The Portsdown 2019 DATV system has been designed to provide an easy way to “get on air” with Digital ATV at a relatively low cost, covering all of the commonly used modes, thus enabling it to be used not only on ATV repeaters but also for RB-TV DX working.   Although still supported, the Portsdown 2019 system is no longer under active development.  The Portsdown 2020 system provides some better features, at the expense of some older features which are no longer supported; full details here [[Portsdown 2020]].
+The Portsdown 2019 DATV system has been designed to provide an easy way to “get on air” with Digital ATV at a relatively low cost, covering all of the commonly used modes, thus enabling it to be used not only on ATV repeaters but also for RB-TV DX working.
 The 2019 Portsdown is significantly different to previous versions in that the system no longer uses the custom built Filter Modulator card which has been replaced with an off-the-shelf LimeSDR Mini.  Overall the LimeSDR Mini is similar in cost to the F-M board as you no longer need an ADF4351 LO module and an LO filter PCB.
@@ Line 6: / Line 8: @@
 This guide is in a number of sections which cover detailed descriptions for hardware and software, how to build and configure the system, some advanced features and an FAQ.
 ===Specification===

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 The Portsdown 2019 uses the majority of the 2018 Portsdown hardware.
 *[[Portsdown2019 hardware]] Detailed description of the Portsdown 2019 hardware and a '''shopping list of what you need to buy and where to buy it'''.
 *[[Portsdown Displays]] Advice on what display to use with your Portsdown transmitter.

← Older revision		Revision as of 16:20, 17 June 2020
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	This guide is in a number of sections which cover detailed descriptions for hardware and software, how to build and configure the system, some advanced features and an FAQ.		This guide is in a number of sections which cover detailed descriptions for hardware and software, how to build and configure the system, some advanced features and an FAQ.

−	~~===Portsdown 2018===~~
−
−	~~Portsdown 2018 has been superseded by Portsdown 2019 but there is NO intention to discontinue support of the 2018 model.~~
−	Portsdown 2019 is recommended for all new builds but if you would still like an F-M board, we suggest you post on the wanted section of the forum - https://forum.batc.org.uk/viewforum.php?f=14 - or blank PCBs for home construction are still available here - [https://batc.org.uk/shop/portsdown-transmitter-filter-modulator-board-blank-pcb/ BATC shop item 10].
−
−	~~All the wiki information on Portsdown 2018 is still [[Portsdown 2018\|available here]].~~

	===Specification===		===Specification===

← Older revision		Revision as of 13:55, 15 February 2020
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−	The Portsdown 2019 DATV system has been designed to provide an easy way to “get on air” with Digital ATV at a relatively low cost, covering all of the commonly used modes, thus enabling it to be used not only on ATV repeaters but also for RB-TV Dx working.	+	The Portsdown 2019 DATV system has been designed to provide an easy way to “get on air” with Digital ATV at a relatively low cost, covering all of the commonly used modes, thus enabling it to be used not only on ATV repeaters but also for RB-TV DX working. Although still supported, the Portsdown 2019 system is no longer under active development. The Portsdown 2020 system provides some better features, at the expense of some older features which are no longer supported; full details here [[Portsdown 2020]].

	The 2019 Portsdown is significantly different to previous versions in that the system no longer uses the custom built Filter Modulator card which has been replaced with an off-the-shelf LimeSDR Mini. Overall the LimeSDR Mini is similar in cost to the F-M board as you no longer need an ADF4351 LO module and an LO filter PCB.		The 2019 Portsdown is significantly different to previous versions in that the system no longer uses the custom built Filter Modulator card which has been replaced with an off-the-shelf LimeSDR Mini. Overall the LimeSDR Mini is similar in cost to the F-M board as you no longer need an ADF4351 LO module and an LO filter PCB.

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 ====No Touchscreen or Advanced Options====
-If you do not have a Waveshare 3.5 inch screen or the Element 14 7 inch screen, or you wish to enter the system advanced set-up pages you will need to do an initial setup - see this guide for more details: [[Initial setup 2019]]
+If you do not have a Waveshare 3.5 inch screen or the Official Raspberry Pi 7" screen, or you wish to enter the system advanced set-up pages you will need to do an initial setup - see this guide for more details: [[Initial setup 2019]]
 ====LimeSDR Configuration====

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 Once you have completed your hardware build or have bought the RPi, display and LimeSDR Mini and just "want to try it", connect up the hardware and insert an pre-programmed SD card into SD slot on the RPi.
-====Waveshare 3.5 inch and Element 14 7 inch touch screens====
+====Waveshare 3.5 inch and Official Raspberry Pi 7" screens====
 A new or upgraded SD Card (version 201902070 or later) will also work out of the box with the either screen and is ready to use with no initial configuration required.  Connect the touchscreen (being very careful to align the pins on the Wavesahre correctly) and apply power to the RPi and the user interface menu 1 should appear.

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 ===Specification===
-The Portsdown 2019 will accept video input from a composite video source, the Pi camera, some WebCams or integrated stored test cards.  It will then encode these as MPEG-2 or H264 with stereo audio.  Note that video sources must be connected at boot.
+The Portsdown 2019 will accept video input from a composite video source, the Pi camera, some WebCams or integrated stored test cards.  It will then encode these as MPEG-2 or H264 with stereo audio.  Note that video sources must be connected during boot-up.
 * Frequency range - Using a LimeSDR Mini it will transmit DATV on frequencies between 30 MHz and 3.5 GHz.