Latest revision as of 09:46, 9 January 2019

RpiDATV

RpiDATV is a software running on raspberry pi micro computer written by Evariste F5OEO (mail twitter). It encodes video and compute the QPSK baseband modulation.

History and updates

Latest version is now hosted on github. All instructions to build is there. Before that, complete SD image could be downloaded but size of download files is huge (1.2GBytes). Updates of image are also hard to maintain. In future, only some released versions could be built based on github sources.

First documentation UglyDATV01 is obsolete

You can look at HamRadio Presentation made at HamRadio 2015.

Main output modes of operation

RF output (formaly named Ugly mode)

RF could be transmitted without any other hardware through a pin of the Raspberry pi header. It is mainly a test mode as QPSK spectrum is not filtered. By using harmonics it could be received directly by a set top box on L band.

IQ

I/Q modulation is provided out of 2 pins of the GPIO header. Hardware I/Q modulator is needed : RBTVMOD, DigiLite, DigiThin , F4DAY, F1FAU , F1DOJ, old broadcast modulators.

DATV Express

Send IP Transport stream to datv express : Datv Express Server (G4GUO).

Parallel TS

This output the transport stream to an external modulator. Using this method, it is possible to upgrade an all-in-one encoder/modulator from MPEG-2 to H264.

DTX1 with dock PCB picture
SR-SYSTEM Minimod

Native interfaces

rpidatv could be configured through several ways

Command line
Menu on console (from local keyboard/screen or via network)
Graphical menu with a touchscreen : video demonstration

External interfaces

Audio/Video are sent from an external PC running VMix software : Vmix2Rpi

Credits

Brian G4EWJ : baseband DVB process for ARM cpu

INSPIRED BY THE IMPLEMENTATION OF PIFMDMA by Richard Hirst <richardghirst@gmail.com> December 2012

TestPage

@@ Line 8: / Line 8: @@
 Before that, complete SD image could be downloaded but size of download files is huge (1.2GBytes). Updates of image are also hard to maintain.
 In future, only some released versions could be built based on github sources.
 First documentation [[UglyDATV01]] is '''obsolete'''
-[[HamRadio Presentation]]
+You can look at [[HamRadio Presentation]] made at HamRadio 2015.
 == Main output modes of operation ==
@@ Line 17: / Line 18: @@
 === IQ ===
 I/Q modulation is provided out of 2 pins of the GPIO header.
-Hardware I/Q modulator is needed : [[RBTVMOD]], [http://www.g8ajn.tv/dlindex.html digilite],
+Hardware I/Q modulator is needed : [[RBTVMOD]], [http://www.g8ajn.tv/dlindex.html DigiLite],
-[http://www.batc.org.uk/forum/viewtopic.php?f=97&t=4145&sid=64b441d2c41529ad302e6287ca7684fc digithin] , [http://jf.fourcadier.pagesperso-orange.fr/television/exciter/exciter_e.htm F4DAY], [http://acauquelin.free.fr/site_f1fau/usb_fifo_qpsk.html F1FAU] , [http://f4agc.free.fr/ F1DOJ], [http://f6kbf.free.fr/pdf/RpiDATV%20IQ%20avec%20Modulateur%20DMD-2401.pdf old broadcast modulators].
+[https://forum.batc.org.uk/viewtopic.php?f=97&t=4145&sid=64b441d2c41529ad302e6287ca7684fc DigiThin] , [http://jf.fourcadier.pagesperso-orange.fr/television/exciter/exciter_e.htm F4DAY], [http://acauquelin.free.fr/site_f1fau/usb_fifo_qpsk.html F1FAU] , [http://f4agc.free.fr/ F1DOJ], [http://f6kbf.free.fr/pdf/RpiDATV%20IQ%20avec%20Modulateur%20DMD-2401.pdf old broadcast modulators].
 === DATV Express ===
@@ Line 25: / Line 26: @@
 === Parallel TS ===
 This output the transport stream to an external modulator. Using this method, it is possible to upgrade an all-in-one encoder/modulator from MPEG-2 to H264.
-* DTX1 with dock PCB [http://www.batc.org.uk/forum/download/file.php?id=367 picture]
+* DTX1 with dock PCB [https://forum.batc.org.uk/download/file.php?id=367 picture]
 * SR-SYSTEM Minimod
@@ Line 38: / Line 39: @@
 == Credits ==
-Brian G4EWJ : baseband QPSK process for arm
+Brian G4EWJ : baseband DVB process for ARM cpu
 INSPIRED BY THE IMPLEMENTATION OF PIFMDMA by Richard Hirst <richardghirst@gmail.com>  December 2012
 [[TestPage]]

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