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ATV DVB-T 70cm

Started by 9a4qv, 13. February. 2013, 15:47:42

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oe7dbh

New Dual Band ( 70cm and 23cm ) DVB-T Standalone Transmitter is ready for sale !!!
http://www.hides.com.tw/hot_eng.html   

Data: http://www.hides.com.tw/product_cg74468_eng.html   

Online shop: http://www.idealez.com/hides/home/en_US   


We are still waiting only on standalone DVB-T receiver for 70cm Band, 23cm Band with Downconverter.

vy 73 de Darko  OE7DBH
oe7dbh@tirol.com

Website:
http://www.dl1mfk.de/Sonstiges/Darko/   

9a4qv

Mislim da ces morati natjerati Tajvaneze da se prebace na DVB-T2 sto prije!

Na trzistu vec imamo cheap USB-DVB-T2, DVB-C, DVB-T, DVB-S itd donglove koji primaju sve te modulacije i kako ih reklamiraju jos su i SDR ready.
Naime, DVB-T2 podrzava bandwith kanala od 1.7MHz uz 70% vecu brzinu prijenosa za isti bandwith. DVB-T2 se bez ikakvog problema moze ugurati i na 50 MHz  8) (1.7MHz) a na 70cm bi bio idealan.
Uz sve to, puno je robusniji nego DVB-T a sve zahvaljujući rotiranoj konstelaciji OFDM-a.
Samom rotacijom poboljsava se S/N i sve ostalo sto taj benefit donosi.

Naravno kod DVB-T2 i dalje smo kod QPSK, 16QAM, 64QAM i kao novina 256QAM koja naravno dolazi do izražaja kod 10MHz bandwitha uz postojeće 6,7,8 i nove 1.7 i 5 MHz

QV

"I do not think that the wireless waves I have discovered will have any practical application."
Heinrich Rudolf Hertz

oe7dbh

...i zadnji problemi ( audio )  oko PC2TV softvera su rijeseni:
http://www.oe7forum.at/viewtopic.php?f=7&t=410&start=75#p1248


oe7dbh

New product of HiDes, a DVB-T  HD receiver for all bandwidths 2 ~ 8 Mhz, MPEG2 and H264, Frequenzrange 170 ~ 950 MHz, with remote control.
Test results on: http://www.oe7forum.at/viewtopic.php?f=7&t=410&start=120#p1309