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<blockquote data-quote="Channel Hopper" data-source="post: 1035593" data-attributes="member: 175144">I was working with two manufacturers of DVB receivers in the mid 90's, both expressed some interest in developing an enthusiast's set top box, and I gained some experience of swopping out filters within the tuners, improving the noise floor with additional shielding, and use of analogue PSUs to clean up the supply lines from the switched mode harmonics.The problem has always been the bigger market is always contractually tied with broadcasters, often fiancing to a degree the build of a particular model. They are the ones that use localised satellites for broadcasts, decent symbol rates for the transponders and subscriber benefits such as EPGs which has evolved into the OTT content, an alternative piece of equipment from the same supplier, able to receive transmissions from elsewhere could introduce regional competition.Additionally there was always a source code kept back by the original tuner engineers that made development of the demodulator processing to cope with the 'weak' signal (by weak I also mean low symbol rate, non-standard transport stream or other deficiency of the incoming signal ) near impossible to work together as one.</blockquote>

[QUOTE="Channel Hopper, post: 1035593, member: 175144"] I was working with two manufacturers of DVB receivers in the mid 90's, both expressed some interest in developing an enthusiast's set top box, and I gained some experience of swopping out filters within the tuners, improving the noise floor with additional shielding, and use of analogue PSUs to clean up the supply lines from the switched mode harmonics. The problem has always been the bigger market is always contractually tied with broadcasters, often fiancing to a degree the build of a particular model. They are the ones that use localised satellites for broadcasts, decent symbol rates for the transponders and subscriber benefits such as EPGs which has evolved into the OTT content, an alternative piece of equipment from the same supplier, able to receive transmissions from elsewhere could introduce regional competition. Additionally there was always a source code kept back by the original tuner engineers that made development of the demodulator processing to cope with the 'weak' signal (by weak I also mean low symbol rate, non-standard transport stream or other deficiency of the incoming signal ) near impossible to work together as one. [/QUOTE]

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