DVB-T Dongle

[wb4jfi at knology.net]

Yes.  Especially when the transmitter itself was only part of the equation. 
Higher peak power output might lead to a bigger copper pipe going up the 
tower, an antenna that could handle higher peak RF levels without arcing, 
and those issues also led to maybe needed more upgrading of the tower 
itself.  Most of us had already done the tower design work, and were already 
doing tower upgrades, sometimes to handle two TV antennas (analog and DTV). 
Going back and redoing those upgrades yet again would have been more costly 
and add delays to the timeline.  There were only so many tower riggers in 
the country, and I had to remove at least one rigger from a tower job for 
safety concerns, as they almost brought down one of our towers.

I think that going to COFDM would have required significant more 
transmitter, where a UHF three-cabinet/tube 8VSB transmitter was usable, at 
least five cabinets were necessary for equivalent coverage if COFDM was 
used.  Two-cabinets VSB could get away with a third with COFDM.

Encoders, exciters, demods, signal quality test equipment, etc..., would 
also need to be changed.  Us "early adopters" would have been especially hit 
hard with additional costs.


-----Original Message----- 
From: Mike O'Dell
Sent: Thursday, May 16, 2013 10:55 PM
To: William Fenn
Cc: tacos at amrad.org
Subject: Re: FW: DVB-T Dongle


very interesting indeed. i found the FCC report via google.

the bottom line was "not enough difference to make a difference",
certainly not when it was as late in the game and a lot of people
had spent a lot of money on shiny new 8-VSB transmitters.

    -mo


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