[amsat-bb] Re: 2 Meter TV Interference
Gordon JC Pearce
gordonjcp at gjcp.net
Wed Dec 7 13:48:26 PST 2011
On Wed, 07 Dec 2011 09:20:19 -0500
Glenn Little WB4UIV <glennmaillist at bellsouth.net> wrote:
> This is probably front end overload on a TV without a front end.
> Can you spell SDR?
> The TV may now be using this technology.
Even TV frontends that *do* use SDR use extensive filtering and a downconverter to go from the UHF input to a fairly "normal" 40MHz-ish IF.
> A digital TV MUST receive all of the packets to display a useable picture.
> If it looses enough packets, it will not decode anything.
> You probably cannot fix the problem with this TV.
I don't see why you couldn't. You just need to get rid of that grubby little splitter, and fit a highpass filter to keep the VHF signal out. I do this all the time.
Gordon JC Pearce MM0YEQ <gordonjcp at gjcp.net>
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