From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail.kapsi.fi ([217.30.184.167]:50036 "EHLO mail.kapsi.fi" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752136Ab1FTVKv (ORCPT ); Mon, 20 Jun 2011 17:10:51 -0400 Message-ID: <4DFFB75A.8050808@iki.fi> Date: Tue, 21 Jun 2011 00:10:50 +0300 From: Antti Palosaari MIME-Version: 1.0 To: Markus Rechberger CC: Rune Evjen , linux-media@vger.kernel.org Subject: Re: PCTV nanoStick T2 290e (Sony CXD2820R DVB-T/T2/C) - DVB-C channel scan in mythtv - missing References: <4DF49E2A.9030804@iki.fi> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit List-ID: Sender: On 06/21/2011 12:04 AM, Markus Rechberger wrote: > On Mon, Jun 20, 2011 at 10:55 PM, Rune Evjen wrote: >> 2011/6/20 Markus Rechberger: >>> to tell the difference the amplifier is for DVB-T2, DVB-C is disabled >>> in windows because it's not reliable. >>> Technically the chip supports it but the LNA decreases the quality. >>> There are already some other PCI boards >>> out there with that chip which do not use that LNA which should have a >>> better performance with that Sony chip. >> >> Is it possible to work around this by disabling the lna or is the >> quality decreased permanently as part of the hardware design, >> independently of whether the lna is enabled or not ? >> >> I searched the linux-media list and it seems that an lna option was >> discussed as a module parameter, but modinfo for the module I use [1] >> (using the media_build git repository) doesn't show a lna parameter. >> Can the lna be disabled in another way ? >> > > no, otherwise it would be sold as full hybrid device. DVB-T2 is weak > that's why it was added. > Failing DVB-C would increase the device return rate, that's why it is > sold as DVB-T2 only. How the others have resolved that problem? Is that signal strength only issue when TDA18271 tuner is used? Antti -- http://palosaari.fi/