Yes, as there is no 5 volts, it should not affect antenna signal reception (with antenna without amp). So your problem is something else... Have you tested with w_scan: http://www.edafe.org/vdr/wscan.html It is sometimes easier to use, as it autoscans all frequencies, so it does not need any initial scanning data. On Wed, 21 Feb 2007 18:37:50 +0000, "Nicholas Fearnley" <nfearnley@xxxxxxxx> said: > The Jumper is removed, there is 0 volts provided on the antenna input > of the T-1500. > > The resistance of the antenna itself shows 3.3 Ohms which is quite > low, but as the booster is removed this should be OK I think? > > > On 21 Feb 2007, at 16:55, Jouni wrote: > > > > > You can check the antenna with ohm-meter, if it is near 0, then it > > would > > short the 5V supply. But if you disabled the 5V with jumper > > (checked it > > with voltmeter?) it would not make difference. > > > > > > > > On Wed, 21 Feb 2007 14:12:04 +0000, "Nicholas Fearnley" > > <nfearnley@xxxxxxxx> said: > >> I have removed the jumper on the card that provides the amp (there is > >> only one jumper). > >> > >> But as to whether or not the antenna still shorts I'm not sure. Can > >> I check with a multimeter? > >> > >> I read about turning off the amp (I2C 0x65) which means little to > >> me! It's on the wiki. > >> > >> > >> On 21 Feb 2007, at 10:44, Jouni wrote: > >> > >>> > >>> What type of antenna you are using? > >>> My TT-1500 will not get good signal, if the antenna shorts the 5V > >>> feed > >>> for antenna amp from > >>> the cards antenna in -connector. > >>> > >>> > >>> > >>> On Tue, 20 Feb 2007 23:37:06 +0000, "Nicholas Fearnley" > >>> <nfearnley@xxxxxxxx> said: > >>>> I have had real problems getting the TT-1500 (DVB-T) working. > >>>> > >>>> I have been using dvbtune for some diagnostics. > >>>> > >>>> The following should yield BBC Multiplex on my local transmitter > >>>> > >>>> dvbtune -c 0 -qam 16 -gi 32 -cr 3_4 -bw 8 -tm 2 -f 722000 > >>>> > >>>> It does not, I tried adding 166Khz (722166) but no luck. So I > >>>> tried > >>>> just working my way through some frequencies. I can get the > >>>> FE_STATUS to report FE_HAS_SIGNAL on some frequencies. I even get > >>>> FE_HAS_CARRIER on occasion but never any more than that. > >>>> > >>>> Does this mean the tuner is getting *something*. It's not > >>>> random for > >>>> sure, I always get this result on the few frequencies I have tried. > >>>> I am using 2.6.18.1. I know the signal (antenna) to be OK as I get > >>>> no issues with a CX based DVB-T module, on any frequency I pick. > >>>> This has to be a driver or settings issue. I compile the relevant > >>>> modules into the kernel, I get valid firmware loads in dmesg > >>>> (version > >>>> 20). > >>>> > >>>> I can insert relevant debugging code if needed - if anyone has any > >>>> ideas what might help. I can send a TT unit out if anyone needs > >>>> one > >>>> to test with. > >>>> > >>>> Nick > >>>> > >>>> > >>>> _______________________________________________ > >>>> linux-dvb mailing list > >>>> linux-dvb@xxxxxxxxxxx > >>>> http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb > >>> -- > >>> Jouni > >>> jouni76@xxxxxxxxxxx > >>> > >>> -- > >>> http://www.fastmail.fm - A no graphics, no pop-ups email service > >>> > >> > > -- > > Jouni > > jouni76@xxxxxxxxxxx > > > > -- > > http://www.fastmail.fm - Does exactly what it says on the tin > > > > > > _______________________________________________ > > linux-dvb mailing list > > linux-dvb@xxxxxxxxxxx > > http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb > > Nicholas Fearnley > Digital Media Projects Ltd > 1 City Square > Leeds > LS1 2ES > > t: 011 33 66 33 66 > m: 07796 147 320 > e: nfearnley@xxxxxxxx > w: www.dmpip.tv > > Disclaimer: > > This email and any files transmitted with it are confidential and > intended solely for the use of the individual or entity to whom they > are addressed. If you have received this email in error please notify > the system manager. Please note that any views or opinions presented > in this email are solely those of the author and do not necessarily > represent those of the company. Finally, the recipient should check > this email and any attachments for the presence of viruses. The > company accepts no liability for any damage caused by any virus > transmitted by this email. > > > -- Jouni jouni76@xxxxxxxxxxx -- http://www.fastmail.fm - mmm... Fastmail... _______________________________________________ linux-dvb mailing list linux-dvb@xxxxxxxxxxx http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
