[linux-dvb] TT-1500 / TDA10046

Nicholas Fearnley nfearnley at dmpip.tv
Wed Feb 21 15:12:04 CET 2007

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 at dmpip.tv> 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  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
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> -- 
>   Jouni
>   jouni76 at fastmail.fm
> -- 
> http://www.fastmail.fm - A no graphics, no pop-ups email service

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