| Subject: Re: Panasonic TU DSB20 |
Author:
JVT
|
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Date Posted: 03:16:41 01/15/04 Thu
In reply to:
Simon
's message, "Re: Panasonic TU DSB20" on 05:04:43 01/14/04 Wed
>>>Hello All. Can anyone tell me if the TU DSB20 uses
>>>different softwear to the TU DSB30?? And if so, it is
>>>more or less sensitive?? Have bid without success for
>>>a couple of 30's on e-bay and notice that the 20's go
>>>for quite a bit less. Am I far off the mark in
>>>assuming that the 30 is a 20 in a posher box;-)?
>>>Anyone ever compared the 2 back to back? Also is it
>>>necessary to periodicly download new soft wear for
>the
>>>reciever (I have heard it said) and if so how do you
>>>go about it?
>>
>>Simon,
>>
>>Both boxes use the same software downloaded from Sky
>>(Download from Sky with the box connected to the dish
>>via removing all power from the box, hold down the
>>"Backup" button on the box for at leat 10 secs while
>>re-applying power (i.e. re-insert power cable), an
>>auto-download will then occur from the satellite). In
>>terms of firmware, they have slightly different
>>versions. I have compared a number of different
>>manufacturer's boxes. The Panasonic TU DSB30 appeared
>>to performed better than the TU DSB20 using the same
>>dish and LNB and word on the street is that the 30
>>does perform better than the 20. The Amstrad DRX-100
>>came next and my Pace 2500S3 performed ok in the
>>fringe too. Best results todate from the Panasonic TU
>>DSB30 though as it has a good quality 4 way receiver,
>>hence why there appears to be a premium on these. They
>>can not be bought new now so you may just have to live
>>with the price you demand but it is worth it to ensure
>>that the receiver can distinguish the very weak 2D
>>signal. I can recommend that you try some secondhand
>>electronics shops in the UK.
>>
>>I've had no problems with the need for periodic
>>downloads with the TU DSB30 box.
>>
>>Suggest that you also obtain the Panafix2d module from
>>www.satcure.co.uk for use with either of these models.
>> Talk to Martin Pickering, he's very helpful.
>>
>>JVT
>>
>>>Cheers Simon
>
>Thanks for the reply JVT, did mail Martin, have dealt
>with him in the past, always quick and reliable. He
>sent me this reply:-
>
>>The design fault prevents the receiver from switching
>to >low band reliably. It has a major effect on low
>band >reception - often you don't get any!
>
>What does this mean in laymans terms, can you
>translate?? Thanks
>Simon
In laymans terms, what he means is that the Frequencies at which the LNB/receiver work at are divided into bands. The Astra2D frequencies are in the frequency range known as "Lo-band" i.e. 10.773 Ghz, 10.804 GHz etc. Standard Sky digiboxes are programmed to operate / default at the Hi-band end where the Sky frequencies normally are to be found.
Some of the Panasonic boxes have a design flaw which means that, perhaps as the box ages, the Lo-band selection is unstable and you end up not being able to tune the digibox to 2D frequencies.
When you re-tune to a Lo-band frequency (selecting 101, 102, 103 for BBC1, BBC2, ITV etc) the LNB is switched to Lo band by the digibox. If the digibox doesn't immediately find the Lo-band signal you send up with a "No Satellite Signal" found message. What the Panafix2D filter basically does is force the digibox to operate the LNB in "Lo-band" when you select 101, 102 etc or when you manually tune to a 2D frequency. The moment you select another frequency in Hi-band the digibox will drive the LNB to that range. The filter works really well, though sometimes it results in slower response time in re-selecting channels, say by a second or two more that without the filter.
Hope this helps.
JVT
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