| Subject: Re: What has he got that I havenīt part two |
Author:
Corrigap
|
[
Next Thread |
Previous Thread |
Next Message |
Previous Message
]
Date Posted: 21:47:27 11/13/03 Thu
In reply to:
iain
's message, "Re: What has he got that I havenīt part two" on 14:25:28 11/13/03 Thu
>>>2)What Corrigap said - how do you know you are on 2D
>>>and not 2A - I seem to have the right beam ( from
>>>memory it is 0002 and 07d4 ? ).
>>>
>>
>>No, what I said was;
>>
>>My next step would be to check the alignment of the
>>dish very carefully. Being perfectly aligned on 2a and
>>b does not necessarily guarantee perfect alignment on
>>2d. Sometimes, a movement of a couple of mm can make a
>>big difference.
>>
>>meaning that maximizing the signal is a lot more
>>difficult on 2d than it is on 2a/b. The significantly
>>lower power level (39 watts) from 2d makes exact
>>alignment extremely critical. You will need an
>>alignment that is absolutely spot-on for 2d.
>>Adjustments for 2d should always be done using 2d
>>(low-band)frequencies, whether you're using
>>professional equipment or just the signal bars on the
>>digibox. I found on many occasions when aligning my
>>dish that even just pressing lightly on the sides of
>>the dish (to give a horizontal movement) was enough to
>>affect the signal level noticeably, i.e. a movement of
>>no more than a few mm could lose or get back the
>>signal.
>>
>>If you are going to attempt to get a usable signal
>>from 2d in these parts on a 1.5m dish, then every link
>>in your signal chain has to be working at maximum
>>efficiency. But even if you do succeed in getting 24/7
>>reception in clear weather, you won't have any real
>>bad-weather margin to fall back on.
>>
>>BTW, I beg to differ with Rich about the Panny 30
>>being the answer to your problems. It's a good box but
>>it won't make a silk purse out of a sow's ear - if
>>you'll pardon the expression. I don't think any
>>digibox can cope with the deep trough that the 2d
>>signal falls into twice a day in this part of the
>>world (i.e. after 11.00 and again after 19.30)when
>>connected to a 1.5m dish. I struggled bravely with my
>>Panny 30 on a 1.5m Gibertini with an MTI flanged LNB
>>not a million miles away from you.
>>
>>I can't say, either, that I've ever noticed any
>>difference from tweaking the skew on any of the
>>dishes/LNBs that I've used.
>>
>>There's only one real fix for a weak signal - a bigger
>>dish.
>>
>>Corrigap
>
>
>It's not that simple. The system is only as good as
>the weakest part. Some boxes are simply no good in
>fringe areas even with a bigger dish (like you say
>silk purse/sows ear).
>It's because the tuners are not selective enough. The
>tuner picks up the stronger 2a/b signals and sets the
>gain according to those. A bigger dish may even make
>it worse!
>
>So start with a panny 30 and work from there.
>/iain
If you read the thread properly, you'll see that my comments about 'silk purse and sow's ear' were made in the context of a 1.5m dish not being enough *together with a panny 30* in this part of the world (southern Sweden). It was/is my belief that if Brian upgraded to a Panny 30 with his 1.5m dish, he would have got the same disappointing results that I had with that particular combination. He and I only live a short distance from each other.
I agree that some boxes are no good in fringe areas and that 'the system is only as good as its weakest part', which I more or less said in my post.
I was trying to pass on my own experience of having a 1.5m Gibertini and a panny 30, which was not a fully-working 2d system until I upgraded to a 1.8 m Channel Master. Now I have almost perfect reception 24/7. So in this particular case, based on personal experience, I don't agree that a new box is the way to go initially; the safer bet as far as I'm concerned would be a bigger dish first and *then* a better digibox, if necessary.
Corrigap
[
Next Thread |
Previous Thread |
Next Message |
Previous Message
]
| |
Feedback: 