| Subject: Re: What has he got that I havenīt part two |
Author:
iain
|
[
Next Thread |
Previous Thread |
Next Message |
Previous Message
]
Date Posted: 06:10:41 11/14/03 Fri
In reply to:
Corrigap
's message, "Re: What has he got that I havenīt part two" on 21:47:27 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
Sorry don't agree. Maybe a 150 is not big enough with a panny where you are. I haven't said otherwise. I'm just saying that "without a panny" or some equivalent box that works well in fringe areas it may not matter how big the dish is. I agree the only way to get more signal strength to the box is a bigger dish. But that won't help if the box can't use it properly. So what I mean is "you can't make a silk purse out of a sow's ear of a box".
Large dishes are expensive a 2nd hand panny costs around Ģ150. So I would start with the panny and work up with the dish if possible.
If you read the thread properly you'll see the original posting referred to a someone else in the area with an almost identical system. The question was "what's he got that I don't?". The answer is a different box.
I agree with you on the skew though. I've never found that made a lot of difference unless it's way out.
/Iain
[
Next Thread |
Previous Thread |
Next Message |
Previous Message
]
| |
Feedback: 