Re: Would the feeder make that much difference?
- From: "kim" <ntscuser@xxxxxxx>
- Date: Sun, 14 May 2006 14:56:57 +0100
"T i m" <news@xxxxxxxxxxxx> wrote in message
news:gc7c62p589laarrp64lj85cdtdibrvkcko@xxxxxxxxxx
Hi All,
A while ago I was given a Thompson FV STB and stuck it on the feeder
from the unused (currently using NTL analogue) aerial in the loft
(that had been working fine till they stuck Canary Warf between me and
Crystal Pal 18 miles away). Everything was fine according to the DTV
picture and the status readout (9 strength & 10 quality) but the same
signal fed into a PC DTV card resulted on picture hesitation and sound
loss (no 'breakup' us such).
I have emailed Pinnacle a couple of times asking if the PC spec could
be the cause (right on the 'minimum' limits) but as yet the automated
replies have yealded nothing ("Please run AV / Spyware yada yada ..).
So, as an experiment and step towards a bit of future proofing I
bought a Televes (1126) 'Infinito' wide band aerial and a 100m roll
of Webro WF100 and joined the two together today.
With the full 100m still on the roll and holding the aerial in my hand
downstaris next to the STB resulted in a ~ 4/10 signal strength and
~7/10 quality and a pretty good (broken now_and_again) picture?
I then stood the aerial in the bedroom (6' below the old one in the
loft) and the results went up to 6 / 8
So, the previous aerial yealded 9 and 10 I was suprised when we tested
the new aerial into the PC DTV card the picture reliability seemed
much improved (especially though 100m of feeder!) so I'm wondering if
it was noise rather than signal that was causing the breakup (sorry if
I'm slow to catch on here <g>) ?
It's not a straight comparison. Your new cable is still in virgin condition
whereas your existing installation presumably has cable-clamps in it at
regular intervals, sharp bends possibly and a coating of oxide which has
built up over the years on the terminations. All of these things will affect
its real-life performance. As a rule you should allow for a 6db drop in
performance over the life of an aerial installation so fitting a 6db
attenuator to the new lead will permit a truer comparison.
(kim)
.
- Follow-Ups:
- Re: Would the feeder make that much difference?
- From: T i m
- Re: Would the feeder make that much difference?
- References:
- Would the feeder make that much difference?
- From: T i m
- Would the feeder make that much difference?
- Prev by Date: Re: Alternatives to wall mounted sat. dishes
- Next by Date: Re: Distribution amplifier recommendations please
- Previous by thread: Re: Would the feeder make that much difference?
- Next by thread: Re: Would the feeder make that much difference?
- Index(es):
Relevant Pages
|
