Request for Question Clarification by
alienintelligence-ga
on
03 Sep 2003 14:00 PDT
Hi there drmayo5,
In addition to tutuzdad's questions,
Which satellite system are you using?
DishNetwork(Echostar), DirecTV, or
another?
Are you sure the problem isn't in the
switch? Is there a switch present?
No, it's not an on/off switch, it's
a piece of satellite hardware. They
are usually cheaper than an LNB also.
Have you talked to the manufacturer
yet?
Unless yours is a special or non-
mainstream brand, your LNB probably
can't be repaired if it has failed.
Replacement will be the most likely
option. They aren't that expensive
nowadays, you might even find one
on [ http://www.ebay.com/ ]
LNB on ebay
[ http://search.ebay.com/search/search.dll?cgiurl=http%3A%2F%2Fcgi.ebay.com%2Fws%2F&krd=1&from=R8&MfcISAPICommand=GetResult&ht=1&SortProperty=MetaEndSort&query=lnb
]
In reply to what exactly a LNB is,
it is essentially the main part
of the "satellite antenna" the part
that gathers the signal and sends
it downstream to your receiver.
What is LNB,LNC,LNBF...?
Date: 23.11.98 18:09:31
[ http://www.drdish.com/knowledge/9811/msg00251.html ]
"Question:
I'd like to know the difference between LNB,
LNBF, digital LNB, LNC?
M.TALEB"
"Answer from Dr.Dish:
To say it in a (hopefully) easy way:
LNB stands for LOW NOISE BLOC and consists in
one unit the LNA (Low Noise AMPLIFIER and the
LNC (LOW NOISE CONVERTER). In the old days,
both units where separated and even today on
commercial antennas.
LNBF is a LNB with integrated feed. Usual for
offset-dishes. This LNBFs are mainly used on
Direct to Home installations.
Digital LNB: there not much digital with this
type, but digital signals require a much more
stable local oscillator frequency (LOF) then
analog signals. That’s the difference. To get
rid of unwanted interception, the LOF of the
hi-band is changed from 10.750 GHz to 10.600
GHz.
And finally the LNC (see above) converts the
incoming signal from the satellite (3.6 to
4.2 GHz in the c-band and 10.700 to 12.750 in
ku-band) into a lower frequency (900 to 2150
MHz). A range your satellite receiver can
cope with."
thanks,
-AI
