what is an LNB standard size?

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Modicum

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#63149 21-Jun-2010 21:52

Hi
I recently purchased an LNB from freeviewshop- a 11-300 band-p-548
I found when it arrived that the diameter was too thick to fit the bracket for the current double thin pronged LNB.
When I notified the store that it was not suitable and asked for instructions to organise a refund I was then sent a link to purchase an additional bracket that increased the total purchase price by 60% with no further instruction. When I replied that I still would like to return the product as it is unsuitable ( I managed to source an old identical second hand LNB to fix the problem) and you cannot tell from the webpage photo or blurb what the dimensions are I got a rather abrupt reply telling me in no uncertain terms that the larger diameter is standard. When I look about at other LNBs in this area many have the same dual design. I don't want to make a big fuss as it was not particularly dear but I do not think I have been treated with courtesy, and I am too inexperienced to know whether the point he makes is valid.
Many thanks

cyril7

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#344121 22-Jun-2010 12:26

Hi the dual throat LNB is a Sky special, you cannot buy them from a 3rd party. A standard (and I mean international standard) LNB has a 40mm diameter collar, which is what you would have been supplied. I presume then freeview shop would have supplied you with a replacement mount that would accept the standard 40mm LNB in a Sky Winegard dish.

I dont think FreeView shop have done anything out of order here, as I say you cannot get Sky specific LNBs except if they fall of a truck or 2nd hand on Tardme

Cyril

farcus

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#344134 22-Jun-2010 13:00

yes - Freeviewshop have done nothing wrong. They have sent you what is probably a standard LNB. However, sounds like you have a sky dish installed which in most cases have the Sky dual lnb which is not a standard size so it really comes back on you - not freeviewshop.

Jaxson

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#344146 22-Jun-2010 13:34

The SKY dualthroat (oval/bigger) lnb is the standard SKY size.
However, SKY do not use a, internaltion standard lnb size, if that makes sense?

Freeviewshop have sent you a standard lnb size which will fit generic lnb holder brackets. Of course if you want to fit this to a SKY bracket it wont fit.

It's a bit of terminology and interpretation. The majority (my estimate) of freeview satellite set ups are utilising existing SKY dishes. On one hand that would make them the standard size for people watching freeview, but technically they are all using a non standard SKY custom lnb.

The dish is the same, it's just the bracket on the end of the dish arm that needs to be changed to fit a different standard sized LNB, which is probably the bracket freeviewshop recommended for you.

Modicum

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Geek

#344199 22-Jun-2010 15:45

Thanks very much for your informative replies, I understand the ambiguity now and perhaps understand why my email was so terse.

kiwisat

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#344244 22-Jun-2010 18:08

If you were to remove the plastic outer case of your new LNB there is very good chance that the metal case underneath will have the reduced throat diameter to suit the clamp of the Sky dish.

I also think that common courtesy should be conveyed, but call me old-fashioned.

I suspect from your experience that this is the only purchase you will make from this suppler.

Paul

farcus

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#344279 22-Jun-2010 19:55

I must agree that any communication I have had with freeviewshop (only a couple of occasions) it has seemed pretty abrupt. Hence only the couple of occasions that I have bothered with them.

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Modicum

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#344644 23-Jun-2010 19:06

hmm- removing the outer case sounds a good idea- but would it still be water tight?

kiwisat

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#344670 23-Jun-2010 20:22

Yes, still watertight, The plastic outer is cosmetic and perhaps functional in keeping the full heat of the sun from upsetting Local Oscillators, but most are die cast constructed from alloy and reasonably reflective. Try and keep the cap on the feed end intact as that stops spiders and the like from nesting on the probes. Go for it.

Paul