Different Frequency Scans

[Vault Dweller]

Hi,

I have just bought and set u my first open box, a Skybox F5 and I love it.

One thing I am struggling with is once I have preformed a blind scan with the LNB frequency set to its widest band, Universal (9750-10750), it picks up the majority of channels but not all of them, i.e Eurosport and some music and film channels.

However, thinking I just haven't aligned my dish properly, I thought I'd have a play anyway and once clearing the channels and re-scanning on a set frequency (11300) it pick up these channels and not the original ones.

So now knowing I can receive them, I'm just left with the task of combining these channels on my channel list. The only problem is that once they are added (with many duplicates) to my list, it will again only let me view either set and not both?!

Is there a way to allow me to watch everything on on one list?

I have aslo tried downloading AJ's channel list, but once installed most of the channels display no signal.

Many thanks,

[Nutsandbolts]

Hi. If your dish is properly aligned and channels have been tuned in then you should be able to view them from one list. You could also try the blind scan again but delete all the TP's before doing it. This will eliminate duplicates and will tell you if dish is aligned properly as well.

Regards

[Hadron]

...One thing I am struggling with is once I have preformed a blind scan with the LNB frequency set to its widest band, Universal (9750-10750), it picks up the majority of channels but not all of them, i.e Eurosport and some music and film channels...

I had a similar problem.

When I set up my first Openbox I thought that setting the LNB to it's widest frequency range would be the obvious choice, but it wasn't.

To get all the channels I had to set it to 9750-10600. Give that a go & rescan.

[Vault Dweller]

Thanks for your advice. I have deleted all of the TP's (something i didn't know you could do)

Rescanned at 9750 - 10600 but got slightly less channels.

One thing I did notice was that now looking at the TP list the following failed...

12110 - 27500 V
12524 - 27500 V
12554 - 27497 V
12607 - 27500 V
12587 - 27500 V

These are not all of the "V" positioned TP's but I'm guessing these are my missing channels.

This would lead me to think that my dish is not aligned, but I have received them before on a different frequency scan.

[Nutsandbolts]

Hi. i suspect problem is because you have LNb set incorrectly. Set it to 9750-10750 as before and missing channels should appear like magic. i would redo the blind scan after deleting the TP's first.
Regards.

[digicon]

You have the LNB setting correct which is 9750-10600 do not set it to anything else this is the KU Universal frequency band

Taken from the Wiki:

A Universal LNB has a switchable local oscillator frequency of 9.75/10.60 GHz to provide two modes of operation ***8211; low band reception (10.70-11.70 GHz) and high band reception (11.70-12.75 GHz).

[Hadron]

Vault Dweller...you will get some frequencies failing as they are not all used (e.g. 12110V, 12554V, 12587V) Don't know why 12542 & 12607 failed though unless your dish does need a tweak. Those higher frequency transponders come from the Eutelsat satellite which are weaker & slightly offset to those from the Astra satellites.

Hi. i suspect problem is because you have LNb set incorrectly. Set it to 9750-10750 as before and missing channels should appear like magic. i would redo the blind scan after deleting the TP's first.
Regards.

The European Ku band Universal LNB's have LO's of 9750 & 10600. The USA Ku band LNB's have a LO of 10750. So surely 9750-10600 is the correct setting.

EDIT...started replying during digicon's post.

[rigsby71]

Maybe have a look in the openbox section.

There are some good channel llists in there you can load onto a USB stick, & then put the stick on the box & upload a channel list.

It will get rid of all the "crap" like un named channels & shopping channels.

They will also be set out in various way & will even be sorted into favourites for you.

It saves a hell of a lot of time going through deleting the stuff you don't want.

What's more, these lists are kept pretty much upto date for any changes that happen.

Have a look for AJ's list for starters.

regards

[Nutsandbolts]

Hi. My TM5402 Universal lnb default is 9.750/10.750 and works ok so i dont know where people get the idea that it should be 10.600 . Also if you read the first post it does mention that it was set to 10.750 and was also working fine. It has nothing to do with US or Europe setting as mentioned. It may be different settings for different receivers. I will test it out later by doing blind scans using 10.600 and see what results i get.

Regards.

[Hadron]

Hi. My TM5402 Universal lnb default is 9.750/10.750 and works ok so i dont know where people get the idea that it should be 10.600 . Also if you read the first post it does mention that it was set to 10.750 and was also working fine. It has nothing to do with US or Europe setting as mentioned. It may be different settings for different receivers. I will test it out later by doing blind scans using 10.600 and see what results i get.

Regards.

The idea that it should be 10.6 comes from the spec of universal LNB's for the European market. My LNB is a Technomate TM-4. The spec sheet states L.O. frequency 9.75GHz Low Band & 10.6GHz High Band. The same goes for any universal LNB used in Europe.

All websites will tell you the same thing. Have a look here:-

Low-noise block downconverter - Wikipedia, the free encyclopedia

The reason I mentioned USA is because 10.75GHz is the L.O. frequency they use in their Ku band LNB's.

What LNB are you using Nutsandbolts? Perhaps it is non-standard?

My S9 missed a lot of channels when set to 9750-10750 but misses nothing when set to 9750-10600.

[Vault Dweller]

Ok, I have tried preforming a blind scan on every frequency setting (and deleting the TP's every time).

The most channels I pick up are on the 9750 - 10750 blind scan. I'm not that bothered about every channel however just this large chunk thats missing.

When I scan on the set frequencies, just 10450, 10700, for example, it pulls through all of the missing ones but not all of the the ones on the 9750 - 10750 that I scanned before, weird.

Next step is to try to load another channel list, but surely if It's not receiving the correct TP's on the correct frequency then some will just show up no signal.

You can tell I'm putting off going up onto the roof to tweak it but its looking more like this is what I might have to do! Hopefully this will pick this missing chunk on the one frequency scan along with the others.

Thanks for all your suggestions.

[Hadron]

When you have your settings on 9750-10750 have you checked whether some of the channels are doubling up giving you a longer channel list? It's hard to tell with ITV BBC CH4 etc. but I'm wondering if some other channels might be listed twice.

I made the mistake when setting the LNB Freq for the first time in thinking that it was a range of frequencies. It's not. It's the 2 fixed frequencies that are used as the LNB's local oscillator.

Do you know what make & model of LNB you have?

Can you give an example of a channel that it receives when set to 9750-10750 which it doesn't when set to 9750-10600?

[Nutsandbolts]

Hi. Ok problem resolved. It should be 10600 after all. When i had it on 10750 most of my channels were working but some were coming up with message NO VIDEO OR AUDIO. Because i have only had this 5402 for a few weeks (i got it secondhand for 40 pounds)the previous owner had it set to 10750 for some reason and made me think it was correct default. I have now changed it back to 10600 and working ok. To be honest i cant see what the difference is as it only affects some channels and not all. Thanks to everyone for their comments.

Regards.

[Vault Dweller]

When you have your settings on 9750-10750 have you checked whether some of the channels are doubling up giving you a longer channel list? It's hard to tell with ITV BBC CH4 etc. but I'm wondering if some other channels might be listed twice.

I made the mistake when setting the LNB Freq for the first time in thinking that it was a range of frequencies. It's not. It's the 2 fixed frequencies that are used as the LNB's local oscillator.

Do you know what make & model of LNB you have?

Can you give an example of a channel that it receives when set to 9750-10750 which it doesn't when set to 9750-10600?

Hi Hadron,

No there isn't any duplicated channels that I can see...

I have a Zinwell J4L lnb, and after searching on google this doesn't fill me with much confidence.

On 9750-10750 It scanned 581 TV channels over 77 TP's.
On 9750-10600 it scanned 567 TV channel over 71 TP's.

Both of which missed the Eurosport, music and some film channels that I receive on a single frequency scan like 11300.

I would say too that the second scan brought up more channels of, No Name and just numbers.

The scan on 11300 gave me 485 over 59 TP's but most of which weren't on the previous two scans.

[Vault Dweller]

Even though I am picking up the channels would it be worth changing the lnb or would it be the receiver?