Advice Needed Is a 4 degree separation on a 60cm dish possible?

[sonnetpete]

@sonnetpete:
With "normal 40mm LNB" do you mean a neck of 40mm, or a head of 40mm?
If the head is more than 40mm, e.g. a normal 60mm, then your megasat LNB alongside it could be too much out of its focus.

Ah ok, it's a 40mm neck..however it's only the weaker TP's on 23.5E I have any problem with. I could swap the 28E LNB to a narrow one as well which may help but I think SWMBO might object to losing 'her' programmes when it rains....

 

[Archive4]

As promised, I set up the re-cycled Triax and found the duo twin in the back of the van. Problem was, I remembered why it was in the van, I had to replace it on an 80 dish as it wasn´t working correctly. Tests proved it only works on primary lnb, so figure the internal switch has failed. Need to hunt in the van again!

 

[daro2096]

I used two Inverto Multiconnect LNBs for 19.2E and 23.5E on a 60cm and it is doable but they aren't the best LNBs, especially when wet. 9E might struggle a bit at times on some transponders. I built a rain cover from a coke bottle to help keep the LNB heads dry which helped quite a bit.

Did you glue the bottle on or is it just stuck on?

 

[timo_w2s]

Did you glue the bottle on or is it just stuck on?

I carefully cut a couple of holes to fit the LNBs exactly so it was simply held together by the force of the plastic around the base of the LNB caps. Worked well for a couple of years until I took it down two weeks ago for a house move. The aim of the cover was to keep the LNB caps free of water droplets as this is what seems to degrade the signal badly. Other's have suggested spraying the LNBs with some water repellent substances, eg WD40.

 

[daro2096]

I carefully cut a couple of holes to fit the LNBs exactly so it was simply held together by the force of the plastic around the base of the LNB caps. Worked well for a couple of years until I took it down two weeks ago for a house move. The aim of the cover was to keep the LNB caps free of water droplets as this is what seems to degrade the signal badly. Other's have suggested spraying the LNBs with some water repellent substances, eg WD40.

And it worked well through the plastic? I noticed you didn't cut the bottle length ways.

 

[timo_w2s]

And it worked well through the plastic? I noticed you didn't cut the bottle length ways.

Yes, that thin plastic is fairly invisible to radio waves. I wanted to keep the structure solid and avoid rain coming in at angles with the wind.

Reception wasn't great though using those LNBs, and I only got away with it as the signals I wanted from the 19E/23E Astra satellites are strong. I'd be a little concerned with trying this for 9E. If I do decide to use those 60cm dishes again in my new house it'll just be for single satellite use. I have a 90cm dish I plan to use for a multi LNB setup using decent normal 40mm sized LNBs.

 

[Scubadan77]

Hi all,

I am having the same problem, I am trying to align 19E and 23,5E using
a 60cm dish and a monoblock with 4,3degree. I must have it aligned to 23,5E
as with a single LNB I am picking up the channels but when i put the monoblock
on , which ever side I clamp I can't seem to get both together, it's one or the other.
which side are you meant to clamp , i have photo and will try later when i get home to
upload to show you.

thanks for any help

 

[Archive4]

Hi all,

I am having the same problem, I am trying to align 19E and 23,5E using
a 60cm dish and a monoblock with 4,3degree. I must have it aligned to 23,5E
as with a single LNB I am picking up the channels but when i put the monoblock
on , which ever side I clamp I can't seem to get both together, it's one or the other.
which side are you meant to clamp , i have photo and will try later when i get home to
upload to show you.

thanks for any help

What make of 4.3 monoblock are you using? If you align the dish using a single lnb, then replace the monoblock lnb, you need to put the 23.5 part of the lnb at the centre. ( normally the left side of the monoblock ) and dwell angle should put 19 lower. You must set the diseqc settings for a 19, b 23.5 . If the monoblock is designed for a 80 cm dish you won´t have too much luck unless you are in a very strong signal area. And even then I doubt it will work correctly. Suspect you monoblock is designed for an 8o cm dish

 

[Scubadan77]

I am doing this for my dutch neighour who wants canal digitaal what is on both satellites.
I got the monoblock from GI and it is quite big in size. on the back it say 23,5E on the left and 19E
on the right.I was wondering if needed 80cm dish but their friend has a subscription with canal
and his dish is only a 60cm . the monoblock has a built in diseqc so do you have to put diseqc settings
in the meter as well as the box??

I tried my neighbours box on his friends dish that is connected for canal digitaal and was wasn't
getting a signal on one of the main freq, could this be because i haven't put diseqc settings in the box???

 

[Trust]

If you want to receive both satellites , you have to set diseqc A (or 1) for 19.2 and diseqc B (or 2) for 23.5º E

 

[Archive4]

I am doing this for my dutch neighour who wants canal digitaal what is on both satellites.
I got the monoblock from GI and it is quite big in size. on the back it say 23,5E on the left and 19E
on the right.I was wondering if needed 80cm dish but their friend has a subscription with canal
and his dish is only a 60cm . the monoblock has a built in diseqc so do you have to put diseqc settings
in the meter as well as the box??

I tried my neighbours box on his friends dish that is connected for canal digitaal and was wasn't
getting a signal on one of the main freq, could this be because i haven't put diseqc settings in the box???

The GI 4.3 monoblocks are designed for use on an 80 cm dish. The neighbour probably has a different make of lnb which is designed for a 60 dish. As stated above, standard Canal D boxes are pre set to look for 19.2 E on diseqc 1 and 23.5 E on diseqc 2, most usually also have Astra 2 and Hotbird loaded.
How good is your Dutch? Go into settings and change the " Taal " to " Engels " which will change the box operating system to English, you may find that helps to sort the problem. Always best here to set the 23.5 E part of the monoblock at the centre and drop the 19.2 side lower on the right, as you face the dish.
If stuck, re-post, I´m only 20 mins up the road!

Edit, if space is no problem, get a LH 100 or LH 110, bit of overkill, but will solve the problem.

 

[PaulR]

The neighbour probably has a different make of lnb which is designed for a 60 dish.

Possibly but as I said earlier...

...but in practice the greater aperture angle of a 60cm dish compared to an 80cm dish means that there will be little loss.

 

[PaulR]

The neighbour probably has a different make of lnb which is designed for a 60 dish.

Possibly but as I said earlier...

...but in practice the greater aperture angle of a 60cm dish compared to an 80cm dish means that there will be little loss.

 

[Archive4]

Possibly but as I said earlier...

In theory Paul, you should be correct, in practice, you´re well off. Monoblocks designed for a 60 cm dish work on any, but monoblocks designed for an 80 will not work on a 60 cm dish, trust me I´ve tried a few. ( I´ll send you a couple to check, if you like )

 

[Trust]

In theory Paul, you should be correct, in practice, you´re well off. Monoblocks designed for a 60 cm dish work on any, but monoblocks designed for an 80 will not work on a 60 cm dish, trust me I´ve tried a few. ( I´ll send you a couple to check, if you like )

Can't be !!
Besides , are you aware that the situation in Spain is different as it is in England ?
The angle between 19.2 and 23.5 is wider more south .

 

[Archive4]

Can't be !!
Besides , are you aware that the situation in Spain is different as it is in England ?
The angle between 19.2 and 23.5 is wider more south .

I can only post what I have experienced here in my area. If I put a Konig monoblock on a 60 cm dish you can see both sats at low levels but not good enough for most receivers. A nudge either way will get full signal on one or other sat, but looses signal from the other. Using a Duo monoblock designed for 60 cm dish works ok.
This may be due to the wider angle, which I was not aware of, but am now, thanks!
I have two 4.3 monoblocks in the car, one Konig and the other unknown. When I get time I´ll check them both on a 60 and 80 cm dish, just to ensure I´m not going mad.

Scubadan, you must set the diseqc on the meter when trying to align the dish and the receiver for correct reception.

 

[PaulR]

Can't be !!
Besides , are you aware that the situation in Spain is different as it is in England ?
The angle between 19.2 and 23.5 is wider more south .

That may be why they work here in the UK but not in Spain.

We're both right!

 

[Scubadan77]

thanks guy for your advice, i did have a 80cm but have lent out for a while.
I can get my hands on 1m so will try that also try setting up the diseqc.

 

[Archive4]

thanks guy for your advice, i did have a 80cm but have lent out for a while.
I can get my hands on 1m so will try that also try setting up the diseqc.

Are you using GI dishes as well? The GI 60 cm is only a 55 cm approx, the 80 is only a 75 cm approx. GI ( and most other retailers in Spain ) sell on the height not the width. The Manufacturers design and sell on width ( true size of offset dish when viewed from satellite ) so a 4.3 degree monoblock Duo lnb, designed for a 60 cm dish, will work on a Triax 60 cm ( for example ) but may not work correctly on a GI 60 cm dish.
I know, very confusing, but it is what it is in Spain!

 

[Scubadan77]

no the dish is a metronic ,it was there when they moved in. I'm trying to find a phone lead to upload photo's.