LNB - Mono/Dual feed & motorizzato

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wlf
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LNB - Mono/Dual feed & motorizzato

Post by wlf »

Salve,
stavo valutando di passare da un mono feed montato da Sky per il MySky HD, con LNB con due calate unicable SCR, ad un dual feed.
Oltre a Hotbird 13E pensavo di puntare pure Eutelsat 9E perché a quanto ho visto ci sono un sacco di canali nazionali di TV locali e non, la maggioranza FTA. Astra 19E sarebbe l'altra alternativa mi pare invece più "Europeo".

Trovare un LNB da 4° con due uscite è già abbastanza complesso, con un paio di uscite SCR pare impossibile. :(

Che voi sappiate va bene qualsiasi LNB per MySky HD oppure è indispensabile proprio Unicable SCR?

Se trovassi un dual-feed con una sola uscita potrei "sdoppiarla" con uno splitter oppure ci sono controindicazioni?

Grazie.

STRETCH
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Re: LNB - Mono/Dual feed & motorizzato

Post by STRETCH »

Can you confirm that you can set up a dish, and see the satellites of 9e/13e /19e.
If so you could use a 80cm dish with a 4 way diseq switch with normal single lnb's, or even better use a motor with the 80cm dish.
Have a look at (dishpointer), put the (X) to were you would put your dish, then you will then be able to see if you can receive those satellites.

Den

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Re: LNB - Mono/Dual feed & motorizzato

Post by STRETCH »

These photo's may help.

Den
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wlf
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Re: LNB - Mono/Dual feed & motorizzato

Post by wlf »

STRETCH wrote:
Mon Oct 24, 2022 10:39 am
Can you confirm that you can set up a dish, and see the satellites of 9e/13e /19e.
Si, posso vedere tutti e tre i satelliti ma sul 19.2E c'è ben poco in italiano, un solo canale, quindi lo trovo "inutile".
If so you could use a 80cm dish


Ho una parabola da 85cm, una Fracarro Penta.
with a 4 way diseq switch with normal single lnb's,
Adesso ho un singolo LNB con due uscite per due calate. Meglio due singoli LNB con adattatore oppure un LNB dual feed monoblocco?
or even better use a motor with the 80cm dish.
E' più costoso, laborioso e comunque dovrebbero essere più che sufficienti 2 satelliti, il 13E principale e il 9E, non ho grosse pretese.
STRETCH wrote:
Mon Oct 24, 2022 11:10 am
Image
Io metterei come principale il 13E e offset il 9E. Esiste uno switch con 2 uscite per due calate? Casomai con 2 IN e 2 OUT?
Grazie!

STRETCH
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Re: LNB - Mono/Dual feed & motorizzato

Post by STRETCH »

So you are saying, you have two receivers, and wish to receive channels from two satellites 9e/13e.
Best way to do this, would be to get two dual output lnb's, two, two way diseq switches, 80cm dish and bracket, then you will have a down lead from each switch to each of the receivers.


Den

wlf
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Re: LNB - Mono/Dual feed & motorizzato

Post by wlf »

STRETCH wrote:
Mon Oct 24, 2022 2:54 pm
So you are saying, you have two receivers, and wish to receive channels from two satellites 9e/13e.
Corretto, ho due ricevitori, un MySky HD con dual tuner, che sfrutta l'Unicable SCR per registrare e contemporaneamente vedere un altro canale, ed un GTMedia V9 Prime con singolo tuner.
Vorrei utilizzare principalmente il 13E ed eventualmente anche il 9E.
Best way to do this, would be to get two dual output lnb's, two, two way diseq switches, 80cm dish and bracket, then you will have a down lead from each switch to each of the receivers.
Grazie, ottima idea; così ogni calata rimane indipendente dalle altre.
L'unico dubbio è se prendendo un nuovo LNB con output diseq se è compatibile con l'attuale LNB Unicable SCR che ho già installato. Devono essere entrambe diseq per essere collegati allo stesso switch? L'Unicable SCR è compatibile diseq?

Oggi ho due calate; stavo però pensando prossimamente di portare la presa satellitare in una terza stanza. Quindi casomai acquisto un LNB a 4 uscite per poter aggiungere successivamente un terzo switch per la terza calata. Avrei inoltre la possibilità di aggiungerne una quarta in futuro.

STRETCH
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Re: LNB - Mono/Dual feed & motorizzato

Post by STRETCH »

If you are thinking of going for a third receiver, it would be best to get Three, 2 Way Diseq switches.
Most diseq switches come with covers, with the switch pushed up inside, held in place with (cable tie)(tie-wrap) behind the dish, then the cable from the switch to the receiver.
With the (unicable scr) lnb, how many outputs do you have, if your (sky) receiver is anything like the ones that are used in the UK, they DO NOT like diseq switches, depending on the outputs, you could use the second lnb input.

Den

wlf
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Re: LNB - Mono/Dual feed & motorizzato

Post by wlf »

Like this one?

Image

STRETCH
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Re: LNB - Mono/Dual feed & motorizzato

Post by STRETCH »

The diseq switches look like this, plus other photo's to help.

Den
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wlf
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Re: LNB - Mono/Dual feed & motorizzato

Post by wlf »

Perché un 2 LNB INPUT e 4 RECEIVER OUTPUT non va bene?
Questo sottostante ha pure l'ingresso per l'antenna terrestre, quindi sullo stesso cavo sarebbe possibile poi ricavare sia il satellite che il DVB-T!
Image
STRETCH wrote:
Mon Oct 24, 2022 5:30 pm
The diseq switches look like this, plus other photo's to help.
Image
Per la terza calata al terzo receiver dovrei quindi aggiungere un terzo diseq switch a 2 vie?

Grazie, saluti.

STRETCH
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Re: LNB - Mono/Dual feed & motorizzato

Post by STRETCH »

I am not sure how the (MS34EZ) works, maybe looks for (H/V).
Let's hope Owen see's this thread, he will be better, to explain how this switch works.
For your third (drop) as you say, you will need another 2 way diseq switch.

Den

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CAJE
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Re: LNB - Mono/Dual feed & motorizzato

Post by CAJE »

There are three inputs, one Satellite at 13V Vertical, another DVB-T and the third 18V Horizontal and mixes it for the 4 outputs

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Feralkiwi
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Re: LNB - Mono/Dual feed & motorizzato

Post by Feralkiwi »

Hi

The Unicable LNB should be able to supply 8 set top boxes, each with a different IF frequency allocated.
Each box then only needs a connection through a standard splitter to connect.
The issue will be if you then add extra standard LNB / dishes that need a DiSEqC switch.
I have not used a Unicable LNB, but I would expect it to work through a DiSEqC switch port.

Owen
Dishes; 3x3m, 2.4m and 4.1m, 10+ ku, 2 movers, USARLS. V8 Combo, Pro, V8 Golden, Nova V8Pro2, GTC, Super.V7HDs, Combo and V7s V7Plus Finder, Finder-Meter V8X / UHD V7Pro GT/XCombo. Sats 100.5E to 177W. I'm a Sat hobbyist who helps out.

STRETCH
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Re: LNB - Mono/Dual feed & motorizzato

Post by STRETCH »

There could be another way around to do this, but it will mean another cable run to your (Sky) receiver.
With the (Sky) receiver been a Twin turner, one cable from the 13e, then another cable from 9e.
Then on the V9 use the (2way diseq), then when you want to add another receiver, you would then use the second (diseq) switch.
Using your 80cm dish, purchase a bracket, (or make one), 2 quad lnb's, 2 2way diseq switches, good satellite cable, connector's, hope for a good day, with lot of patience, (that is if the wife will let you), to carry out the update.

Are both lnb inputs in use on your (Sky) receiver, depending on answer, there could yet be another way.

Den

wlf
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Re: LNB - Mono/Dual feed & motorizzato

Post by wlf »

Feralkiwi wrote:
Mon Oct 24, 2022 8:02 pm
The Unicable LNB should be able to supply 8 set top boxes
Da quanto ho capito io Unicable SCR dovrebbe supportare solamente 4 set top boxes.
STRETCH wrote:
Mon Oct 24, 2022 8:30 pm
Are both lnb inputs in use on your (Sky) receiver, depending on answer, there could yet be another way.
No, il decoder MySky HD utilizza un unico cavo/calata.

Attualmente ho solamente 1 parabola (disco) e un LNB con doppio output. Da quanto ho capito mi serve un altro LNB con doppio output e poi collegare il tutto con il seguente schema:

Code: Select all

                             ____________         ______________
LNB 13E (Unicable SCR)---->-|   SW02Q    |       |              |------> Calata MySky HD
                            | Switch 2x1 |----->-|3-WAY-SPLITTER|------> Calata GTMedia V9 Prime
LNB  9E (DiSEqC)---------->-| (Foto A)   |       |  (foto B)    |------> Calata Next GTMedia V8UHD?
                             ------------         --------------
Funzionerebbe così o ci sarebbero problemi? :?:

Grazie! ;)

Foto A:
Image


Foto B:
Image

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Feralkiwi
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Re: LNB - Mono/Dual feed & motorizzato

Post by Feralkiwi »

Your switch "SW02" is a 22kHz switch.
The commands to the Unicable and DiSEqC LNB's use the 22kHz tone to send the commands in a digital format.
This means that the 22kHz switch will change port with every bit of the digital command.
Also universal LNB's use 22kHz to change between the lower and upper bands, 9750 lower and 10600 22kHz "on" for upper band, so a 22kHz switch can not be used before a universal LNB as well.

If the 9e LNB is a multi satellite LNB ( two or more heads) and uses DiSEqC to change between the satellites, that will be DiSEqC 1.0
This will mean you can not use a DiSEqC 1.0 switch in place of the 22kHz tone switch you showed in your diagram.
You would need to use a DiSEqC 1.1 switch, typically a 8 port switch.
If the 9e LNB is just a standard LNB then you can use a DiSEqC 1.0 switch in place of the 22kHz switch.

Note also from your diagram that if one box is using H polarity the other boxes can not use V polarity on the standard 9e LNB.
Also if the 9e LNB is a universal for lower and upper band, any box that is using the upper band will have the 22kHz tone "ON" and that will block all other boxes from using and 22kHz tone commands to the switch or the unicable LNB.
Also if one box changes the replacement of the 22kHz switch (SW02), a DiSEqC switch and another box changes it back, there will be a continued fight and no box will see any channel.

As the Unicable LNB will supply 4 boxes, share that through the splitter you show and then have a DiSEqC switch at each box to a splitter on the 9e LNB.
That will allow no clash between boxes for the unicable LNB and some managed sharing of the 9e so a user on high band or H polarity does not prevent other users form V or lower band.

The better solution then is to add a "MS34EZ" as you showed earlier in this post, but that will still not solve the upper / lower band issue, just the V / H and you would need a two output LNB.

There are 4 output LNB's with a port for 13v 0Hz, 13v 22kHz, 18v 0Hz, 18v 22kHz and switches the same, both powered and unpowered.

Owen
Dishes; 3x3m, 2.4m and 4.1m, 10+ ku, 2 movers, USARLS. V8 Combo, Pro, V8 Golden, Nova V8Pro2, GTC, Super.V7HDs, Combo and V7s V7Plus Finder, Finder-Meter V8X / UHD V7Pro GT/XCombo. Sats 100.5E to 177W. I'm a Sat hobbyist who helps out.

wlf
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Re: LNB - Mono/Dual feed & motorizzato

Post by wlf »

E così dite che funziona oppure ho nuovamente sbagliato? :?:

Code: Select all

LNB 13E (Unicable SCR)|---->-|Splitter GSP-02A|--->-|LNB1                 |
   2 Way output       |        (Foto C)       |--->-|LNB3                 |
                      |                             |                     |
                      |---->-|Splitter GSP-02A|--->-|LNB5                 |     ________________
                               (Foto C)       |--->-|LNB4 Switch GST-8101 |     |              |------> Calata MySky HD
                                                    |       8X1 (Foto A)  |--->-|3-WAY-SPLITTER|------> Calata GTMedia V9 Prime
LNB  9E (DiSEqC)      |--------------------------->-|LNB2                 |     |  (foto B)    |------> Calata Next GTMedia V8UHD?
   4 Way output       |--------------------------->-|LNB4                 |     |______________|
                      |--------------------------->-|LNB6                 |
                      |--------------------------->-|LNB8                 |
                                                    |_____________________|
Foto A:
Image

Foto B:
Image

Foto C:
Image

STRETCH
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Re: LNB - Mono/Dual feed & motorizzato

Post by STRETCH »

Can you show a few photo's, of your (sky) lnb's menu's, i am hoping that there is a Universal setting of (9750/10600).
Plus with you saying you only have one lead to your (sky) receiver, the best way to get full use of the system, would be to remove the (Unicable SCR) lnb, and fit two quad (Universal) lnb's, one lead from the 13e direct to the first lnb input, one lead from the 9e direct to the second lnb input.
Then using the diseq switches, placed behind the dish, then the leads from them down to your other receivers where you would use the (1.0diseq) setting.

Den

wlf
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Re: LNB - Mono/Dual feed & motorizzato

Post by wlf »

STRETCH wrote:
Tue Oct 25, 2022 8:45 am
Can you show a few photo's, of your (sky) lnb's menu's, i am hoping that there is a Universal setting of (9750/10600).
Non sono a casa per mandarti i settaggi di MySky HD; ti mando i settaggi del V9 Prime.

Image
Plus with you saying you only have one lead to your (sky) receiver
Corretto, attualmente ho unicamente un solo LNB puntato sul 13E con parabola da 85cm con uscite e due calate, una per il ricevitore MySky HD e l'altra per il ricevitore GTMedia.
the best way to get full use of the system, would be to remove the (Unicable SCR) lnb, and fit two quad (Universal) lnb's, one lead from the 13e direct to the first lnb input, one lead from the 9e direct to the second lnb input.
Il dubbio principale era appunto se aggiungere un secondo LNB per il 9E, se optare per un LNB monoblocco dual feed, oppure addirittura passare direttamente ad un motorizzato. Se è necessario sostituire il 13E basta solamente che questo sia compatibile con MySky HD.
Vorrei aggiungere una terza calata, eventualmente in futuro una quarta; Calata 1 soggiorno (MySky HD), calata 2 studio (GTMedia V9 prime), calata 3 cucina (GTMedia ???).
Da quello che ho capito se mettessi un motorizzato sarei vincolato alle scelte del ricevitore master che decide su quale satellite puntare, gli slave non sarebbero indipendenti.
Considerando che il motorizzato è più costoso e vincola i ricevitori slave, io utilizzerei solamente il 13E ed il 9E, quindi opterei per un dual feed fisso.
Then using the diseq switches, placed behind the dish, then the leads from them down to your other receivers where you would use the (1.0diseq) setting.
Gli switch posso anche metterli nel sottotetto, al riparo da pioggia ed umidità. Ovviamente se metto due LNB con 4 uscite dovrò portare nel sottotetto ben 8 cavi.

Immagino che tu indichi uno schema di questo tipo:

Code: Select all

                         _________________
LNB 13E (DiSEqC)|------>-|1   Switch A   |
   4 Way output |------>-|3   LNB 1-2    |------> Calata MySky HD
                |------>-|5              |
                |------>-|7   Switch B   |------> Calata GTMedia V9 Prime
                         |    LNB 3-4    |
                         |               |
LNB  9E (DiSEqC)|------>-|2   Switch C   |------> Calata Next GTMedia V8UHD?
   4 Way output |------>-|4   LNB 5-6    |
                |------>-|6              |
                |------>-|8   Switch D   |------> Calata libera
                         |    LNB 7-8    |
                         |_______________|
Utilizzando un LNB Monoblocco dual feed immagino che sarebbe necessario un 4 uscite; praticamente integra i 4 switch dello schema sopra nel monoblocco. Esiste un monoblocco da 4° con 4 uscite?

Non c'è quindi modo di fare un unica calata dall'antenna e poi utilizzare uno splitter a valle quindi?
Usando uno splitter è come un duplicatore ma non permette ad ogni singolo ricevitore splittato di decidere quale LNB utilizzare e con quale polarizzazione, corretto?

Switch 2x1 A/B/C/D
Image

Grazie, saluti.

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Re: LNB - Mono/Dual feed & motorizzato

Post by STRETCH »

Best to bin the (motor), going for diseq would be best, depends on the lnb settings on your (sky) box, plus it would be cheaper.

Den

wlf
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Re: LNB - Mono/Dual feed & motorizzato

Post by wlf »

STRETCH wrote:
Tue Oct 25, 2022 10:42 am
Best to bin the (motor)
Infatti l'avevo già scartato come opzione! :D
going for diseq would be best, depends on the lnb settings on your (sky) box, plus it would be cheaper.
Economico e con la massima flessibilità. Si prendono due piccioni con una fava!

Quindi mi confermi che è indispensabile fare 4 calate dalla parabola e non è possibile scendere con un unica calata e poi usare uno splitter a valle?

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Re: LNB - Mono/Dual feed & motorizzato

Post by STRETCH »

From what i have read the (Unicable SCR) only works with receivers that support (Unicable), one of which is the GTMedia V7 Pro. (Unicable 2.0).
I DO NOT know the full workings of that system, from my other posts, i know that using Quad Universal lnb's and diseq switches work, because i have a few dishes, going to Two receivers using diseq switches, and i know that it works, (39e/28e/9e/30w).

Den
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wlf
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Re: LNB - Mono/Dual feed & motorizzato

Post by wlf »

STRETCH wrote:
Tue Oct 25, 2022 1:20 pm
From what i have read the (Unicable SCR) only works with receivers that support (Unicable), one of which is the GTMedia V7 Pro. (Unicable 2.0).
Sto utilizzando l'unico LNB presente sia con MySky HD impostato come SCR sia sul V9 Prime impostato come l'immagine che ti ho inviato e funziona perfettamente con entrambe. Quindi anche il V9 Prime supporta l'Unicable SCR. Col nuovo fw Mars addirittura l'impostazione è più semplice, non con le frequenze come sul vecchio fw della foto, ma con Unicable SCR con le 4 impostazioni (A/B/C/D).


Questo sottostante dovrebbe andare bene senza alcun switch e notevolmente più semplice da montare; confermi?

Image


Altrimenti un paio di questi sottostanti con 4 switch 2x1.

Image

Quale adattatore per distanziare i due LNB mi consigli? Come si fa a misurare che siano distanti 4°?

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Re: LNB - Mono/Dual feed & motorizzato

Post by STRETCH »

By the look of it, you have found the correct (Monoblock), 4 outputs, on the GTMedia receiver, you may have to amend the diseq setting 1.0 against each satellite, 13e @ 1 / 9e @ 2. Not too sure about the (Sky) receiver, you will have to check the LNB settings.
When fitting, it will be bit of trial/error, you may gain some signal from 13e and loss some 9e, then move the mono block a little up/down you then gain signal at 9e, then loss some signal from 13e.
For me, i can adjust my dishes with ease, been near the ground, using a portable TV, step ladder, i can make adjustments, and see this on the screen, then tighten the nuts/clamps etc.
Keep us updated.

Den

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Re: LNB - Mono/Dual feed & motorizzato

Post by Feralkiwi »

Check the specification for that 4 degree mono block for the dish size?
That they work for satellites in the sky at 4 degrees would also depend on the dish size to match that 4 degree spacing.
If you put that mono block on a 600mm dish it would not "see" the same angle in the sky as if put on a 900mm dish.

There should be a specification saying what dish size this mono block is designed for.

Code: Select all

LNB 13E (Unicable SCR)|---->-|Splitter GSP-02A|--->-|LNB1                 |
   2 Way output       |        (Foto C)       |--->-|LNB3                 |
                      |                             |                     |
                      |---->-|Splitter GSP-02A|--->-|LNB5                 |     ________________
                               (Foto C)       |--->-|LNB4 Switch GST-8101 |     |              |------> Calata MySky HD
                                                    |       8X1 (Foto A)  |--->-|3-WAY-SPLITTER|------> Calata GTMedia V9 Prime
LNB  9E (DiSEqC)      |--------------------------->-|LNB2                 |     |  (foto B)    |------> Calata Next GTMedia V8UHD?
   4 Way output       |--------------------------->-|LNB4                 |     |______________|
                      |--------------------------->-|LNB6                 |
                      |--------------------------->-|LNB8                 |
                                                    |_____________________|
This design with the splitter before the 8 way switch will mean only one box can control the switch.

Each box needs its own switch and then splitters to the ports on those switches.

Owen

Maybe a splitter like this one.
Image
Dishes; 3x3m, 2.4m and 4.1m, 10+ ku, 2 movers, USARLS. V8 Combo, Pro, V8 Golden, Nova V8Pro2, GTC, Super.V7HDs, Combo and V7s V7Plus Finder, Finder-Meter V8X / UHD V7Pro GT/XCombo. Sats 100.5E to 177W. I'm a Sat hobbyist who helps out.

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