porkop

Here's a thought???? When using a multiswitch with a Terrestial FTA input, you end up with Satelite IF H & V & Terrestial FTA multiplexed on the outputs which go off to your STB.

I assume you need to split off the signal again, using a splitter with a power pass leg so as the control voltage from the sat stb can still go up the coax to the multiswitch while protecting the TV from a possible unwanted voltage at its antenna terminal???

What about sat stb's that have an LNB out function (ie dm500s) to dasiy chain stb's together that dont require multi polarity control ove the dish, is the bandpass of this pass through wide enough to carry the terrestial FTA signal thereby removing the need or an intermediate splitter/powerpass??

thanks for your input

porkop

tristen

The answer to the first question is yes, you do need to block the DC component before passing the signal to a terrestrial television receiver.
In reference to your second question, the terrestrial tv signals are attenuated at the LNB/IF Out terminal of a satellite receiver. In other words only the satellite IF signal is available, and not the terrestrial tv signal, which is ouside the passband of the satellite receiver.

porkop

Thanks Tristen, I sort of figured that would be the answer, but as I am now getting the components togethen for a multiple STB install at home I wanted to make sure before buying. Pity that the LNB out cuts off the lower frequencies

biggeorge

You need to use a diplexer to re-split the signal at the tv end. A "splitter" won't do it.

I have a heap of them here if you want to buy some. Got freestanding and the type that snap into a double wall plate in those square shaped things, HPM/Clipsal.

PM me with your requirements.

jimbo123

Didn't know these existed,.. do you have a pic ? Do they snap straight into a Clipsal plate ?

fandtm666

or just go for one of these babys



a user friendly Multiswitch that allows you to view FTA and Satellite signals on any outlet in your TV system, that has 6dB sloped gain on satellite and is Pay TV approved. Now young Mr Johansson has developed the best Multiswitch that has solved the problem.

• View horizontal or vertical polarity Satellite signals from any outlet in your TV system
• Integrates digital and analogue signals with Satellite Pay TV System
• Pay TV Approved
• High output
• 6dB sloped gain on Satellite
• Low insertion loss-Ter.
• Low MER through-put
• High Isolation on all ports
• Optimised for ‘F’ connectors

aDigitaLife . Matchmaster Multiswitch 3 x 4 FOXTEL APPROVED. Simply connect a Twin LNBF and send your satellite signal to 4 rooms.

and your diplexer

This new FTA / SAT diplexer separates the FTA and Satellite signals and is perfect for various topologies.

• One cable solutions • Multiswitch environment

The new ‘F’ diplexer clips directly into the above mentioned outlet plates & eliminates the need for unsightly splitters or additional diplexers that also cause signal loss.

Suggested applications:

• Domestic/High rise apartment blocks & housing estates
• Where ever the need to filter out FTA and satellite signals on an outlet.

Making it very easy to install a satellite set top box as the installer feeds both satellite and antenna signals into the decoder.

oceanboy

Yep, thats how a Muliswitch works alright....

I think Porkop was trying to do something else tho...... At least that is how his first post reads. I still don't fully understand what it is he is trying to achieve tho.

P.S. In some cases, you can get lines across a FTA analog signal using a Multiswitch, no problems with digital FTA tho.

biggeorge

That is the beast I have. Got a heap of them.



The freestanding ones look just like an ordinary 2 way splitter and can be tucked inside the wall, under the floor, etc.. and are water resistant / proof ?!?

That type of multiswitch pictured above is the right one for the job.
A 3x4 multiswitch or a 3x8. I also have both types of those if required. 4 way is $25 and the 8 way are $40. They are brand new but unlike the one pictured, the ones I use are waterproof / resistant.

As for the interference, there are a few ways that it can happen.

Firstly, the FTA antenna side on the diplexer and the multiswitch cannot pass power (obviously because the satellite side does it's own 13v/18v thing), so if you HAVE TO use a masthead amplifier on the antenna the power injector must be installed on the antenna side of the multiswitch.
Secondly, ALL cable must be high quality stuff. RG6 Quad.
And thirdly, cable runs must be kept as short as possible. I've heard that diplexing does not work very well when there is more than 3 metres between the diplexer and the multiswitch.

Generally, if it has to be done then the conditions must be right, otherwise 9 times out of 10 your better off finding a way to jam 3 cables up the wall and be done with it.

Hence why I have a lot of them sitting around brand new. It's cheaper to bung in another cable where its possible.

fandtm666

biggeorge thats cheap for a 3x 8.

but as you mentioned you do need very good cable also short distances.
i had one and in the end swapped it out for a televes 2x8 and just ran new single RG6 quad cables to each point for sat and fta

oceanboy

Mmmmm funny you say that about the cable lengths.... Last job a saw one was 100 wall outlets with cable runs 80m to 100m being average.

porkop

opps....should have read on....

porkop

geez, you got it in for me. that was exactly what I was trying to acheive.

My question above was, did the internal "splitter" of a sat STB pass the Terrestial freq, ie 40 - 860 MHz It has been answered so you can now give ma a break!

Biggeorge, I will pm you

oceanboy

What are you talking about, you answered you own question in the second sentence of your first post.

Then you went on to ask for something completely different?

*fergs*

biggeorge..

what are the details of the multiswitches you have ??

brand / linkie etc..

Also want some prices for the diplexers too.

where bouts are you ?? ( assume east coast )

thanks

porkop

statement was "I assume........one side with DC power pass off to the STB 2nd side with DC isolation off to the TV"

Question was.....does the tuner can in the dreambox pass the 40 - 860 MHz of Terrestial TV.

Simple enough.

Others got it, you must just be aggorant, blind or just a FN stirrer

do me a favor. just stop FN answering my posts. I am apparently better off without your input.

Admin/Mod...please close this post its just rediculous. waterwanker is not here to help. He its just a barrier. I like is other personality here better!!!

irdeto2engineer

I just use 8 in 12 outs with terrestrial input's... Since this pic was taken have added Chinasat6b H & V and all receiver ports are used.

cwispy

Actually you can just "SPLIT" the signal off the output to as the tuners will only accept the frequency that they want. However to balance the output of the switch correctly and to prevent interference and other anomalies you should use diplexers.

__________________
Business Web, Email, SQL hosting and Online Backup services available. http://www.2000cn.com.au
Wii, Xbox, Xbox 360, PS2, PS3 mods and repairs http://www.ausmodchips.com or PM me for further details

oceanboy

Awwwww, now thats not very nice... after all i've done to help you and everything. Awwwwww looks like somebody needs a hug.
As for Admins closing your posts, seems you already have experience on that Re:How the hell is he doing this?

porkop

are they for sale biggeorge???

JK200SX

Here you go, cheap off ebay...

Satellite Dish / TV Antenna - Two Diplexer/Splitters - - eBay Dishes, Satellite, Cable TV, Set Top Boxes, Satellite, Electronics. (end time 31-Aug-08 23:12:16 AEST)