UPC Analogue + Saorview

crowej

Hi All,

Am in an area with perfect UPC analogue and soarview reception and I would like to combine the two on my tv's

I tried inserting the Soarview into a splitter with the UPC connection where it enters the house, i continue to get soarview reception but the UPC analogue drops to being unwatchable.

is there a method i can have both signals bouncing the internal cabling in my house ?

Capt'n Midnight

you would need to put in filters to block overlapping channels

VHF is just UPC so that's easy enough
UHF has both






plans for a DIY 10 element yagi - with dimensions for individual channels, not sure if two narrow bandwidth to pickup all of the DTT
might be useful to reject some of the analog channels

http://www.mtmscientific.com/yagi.html page
http://www.mtmscientific.com/yagi.pdf plans

winston_1

Capt'n Midnight wrote: »

plans for a DIY 10 element yagi - with dimensions for individual channels, not sure if two narrow bandwidth to pickup all of the DTT
might be useful to reject some of the analog channels

http://www.mtmscientific.com/yagi.html page
http://www.mtmscientific.com/yagi.pdf plans

An aerial is not a filter, it won't reject other channels. Outside it's design bandwidth other signals will come in with poor directivity and gain.

That particular aerial is a poor design as there is no balan.

watty

You'd be amazed how well any TV aerial receives the local GSM phone mast (880MHz to 960MHz), 446MHz PMR, sub 460MHz Tetra, Band III TV and DAB (175MHz to 275MHz), Marine Radio Coast guard on 156MHz band, Airport on 110MHz to 137MHz and FM Band II Radio on 87MHz to 108MHz.

Yes gain is rubbish. But some of these can be nearby very strong signals and thus overload cheap poorly filtered mast Preamp. Only use Mast Preamps that are properly filtered, UHF TV only and only to to cancel out the loss of cable to TV or distribution system.

crowej

right getting a little to technical for me,

Can you link me to some products that might help ?

here is my basic setup,

Soarview

---

_splitter/joiner ____________ tv's
UPC

---

so i assume i need something on the soarview aerial side to filter the VHF signal which will allow the upc signal to come through un disturbed ?

watty

Don't feed UHF aerial + UPC to tvs without a VERY good UHF/VHF Diplexer/ splitter.

maxg

crowej wrote:

so i assume i need something on the soarview aerial side to filter the VHF signal which will allow the upc signal to come through un disturbed ?

Any advice depends on the highest frequency used in your cable area for analogue and the frequency for your saorview reception.
A standard vhf/uhf diplexer is not so good because a lot of them are not willing to let pass superband and hyperband. Beside that for instance in Dublin 3 analogue UPC channels are based in the lower uhf range.

icdg

crowej wrote: »

right getting a little to technical for me,

Can you link me to some products that might help ?

here is my basic setup,

Soarview

---

_splitter/joiner ____________ tv's
UPC

---

so i assume i need something on the soarview aerial side to filter the VHF signal which will allow the upc signal to come through un disturbed ?

OP, why do you even need a splitter?

Surely your Saorview is being fed by an external aerial and then linked to your TV by SCART or HDMI. Wheras your UPC is a direct connection from the UPC tap to your TV's RF-in?

Am I missing something here?

maxg

It looks like crowej own an tv with analogue/DVB-T combi tuner and mpeg4 decoder.

Antenna

Provided your DTT is above Ch 37 (which is the case in Dublin)

As mentioned in another post this type of diplexer

http://www.tvtrade.ie/triax-uhf-diplexer-tfc-3537.html

should do, as it lets through all cable channels (47-590 MHz range) on port 1
whilst your UHF aerial goes to port 2

BTW Triax own website says insertion loss is less than 1dB. the mention of 3dB on the linked to page must be an error?

Digital Satellite TV

Antenna wrote: »

Provided your DTT is above Ch 37 (which is the case in Dublin)

As mentioned in another post this type of diplexer

http://www.tvtrade.ie/triax-uhf-diplexer-tfc-3537.html

should do, as it lets through all cable channels (47-590 MHz range) on port 1
whilst your UHF aerial goes to port 2

BTW Triax own website says insertion loss is less than 1dB. the mention of 3dB on the linked to page must be an error?

Thanks for pointing this out. We double checked the info on the box and instructions and it is in fact 3dB. That must be an error on the triax site or they have a new diplexer with a lower loss. We try to ensure that all the tech specs are correct on the website but with the best will in the world, it is sometimes difficult to have every thing exactly right and we appreciate those eagle eyed among you that point out type-os so we can correct them..

crowej

Hi Guys,

Thanks for all the responses. Just to be clear each of my 3 tv's has a built in tuner capabale of soarview/DTT and obvously regular analogue service.

I am based in Sandymount in Dublin.

based on all of this will this
http://www.tvtrade.ie/triax-uhf-diplexer-tfc-3537.html

allow me to combine the UPC and Soarview signals ?

Sam Russell

It should. In Sandymount, you get Saorview on Ch 54 from 3Rock, so that is above the higher side, and UPC analogue is on the VHF and lower UHF bands. You might miss something, but I doubt it.

Let me know how you get on, as I know someone who wants to do the same.

crowej

thanks buddy, i just ordered it for delivery tomorrow so i will report back over the weekend.

Digital Satellite TV

crowej wrote: »

thanks buddy, i just ordered it for delivery tomorrow so i will report back over the weekend.

Cheers for that. Will you let us know how you got on aswell. Would be really interested to see how that pans out for you. You can send us your findings using the contact page on the tv trade website

crowej

Hi Guys,

Just wanted to report back, all working perfectly. UPC and Soarview signal combined and tuned in on all tv's with crystal clarity on both.

couldnt recomend tv trade more and again the product i am using is

http://www.tvtrade.ie/triax-uhf-diplexer-tfc-3537.html

coneill13

Three Rock has changed to CH 30 since Jul2012 which I believe is at 546MHz. Input 2 of the Triax 3537 Diplexer is 598-862 MHz so CH30 will be outside of the range of this input. It would seem that this solution no longer works. Can anyone confirm and suggest what Diplexer model should now be used ?

StreetLight

The same setup can still be used if the aerial can pick up Kippure Saorview on UHF channels 54 and 58.

coneill13

SetreetLight wrote: »

The same setup can still be used if the aerial can pick up Kippure Saorview on UHF channels 54 and 58.

I can't pick up Kippure so I'm contemplating just combining the two signals with a 4€ passive combiner / splitter without filters. I'd use a SAT/UHF/VHF combiner / splitter to split my UPC broadband from the analogue signal at the UPC house connection so that the UPC signal would be 0 to 800KHz feeding the passive splitter. Would expect to see some interferance on the UPC channels above 500MHz (e.g. Channel 4) but otherwise it might work ?

fat-tony

This thread is two years and nine months old...

coneill13

coneill13 wrote: »

I can't pick up Kippure so I'm contemplating just combining the two signals with a 4€ passive combiner / splitter without filters. I'd use a SAT/UHF/VHF combiner / splitter to split my UPC broadband from the analogue signal at the UPC house connection so that the UPC signal would be 0 to 800KHz feeding the passive combiner. Would expect to see some interferance on the UPC channels above 500MHz (e.g. Channel 4) but otherwise it might work ?

This setup might be improved with a High pass or Band pass filter on the Saorview signal passing 546MHz e.g. http://www.ebay.co.uk/itm/Triax-470-606-MHz-Group-A-Band-Pass-Filter-Channels-21-37-370653-/400612409110?pt=UK_Sound_Vision_Other&hash=item5d465c3f16