C66 (834.0MHz) after switchover
The map below shows all the transmitters in the UK using C66 once digtial switchover is complete. Please click the icon to see the coverage area, and double click for more information.
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darrenSunday 15 April 2007 7:58PM
Liverpool hi iam getting no signal from any channels that use frequency c66 on both my set top box and the built in freeveiw on my new sony tv? can you give reason or offer any advice.darren: If you are missing multiplex 2, it might be down the tranmssion mode, rather than the frequency. But C66 is a common setting for VCRs, games console and the like to use, so turn off anything that has an RF output to verify these are not blocking your signals first. BobMonday 7 May 2007 1:09AM
Lytham St. Annes Hi, I have the same problem as Darren. I'm post code FY8 1GU.
I have a Freeview STB in the lounge which is fed via a tri-plexed signal through a Loft-Box. It can pick up about 80 channels in total, including ITV, IYV2, etc. The quality of the signal on these is about 75%. The quality of signal on BBC One etc is 100%.
I then use my VCR (Ch 32 I think) to pipe the Freeview picture around the house via another Loft Box. I also pipe Sky via RF (Channel 25) as well.
I have installed a PC card to pick up Freeview. I can get 100% quality on the BBC One channel(s) but it cannot find any signal on the Ch66. It'll pick up programs on C63 and C60, but not C50, nor C66 nor C68. And yet the Lounge STB picks it up fine. As I get 100% signal quality on the channels I can pick up, I doubt if it is a distribution system problem or boost problem.
Do you have any ideas how I can get ITV etc?
ThanksBobMonday 7 May 2007 5:30PM
Lytham St. Annes Thanks.
Well I did some problem elimination today and I cannot understand the results I've been getting.
(1) Bypassed all lounge equipment (VCR, SKY, Freeview) by looping the aerial socket out to the home distribution socket. Still no signal to pick up on Ch66.
(2) Dragged the PC to the lounge and hooked up directly to the aerial socket (triplexed with FM and Sat). PC tuned to Ch66 (and the others which I couldn't tune to) with quality of about 80%. Worked fine.
(3) Then I plumbed the aerial back into the lounge equipment and directly plumbed that output (Sky RF2) back into the PC. No signal/programmes found on CH66.
(4) My Rf loop is as follows:
SOCKET OUTLET > VCR IN > VCR OUT > SKY IN > RF1 (lounge TV) and RF2 (Distribution into house). My VCR outputs on approximately CH35, and SKY CH25. Even with BOTH OFF, there was no signal to be picked up off the back of the "loop".
So I changed this to:
SOCKET OUTLET > SKY IN > RF2 to PC.
Still no CH66 strength to pick up programmes.
(5) Instead of PC I placed a portable TV to look at the picture.
Now here's the rub.
I changed the SKY RF output to channel 66 and retuned the portable. The picture was horrible. Changed to 67, good picture. Ch68, bad picture. CH60 even worse picture. CH50 picture was fine.
Then I put the SKY back to CH66 and disconnected the SOCKET INLET from the AERIAL. Perfect picture on CH66. Put back incoming aerial in SKY in, and picture goes horrible. Other channels, like CH 69,perfect. It appears that the Digital Channels on which ITV is broadcast is getting interference.
This suggests interference on CH66 is occurring with the INCOMING SIGNAL. This does not make any sense to me at all as it appears that with the Sky box in the loop and with it on CH25, CH66 is still getting severe interference on the incoming signal.
I am confused.Bob: If you add a local RF signal (from the Sky Digibox) to an incoming Freeview signal it will cause a noisy picture... You could try using a Y-splitter to add the RF out signals to the signal from the roof aerial, rather than looping the signal though the Digibox. The 64QAM mode than multiplex 2 might not help either. BobTuesday 8 May 2007 4:03PM
Lytham St. Annes Because I pipe both the Freeview and Digibox outputs around the house, and the former needs a TV signal to work, I have no option but to feed the TV signal and the RF's through the same loop.
However, some more "investigation" also revealed another issue. I rewired the part of the circuit which feeds my PC and two other TV's at the back of the house. This "leg" goes through two low loss splitters. I connected the (long) RF cable from the aerial directly to one loftbox which only then fed this leg. No other RF's introduced into the equation. Result: still no CH66 on the sweep for channels. So I took off the Philes SLx2B amplifier I have at my PC and took it into the roof as close to the incoming cable as I could. As I already had a coupler for diplexing the FM, I just amplified the UHF bit as early as I could. Result: I could pick up CH66 programmes.
So I'd say I also have a siganl issue over the longest arm of my circuit.
So I've orderd a Televes 1 Way Masthead Triplexing amplifier that will utilise the Sat LNB power to boost the incoming UHF. I will probably have to use attenuators at the point of use, but this will be a big step along the way.
As my "PC" leg also have two TV's which also watch Sky, I have no option but to have the SKy RF (Ch25) alongside the Freeview channels (Ch66,68,63,50,40,43).
I'll let you know how I get on when I re do my cabling set up.Bob: Let us know how it goes. BobWednesday 9 May 2007 3:28PM
Lytham St. Annes Progress Report:
Televes masthead type Triplexer amp arrived today. What a nice bit of kit that is. Impressed!
Installation was a cinch as I already had the UHF, VHF and Sat cables already split and joined with low loss connections, so it was a simple case of inserting them into the appropriate holes in the triplexer. I put the amp at about 50% gain. I used the Sat cable to feed the triplexed signal directly to the "sat" cable which runs to the triplex outlet box in the lounge, then the UHF feed back into the house.
Immediately I found that both Channel 4 and Channel 5 analogue were for intents and purposes perfect, whereas before CH5 was so snowy as to be unwatchable.
However, Sky on Ch25 was abysmmal. Freeview (via VCR on CH 33) was 99% perfect, just a hint of ghosting. Nothing to get worried about. I tried just about all the other channels to transmit Sky via, and I found Ch 38 to the the best.
Now the best bit, my PC now is able to pick up over 60 channels on its Freeview PCI card! Including all the ITV programmes. Whey hey!
My extra long leg I used two Loftboxes in series to boost the signal to the studio with the PC. One TV was split out before the next two splits to the studio, and this had ghosting problems due to signal strength being too high. A just put a -3db splitter before the TV and fed that to the TV. Perfect. All other TV's are fine, including two in the studio.
So, the route cause was signal strength/quality. Lesson: amplify early to reduce interference, rather than amplify later when you amplify both the signal AND interference!
In summary, I have tuned all Digital channels off Winter Hill AND run 2 x other RF analogue signals in the same loop and get perfect pictures. If it wasn't for this site I would not have learnt about the different ways in which digital is piggybacked on the same UHF channels as the analogue signals.JuanMonday 10 September 2007 1:03PM
Hi, I have the following problem. I have brought to the UK a Spanish TV. I have tuned all channels ok. I have good picture, but no sound in any of the channels. I don't know if this is a problem of the TV itself or has to do with digital/analogue settings or the signal.
Many thanks for your attention.
Best!Juan: The UK uses PAL-I, spain PAL-B/G, the result - no sound. Use an external Freeview box and SCART cable if you wish to watch UK TV on your Spanish TV. rohSaturday 12 January 2008 6:12PM
HELP PLEASE. I Have a digital mobile phone, which mean to get digital tv and radio signal but when i try to search it find about 20 radio channels but cant hear any sound ,also the tv cant pick any signal. any idea please let me knowthe phone has a ars sign .also in setting ca vid -ca agent- band settings has band -3 china, band-3 other ,l-band and all band option.
thankyouHannahSunday 3 February 2008 1:11PM
Hi, we have 2 set top boxes. One picks up all the channels, but the other box which also records and pauses live tv, will only pick up BBC one, 2,3,4, Virgin 1, dave, E4+1 and a few others. Is there a reason for this? It just seems strange because we can get all the channels on one box and not the other. Hannah: Are they connected to the same aerial? steveoMonday 17 March 2008 3:31PM
Manchester dear sir
several people in our post code area m38 9tn are expereincing freezing on c66 we are all located near to a new mobile mast,can a transmitter on this mast throw the signal?
winter hill is within a stone throw and visable from ground level,they have all had new AERIALS fitted by several different companies.
We checked with a meter and this was confrimed that the signal on this channel was very poor. (M389OP).SharonSaturday 10 May 2008 6:34PM
Bury Saturday 10th May 2008, Winter Hill digital freeview transmission - All ITV channels were unavailable on the TV via my Humax 9200T so I did a re-scan. It would appear that Winter Hill are not actually transmitting these channels. Ihave tried a manual scan on Channel 66, 834mhz, but this does not find any channels at all. I want to watch and record various ITV & Channel 4/5 programmes but it is currently impossible. Does anyone know why? Can anyone advise me how to access these channels please?andySaturday 10 May 2008 9:31PM
what part of bolton are you in there are some serious problems with reception on channel 66 & 68 if you live in bl5 westhoughton or hindley green ofcomm have been out and as of yet cannot find what is causing this problem. As far as iam aware this is the only problem in bolton.june mSunday 18 May 2008 9:53AM
Hi i have a n new philips lcd tv with built in freeveiw but have no outside ariel as i have sky digital... we have noticed that sometimes the picture goes lighter and darker even when watching dvds. is this somehting to do with the freeview????june m: No, you are not using Freeview at all. This problem is usually a slightly disconnected SCART cable between the Sky box and the TV. Peter StocksFriday 10 October 2008 8:14AM
Stockport ive just bought a panasonic dvd recorder with dvb tuner. everythiing is working fine except i get major pixilation on ch66. I also have a panasonic tv with tuner which does not have the same problem. Ive attached an attenuator to the cable but this does not solve the problem. Any ideas what i can try nextmichael hardyThursday 30 October 2008 6:15PM
in reply to peter stocks post of 10 oct i too bought a new panasonic tv and a panasonic hdd recorder.the tv is fine, but i get pixilation on channel 66 on the recorder.i live in blackpool so my local transmitter is also winter hill.could the problem be a weak signal or is the tuner in the recorder too sensitive?AidaThursday 30 October 2008 7:15PM
London hi, i live in Islington (n7) and i have stop receiving almost all my freeview channels (all bbc, channel 4, five, etc). I am currently only reciving channels from the multiplex C (e.g. 11, 19, 30. etc). Is there anyone else who is experiencing the same problem? My understanding is that we have a communal aerial but the county has not received any other complaint about it and at this time the contractors have already gone. I have tried resetting my digital tv many times but that has not sorted the problem. Do anyone have any advice? Many thanksmichael hardy: It will be the tuner being not sensitive enough I would have thought. Peter StocksSaturday 13 December 2008 10:50PM
Bagillt In reply to my own post of 10th Oct and M Hardy 30th October. I tried several things to solve the problem of interference on ch66. Attenuator, power adjusters etc etc etc. Nothing worked. I contacted our local Panasonic repair centre and they suggested that the unit was faulty and should be returned. Did so and have not had a problem since. Since I have had the replacement I have noticed how quiet it is ( even when in standby). The previous version used to HUM. Suggesting that it was the HD or FAN interfereing with the signal.Peter Stocks: I'm pleased you have found the location of the fault. John MulderWednesday 2 December 2009 9:23PM
I have 2 freeview boxs, one gets all channels in both rooms, the other gets no 3, 4, 5 and other itv channels, have looked for them on other channels to no avail, any ideas anyone.
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