Hi, Hopefully someone will be able to offer some advice and assistance. I'm concious this may be bit long winded but please bear with me. I got a Digivox -T, flashed it successfully and tested it on an existing Ch0ru$ MMDS connection.Everything worked fine. So i know my box is good. I also got one of these integrated aerials with p/s By a very great and weird coincidence one of my neighbours had guys working on his MMDS aerial today.I stopped and got chatting to them. Turns out they were an 'unofficial' outfit.No questions asked. Anyway, I got them to go onto my roof and check the signal. They had a signal 'reader'.From my aerial they could get 26dB from Cork Airport and something similar from Clashmore. They had just set up my neighbours aerial and have pointed it to Clashmore .They tried one of their own aerials (Ch0ru$ type - Mesh and down converter) and were able to get a reading of 73dB pointing at Clashmore from my roof.They said this would be sufficient signal. They wouldn't sell me the aerial alone.They wanted me to buy the whole install off them minus the box.I politely refused. Now i have some questions: - Do these signal strength figures look correct ? What would be the cut off signal strength (dB) to get a usuable signal? Im concious that they wanted to flog me a package so am slightly worried that they may have 'cooked' the results using my aerial. - They also mentioned that the downconverter used to pick up signal from Clashmore is different to the one used from Cork Airport ? The numbers 271 and 214 respectively (could be mistaken) were mentioned as a difference between the 2.Cork airport would be about 7 miles away, not great line of sight.Clashmore would be more like 40 miles away. On the websites selling the mesh aerials/down converters there doesn't appear to be any difference or mention as to which transmitter you are pointing at.Is it something i should be aware of if i buy one of these high gain mesh aerials? Is there any source of these in Ireland ? I did try a rough install of my own aerial and manually scanned at 698, 706, 714 722 etc. but had zero signal. Thanks in advance for any assistance or advice. gLo.
that aerial should work fine, lots of people here have the same one working. A good line of site is important though. I believe that yagi aerial is only good for upto 15miles, so clashmore might be too far for you. I dont know the exact db figures but I believe they need to be up around the 70ish figure. The 271/214 figures you mention are probably the starting frequencies, these would be different for each site, but using the yagi aerial/downconverter and not the offical ones you need to add 4400 I believe to the starting, which would make your starting freq around 654 etc etc. The other thing to check is to make sure you have the polarity correct and then just patience in tweaking the aerial, it is possible to have some signal on one frequency and nothing on others till you get it bang on.
Hi, Thanks for taking the time to reply. I realised that the person who was testing the signal strength using my aerial, on my roof was looking at the wrong frequency.They were expecting the Choru$ freqs. As you correctly point our the Yagi shifts it up by about 440. I installed Aerial and to my surprise i got an adequate signal. Signal strength 85% and quality 72%. I have calculated that the Clashmore transmitter is at least 30 miles away (as crow flies), but i do have direct line of sight. My conslusion is that despite not being particularly well built or sturdy the integrated aerials are well capable. Thanks again for your input gLog
Hello Glog, I have been looking at ur forum and am getting stuck on a similar issue. I am similar to you in the fact i am 13km from the airport and 40km from clashmore. i have the same aerial as you and box also. I set it all up for the first time (aerial roughly mounted) and am unable to pick up signal.the firmware installed no prob,so i think i am ready to go. Did you use satelite lead for connection from the aerial to downconverter and then the downconverter to box, this seems to fit the screw connections better?
Is it me or is it Grounhog Day? Think i remember this exact post from a good while back or else on another forum!!!
Tom, Which post are you referring to ? The original post is from October 2008. The new poster has used the search function, found a similar issue and asked further questions. Whats your point ?
Roight i have all the same issues as above no signal seems fairly straight forward trying to hook one up for a bud in Blarney. Not sure what to point at out here north side maybe as in telecoms building got line of sight to that ????. Is that the only 2 transponders clashmore and airport ? has to be more than that.
yep i have pointed her at the airport as ALL the neighbours are i have the yagi with digivox t and about 1 foot of cable between down sampler and digivox. All i get is no sig no matter what i do. The yagi came packaged and i just fixed the pole part to the base there was carboard like material behind the little circular white plate i left it as is or am i casuing my no signal ? -do i need to remove the cardboard behind the base plate ? ther were no instructions witht he ariel im guessing leave it as packaged. Any how hope some one can help im around 6-8 miles as crow flies with clear line of sight . I tried everything on the old analouge chorus antenna (mesh)on the roof and same thing no signal. Im thinking of getting the mesh dish can i use the downsampler for the yagi [-]++++++++ ariel on the mesh dish ? i hear alot about starting freqs is that like start man scan from around 665 ish or ?????
Firstly, fix your ariel securely to fixed position, pointing directly to transmitter with clear line of sight, run cable to downconverter side of power supply, other side connects to input of Digivox T, make sure that when fitting f-connectors to co-axial cable that outside shield does not come into contact with inner core. plug in power-supply and digivox T.(firmware loaded) Start manually scanning at freq 658mHz (658000) and keep going up at 8 mHz intervals, if you start to bring in chanells, keep going up to 834mHz, that should be the whole spectrum! If you have no sucess this way, either your setup or your equipment is faulty
there is also a horizontal (H) and vertical (V) setting on this ariel, u will see these on back of white box, set it to H when mounting , i think Cork transmitts horizontally as its a main transmitter
