Black Gold Media Centre Digital - Check if You Should have Good Reception
The link below gives a guide to
expected reception quality from your postcode:-
FreeView
Digital TV Homepage (www.freeview.co.uk)
In order to get a better guide,
it is necessary to take into account the terrain between your location and
the transmitter.
Follow the instructions
and the links below to get a picture of the terrain between you and your nearest
transmitter.
For this you need to know your
Ordinance Survey Grid Reference and the Grid Reference of your nearest Transmitter.
Enter your Post Code at the link
below the examples and click on the 'Post Code' button, then click the 'Convert'
button.
Note down the corresponding Grid Reference. Note the Land Ranger (LR) Grid
Ref. This is 2 letters followed by 6 digits. e.g. SP395257
See our example below:
The site then returns the table below. We've highlighted the LR Grid Reference
in blue.
| OS X | 439598 | | OS Y | 225736 | | Post Code | OX7 4NP | | Lat (WGS84) | N51:55:43 ( 51.928737 ) | | Long (WGS84) | W1:25:32 ( -1.425531 ) | | LR |
SP395257 |
| mX | -158689 | | mY | 6753590 | | M | Actual : FFFD941F_00670D36 Street : FFFD94DC_00670CDC Road : FFFDB610_0066FF30 Road64 : FFFE0C00_00668A00 Road128: FFFE0C00_00659000 |
| Click
here to see location |
Post
Code to Grid Reference Converter (http://www.streetmap.co.uk/streetmap.dll?GridConvert?)
In the link below, enter your LR Grid Reference
you obtained above or just your postcode.
Note the closest Transmitter to you. Also Note the Transmitter's Grid Reference
(OS grid Ref.) and its height
above the local ground level (AOD)
also the height of the ground at the transmitter site (OD).
The right hand column gives a guide to the type of aerial you might need
to receive from each transmitter listed.
The figures you need are highlighted
for our example in the table below.
Note that the transmission aerials
for different multiplexes are often at different heights on the transmitter
mast.
e.g. Oxford, BBC is at 277m, but the other multiplexes are a bit higher up
the mast at 289m. Not that a few metres will make much difference to the plot
as it only has a resolution of 500m.
Guide
to Likely Reception Quality and Details of Nearest Transmitters (http://www.wolfbane.com/cgi-bin/tvd.exe)
DTT transmitters within "local" range of OS grid
reference SP395257
| Transmitter |
1:
BBC
| 2:
Digital 3 & 4
| A:
SDN
| B:
BBC
| C:
Crown Castle
| D:
Crown Castle
| Gp |
Pol |
OS
grid ref. |
OD
m |
Field
dBµV/m |
Distance
miles |
Bearing
degrees |
Antenna
(suggestion) |
| UHF
| ERP
W |
AOD
m |
UHF
| ERP
W |
AOD
m |
UHF
| ERP
W |
AOD
m |
UHF
| ERP
W |
AOD
m |
UHF
| ERP
W |
AOD
m |
UHF
| ERP
W |
AOD
m |
| Oxford |
34 |
10k |
277 |
68 |
10k |
289 |
51 |
6k |
289 |
52 |
6k |
277 |
48 |
8k |
289 |
29 |
8k |
289 |
W |
H |
SP567105 |
130 |
50 |
14 |
131 |
Extra
hi-gain |
| Hannington
|
50 |
10k |
352 |
43 |
10k |
352 |
40 |
10k |
352 |
46 |
10k |
352 |
44 |
10k |
352 |
41 |
10k |
352 |
B |
H |
SU527568 |
229 |
33 |
44 |
169 |
Amplified
extra hi-gain |
| Crystal
Palace |
25 |
20k |
321 |
22 |
20k |
321 |
32 |
20k |
321 |
28 |
20k |
321 |
34 |
20k |
321 |
29 |
20k |
321 |
A |
H |
TQ339712 |
110 |
32 |
68 |
120 |
Amplified
extra hi-gain |
| Sandy
Heath |
42 |
20k |
267 |
45 |
20k |
279 |
43 |
20k |
279 |
67 |
20k |
197 |
40 |
20k |
279 |
46 |
20k |
279 |
E |
H |
TL204494 |
55 |
31 |
52 |
74 |
Amplified
extra hi-gain |
| Sutton
Coldfield * |
41 |
8k |
395 |
44 |
8k |
395 |
47 |
8k |
395 |
51 |
8k |
395 |
52 |
8k |
395 |
55 |
10k |
395 |
E |
H |
SK113003 |
169 |
28 |
50 |
339 |
Amplified
extra hi-gain |
Go to the link given below and
scroll down to the bottom of the page. You will see a table like the one we've
shown below.
Enter the Grid Ref for where you
are in the "NGR of base station box", enter the grid reference for
your transmitter in the other box. Enter the height of your aerial above ground
(15m is usually a good enough estimate for most
houses.) Enter the height of the Transmitter aerial above ground. You will
need to take the OD from the AOD to get this figure. So in our example above
AOD = 277m, OD
= 130m. Therefore we enter 277-130 = 147m in
the box for "height above ground for distant aerial"
The website then shows a plot of
the terrain, if any part of the graph comes close to the red line, then you
may have some problems with reception.
Plot
of Terrain between two grid references (www.megalithia.com/elect/terrain.html)
For or example the plot looks like
this:

All of the above of course don't
take into account any trees, buildings or other man made obstacles that may
be between your aerial and the transmitter. But it should give a good idea
if there is anything of significance in the way.
Ofcom
Transmitter Guide
Shows channels / frequencies
and power output for all UK digital transmitters.
General Reception / Tuning Issues
The most important thing is always to ensure you have a good quality signal.
First of all check the expected quality of your signal from the following links:
The link below gives a guide to expected reception quality from your postcode:-
FreeView Digital TV Homepage (www.freeview.co.uk) you can get a more in depth guide to your expected signal quality by looking at our Reception More Info page.
At the moment Digital DVB-T signals are transmitted at very low power compared to the standard Analogue signals, so as not to affect existing reception. This means that often a better aerial is required to receive Digital TV.
Checking your Signal Quality:
- Download our Field Test Application from here Support/Download/GDI DVBFieldTest 5.19.zip (or it should be on the driver disk if you purchased direct form GTA)
- Unzip the file to a convenient place.
- Double click on the .exe file to open the program. Then click the 'Run Full Test' button. This will go though all UK channels, even those frequencies not transmitted by your local transmitter, so most will say "Is the aerial Plugged In".
It take ten minutes or so to complete. Once complete click 'Save Log'. This will save a file on your root drive c:\dvb.log, please email these to us at support@gta-ltd.co.uk and we will check them. If you also include your postcode, we can check your local transmitter.
- Alternatively, you can see our tech guide to the results, if you are of a mind... Test Decipher PDF
Things that make Signal Quality Poor:
- Low Signal Strength, a long way from transmitter or obstacles in the way.
- Poor Aerial, lead or connectors
- Low quality or older analogue signal boosters
- Noisy motherboard
- Card situated close to other card that is noisy, graphics and WLAN cards are often noisy
- Other external electrical noise
MCE Support
Frequently Asked Questions:
MPEG Decoders /Codecs
Q. My card is installed and I find all the channels when I scan, but when I try to watch TV I get the following error message: " Decoder Error, the video decoder has either malfunctioned or is not installed..."
A. MCE requires a MCE approved MPEG2 Decoder to be installed in order to watch TV or view digital streams. This is not included as part of the MCE2005 operating system. DVD Software usually includes this as part of the package. Do a internet search for "MPEG2 Decoder" and you should find lots of links or visit 'The Green Button' site for a more detailed explanation: The Green Button MCE MPEG Decoders.
You can download a Microsoft Utility that will check if the decoders you have installed are OK: http://www.microsoft.com/downloads/details.aspx?FamilyId=DE1491AC-0AB6-4990-943D-627E6ADE9FCB&displaylang=en
Q. My TV Picture sometimes looks jerky on fast moving scenes.
A. With all picture problems you first need to make sure it is not related to signal issues. Follow our guide first.
If your signal definitely checks out OK, the it could be a decoder problem. Check the deocder you have installed is MCE compatible, also check that you have the latest drivers for your Graphics card (That too needs to be MCE compatible) http://www.microsoft.com/downloads/details.aspx?FamilyId=DE1491AC-0AB6-4990-943D-627E6ADE9FCB&displaylang=en
Or you can check which decoder is currently installed by Clicking START > RUN then type dvdupgrd /detect and you'll get a window displaying your installed decoders:

MCE Tuning Problems
See our general guide to tuning and reception issues first. But there are also one or two MCE related issues:
Q. MCE does not detect any channels when I scan. I've run your DVB Field Test and that doesn't see ANY channels either.
A. Check that at the top of the Test Log for your country code. Make sure it is the correct code (44) for the UK. If it is not correct MCE will try to tune for the wrong country.
Go to ‘Control Panel’, ‘Regional and Language Options’ and ensure ‘Regional Options’ is set to UK (or your country) , also on the ‘Advanced’ tab check that ‘Language for non-Unicode programs’ is also set to UK(or your country) .
The try a retest / retune.
Q. MCE tuned to most of the channels, but now when I try to watch the channels they're not listed in the guide. If I do a rescan I still don't see the channels.
A. Once again make sure you still have a good signal! MCE uses a database to store all the information it needs to tune to channels. Sometimes it can get this database corrupted and cannot tune properly. Even if you rescan, it says it is rescanning, but still uses the corrupt database.
We need to remove the database and force it to do a clean scan:
- Delete the *.sdf files in the following folder C:\Documents and Settings\AllUsers\Application Data\Microsoft\eHome\EPG
They have very long alpha-numeric file names. No need to delete the sam.sdf if it's there.
- Reboot and then Open Media Center and go to 'Settings' - 'TV' - 'Set up Tv Signal' follow the instructions. (Make sure you 'Set up TV Signal' not'Scan for more services'
Q. MCE 'My TV' did show ITV in the channels list, but it's now disappeared. (or any other channels for that matter, but ITV is common)
A. The problem may be associated with a miss-match between the broadcast channel data and the guide listing details. Please follow the menu selection sequence below to re-configure this relationship for the missing channels.
Start>Media Center
Settings>TV>Guide>Add Listings to Channel
Select the missing channel from the list, scroll to the bottom and select the appropriate guide listing name that is associated with the channel.
Repeat the above for each channel as necessary.
Q. My PC has been working fine for sometime. But recently when I try to watch TV sometimes, it will lock or crash.
This may be due to a known issue with MCE. MCE stores a temporary file each time it plays music or anything else. Sometimes the amount of these files gets to big for the PC to cope.
Try deleting the following Windows temp folder (note include your PC name in the directory path).
C:\Documents and Settings\*your PC name*\Local Settings\Temp
XP Support - Coming in the next few days...
Digital DVB-T TV Card Support - Coming in the next few days...
USB TV Product Support
We do not have specific USB TV related support guides just yet.
However many of the issues are common with all PC TV units.
So if your issue is reception or installation related see the the button on the left hand side relevant to the operating system you are using, MCE or XP.
Otherwise please email your query to us at support@gta-ltd.co.uk. We endeavor to respond the same day during normal working hours.
As we become aware of any questions and their solutions, we'll add them to the page.
GTA Support page for Black Gold TV Products.
GTA have been involved with the development of the Black Gold TV products from conception. We are therefore able to offer in depth technical support of the range from UK based operations. We normally try to respond to customer questions within a few hours during normal working times.
We're building our support database for Black Gold TV products. So if you have questions that are not covered, please contact us at support@gta-ltd.co.uk. We will add new content if the question/answer will affect others.
Click on the buttons to the side to select the support area that best suites the question you have.
All Black Gold support is UK based.
PCI-Express Dual Tuner S3 recovery 16/05/07:
We have been made aware of a limited number of problems with S3 recovery.
We now believe we have identified and addressed all of the issues related to the above problem.
There have been a number of reasons for cards not being detected. Most have been related to motherboard BIOS or card positioning. Contact our support team if you are experiencing problems.
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