[linux-dvb] Struggling with Astra 2D (Freesat) / Happauage Nova-HD-S2

[linux-dvb] Struggling with Astra 2D (Freesat) / Happauage Nova-HD-S2

[TD]

Hi all.  I'm at the end of my tether here so hopefully someone can offer a
clue.  I'm building a MythTV box with a Happauage WinTV Nova-HD-S2 PCI card
which I'd like to use to receive Freesat via Astra (2D) here in the UK.  I've
built a DVB-T MythTV box in the past, so I'm not too green.

The card itself is recognized by my 2.6.30 kernel, and I've got the firmware
loading.
[  139.141728] i2c-adapter i2c-2: firmware: requesting dvb-fe-cx24116.fw
[  139.176026] cx24116_firmware_ondemand: Waiting for firmware upload(2)...
[  143.271646] cx24116_load_firmware: FW version 1.20.79.0
[  143.271653] cx24116_firmware_ondemand: Firmware upload complete

However, that's where the good bits end.  I tried a channel scan in Myth which
was mostly underwhelming, and I realised that it was mostly picking up
channels from Astra 2A and 2B, which are encrypted, and not what I want.

I then tried the (dvb)scan utility, as it operates at a lower level and lets
me see what's going on more.  I had output like:
$ scan -x 0 /usr/share/dvb/dvb-s/Astra-28.2E
scanning /usr/share/dvb/dvb-s/Astra-28.2E
using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0'
<***snip ***>
initial transponder 12629000 V 6111000 3
initial transponder 12692000 V 19532000 1
>>> tune to: 11720:h:0:29500
DVB-S IF freq is 1120000
WARNING: >>> tuning failed!!!
>>> tune to: 11720:h:0:29500 (tuning failed)
DVB-S IF freq is 1120000
WARNING: >>> tuning failed!!!
>>> tune to: 11740:v:0:27500
DVB-S IF freq is 1140000
0x0000 0x1776: pmt_pid 0x0000 BSkyB -- Bravo+1 (running, scrambled)
0x0000 0x1777: pmt_pid 0x0000 BSkyB -- LIVING2 (running, scrambled)
0x0000 0x177c: pmt_pid 0x0000 BSkyB -- Challenge+ (running, scrambled)
0x0000 0x177e: pmt_pid 0x0000 BSkyB -- Bravo+ (running, scrambled)
0x0000 0x1788: pmt_pid 0x0000 BSkyB -- Bravo~ (running, scrambled)
...

I'm not sure what "tuning failed" means, but I bet it has something to do with
my problem.  NB I can watch the few clear channels that it does pick up e.g.
Sky News, Luxe etc.

The setup is that this is a newly-built flat, with a double F-socket on the
wall.  I followed it down to the distribution panel in the basement, and it's
connected to a Delta MS 5024 N multiswitch.  From what I could make out, said
switch has four cables going in (vertical 0khz, horiz 0khz, vertical 22khz,
horiz 0khz), and lots of cables going to the flats.

I don't know much about it, but it seems to me that if the switch is designed
to have Sky digiboxes plugged into it, that it is designed to appear as an LNB
to equipment, therefore I don't need to mess around with DiSEqC or anything
similar?  No magic going on?

Anyway, I'd really appreciate some guidance here as I just don't know what to
do, or how I can debug this further.

(I'm going to borrow a Sky box from a friend tonight just to verify the uplink
to the flat is working properly.)

-- 
TD


_______________________________________________
linux-dvb users mailing list
For V4L/DVB development, please use instead linux-media@vger.kernel.org
linux-dvb@linuxtv.org
http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb

Re: [linux-dvb] Struggling with Astra 2D (Freesat) / Happauage Nova-HD-S2

[Goga777]

Приветствую, TD

you have to use scan-s2
http://mercurial.intuxication.org/hg/scan-s2

or

dvb2010 scan
http://hg.kewl.org/dvb2010/


also you can use szap-s2
http://mercurial.intuxication.org/hg/szap-s2

Re: [linux-dvb] Struggling with Astra 2D (Freesat) / Happauage Nova-HD-S2

[TD]

On 2009-11-02, Goga777 <goga777@bk.ru> wrote:
> Приветствую, TD
>
> you have to use scan-s2
> http://mercurial.intuxication.org/hg/scan-s2

Hi, and thanks for your quick reply.

I tried it but no better:
<snip>
initial transponder DVB-S  12692000 V 19532000 1/2 AUTO AUTO
initial transponder DVB-S2 12692000 V 19532000 1/2 AUTO AUTO
----------------------------------> Using DVB-S
>>> tune to: 11720:hC34S0:S0.0W:29500:
DVB-S IF freq is 1120000
WARNING: >>> tuning failed!!!
>>> tune to: 11720:hC34S0:S0.0W:29500: (tuning failed)

and the channels.conf was no better than before - it didn't include *one* BBC
channel, for example.

>
> or
>
> dvb2010 scan
> http://hg.kewl.org/dvb2010/

Once I got it working, same:
Astra 2A/2B/2D/Eurobird 1 (28.2E) 10714 H DVB-S QPSK 22000 5/6 ONID:0 TID:0
AGC:0% SNR:0% 
    Can't tune

Astra 2A/2B/2D/Eurobird 1 (28.2E) 10729 V DVB-S QPSK 22000 5/6 ONID:0 TID:0
AGC:0% SNR:0% 
    Can't tune

Where do I go from here?
-- 
TD

Re: [linux-dvb] Struggling with Astra 2D (Freesat) / Happauage Nova-HD-S2

[Another Sillyname]

2009/11/3 TD <topper.doggle@googlemail.com>:
> On 2009-11-02, Goga777 <goga777@bk.ru> wrote:
>> Приветствую, TD
>>
>> you have to use scan-s2
>> http://mercurial.intuxication.org/hg/scan-s2
>
> Hi, and thanks for your quick reply.
>
> I tried it but no better:
> <snip>
> initial transponder DVB-S  12692000 V 19532000 1/2 AUTO AUTO
> initial transponder DVB-S2 12692000 V 19532000 1/2 AUTO AUTO
> ----------------------------------> Using DVB-S
>>>> tune to: 11720:hC34S0:S0.0W:29500:
> DVB-S IF freq is 1120000
> WARNING: >>> tuning failed!!!
>>>> tune to: 11720:hC34S0:S0.0W:29500: (tuning failed)
>
> and the channels.conf was no better than before - it didn't include *one* BBC
> channel, for example.
>
>>
>> or
>>
>> dvb2010 scan
>> http://hg.kewl.org/dvb2010/
>
> Once I got it working, same:
> Astra 2A/2B/2D/Eurobird 1 (28.2E) 10714 H DVB-S QPSK 22000 5/6 ONID:0 TID:0
> AGC:0% SNR:0%
>    Can't tune
>
> Astra 2A/2B/2D/Eurobird 1 (28.2E) 10729 V DVB-S QPSK 22000 5/6 ONID:0 TID:0
> AGC:0% SNR:0%
>    Can't tune
>
> Where do I go from here?
> --
> TD
>
>
> _______________________________________________
> linux-dvb users mailing list
> For V4L/DVB development, please use instead linux-media@vger.kernel.org
> linux-dvb@linuxtv.org
> http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb

Are you running myth .21 or .22?

Re: [linux-dvb] Struggling with Astra 2D (Freesat) / Happauage Nova-HD-S2

[BOUWSMA Barry]

On Tue, 3 Nov 2009, TD wrote:

> On 2009-11-02, Goga777 <goga777@bk.ru> wrote:
> > Приветствую, TD
> >
> > you have to use scan-s2
> > http://mercurial.intuxication.org/hg/scan-s2
> 
> Hi, and thanks for your quick reply.
> 
> I tried it but no better:
> <snip>
> initial transponder DVB-S  12692000 V 19532000 1/2 AUTO AUTO
> initial transponder DVB-S2 12692000 V 19532000 1/2 AUTO AUTO
> ----------------------------------> Using DVB-S
> >>> tune to: 11720:hC34S0:S0.0W:29500:

First of all, some background info, in case you aren't aware:

All Freesat services are presently DVB-S.  There are currently
no DVB-S2 transponders carrying any FTA services, although
there is always the possibility that the existing FTA HD services
which are on DVB-S transponders may move to DVB-S2 in the not-
too-distant future, particularly when the terrestrial UK
DVB-T2 services start before the end of the year, and Channel 4
and Five join the existing ITV and BBC HD services.

Therefore the failure to tune DVB-S2 transponders has nothing
to do with reception of Freesat.


Enough background, what I see from the above is that the
frequency of 11720 has a symbol rate of 29500 which I know
is what is used by the BSkyB encrypted programmes.  So your
ability to tune isn't going to help you see any additional
services, just as those in your original post are also
scrambled Sky programmes.

If it concerns you that you can't tune this DVB-S2 transponder,
then you'll need the advice of others with DVB-S2 familiarity.



> and the channels.conf was no better than before - it didn't include *one* BBC
> channel, for example.

The BBC channels, as well as most ITV, Channel 4, and similar
``interesting'' Freesat services, are on the Astra 2D satellite,
as per your subject.  This bird covers the frequencies from
10714250 h 22000 through 10935500 v 22000.  Its footprint is
a narrow beam focussed on the UK, and can only be received
with some difficulty elsewhere that the remaining signals
from the other Astra and Eurobird satellites deliver useable
signals.  That is, were you to be somewhere outside the UK,
you might need to more accurately position your dish.  But
that shouldn't be your problem as per your original message.


> Once I got it working, same:
> Astra 2A/2B/2D/Eurobird 1 (28.2E) 10714 H DVB-S QPSK 22000 5/6 ONID:0 TID:0
> AGC:0% SNR:0% 
>     Can't tune

> Where do I go from here?

I note that your first listed frequency is 11720, just above
the transition from low to high band, in your first message.
Do you get any results with success at any frequencies below 
11700, and do your successes above 11700 include both horizontal
and vertically polarised services?

If you have a complete lack of any results with one particular
polarisation/band combination, then suspect possibly your
cabling, unless a regular FTA/Freesat/Sky receiver connected
to the same is able to successfully find all services.

You should be able to receive services from 11200 to 11700
in both bands with DVB-S, as well as above 11700, as the
former are not on a particular spotbeam.

Hope this info helps.  Feel free to send me off-list your
`scan' output (DVB-S) if you can't spot any patterns.


thanks,
barry bouwsma

Re: [linux-dvb] Struggling with Astra 2D (Freesat) / Happauage Nova-HD-S2

[TD]

On 2009-11-03, Another Sillyname <anothersname@googlemail.com> wrote:
>
> Are you running myth .21 or .22?

Hi,

I'm running 0.22-fixes.
-- 
TD

Re: [linux-dvb] Struggling with Astra 2D (Freesat) / Happauage Nova-HD-S2

[Goga777]

I forgot to mention that you should use the transponders lists - ini file (for scan-s2) and xml file (for dvb2010) from
here

http://www.vdr-settings.com/download/channels/CLyngsatSP.tar.bz2


Goga



> > you have to use scan-s2
> > http://mercurial.intuxication.org/hg/scan-s2
> 
> Hi, and thanks for your quick reply.
> 
> I tried it but no better:
> <snip>
> initial transponder DVB-S  12692000 V 19532000 1/2 AUTO AUTO
> initial transponder DVB-S2 12692000 V 19532000 1/2 AUTO AUTO
> ----------------------------------> Using DVB-S
> >>> tune to: 11720:hC34S0:S0.0W:29500:
> DVB-S IF freq is 1120000
> WARNING: >>> tuning failed!!!
> >>> tune to: 11720:hC34S0:S0.0W:29500: (tuning failed)
> 
> and the channels.conf was no better than before - it didn't include *one* BBC
> channel, for example.
> 
> >
> > or
> >
> > dvb2010 scan
> > http://hg.kewl.org/dvb2010/
> 
> Once I got it working, same:
> Astra 2A/2B/2D/Eurobird 1 (28.2E) 10714 H DVB-S QPSK 22000 5/6 ONID:0 TID:0
> AGC:0% SNR:0% 
>     Can't tune
> 
> Astra 2A/2B/2D/Eurobird 1 (28.2E) 10729 V DVB-S QPSK 22000 5/6 ONID:0 TID:0
> AGC:0% SNR:0% 
>     Can't tune

Re: [linux-dvb] Struggling with Astra 2D (Freesat) / Happauage Nova-HD-S2

[Simon Kenyon]

[-- Attachment #1: Type: text/plain, Size: 332 bytes --]

TD wrote:
> I tried it but no better:
> <snip>
> initial transponder DVB-S  12692000 V 19532000 1/2 AUTO AUTO
> initial transponder DVB-S2 12692000 V 19532000 1/2 AUTO AUTO
see if this channels.conf file is of any use to you
i'm sure it is horribly out of date
but i know that the BBC services work
i do use them with myth
--
simon

[-- Attachment #2: channels.conf.gz --]
[-- Type: application/gzip, Size: 13018 bytes --]

Re: [linux-dvb] Struggling with Astra 2D (Freesat) / Happauage Nova-HD-S2

[TD]

<removed linux-dvb x-post>

On 2009-11-03, BOUWSMA Barry <freebeer.bouwsma@gmail.com> wrote:
> On Tue, 3 Nov 2009, TD wrote:
>
> First of all, some background info, in case you aren't aware:
>
> All Freesat services are presently DVB-S.  There are currently
> no DVB-S2 transponders carrying any FTA services, although
> there is always the possibility that the existing FTA HD services
> which are on DVB-S transponders may move to DVB-S2 in the not-
> too-distant future, particularly when the terrestrial UK
> DVB-T2 services start before the end of the year, and Channel 4
> and Five join the existing ITV and BBC HD services.
>
> Therefore the failure to tune DVB-S2 transponders has nothing
> to do with reception of Freesat.

I wasn't aware - I thought the Freesat HD channels were DVB-S2, that's why I
got that card.  Now upon further research, it appears that talk of DVB-S2 with
Freesat has died down, so looks like I've wasted some money (for now).

> Enough background, what I see from the above is that the
> frequency of 11720 has a symbol rate of 29500 which I know
> is what is used by the BSkyB encrypted programmes.  So your
> ability to tune isn't going to help you see any additional
> services, just as those in your original post are also
> scrambled Sky programmes.
>
> If it concerns you that you can't tune this DVB-S2 transponder,
> then you'll need the advice of others with DVB-S2 familiarity.

No, it just concerns me that I can't get Freesat from Astra 2D.

>> Once I got it working, same:
>> Astra 2A/2B/2D/Eurobird 1 (28.2E) 10714 H DVB-S QPSK 22000 5/6 ONID:0 TID:0
>> AGC:0% SNR:0% 
>>     Can't tune
>
>> Where do I go from here?
>
> I note that your first listed frequency is 11720, just above
> the transition from low to high band, in your first message.
> Do you get any results with success at any frequencies below 
> 11700, and do your successes above 11700 include both horizontal
> and vertically polarised services?

My channels.conf contains both horizontal and vertical channels, but nothing
below 11700.  So it looks like I'm not getting anything via low band?

> If you have a complete lack of any results with one particular
> polarisation/band combination, then suspect possibly your
> cabling, unless a regular FTA/Freesat/Sky receiver connected
> to the same is able to successfully find all services.

As per my OP:

= The setup is that this is a newly-built flat, with a double F-socket on the
= wall.  I followed it down to the distribution panel in the basement, and it's
= connected to a Delta MS 5024 N multiswitch.  From what I could make out, said
= switch has four cables going in (vertical 0khz, horiz 0khz, vertical 22khz,
= horiz 0khz), and lots of cables going to the flats.

Surely it must be the switch, I don't see what else it can be, especially if
there is no special signal that a Sky box sends down the wire to the switch,
that my setup would need to replicate.

There is a caveat above, which is that we are the first people in the block,
so who knows what reception others are getting.  I've already had the cables
from the switch to our flat moved to a different switch, as when I mentioned
the situation to the builder (still on-site) he told me that people in another
block had had a problem on that switch.

However, it's always possible that the cables aren't labelled properly, we
have found that with other services.  *sigh*  So perhaps the cables that were
moved, weren't the ones that lead to our flat!

>
> You should be able to receive services from 11200 to 11700
> in both bands with DVB-S, as well as above 11700, as the
> former are not on a particular spotbeam.
>
> Hope this info helps.  Feel free to send me off-list your
> `scan' output (DVB-S) if you can't spot any patterns.
>

Thanks for your very informative assistance.  I will borrow a Sky box and plug
it in before I continue the thread.  :)

-- 
TD

Re: [linux-dvb] Struggling with Astra 2D (Freesat) / Happauage Nova-HD-S2

[BOUWSMA Barry]

On Wed, 4 Nov 2009, TD wrote:

> <removed linux-dvb x-post>

Oooh, that's a mistake (from my view) -- it means your reply
doesn't appear in my inbox, and it's only through luck that I
find it amongst the uninteresting (to me) posts that I check
infrequently on linux-media via gmane -- I thought there was
to be a separation between developer mail, and dvb-user mail,
and this clearly falls into the latter.  And is more my bag.
But that's a rant I don't want to get into, as I'm in the
minority here.



> > Therefore the failure to tune DVB-S2 transponders has nothing
> > to do with reception of Freesat.
> 
> I wasn't aware - I thought the Freesat HD channels were DVB-S2, that's why I
> got that card.  Now upon further research, it appears that talk of DVB-S2 with
> Freesat has died down, so looks like I've wasted some money (for now).

Happy to offer the background.  I wouldn't say you've wasted
money -- rather, you've future-proofed yourself.  Sadly the
Freesat specs don't appear to have mandated the more efficient
H.264 AVC video codec for SD resolution services, so there is
no possibility of that for a Freesat-only (no BSkyB) service
that wants to save transmission costs, yet still be received
by the handful of non-HD-able receivers out there.  I'd liken
it to my decision not to buy any DAB-only receiver without the
DAB+ (and DMB) capability that is presently in use (if not in
the UK or other countries), or any further DVB-S cards without
-S2.  And DVB-T2.  What seems like a waste of money today will
guarantee you don't have to spend as much later -- with your
DVB-S2 card and a suitably positioned dish, you could be
receiving the french-german `arte' where occasional programmes
capture my interest, as well as other FTA services that have
not yet interested me in a pure -S2 form.

Also, while the Beeb may not presently be transmitting -S2 for
their HD service, I wouldn't rule it out.  There's a long and
sordid history behind Freesat and the Continent that limits
what is available via Freesat and its quality to what the 2D
satellite can deliver, and any future services (such as the
recent Freesat `Five') will need to be shoehorned into that
already overfilled space.



> My channels.conf contains both horizontal and vertical channels, but nothing
> below 11700.  So it looks like I'm not getting anything via low band?

Thanks for confirming this.  This points to a potential, but
unlikely, problem with your device, that it can't switch into
the low band (I had a problem where one of my devices could
not receive anything in the high band without hackery, or a
multiswitch which spoke to it differently).

If you are not aware of it, in case it helps, the switching
between low (below 11700-ish) and high band is normally
accomplished with a 22kHz tone signal, absent for low band.
It can also be accomplished by a particular DiSEqC signal
which my one device speaks to the multiswitch I got which
solved that problem, that being the opposite to what you are
experiencing.

The other possibility, given that two of the four inputs to
your multiswitch work, is that the two low-band inputs have
been crossed.



> > If you have a complete lack of any results with one particular
> > polarisation/band combination, then suspect possibly your
> > cabling, unless a regular FTA/Freesat/Sky receiver connected
> > to the same is able to successfully find all services.
> 
> As per my OP:
> 
> = The setup is that this is a newly-built flat, with a double F-socket on the
> = wall.  I followed it down to the distribution panel in the basement, and it's
> = connected to a Delta MS 5024 N multiswitch.  From what I could make out, said
> = switch has four cables going in (vertical 0khz, horiz 0khz, vertical 22khz,
> = horiz 0khz), and lots of cables going to the flats.
> 
> Surely it must be the switch, I don't see what else it can be, especially if
> there is no special signal that a Sky box sends down the wire to the switch,
> that my setup would need to replicate.

Yeah, a third possibility could be the switch.  I glossed over the
details in your original post about the switch, and completely
forgot it was newly-built.

While I would normally expect everything to work in a new
installation, I've read enough to convince me otherwise.
As a confession, when I have to replace the cabling into my
multiswitch, these days I determine the proper wiring by a
process of elimination as to which of the four cables goes
where.  I recently had to do this with my dish pointed at
28,2/28,5°E and I'm always wary when I have the mathematically
improbable result of the randomly selected cables being
connected to the right inputs.  But enough of my confessions
why you wouldn't hire me to install anything you care about.



> There is a caveat above, which is that we are the first people in the block,
> so who knows what reception others are getting.  I've already had the cables
> from the switch to our flat moved to a different switch, as when I mentioned

Different switch, or different output of the same switch?
Not that it's important.


> the situation to the builder (still on-site) he told me that people in another
> block had had a problem on that switch.

Here is where my unfamiliarity with building practices in the
different countries rears its ugly head.  (Not to mention the
differences between the same language wielded in different
regions, but I'm going to try to hide that by not mentioning
it...)



> However, it's always possible that the cables aren't labelled properly, we
> have found that with other services.  *sigh*  So perhaps the cables that were
> moved, weren't the ones that lead to our flat!

If it makes you feel better, I've noted that my cheap^H^H^H^H^H
affordable multiswitch has a couple outputs where what I do on
them affects what the remaining outputs see.  Technically, there
is leakage so that if I'm watching a high-band channel on the
aforementioned output, the other outputs are unable to receive
any low-band signals.  Or else they're blocked from receiving
any other of the four satellite positions.  I've simply capped
those outputs so as not to use them, and so far things have
been fine.

What I mean to say is, these days, not everything works perfectly.
I've worked around this by future-proofing my purchase with more
outputs than normally needed.  An unlikely possibility could be
that someone else is tuned into a high-band signal and the 22kHz
switching signal (constant) is leaking into your input, causing
it to switch to high bands when tuning.

Although, normally, for the above, there is some overlap, so
that you may see some results for low-band transponders but
they are actually services sent in high-band.

Note that I'm blathering in the above, but I just want you to
know there are plenty of possibilities for causing problems
that have nothing to do with your kernel or DVB stack.  Also,
it's either early or late pub o'clock from which I'm posting.



> Thanks for your very informative assistance.  I will borrow a Sky box and plug
> it in before I continue the thread.  :)

You're welcome.  With the results you have (no low-band at all)
I'd include a possible cable mismatch between the two low-band
inputs from the LNB.  That is, two of the four cables may be
wrong, those feeding Auntie's services amongst others, but
from this distance I don't want to commit myself to that.


Just for your information, the four cables from the single LNB
going into the multiswitch and ideally appearing as one
universal LNB are switched by the following, apart from a
particular DiSEqC sequence:

Vertical or horizontal polarisation, regardless of lo/hi band,
is selected by a voltage from the receiver:  13 or 14V for
vertical, and nominally 18V for horizontal.  You have no problems
in the high band with this switching, it seems.

Low- or high-band is selected by the absence (low-band) or
presence (high-band) of a 22kHz tone superimposed on the
voltage.  This is where you appear to be having problems, as
your high-band works.  But in your case, a multiswitch also
comes into play.

I hope my remote diagnosis is useful.  If your borrowed Sky
box works, then you may have an obscure hardware/linux
problem.  If it doesn't, than slap the installer about
the head for a spell.


thanks,
barry bouwsma

Re: [linux-dvb] Struggling with Astra 2D (Freesat) / Happauage Nova-HD-S2

[BOUWSMA Barry]

Replying to myself is the first sign that I need to be committed
to a mental institution.  So here goes.

On Wed, 4 Nov 2009, BOUWSMA Barry wrote:

> The other possibility, given that two of the four inputs to
> your multiswitch work, is that the two low-band inputs have
> been crossed.

Thinking more about this, I don't think this is the case,
if someone hasn't already corrected me -- there is a range
of frequencies which, last time I scanned, were shared by
both polarisations, with identical symbol rates.  Although
this was not legitimate input for an earlier `scan' and I've
hacked a script to work around this.

### frequency pairs, h+v, mostly 27500 from 11200 upwards
S 11222170 H 27500
S 11223670 V 27500
#
S 11259670 V 27500
####   This has an odd SR.... NO MORE...  S 11264470 H 22000
S 11261170 H 27500
#
S 11307000 V 27500
S 11307000 H 27500
#
S 11343000 V 27500
####   This has an odd SR....  NO MORE...  S 11344000 H 22000
S 11344500 H 27500
#
S 11388830 H 27500
S 11390330 V 27500

This continues, more or less, through 11500.  In other words,
if your two low-band inputs to the multiswitch were reversed,
you'd still get something on the above frequencies, even if
the actual parameters you'd be reading wouldn't match what is
actually transmitted.

Sorry for the misleading info I posted earlier.  If there is
any cabling problem, I'm positive it would have been noted
as the BBC channels are certain to be ones checked by any
halfway competent technician.

As far as the possibility that your tuner card isn't
properly switching into low-band, if you were to modify
your scan file so that the successfully-tuned frequencies
above 11700 are repeated but with a value corresponding
to the different IF frequency, and you can again receive
the same services, then that would point to that problem.

I'd give an example, but that would require me to think.
But here's the idea -- if you've tuned 11720, that's with
an IF of 10600.  With an IF of 9750, you'd want to be tuning
to 11720 - (10600-9750) MHz.

If that makes any sense.


thanks,
barry bouwsma