cellphone? interference to satellite IF

On 14 Jul 2004 15:40:11 GMT, o (Bill) wrote:

So what goes on at weekends that might cause it? How odd.

More users. I am thinking about a bandwidth issue, when extra power
equals a greater data rate.

Cardman
http://www.cardman.com
http://www.cardman.co.uk

As the second L.O in the LNB is 10600 Mhz. This means that this 11623
MHz signal can also be downlinked at 1023 Mhz. And watching it at this
frequency instead means no more interference.

This sounds like a very good idea. I just tried it on my analyser and it works.
Can a Sky box be persuaded to do this? I have very little to do with them,
since my responsibility stops at the wallplate.

Bill

As the second L.O in the LNB is 10600 Mhz. This means that this 11623
MHz signal can also be downlinked at 1023 Mhz. And watching it at this
frequency instead means no more interference.

This sounds like a very good idea. I just tried it on my analyser and it works.
Can a Sky box be persuaded to do this? I have very little to do with them,
since my responsibility stops at the wallplate.

Bill

On Sat, 17 Jul 2004 00:06:45 +0100,
lid (Alan Pemberton) wrote:

Bill wrote:

This sounds like a very good idea. I just tried it on my analyser and it
works. Can a Sky box be persuaded to do this? I have very little to do
with them, since my responsibility stops at the wallplate.

We had a discussion elsewhere that revealed that if you disable the
22kHz switching on the Sky digibox it will continue to receive signals
using the low-band IF at least as far as the default transponder (which
it normally considers 'high band').

I can't see any way of persuading it to do the opposite, though.

Interestingly enough on my web site I sell 22 KHz Tone Generators,
that will certainly introduce the missing signal into the line.

There is your answer...

The only problem then is figuring out the desired tuning frequency in
order to manually tune in this station on the higher L.O. To save you
the effort, then that is 10,773 MHz.

Kind of a long method to get one station, or correctly transponder,
but you would certainly get it interference free.

I happened to sell one of these 22 KHz Tone Generators yesterday that
I remember sending off. It went to a customer in France I believe.

Cardman.
http://www.cardman.com
http://www.cardman.co.uk

On Sat, 17 Jul 2004 00:06:45 +0100,
lid (Alan Pemberton) wrote:

Bill wrote:

This sounds like a very good idea. I just tried it on my analyser and it
works. Can a Sky box be persuaded to do this? I have very little to do
with them, since my responsibility stops at the wallplate.

We had a discussion elsewhere that revealed that if you disable the
22kHz switching on the Sky digibox it will continue to receive signals
using the low-band IF at least as far as the default transponder (which
it normally considers 'high band').

I can't see any way of persuading it to do the opposite, though.

Interestingly enough on my web site I sell 22 KHz Tone Generators,
that will certainly introduce the missing signal into the line.

There is your answer...

The only problem then is figuring out the desired tuning frequency in
order to manually tune in this station on the higher L.O. To save you
the effort, then that is 10,773 MHz.

Kind of a long method to get one station, or correctly transponder,
but you would certainly get it interference free.

I happened to sell one of these 22 KHz Tone Generators yesterday that
I remember sending off. It went to a customer in France I believe.

Cardman.
http://www.cardman.com
http://www.cardman.co.uk