Snow Go Area

In article
s.com, scribeth thus
On Jan 8, 1:03*pm, John Legon wrote:
Conclusion: *Reception of Freeview is fine here with sub-zero temperatures
outside, provided there is enough snow on the roof to insulate the loft :-)

I've never heard of a faulty masthead amp where the fault only showed
up when it was cold. Hot, yes. Coax cable sometimes shows up
temperature related faults. The most common happens in mid summer
during a hot spell. The cable goes OC mid-evening when the cable cools
down, having been very hot.



The next wave of bother will be in a few days, when the snow starts to
slide off the roofs, taking cables with it and hitting wall-mounted
dishes on the way down.

Many guineas to be made then)..

Bill

--
Tony Sayer

" wrote in message
...
On Jan 8, 1:03 pm, John Legon wrote:
Conclusion: Reception of Freeview is fine here with sub-zero temperatures
outside, provided there is enough snow on the roof to insulate the loft
:-)

I've never heard of a faulty masthead amp where the fault only showed
up when it was cold.

You don't have a wide range of experience with different models in
different countries and climates then.

Hot, yes.

Which makes and models and what temperatures?
Is that the excuse you give to charge people for work you corrected?
One of those jobs when you will never name the previous company
incase they sue you?


Coax cable sometimes shows up
temperature related faults.


No it doesn't. It needs to be damaged first. The only exception is
the rigid feeds which have a spacer inside a solid copper outer or
a magnesium type insulator. They can be hygroscopic if they are
not terminated correctly or minimum radius of bends is not observed.

The most common happens in mid summer
during a hot spell. The cable goes OC mid-evening when the cable cools
down, having been very hot.

What absolute rubbish. If that is what you are telling people in order to
get a sale then you need investigating. You're starting to sound like one
of those cowboys on the undercover investigative consumer shows.


The next wave of bother will be in a few days, when the snow starts to
slide off the roofs, taking cables with it and hitting wall-mounted
dishes on the way down.

Really? If snow can hit a dish and knock it off a wall or reposition it
then it was never installed correctly. Snow doesn't take cables down.
Are you actually offering installation services as I doubt you should be
with the rubbish you talk on the newsgroup. It shows you have a
misguided belief about the way aerials and cables are made and operate
under different conditions. You are one person I would NEVER employ
based on what you post in this group alone.

I bet you sell "special digital aerials" and "special digital cable" !

Bill

In article ,
IanT wrote:

" wrote in message
...


The next wave of bother will be in a few days, when the snow starts to
slide off the roofs, taking cables with it and hitting wall-mounted
dishes on the way down.

Really? If snow can hit a dish and knock it off a wall or reposition it
then it was never installed correctly. Snow doesn't take cables down.
Are you actually offering installation services as I doubt you should be
with the rubbish you talk on the newsgroup. It shows you have a
misguided belief about the way aerials and cables are made and operate
under different conditions. You are one person I would NEVER employ
based on what you post in this group alone.

Might I suggest that Bill's comments are about other people's installation
where he is called in to deal with a problem caused by a rubbish
installation.

--
From KT24

Using a RISC OS computer running v5.11

At 13:41:26 Fri, 8 Jan 2010, charles
wrote:
In article ,
John Legon wrote:
Having lost the same muxes a few days ago, when there was no snow on the
roof but the temperature outside was four degrees below zero, it is now
clear that the amp doesn't work well at a temperature much below freezing.

The temperature ratings of most capacitors do not include negative
temperatures.

Well, in a previous thread I mentioned that I thought the problem might
be an electrolytic capacitor, though I doubt that a drift in value would
be critical in this application. There is also the fact that masthead
amps in general don't stop working because of negative temperatures.

Perhaps the age of the amp is significant - it's been running 24/7 for
at least 15 years - though it still works fine at normal temperatures.
An electrolytic at the end of its lifetime?

--
John Legon

At 15:01:23 Fri, 8 Jan 2010, Jim Lesurf wrote in
article :
In article , John Legon
wrote:

Shortly before Christmas I reported the complete loss of three muxes,
and attributed this to the layer of snow on the roof at that time. I
also suggested that the sub-zero temperature might be affecting the
masthead- type amplifier.

Alternatively, the cold is accompanied by a vertical profile in the air
density, etc, which is reducing the signal level at your location. So may
have nothing to do with your amplifier.

This would have to be a very localised effect. There is no noticeable
loss of signal at the other end of the house where I have an external
aerial on a mast, again with masthead amplifier...

"charles" wrote in message
...
In article ,
IanT wrote:

"Pikey Gob****e" wrote in message
...


The next wave of bother will be in a few days, when the snow starts to
slide off the roofs, taking cables with it and hitting wall-mounted
dishes on the way down.

Really? If snow can hit a dish and knock it off a wall or reposition it
then it was never installed correctly. Snow doesn't take cables down.
Are you actually offering installation services as I doubt you should be
with the rubbish you talk on the newsgroup. It shows you have a
misguided belief about the way aerials and cables are made and operate
under different conditions. You are one person I would NEVER employ
based on what you post in this group alone.

Might I suggest that Bill's comments are about other people's installation
where he is called in to deal with a problem caused by a rubbish
installation.

Might I suggest that Bill's comments are 95% fictional bull****.

At 07:48:23 Fri, 8 Jan 2010,
wrote in article 523ed8b5-cdc9-42e3-9d81-2a5a664
:
On Jan 8, 1:03*pm, John Legon wrote:
Conclusion: *Reception of Freeview is fine here with sub-zero temperatures
outside, provided there is enough snow on the roof to insulate the loft :-)

I've never heard of a faulty masthead amp where the fault only showed
up when it was cold.

That's very interesting. The next time the temperature's below freezing
and I start losing Freeview muxes, I'll go up into the loft and give the
amplifier a quick blast with my hot air gun ! If that doesn't fix it then
I'll think again.

At 17:05:10 Fri, 8 Jan 2010, tony sayer wrote in
article :

What part of the TV band 4/5 is in use?..

Channels 56 to 65

On 08/01/2010 6:58 PM, jamie powell wrote:
wrote in message
...
In ,
wrote:

"Pikey wrote in message
...


The next wave of bother will be in a few days, when the snow starts to
slide off the roofs, taking cables with it and hitting wall-mounted
dishes on the way down.

Really? If snow can hit a dish and knock it off a wall or reposition it
then it was never installed correctly. Snow doesn't take cables down.
Are you actually offering installation services as I doubt you should be
with the rubbish you talk on the newsgroup. It shows you have a
misguided belief about the way aerials and cables are made and operate
under different conditions. You are one person I would NEVER employ
based on what you post in this group alone.

Might I suggest that Bill's comments are about other people's installation
where he is called in to deal with a problem caused by a rubbish
installation.

Might I suggest that Bill's comments are 95% fictional bull****.



Did you get the day off school today?
--
JohnT

"JohnT" wrote in message
...

Did you get the day off school today?

You're still with us, then...