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Nomen Nescio
Guest

Thu Jan 02, 2020 12:09 pm   



poor buggers listening to ABC AM as the ash clouds
circle in the SE coastline.....

news18
Guest

Fri Jan 03, 2020 3:34 am   



On Thu, 02 Jan 2020 11:09:55 +0100, Nomen Nescio wrote:

Quote:
poor buggers listening to ABC AM as the ash clouds circle in the SE
coastline....


does AM still exist?
I thought it was FM< now and don't mobile phones all recieve FM?.

Trevor Wilson
Guest

Fri Jan 03, 2020 5:16 am   



On 3/01/2020 12:34 pm, news18 wrote:
Quote:
On Thu, 02 Jan 2020 11:09:55 +0100, Nomen Nescio wrote:

poor buggers listening to ABC AM as the ash clouds circle in the SE
coastline....

does AM still exist?
I thought it was FM< now and don't mobile phones all recieve FM?.


**Yes, AM still exists. Not all cell 'phones receive FM. In fact, when
some of the cell towers were disabled during the fires, firefighters
suddenly found that their communications were non-existent. In previous
years, they relied on HF radio (which doesn't require cell towers).
Betcha they switch back to HF radio quick smart.

--
Trevor Wilson
www.rageaudio.com.au

Clifford Heath
Guest

Fri Jan 03, 2020 5:34 am   



On 3/1/20 2:16 pm, Trevor Wilson wrote:
Quote:
On 3/01/2020 12:34 pm, news18 wrote:
On Thu, 02 Jan 2020 11:09:55 +0100, Nomen Nescio wrote:

poor buggers listening to ABC AM as the ash clouds circle in the SE
coastline....

does AM still exist?
I thought it was FM< now and don't mobile phones all recieve FM?.

**Yes, AM still exists. Not all cell 'phones receive FM. In fact, when
some of the cell towers were disabled during the fires, firefighters
suddenly found that their communications were non-existent. In previous
years, they relied on HF radio (which doesn't require cell towers).
Betcha they switch back to HF radio quick smart.


WICEN (mostly emergency-trained hams) has overnight stepped up to the
NSW Volunteer Rescue Association's call (just yesterday morning) for
volunteer radio operators to go into the bushfire areas to provide
24-hour emergency communications. One of my local club members from
Sydney arrived in Bega late last night, and has worked the night shift
already.

VRA were able to borrow the Rural Fire Service communications bus from
Dubbo to take to Bega. For those outside Australia who don't know, these
are major summer holiday beach areas crowded with people who have been
queuing for as much as 20 hours on narrow roads to get out - with no
hope of refueling or even getting food or water. To even travel in there
at the moment is a significant act of bravery.

It is a damning indictment on our government that these volunteer
organisations are at the leading edge of the response - especially the
firey's themselves, not just these radio folk - while government sits
and wrings their hands, makes insubstantial offers to pay small sums for
those who have given up their jobs and income to save other people's
houses even after losing their own - and even our head of government is
on video *assaulting* unwilling people in his attempts to get photo-ops.

It's utterly disgusting. I hope he doesn't come near me, or I'd deck him
- and I'm really not a violent man.

https://wicen.org.au/
http://rescue.org.au/

Computer Nerd Kev
Guest

Sat Jan 04, 2020 1:39 am   



Trevor Wilson <trevor_at_rageaudio.com.au> wrote:
Quote:
On 3/01/2020 12:34 pm, news18 wrote:
On Thu, 02 Jan 2020 11:09:55 +0100, Nomen Nescio wrote:

poor buggers listening to ABC AM as the ash clouds circle in the SE
coastline....

does AM still exist?
I thought it was FM< now and don't mobile phones all recieve FM?.


**Yes, AM still exists.


Certainly, I can pick up more channels on AM than FM where I live.
That's probably even more the case in mountainous areas where these
big fires are.

> Not all cell 'phones receive FM.

I was only vaguely aware that a few do, never tried myself. I can't
imagine that they'd be very good at it - the antennas are designed
for much higher frequencies, unless they have a dedicated one which
seems unlikely.

Quote:
In fact, when
some of the cell towers were disabled during the fires, firefighters
suddenly found that their communications were non-existent. In previous
years, they relied on HF radio (which doesn't require cell towers).
Betcha they switch back to HF radio quick smart.


Though they'd also then have their big HF aerials twanging around as
they go under trees.

I don't know about NSW, but in Victoria they've recently switched
(quite pointlessly in my opinion) to digital radio over VHF instead
of analogue (which was also VHF). Digital is of course less tollerant
of poor reception, so apparantly they've been busy setting up extra
repeaters (most likely on those phone towers) in order to compensate.

So it sounds like the towers have got burnt or their power cut.
Shouldn't have been much of a surprise that it might happen. Heck
there could have just happened to be a fire during a widespread
blackout and they'd have had problems.

Plus it means that individuals have to pay $$$ to replace their old
analogue listening sets with digital ones (which nobody I meet
can figure out how to operate anyway, all being packed with 1001
useless (at least to them) features to justify their price).

In my area they still haven't got digital working properly even
to begin with. They put off the change-over for years because
their tests kept showing not enough coverage, and now for this fire
season they're repeating over both digital and analogue (the radios
used by the CFA handle either) so that people can switch over to
analogue if in an area where the digital channel doesn't have
reception.

That's only meant to be a temporary fix here, so presumably the
districts in the East don't have a fall-back analogue channel
pre-arranged. All of the other districts had switched to digital
before us.

--
__ __
#_ < |\| |< _#

Xeno
Guest

Sat Jan 04, 2020 1:50 am   



On 4/1/20 10:39 am, Computer Nerd Kev wrote:
Quote:
Trevor Wilson <trevor_at_rageaudio.com.au> wrote:
On 3/01/2020 12:34 pm, news18 wrote:
On Thu, 02 Jan 2020 11:09:55 +0100, Nomen Nescio wrote:

poor buggers listening to ABC AM as the ash clouds circle in the SE
coastline....

does AM still exist?
I thought it was FM< now and don't mobile phones all recieve FM?.


**Yes, AM still exists.

Certainly, I can pick up more channels on AM than FM where I live.
That's probably even more the case in mountainous areas where these
big fires are.

Not all cell 'phones receive FM.

I was only vaguely aware that a few do, never tried myself. I can't
imagine that they'd be very good at it - the antennas are designed
for much higher frequencies, unless they have a dedicated one which
seems unlikely.


They are quite good at it since they use *headphones* as the AM antenna.
Yes, no AM without headphones (on a lead) plugged in.
Quote:

In fact, when
some of the cell towers were disabled during the fires, firefighters
suddenly found that their communications were non-existent. In previous
years, they relied on HF radio (which doesn't require cell towers).
Betcha they switch back to HF radio quick smart.

Though they'd also then have their big HF aerials twanging around as
they go under trees.

I don't know about NSW, but in Victoria they've recently switched
(quite pointlessly in my opinion) to digital radio over VHF instead
of analogue (which was also VHF). Digital is of course less tollerant
of poor reception, so apparantly they've been busy setting up extra
repeaters (most likely on those phone towers) in order to compensate.

So it sounds like the towers have got burnt or their power cut.
Shouldn't have been much of a surprise that it might happen. Heck
there could have just happened to be a fire during a widespread
blackout and they'd have had problems.

Plus it means that individuals have to pay $$$ to replace their old
analogue listening sets with digital ones (which nobody I meet
can figure out how to operate anyway, all being packed with 1001
useless (at least to them) features to justify their price).

In my area they still haven't got digital working properly even
to begin with. They put off the change-over for years because
their tests kept showing not enough coverage, and now for this fire
season they're repeating over both digital and analogue (the radios
used by the CFA handle either) so that people can switch over to
analogue if in an area where the digital channel doesn't have
reception.

That's only meant to be a temporary fix here, so presumably the
districts in the East don't have a fall-back analogue channel
pre-arranged. All of the other districts had switched to digital
before us.



--

Xeno


Nothing astonishes Noddy so much as common sense and plain dealing.
(with apologies to Ralph Waldo Emerson)

Jasen Betts
Guest

Sat Jan 04, 2020 4:39 am   



On 2020-01-03, Computer Nerd Kev <not_at_telling.you.invalid> wrote:
Quote:
Trevor Wilson <trevor_at_rageaudio.com.au> wrote:
On 3/01/2020 12:34 pm, news18 wrote:
On Thu, 02 Jan 2020 11:09:55 +0100, Nomen Nescio wrote:

poor buggers listening to ABC AM as the ash clouds circle in the SE
coastline....

does AM still exist?
I thought it was FM< now and don't mobile phones all recieve FM?.


**Yes, AM still exists.

Certainly, I can pick up more channels on AM than FM where I live.
That's probably even more the case in mountainous areas where these
big fires are.

Not all cell 'phones receive FM.

I was only vaguely aware that a few do, never tried myself. I can't
imagine that they'd be very good at it - the antennas are designed
for much higher frequencies, unless they have a dedicated one which
seems unlikely.


they use the headphone cable as the antenna, same as most other compact FM receivers.



--
Jasen.

FMurtz
Guest

Sat Jan 04, 2020 5:18 am   



news18 wrote:
Quote:
On Thu, 02 Jan 2020 11:09:55 +0100, Nomen Nescio wrote:

poor buggers listening to ABC AM as the ash clouds circle in the SE
coastline....

does AM still exist?
I thought it was FM< now and don't mobile phones all recieve FM?.

FM is only for people interested in music useless for anyone else.


Clocky
Guest

Sat Jan 04, 2020 8:46 am   



On 3/01/2020 9:34 am, news18 wrote:
Quote:
On Thu, 02 Jan 2020 11:09:55 +0100, Nomen Nescio wrote:

poor buggers listening to ABC AM as the ash clouds circle in the SE
coastline....

does AM still exist?


Most certainly.

Quote:
I thought it was FM< now and don't mobile phones all recieve FM?.


*If* a mobile receives FM, it needs to be in an area of good reception
unlike AM which will travel much further and can be picked up with even
the cheapest AM transistor radio from a long way away, especially at night.

--

Clocky
Guest

Sat Jan 04, 2020 8:51 am   



On 4/01/2020 7:50 am, Xeno wrote:
Quote:
On 4/1/20 10:39 am, Computer Nerd Kev wrote:
Trevor Wilson <trevor_at_rageaudio.com.au> wrote:
On 3/01/2020 12:34 pm, news18 wrote:
On Thu, 02 Jan 2020 11:09:55 +0100, Nomen Nescio wrote:

poor buggers listening to ABC AM as the ash clouds circle in the SE
coastline....

does AM still exist?
I thought it was FM< now and don't mobile phones all recieve FM?.


**Yes, AM still exists.

Certainly, I can pick up more channels on AM than FM where I live.
That's probably even more the case in mountainous areas where these
big fires are.

Not all cell 'phones receive FM.

I was only vaguely aware that a few do, never tried myself. I can't
imagine that they'd be very good at it - the antennas are designed
for much higher frequencies, unless they have a dedicated one which
seems unlikely.

They are quite good at it since they use *headphones* as the AM antenna.
Yes, no AM without headphones (on a lead) plugged in.


Radios in mobiles don't receive AM. They receive FM and use the
headphone cable as the antenna. The reason they do not have AM radios is
because the frequencies mobile phones generate internally squash out AM
reception.

Quote:

In fact, when
some of the cell towers were disabled during the fires, firefighters
suddenly found that their communications were non-existent. In previous
years, they relied on HF radio (which doesn't require cell towers).
Betcha they switch back to HF radio quick smart.

Though they'd also then have their big HF aerials twanging around as
they go under trees.

I don't know about NSW, but in Victoria they've recently switched
(quite pointlessly in my opinion) to digital radio over VHF instead
of analogue (which was also VHF). Digital is of course less tollerant
of poor reception, so apparantly they've been busy setting up extra
repeaters (most likely on those phone towers) in order to compensate.

So it sounds like the towers have got burnt or their power cut.
Shouldn't have been much of a surprise that it might happen. Heck
there could have just happened to be a fire during a widespread
blackout and they'd have had problems.

Plus it means that individuals have to pay $$$ to replace their old
analogue listening sets with digital ones (which nobody I meet
can figure out how to operate anyway, all being packed with 1001
useless (at least to them) features to justify their price).

In my area they still haven't got digital working properly even
to begin with. They put off the change-over for years because
their tests kept showing not enough coverage, and now for this fire
season they're repeating over both digital and analogue (the radios
used by the CFA handle either) so that people can switch over to
analogue if in an area where the digital channel doesn't have
reception.

That's only meant to be a temporary fix here, so presumably the
districts in the East don't have a fall-back analogue channel
pre-arranged. All of the other districts had switched to digital
before us.





--

Xeno
Guest

Sat Jan 04, 2020 9:21 am   



On 4/1/20 5:51 pm, Clocky wrote:
Quote:
On 4/01/2020 7:50 am, Xeno wrote:
On 4/1/20 10:39 am, Computer Nerd Kev wrote:
Trevor Wilson <trevor_at_rageaudio.com.au> wrote:
On 3/01/2020 12:34 pm, news18 wrote:
On Thu, 02 Jan 2020 11:09:55 +0100, Nomen Nescio wrote:

poor buggers listening to ABC AM as the ash clouds circle in the SE
coastline....

does AM still exist?
I thought it was FM< now and don't mobile phones all recieve FM?.


**Yes, AM still exists.

Certainly, I can pick up more channels on AM than FM where I live.
That's probably even more the case in mountainous areas where these
big fires are.

Not all cell 'phones receive FM.

I was only vaguely aware that a few do, never tried myself. I can't
imagine that they'd be very good at it - the antennas are designed
for much higher frequencies, unless they have a dedicated one which
seems unlikely.

They are quite good at it since they use *headphones* as the AM
antenna. Yes, no AM without headphones (on a lead) plugged in.

Radios in mobiles don't receive AM. They receive FM and use the
headphone cable as the antenna. The reason they do not have AM radios is
because the frequencies mobile phones generate internally squash out AM
reception.


Yes, correct, FM not AM. My bad. That's what I keep a couple of small
Samsungs for, as portable FM radios. Does anybody use AM any more? My
car radio has AM but I never flick it to AM.
Quote:


In fact, when
some of the cell towers were disabled during the fires, firefighters
suddenly found that their communications were non-existent. In previous
years, they relied on HF radio (which doesn't require cell towers).
Betcha they switch back to HF radio quick smart.

Though they'd also then have their big HF aerials twanging around as
they go under trees.

I don't know about NSW, but in Victoria they've recently switched
(quite pointlessly in my opinion) to digital radio over VHF instead
of analogue (which was also VHF). Digital is of course less tollerant
of poor reception, so apparantly they've been busy setting up extra
repeaters (most likely on those phone towers) in order to compensate.

So it sounds like the towers have got burnt or their power cut.
Shouldn't have been much of a surprise that it might happen. Heck
there could have just happened to be a fire during a widespread
blackout and they'd have had problems.

Plus it means that individuals have to pay $$$ to replace their old
analogue listening sets with digital ones (which nobody I meet
can figure out how to operate anyway, all being packed with 1001
useless (at least to them) features to justify their price).

In my area they still haven't got digital working properly even
to begin with. They put off the change-over for years because
their tests kept showing not enough coverage, and now for this fire
season they're repeating over both digital and analogue (the radios
used by the CFA handle either) so that people can switch over to
analogue if in an area where the digital channel doesn't have
reception.

That's only meant to be a temporary fix here, so presumably the
districts in the East don't have a fall-back analogue channel
pre-arranged. All of the other districts had switched to digital
before us.







--

Xeno


Nothing astonishes Noddy so much as common sense and plain dealing.
(with apologies to Ralph Waldo Emerson)

Clocky
Guest

Sat Jan 04, 2020 12:37 pm   



On 4/01/2020 3:21 pm, Xeno wrote:
Quote:
On 4/1/20 5:51 pm, Clocky wrote:
On 4/01/2020 7:50 am, Xeno wrote:
On 4/1/20 10:39 am, Computer Nerd Kev wrote:
Trevor Wilson <trevor_at_rageaudio.com.au> wrote:
On 3/01/2020 12:34 pm, news18 wrote:
On Thu, 02 Jan 2020 11:09:55 +0100, Nomen Nescio wrote:

poor buggers listening to ABC AM as the ash clouds circle in the SE
coastline....

does AM still exist?
I thought it was FM< now and don't mobile phones all recieve FM?.


**Yes, AM still exists.

Certainly, I can pick up more channels on AM than FM where I live.
That's probably even more the case in mountainous areas where these
big fires are.

Not all cell 'phones receive FM.

I was only vaguely aware that a few do, never tried myself. I can't
imagine that they'd be very good at it - the antennas are designed
for much higher frequencies, unless they have a dedicated one which
seems unlikely.

They are quite good at it since they use *headphones* as the AM
antenna. Yes, no AM without headphones (on a lead) plugged in.

Radios in mobiles don't receive AM. They receive FM and use the
headphone cable as the antenna. The reason they do not have AM radios
is because the frequencies mobile phones generate internally squash
out AM reception.

Yes, correct, FM not AM. My bad. That's what I keep a couple of small
Samsungs for, as portable FM radios. Does anybody use AM any more? My
car radio has AM but I never flick it to AM.


In case of emergency or in fringe reception areas, AM is the go.

news18
Guest

Sat Jan 04, 2020 3:15 pm   



On Fri, 03 Jan 2020 14:16:50 +1100, Trevor Wilson wrote:

Quote:
On 3/01/2020 12:34 pm, news18 wrote:
On Thu, 02 Jan 2020 11:09:55 +0100, Nomen Nescio wrote:

poor buggers listening to ABC AM as the ash clouds circle in the SE
coastline....

does AM still exist?
I thought it was FM< now and don't mobile phones all recieve FM?.


**Yes, AM still exists. Not all cell 'phones receive FM. In fact, when
some of the cell towers were disabled during the fires, firefighters
suddenly found that their communications were non-existent. In previous
years, they relied on HF radio (which doesn't require cell towers).
Betcha they switch back to HF radio quick smart.


The coms black outs were predicted when they decided to do away with the
HF. didn't they actually sell off the HF bands?

news18
Guest

Sat Jan 04, 2020 3:17 pm   



On Fri, 03 Jan 2020 23:39:02 +0000, Computer Nerd Kev wrote:

Quote:
Trevor Wilson <trevor_at_rageaudio.com.au> wrote:
On 3/01/2020 12:34 pm, news18 wrote:
On Thu, 02 Jan 2020 11:09:55 +0100, Nomen Nescio wrote:

poor buggers listening to ABC AM as the ash clouds circle in the SE
coastline....

does AM still exist?
I thought it was FM< now and don't mobile phones all recieve FM?.


**Yes, AM still exists.

Certainly, I can pick up more channels on AM than FM where I live.
That's probably even more the case in mountainous areas where these big
fires are.

Not all cell 'phones receive FM.

I was only vaguely aware that a few do, never tried myself. I can't
imagine that they'd be very good at it - the antennas are designed for
much higher frequencies, unless they have a dedicated one which seems
unlikely.

I tink they all came with ear phoes and that the antenna was the ear
phone cord?

news18
Guest

Sat Jan 04, 2020 3:19 pm   



On Sat, 04 Jan 2020 18:37:22 +0800, Clocky wrote:


> In case of emergency or in fringe reception areas, AM is the go.

who actually broadcasts on AM now?
I supose I could dig out my multiband luggable and listen.

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