Can a 500 mile TV antenna work for radio?
TV is digital and the signals are separated, but how will you
separate radio stations that have the same frequency?

Plus radio antennae have one contact but coax tv antenae have two?
Or do they?
How would you connect it?

--
Vasos Panagiotopoulos panix.com/~vjp2/vasos.htm
---{Nothing herein constitutes advice. Everything fully disclaimed.}---

On 2024-03-26 23:35, vjp2.at@at.BioStrategist.dot.dot.com wrote:
> Can a 500 mile TV antenna work for radio?
> TV is digital and the signals are separated, but how will you
> separate radio stations that have the same frequency?
>
> Plus radio antennae have one contact but coax tv antenae have two?
> Or do they?
> How would you connect it?
>

I don't understand a word of your questions.

--
Cheers, Carlos.

On Tue, 26 Mar 2024 22:35:00 -0000 (UTC),
vjp2.at@at.BioStrategist.dot.dot.com wrote:

>Can a 500 mile TV antenna work for radio?
>TV is digital and the signals are separated, but how will you
>separate radio stations that have the same frequency?
>
>Plus radio antennae have one contact but coax tv antenae have two?
>Or do they?
>How would you connect it?
What is a 500 mile tv antenna? In analog days I once watched Montreal
and Burlington VT. tv for an hour in Minnesota but that was a rare
skip event.

<snip>
> What is a 500 mile tv antenna?
<snip>

An antenna 500 miles long, I'm guessing.

--
Jim Whitby

Hideously disfigured by an ancient Indian curse?

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On 2024-03-27 21:18, jim whitby wrote:
> <snip>
>> What is a 500 mile tv antenna?
> <snip>
>
> An antenna 500 miles long, I'm guessing.

Me too, but that is just nuts.

--
Cheers, Carlos.

In <0m0fdkxq61.ln2@Telcontar.valinor> "Carlos E.R." <robin_listas@es.invalid> writes:

>On 2024-03-27 21:18, jim whitby wrote:
>> <snip>
>>> What is a 500 mile tv antenna?
>> <snip>
>>
>> An antenna 500 miles long, I'm guessing.

>Me too, but that is just nuts.

Sounds pretty "sanguine" to me...

https://en.wikipedia.org/wiki/Project_Sanguine

--
_____________________________________________________
Knowledge may be power, but communications is the key
dannyb@panix.com
[to foil spammers, my address has been double rot-13 encoded]

On 3/27/2024 2:01 PM, Chuck wrote:
> On Tue, 26 Mar 2024 22:35:00 -0000 (UTC),
> vjp2.at@at.BioStrategist.dot.dot.com wrote:
>
>> Can a 500 mile TV antenna work for radio?
>> TV is digital and the signals are separated, but how will you
>> separate radio stations that have the same frequency?
>>
>> Plus radio antennae have one contact but coax tv antenae have two?
>> Or do they?
>> How would you connect it?
> What is a 500 mile tv antenna? In analog days I once watched Montreal
> and Burlington VT. tv for an hour in Minnesota but that was a rare
> skip event.

I use a pair of rabbit ears for indoor FM radio, works pretty good!

On 3/26/2024 3:35 PM, vjp2.at@at.BioStrategist.dot.dot.com wrote:
> 500 mile TV antenna

https://www.reddit.com/r/cordcutters/comments/s2k8gh/1000_mile_antennas/

On 2024-03-31 17:32, Bob F wrote:
> On 3/26/2024 3:35 PM, vjp2.at@at.BioStrategist.dot.dot.com wrote:
>> 500 mile TV antenna
>
> https://www.reddit.com/r/cordcutters/comments/s2k8gh/1000_mile_antennas/
>

Oh. They are talking of distance to the transmitter. I think now I
understand the OP.

]> Can a 500 mile TV antenna work for radio?
]> TV is digital and the signals are separated, but how will you
]> separate radio stations that have the same frequency?

It can and does. I have listened to shortwave radio transmissions across
the Atlantic.

You can not separate them, except by using a directional antena. So
stations have to use different frequencies, or different time slots.

Notice that to reach those distances they bounce the signal on the
ionosphere (yes, the earth is round). They choose a frequency that
bounces on one or another of the layers, according to their intended
listener target (the distance, and direction).

Notice that there is a distance where there is no reception: there is
first the area in sight of the antena, with good reception. Then the
waves go a bit down the curve of the earth, then they get into space. In
this area there is no reception, which could be precisely 500 miles.
Then the first ionosphere bounce area starts.

Look for "skip zone".

https://en.wikipedia.org/wiki/Shortwave_radio

]>
]> Plus radio antennae have one contact but coax tv antenae have two?
]> Or do they?
]> How would you connect it?

You need an adapter.

Design of antenas is not a trivial matter, you need to read a lot.

https://en.wikipedia.org/wiki/Shortwave_radio
https://en.wikipedia.org/wiki/Shortwave_listening

--
Cheers, Carlos.

In article <7jnodkxure.ln2@Telcontar.valinor>,
Carlos E.R. <robin_listas@es.invalid> wrote:

>]> Can a 500 mile TV antenna work for radio?
>]> TV is digital and the signals are separated, but how will you
>]> separate radio stations that have the same frequency?
>
>It can and does. I have listened to shortwave radio transmissions across
>the Atlantic.
>
>You can not separate them, except by using a directional antena. So
>stations have to use different frequencies, or different time slots.
>
>Notice that to reach those distances they bounce the signal on the
>ionosphere (yes, the earth is round). They choose a frequency that
>bounces on one or another of the layers, according to their intended
>listener target (the distance, and direction).
>
>Notice that there is a distance where there is no reception: there is
>first the area in sight of the antena, with good reception. Then the
>waves go a bit down the curve of the earth, then they get into space. In
>this area there is no reception, which could be precisely 500 miles.
>Then the first ionosphere bounce area starts.
>
>Look for "skip zone".

Yup.

A similar thing *can* happen occasionally, for higher frequencies (VHF
and UHF television and radio signals). In those frequencies it's
usually referred to as "ducting" in the troposphere - the creation
of a refractive channel which can propagate these signals well
beyond their normal line-of-sight range.

Under exceptional ducting conditions, VHF signals can travel from
(e.g.) California to Hawaii - there are a few such 2-meter radio
contacts on record.

The same phenomenon can allow TV and FM-radio signals to be
picked up, occasionally, well beyond their usual range limit
(100 miles or so on VHF).

It's not something to count on, though. It's relatively rare, depends
on the season and weather and atmospheric conditions, usually fairly
short-lived, and you can be utterly certain that the duct will fall
apart (and you'll lose the TV signal) just before the Big Reveal at
the end of the episode :-)

When there's no tropo-ducting taking place, the chance of a
so-called "thousand-mile antenna" picking up a useful TV
signal from 1000 miles away is probably about as good as your
chance of winning the Powerball lottery using a grease-soiled
receipt from your local hamburger shack.

On 2024-04-01 01:13, Dave Platt wrote:
> In article <7jnodkxure.ln2@Telcontar.valinor>,
> Carlos E.R. <robin_listas@es.invalid> wrote:
>
>> ]> Can a 500 mile TV antenna work for radio?
>> ]> TV is digital and the signals are separated, but how will you
>> ]> separate radio stations that have the same frequency?
>>
>> It can and does. I have listened to shortwave radio transmissions across
>> the Atlantic.
>>
>> You can not separate them, except by using a directional antena. So
>> stations have to use different frequencies, or different time slots.
>>
>> Notice that to reach those distances they bounce the signal on the
>> ionosphere (yes, the earth is round). They choose a frequency that
>> bounces on one or another of the layers, according to their intended
>> listener target (the distance, and direction).
>>
>> Notice that there is a distance where there is no reception: there is
>> first the area in sight of the antena, with good reception. Then the
>> waves go a bit down the curve of the earth, then they get into space. In
>> this area there is no reception, which could be precisely 500 miles.
>> Then the first ionosphere bounce area starts.
>>
>> Look for "skip zone".
>
> Yup.
>
> A similar thing *can* happen occasionally, for higher frequencies (VHF
> and UHF television and radio signals). In those frequencies it's
> usually referred to as "ducting" in the troposphere - the creation
> of a refractive channel which can propagate these signals well
> beyond their normal line-of-sight range.
>
> Under exceptional ducting conditions, VHF signals can travel from
> (e.g.) California to Hawaii - there are a few such 2-meter radio
> contacts on record.
>
> The same phenomenon can allow TV and FM-radio signals to be
> picked up, occasionally, well beyond their usual range limit
> (100 miles or so on VHF).
>
> It's not something to count on, though. It's relatively rare, depends
> on the season and weather and atmospheric conditions, usually fairly
> short-lived, and you can be utterly certain that the duct will fall
> apart (and you'll lose the TV signal) just before the Big Reveal at
> the end of the episode :-)
>
> When there's no tropo-ducting taking place, the chance of a
> so-called "thousand-mile antenna" picking up a useful TV
> signal from 1000 miles away is probably about as good as your
> chance of winning the Powerball lottery using a grease-soiled
> receipt from your local hamburger shack.

:-)

Long ago, in the south east of Spain we got TV interference from Italy,
in the summer. That was in the VHF band, probably channel 3. The band
was later dropped (it required big antenas), and today it is digital anyway.

I could miss Captain Kirk engaging or Piolín (Tweety) seeing a nice
kitty and instead hear/see some commercial in Italian :-(

<https://www.google.com/search?client=firefox-b-e&q=creo+que+veo+un+lindo+gatito#fpstate=ive&vld=cid:aca5e23d,vid:I5DOFAE-SFk,st:0>

aka

<https://www.youtube.com/watch?v=I5DOFAE-SFk>

--
Cheers, Carlos.