RadioBanter - Radio Australia very strong on 21740 today

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In article ,
uncle arnie wrote:
On Sat, 28 Aug 2004 04:09 pm -0600 UTC, Telamon
posted: %MM

Radio Australia coming in S10 on 21740 today at 22:10 UTC. Good
listening everyone.

I'm getting very good signals on 6020 and 9580 at 1200 to 1400 or so UTC for
the past week These are different broadcasts.

They usually aren't, but the damn games will quit soon.

6020 switches to 5995 at 14:00 and seems to be good to 15:30-16:00
these days, here (Seattle). (Weekdays: PM. Sundays: The Science Show
followed by The National Interest, good stuff, usually).

Mark Zenier Washington State resident

In article ,
uncle arnie wrote:

On Sat, 28 Aug 2004 09:27 pm -0600 UTC, Telamon
posted: %MM

In article ,
uncle arnie wrote:

On Sat, 28 Aug 2004 04:09 pm -0600 UTC, Telamon
posted: %MM

Radio Australia coming in S10 on 21740 today at 22:10 UTC. Good
listening everyone.

I'm getting very good signals on 6020 and 9580 at 1200 to 1400 or so UTC
for
the past week These are different broadcasts.

I almost never listen to them on 6020.

I usually listen to them on:

21740
17795
15515
13630
9580

The other frequencies usually do not do as well.

I'm listening to them on 15515 right now.

So far today I have listened to Japan, radio Netherlands and Australia.
I will be listening to BBC and New Zealand soon.

I get the BBC very well every local evening here until 0500 UTC on 5975 then
6005 (signal for Africa). RN is from Sackville until I think 0530 and very
loud. I used to listen to NZ, is there some good programming these days?
I sometimes pick up CRI (China) as well. I found Japan a novelty like NZ (a
little folksy). But Australia is my morning show (their evening).

I've often wondered why different freq for different people and more and
more I think its nature of equipment as the main issue, when the listeners
are on the same continent.

BBC on 5975 is very good here also in addition they have strong signals
on various frequencies evenings on the 31 and 25 meters bands for me at
least on the west coast.

I can't think of any particular programs right now on NZ that I like
other than the news. Usually my time listening to them is either news or
commentary on the world news. Then there is the pacific regional news
coverage that seems to me at better than what you would get from
Australia. Australia seems to have plenty to talk about concerning
itself.

Well, a lot of people appear to depend on non resonant antennas and so
what comes in well for them could in fact be a direct result of their
antenna system. If you use a resonant antenna then the expected behavior
is of course known.

--
Telamon
Ventura, California

Dave Holford wrote:

WWV on 15MHz is currently S5, S7, S2 and S9 on four receivers here.
CHU on 3330kHz is currently S9+10dB, S1, S7, S4 on the same four
receivers.
All receivers are similar performance in terms of sensitivy and
bandwidth, but the HF antennas are all different.

So as a measure of signal strength, antenna and receiver performance S
units are largely irellevant. They are only useful as a measure of
relative strength of different signals on a specific antenna/receiver
combination.

We're lucky speedometers aren't designed with the same philosophy.

mike

m II wrote:

Dave Holford wrote:

WWV on 15MHz is currently S5, S7, S2 and S9 on four receivers here.
CHU on 3330kHz is currently S9+10dB, S1, S7, S4 on the same four
receivers.
All receivers are similar performance in terms of sensitivy and
bandwidth, but the HF antennas are all different.

So as a measure of signal strength, antenna and receiver performance S
units are largely irellevant. They are only useful as a measure of
relative strength of different signals on a specific antenna/receiver
combination.

We're lucky speedometers aren't designed with the same philosophy.

mike

BION- I have a 1994 Ford factory service manual which says they
intentionally made the speedometers read a little high, apparently to
encourage drivers not to speed. When the speedometer reads '65', the car
is going about '62'. However it also makes the gas mileage look better
too because the odometer shows more miles driven for the amount of gas
used. I suspect that's the real reason they did it.
I confirmed the speedometer error by installing the next larger size
tires than the OEM ones. It made my speedometer very accurate, less than
1/10-mile error in 40-miles, compared to about 1/2-mile with the factory
tires. I measured the mileage on an Interstate highway which had newly
installed mileage markers.

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That's a good guess, but ...

S7 on its own means 7 'S' Units in strength, not "Moderately Strong"
as per standard RST.

as for strength, that'd be 12 dB less than s9 which has been set to
represent a signal at 50 µV. 10 dB over s9 would represent 500 µV.
An s7 would be 16 times less than 50 µV, about 3.125 µV.

It's classic CB ignorance and miseduation that leads to the use of
such measures as s10 or s20 :) :) :)... and such reports have been
being heard more and more outside the CB service in recent years since
the FCC has dumbed down the requirements for amateur radio licenses to
just about nothing: just memorize a question pool.

On Sun, 29 Aug 2004 12:11:57 -0400, Dave Holford
wrote:

Once upon a time S units had a specific meaning as part of the RST
system.

S1 Barely perceptible
S2 Very weak
S3 Weak
S4 Fair
S5 Fair to good
S6 Good
S7 Moderately strong
S8 Strong
S9 Extremely strong.

But meter readings, with the exception of a few professional receivers,
have no real meaning other than one signal is stronger than the other.

Some receivers have "Scotch" S meters which read lower than people would
like ; but most modern consumer equipment has sensitive meters which
show even weak signals as the upper end of the scale and thus make the
receiver performance look better.

Then, of course you need higher numbers because even a fair signal is
S9. Solution? add more numbers - usually as dB above S9.

The other problem is that meter deflection is also affected by antenna
gain or loss. Hook up a long wire and that S2 becomes S8 - along with a
lot more noise.

The end result is that while an S meter may show the relative signal
strength on a specific receiver with a specific antenna, they have no
relevance to the readings on a different receiver and/or antenna or to
the true strength of the signal. Which is easily demonstrated:

WWV on 15MHz is currently S5, S7, S2 and S9 on four receivers here.
CHU on 3330kHz is currently S9+10dB, S1, S7, S4 on the same four
receivers.
All receivers are similar performance in terms of sensitivy and
bandwidth, but the HF antennas are all different.

So as a measure of signal strength, antenna and receiver performance S
units are largely irellevant. They are only useful as a measure of
relative strength of different signals on a specific antenna/receiver
combination.

Dave

= = = longwave wrote in message
= = = ...

Dan wrote:

On Sat, 28 Aug 2004 22:23:25 GMT, JuLiE Dxer
wrote:

I'm not sure what "s10" is suppose to mean but, yes, R.Australia has
a decent signal here in '7' land. Oddly enough, it's peaking at about
's7',

So, you don't know what "s10" is, but you *do* know what "s7" is. Are
you *really* this stupid?

Dan

Your comments really don't deserve a reply, but for the rest of the
group-

Most S-meters give a relative measurement of signal strength. An S-9 on
one receiver might be higher or lower on another model. Few receivers
are calibrated for an accurate measurement of signal strength, such as
micro-volts (uv) or milli-volts (mv).

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LongWave,

As you have so correctly stated, most S-Meters simply offer a "Visual"
indication of 'relative' Signal Strength for the radio user.

Most S-Meters are 'marketed' as an "Added Value" Tuning Aid. Beyond
that most radio manufactures could care less what they read or measure.

One of the worst examples is the Grundig Satellit 800 M and the
Peg-the-Needle S-Meter readings on the FM Radio Band.

jm2cw ~ RHF

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