"Airy R. Bean" wrote in message
...
The turnip-brain of the M3/CB licensee and his sneer?

Your shameful support for the gangrenous degeneration that
is the M3/CB licence seems to have you proposing that because
you find fault, in YOUR opinion, with the technical viewpoint of those
who aspire to be _REAL_ Radio Hams, then that is full
justification for admitting the M3/CB licensees with no technical
viewpoint whatsoever. If that is your argument, then I disagree with you.


gangrenous degeneration, the cb'er etc etc

yawwwwnnnnnnnnnnnnn

I have a theory that you are not a real person but a machine with a
collection of pre-programmed phrases.... rather akin to the Texas
Instruments 'Speak And Spell'.

Judging by the copious numbers of posts by the LID, I think you've struck a
raw nerve somewhere Brian.

Cheers all round!

Judging by the copious numbers of posts by the LID, I think you've struck a
raw nerve somewhere Brian.

Cheers all round!

"F1LBY" phil[AT]kajagoogoo[DOT]co[DOT]uk wrote in message
...
Judging by the copious numbers of posts by the LID, I think you've struck
a
raw nerve somewhere Brian.

Cheers all round!

Oh he always gets like that when he gets out of his depth, as happens quite
often ;-)

73

Brian

"F1LBY" phil[AT]kajagoogoo[DOT]co[DOT]uk wrote in message
...
Judging by the copious numbers of posts by the LID, I think you've struck
a
raw nerve somewhere Brian.

Cheers all round!

Oh he always gets like that when he gets out of his depth, as happens quite
often ;-)

73

Brian

Walt Davidson wrote:

All day tomorrow, for an observer in the London area, the sun will
exactly track the Clarke Belt (which is the orbit that geostationary
satellites are put into).

So you can use the sun - tomorrow only - to adjust the tracking of
your satellite dish.

And not many people know that!



Watch your S/N ratio deteriorate as the noisy sun tracks through your
satellite dish's beamwidth.

A company I used to work for used one of the Eutelsat birds for data
distribution, and twice a year we saw our Es/N drop by 10dB for about
four minutes. It was at 11.20-ish on the 11,12 or 13th October and
again in April. And ,surprisingly, it happened even on cloudy days.
:-)

Chris

Walt Davidson wrote:

All day tomorrow, for an observer in the London area, the sun will
exactly track the Clarke Belt (which is the orbit that geostationary
satellites are put into).

So you can use the sun - tomorrow only - to adjust the tracking of
your satellite dish.

And not many people know that!



Watch your S/N ratio deteriorate as the noisy sun tracks through your
satellite dish's beamwidth.

A company I used to work for used one of the Eutelsat birds for data
distribution, and twice a year we saw our Es/N drop by 10dB for about
four minutes. It was at 11.20-ish on the 11,12 or 13th October and
again in April. And ,surprisingly, it happened even on cloudy days.
:-)

Chris

"Paul Lonsdale" wrote in message
...
In article , Brian Reay
wrote:
some systems rotate the
gyros on a tourbillion like mechanism but these defeat one of the
objects
of a 'strapdown' system).

Ah the good old "Carousel". That was the model of INS that had ovens for
the
rate gyros that ran at 69 degrees F. I think Concorde may be the last
British Airways aircraft to use these, all the rest use IRS with laser
gyros.


I'm not familiar with that particular INS but the technique was (quite)
widely used. My background isn't on the civil a/c side but I'd be very
surprised if many civil a/c were not using a LINS these days- often as not
with a coupled GPS. The big US companies (Litton, Honeywell, etc) saw the
potential and threw $ at the problems. The base cost of a LINS tumbled and
the low maintained cost did the rest. I had a tour of LINS manufacturing
facility back in 1986 and they were already starting to treat LINS systems
as a commodity product (ie built to stock not order)- almost unheard of at
the time.

Prior to this there were some amazing techniques used to make gyros- my
favourite (although I never worked on them) had a solid 'ball bearing' which
was held electrostatically and rotated at high speed. I forget the details
now but, when I learned of it (in the early 80s I would think) it seemed
almost too clever to be true.

The advent of the 'cheap' RLG (ring laser gyro) saw off some interesting
techniques which were replaced by things 'without eye brows' ;-)


--
73
Brian
G8OSN
www.g8osn.org.uk
www.amateurradiotraining.org.uk for FREE training material for the UK
Foundation and Intermediate Licences
www.phoenixradioclub.org.uk - a RADIO club specifically for those wishing
to learn more about amateur radio

"Paul Lonsdale" wrote in message
...
In article , Brian Reay
wrote:
some systems rotate the
gyros on a tourbillion like mechanism but these defeat one of the
objects
of a 'strapdown' system).

Ah the good old "Carousel". That was the model of INS that had ovens for
the
rate gyros that ran at 69 degrees F. I think Concorde may be the last
British Airways aircraft to use these, all the rest use IRS with laser
gyros.


I'm not familiar with that particular INS but the technique was (quite)
widely used. My background isn't on the civil a/c side but I'd be very
surprised if many civil a/c were not using a LINS these days- often as not
with a coupled GPS. The big US companies (Litton, Honeywell, etc) saw the
potential and threw $ at the problems. The base cost of a LINS tumbled and
the low maintained cost did the rest. I had a tour of LINS manufacturing
facility back in 1986 and they were already starting to treat LINS systems
as a commodity product (ie built to stock not order)- almost unheard of at
the time.

Prior to this there were some amazing techniques used to make gyros- my
favourite (although I never worked on them) had a solid 'ball bearing' which
was held electrostatically and rotated at high speed. I forget the details
now but, when I learned of it (in the early 80s I would think) it seemed
almost too clever to be true.

The advent of the 'cheap' RLG (ring laser gyro) saw off some interesting
techniques which were replaced by things 'without eye brows' ;-)


--
73
Brian
G8OSN
www.g8osn.org.uk
www.amateurradiotraining.org.uk for FREE training material for the UK
Foundation and Intermediate Licences
www.phoenixradioclub.org.uk - a RADIO club specifically for those wishing
to learn more about amateur radio

"Paul Lonsdale" wrote in message
...
In article , Walt Davidson
wrote:
When I worked at the Science Museum in the mid 1960s, one of my duties
was to start the Foucault Pendulum at 2 pm on a Sunday afternoon. Its
purpose was to demonstrate and measure the effect of the earth's
rotation on the direction of swing of the pendulum.

Another much loved exhibit that is no longer on show!

Do you mean Walt or the pendulum? ;-)