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819-line analog television transmission format
CCIR
System E
is an
analog broadcast television
system used in
France
and
Monaco
, associated with
monochrome
819-line
high resolution broadcasts.
[1]
Transmissions started in 1949
[2]
and ended in 1985.
System E specifications
[
edit
]
Some of the important specs are listed below:
[3]
[1]
[2]
System E implementation provided very good (near
HDTV
) picture quality but with an uneconomical use of
bandwidth
. With the usual additions of
sound carrier
and
vestigial sideband
the result was a combined signal that demanded approximately two to three times the bandwidth of more moderately specified standards, even when colour was added to them (as the
color subcarrier
resides within the
Luma
signal space).
For this reason, France gradually abandoned it in favor of the
625-lines
standard, implementing
System L
with
SECAM
color.
The final 819-line transmissions in
Metropolitan France
took place in
Paris
, from the
Eiffel Tower
, on 19 July 1983.
TMC
in Monaco were the last broadcasters to transmit 819-line television, closing down their System E transmitter in 1985.
Television channels
were arranged as follows:
[2]
Ch
|
Picture (MHz)
|
Sound (MHz)
|
F2
|
52.40
|
41.25
|
F4
|
65.55
|
54.40
|
F5
|
164.00
|
175.15
|
F6
|
173.40
|
162.25
|
F7
|
177.15
|
188.30
|
F8
|
186.55
|
175.40
|
F8a
|
185.25
|
174.10
|
F9
|
190.30
|
201.45
|
F10
|
199.70
|
188.55
|
F11
|
203.45
|
214.60
|
F12
|
212.85
|
201.70
|
System F
[
edit
]
CCIR System F
was an adaptation of System E used in
Belgium
(1953,
RTB
) and
Luxembourg
(1955,
Tele Luxembourg
). With only half the vision bandwidth and approximately half the sound carrier offset, it allowed French 819-line programming to squeeze into the 7 MHz VHF broadcast channels used in those neighboring countries, albeit with a substantial loss of horizontal resolution.
[1]
Use of System F was discontinued in Belgium in February 1968, and in Luxembourg in September 1971.
Some of the important specs are listed below:
[1]
See also
[
edit
]
Notes and references
[
edit
]
External links
[
edit
]
|
---|
Television
|
---|
Analog
| 405 lines
| |
---|
525 lines
| |
---|
625 lines
|
- System B
,
C
,
D
,
G
,
H
,
I
,
K
,
L
,
N
- Color systems:
PAL
,
PAL-N
,
PALplus
,
SECAM
- MAC
|
---|
819 lines
| |
---|
1125 lines
| |
---|
1250 lines
| |
---|
Audio
| |
---|
Hidden signals
| |
---|
Historical
| |
---|
|
---|
Digital
| |
---|
|
|
|