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High Capacity
High Capacity
High capacity radio links
High capacity radio links
300-1800 audio/data channels
300-1800 audio/data channels
or high-definition video.
or high-definition video.
High capacity microwave radio relay links are completely different to low and medium capacity equipment.
High capacity microwave radio relay links are completely different to low and medium capacity equipment.
Until the advent of fibre optic cable, this microwave link technology provided the GPO/BT nationwide network backbone for the public telephone system, television and video data from RAF air defence radar stations.
Until the advent of fibre optic cable, this microwave link technology provided the GPO/BT nationwide network backbone for the public telephone system, television and video data from RAF air defence radar stations.
Pye Telecom produced microwave radio relay equipment in the 6GHz, 7GHz and 11GHz bands and sold millions of pounds of such systems.
Pye Telecom produced microwave radio relay equipment in the 6GHz, 7GHz and 11GHz bands and sold millions of pounds of such systems.
Some examples are given in the next screens.
Some examples are given in the next screens.
GPO 6GHz TV microwave radio relay link
GPO 6GHz TV microwave radio relay link
1955
1955
GPO 6GHz TV microwave radio relay link
GPO 6GHz TV microwave radio relay link
A 6GHz microwave link designed by the GPO and developed for production and manufactured by Pye Telecom.
A 6GHz microwave link designed by the GPO and developed for production and manufactured by Pye Telecom.
This work led to the establishment of the Pye Telecom Microwave design laboratory at Quy Mill, Cambridge.
This work led to the establishment of the Pye Telecom Microwave design laboratory at Quy Mill, Cambridge.
C.O. Stanley recognised the need for radio links to carry the TV video and audio signals from the studios to the regional transmitting sites.
C.O. Stanley recognised the need for radio links to carry the TV video and audio signals from the studios to the regional transmitting sites.
Involvement with this design enabled Pye to develop these frequency bands where there was less competition from GEC and STC.
Involvement with this design enabled Pye to develop these frequency bands where there was less competition from GEC and STC.
Pye M1000A
Pye M1000A
1956
1956
Pye M1000A 6GHz portable TV microwave radio relay link for the relay of monochrome television video and sound signals
Pye M1000A 6GHz portable TV microwave radio relay link for the relay of monochrome television video and sound signals
This 6-7GHz portable microwave link equipment was designed by Raytheon USA and manufactured under licence by Pye Telecom.
This 6-7GHz portable microwave link equipment was designed by Raytheon USA and manufactured under licence by Pye Telecom.
The portable version of the M1000 equipment was used for TV outside broadcasts and temporary point-to-point links.
The portable version of the M1000 equipment was used for TV outside broadcasts and temporary point-to-point links.
The equipment was suitable for carrying television video signals plus one sound channel.
The equipment was suitable for carrying television video signals plus one sound channel.
The transmitter RF output was 1-Watt.
The transmitter RF output was 1-Watt.
Pye M1000
Pye M1000
1960
1960
Pye M1000 6GHz fixed station TV microwave radio relay link for the relay of monochrome television video and sound signals
Pye M1000 6GHz fixed station TV microwave radio relay link for the relay of monochrome television video and sound signals
This fixed version of the M1000 microwave link equipment was manufactured under licence by Pye Telecom.
This fixed version of the M1000 microwave link equipment was manufactured under licence by Pye Telecom.
This equipment was used to carry the video and sound signals from the ATV London studios via a 4-hop route to Birmingham for the first UK independent television service.
This equipment was used to carry the video and sound signals from the ATV London studios via a 4-hop route to Birmingham for the first UK independent television service.
The transmitter RF output was 1-Watt and aerials were 2, 4, or 6-foot parabolic dishes.
The transmitter RF output was 1-Watt and aerials were 2, 4, or 6-foot parabolic dishes.
Pye M710
Pye M710
1963
1963
Pye M710 6GHz fixed microwave link for monochrome TV signals was the first Pye own-design high capacity valve technology link.
Pye M710 6GHz fixed microwave link for monochrome TV signals was the first Pye own-design high capacity valve technology link.
M710TV was suitable for carrying one TV video signal with its associated sound channel.
M710TV was suitable for carrying one TV video signal with its associated sound channel.
M710MU could carry up to 6 high quality music channels.
M710MU could carry up to 6 high quality music channels.
M710TP could carry up to 960 telephone channels.
M710TP could carry up to 960 telephone channels.
A transistorised supervisory panel provided a continuity pilot signal and monitoring of TX output power and automatic change-over in duplicated systems.
A transistorised supervisory panel provided a continuity pilot signal and monitoring of TX output power and automatic change-over in duplicated systems.
M710 Transportable
M710 Transportable
1964
1964
M710 Transportable
M710 Transportable
Pye M710 GPO Transportable was an equipment variant of the M710, mounted in fibreglass cabinets for temporary use in the main UK microwave network.
Pye M710 GPO Transportable was an equipment variant of the M710, mounted in fibreglass cabinets for temporary use in the main UK microwave network.
M710 Transportable was suitable for carrying one television video signal to 405, 525, or 625-line TV standards with its associated sound channel.
M710 Transportable was suitable for carrying one television video signal to 405, 525, or 625-line TV standards with its associated sound channel.
M711
M711
1968
1968
M711
M711
The first Pye Telecom own-design all solid- state high-capacity trunk microwave link, designed to carry up to one video signal or 300 telephone channels.
The first Pye Telecom own-design all solid- state high-capacity trunk microwave link, designed to carry up to one video signal or 300 telephone channels.
It operated in the upper 6 GHz frequency band.
It operated in the upper 6 GHz frequency band.
The all solid-state RF output was 300-mW and for higher power outputs a travelling-wave tube amplifier was fitted which gave 5 or 10-Watts RF output.
The all solid-state RF output was 300-mW and for higher power outputs a travelling-wave tube amplifier was fitted which gave 5 or 10-Watts RF output.
Part of the supervisory and monitoring system designed for the earlier M710 was also utilised.
Part of the supervisory and monitoring system designed for the earlier M710 was also utilised.
M717/M718
M717/M718
1971
1971
M717/M718 was a high capacity, solid-state, 6-7 GHz microwave link which could carry a colour TV signal plus sound channel or 960 telephone circuits.
M717/M718 was a high capacity, solid-state, 6-7 GHz microwave link which could carry a colour TV signal plus sound channel or 960 telephone circuits.
A new design 6+2 supervisory and monitoring system was supplied.
A new design 6+2 supervisory and monitoring system was supplied.
Type M717 was available with 5, 10, or 20-Watt RF output travelling-wave tube amplifiers in the transmitter. Type M718 gave a solid-state RF output power of 300-mW.
Type M717 was available with 5, 10, or 20-Watt RF output travelling-wave tube amplifiers in the transmitter. Type M718 gave a solid-state RF output power of 300-mW.
The launch customer was the GPO. It was used to expand the television capacity of the London to Birmingham microwave route for BBC2.
The launch customer was the GPO. It was used to expand the television capacity of the London to Birmingham microwave route for BBC2.
M1117 11 GHz broadband microwave link
M1117 11 GHz broadband microwave link
1973
1973
M1117
M1117
The M1117 11 GHz broadband microwave link was a logical development from the 7 GHz M717 and M718 equipment.
The M1117 11 GHz broadband microwave link was a logical development from the 7 GHz M717 and M718 equipment.
This equipment was used in the UK GPO microwave network in areas where the 2, 4, 6 and 7 GHz frequency spectrum was full.
This equipment was used in the UK GPO microwave network in areas where the 2, 4, 6 and 7 GHz frequency spectrum was full.
While the 11 GHz microwave transmitter and receiver assemblies were all new designs, the same M717/M718 70 MHz transmitter modulator and high-level IF amplifier were used along with the receiver pre-IF amplifier, main IF amplifier, demodulator, group delay equaliser and baseband amplifiers.
While the 11 GHz microwave transmitter and receiver assemblies were all new designs, the same M717/M718 70 MHz transmitter modulator and high-level IF amplifier were used along with the receiver pre-IF amplifier, main IF amplifier, demodulator, group delay equaliser and baseband amplifiers.
GPO 20MHz spacing 6 and 7 GHz link
GPO 20MHz spacing 6 and 7 GHz link
1975
1975
GPO 20MHz spacing 6 and 7 GHz link
GPO 20MHz spacing 6 and 7 GHz link
The objective of the GPO 20 MHz spacing project was to create a special version of the M717/M718 microwave link which could carry the same bandwidth traffic as before, but occupy half the frequency spectrum space.
The objective of the GPO 20 MHz spacing project was to create a special version of the M717/M718 microwave link which could carry the same bandwidth traffic as before, but occupy half the frequency spectrum space.
The application was to carry defence radar traffic in areas of the country where the 2, 4, 6 and 7 GHz microwave frequency spectrum was full.
The application was to carry defence radar traffic in areas of the country where the 2, 4, 6 and 7 GHz microwave frequency spectrum was full.
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