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All posts by gtibb

Below are all of gtibb's postings, with the most recent are at the bottom of the page.


Local mux (channel 35) is now on test from Hemel Hempstead at full power (200 watts NW & E lobes only. No coverage toward Watford).

London Live TV is scheduled to launch on Wednesday 27th March 2019.

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StevensOnln1:

Oops! Sorry for the typo. Yes the test is on channel 34.

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LONDON LIVE
Sunday 24 March 2019 5:28PM

Nicholas AndersonNick Anderson:

Rowridge is one of several sites where changes required for 700Mhz clearance have put the two temporary HD muxes "out of band" with the TV antennas fitted in the area.

COM 7 & COM 8 have moved from UHF channels 31/37 to channels 55/56. This is well outside the frequencies the Group A antennas most Rowridge viewers have fitted were designed to receive.

If you have not had your antenna changed recently then you will need a Wideband antenna fitted to receive the channels correctly. Also these muxes are radiated at half the power of the other COM muxes.

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gtibb: Just to confirm, London Live TV was switched on at 9am this morning (27 March 2019) from Hemel Hempstead.

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LONDON LIVE
Wednesday 27 March 2019 2:22PM

London Live TV has now expanded its coverage via the Hemel Hempstead relay. Anyone receiving from this relay in Hemel Hempstead or St.Albans can now retune & will find LL TV on Freeview channel 8. The coverage does NOT extend to Watford, & is at a lower power (200 watts as opposed to 2kW) than the other muxes radiated from this mast.

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Peter Cole:

Its not surprising this has happened at this site. To continue to radiate COM 7 & 8 would have required another panel retrofit at the top of the mast to use panels compliant with UHF 55 & 56. When you consider a very expensive blunder happened previously in 2008 where the top antenna was initially fitted with the panels in the wrong orientation & also a faulty feeder was installed.

Caradon Hill will also close COM7 & 8 in June as an expensive panel replacement excercise would also be required.

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talkSPORT
Wednesday 6 November 2019 6:01PM

Talk sport is seeking agreement from OFCOM to turn off 12 of its AM transmitters.


talkSPORT wants to start turning off AM transmitters



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(46/1955188604)
Wednesday 6 November 2019 6:08PM

Talk sport is asking OFCOM if it can turn off 12 of its AM transmitters. Most of the South West of England, Northern Scotland & parts of Northern Ireland will no longer have AM coverage if this is agreed.


talkSPORT wants to start turning off AM transmitters



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LONDON LIVE
Saturday 14 December 2019 11:35PM

London Live operates at low power (30kW) compared to the other multiplexes from Crystal Palace (200kW) as these services use spare interleaved frequencies that are used elsewhere & must not cause interference.

London Live also broadcasts from Hemel Hempstead at 200 watts, but again due to the frequency allocated the transmissions can only be aimed at Hemel & St. Albans.

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Following a lightning strike that damaged one of the four ATUs (antenna tuning units) on the Gold service (1548 KHz) in the summer of 2020, a reserve antenna is being utilised for this service. The result is that what is usually an end fire array that closely focuses on London, there is now a more Hypercardoid pattern in use creating a lot more signal to the north & west of London. Several attempts have been made to repair the damaged ATU without success. However, with the closest co-channel services on 1548 in Bristol & Liverpool now no longer in use it may be that this situation may become permanent.

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