All posts by Lance Spencer
Below are all of Lance Spencer's postings, with the most recent are at the bottom of the page.
Ref: previous posting... I receive from the Hannington transmitter.
As at 11am all MUX2 transmissions seem to be back to normal... I have a 10 element aerial with an amplifier which gives me a signal quality of 2/3 on MUX1 A / C and 1/2 on MUX2 / B. MUX D seems to be the best quality of 4/5; Signal strength is several points higher than the quality... usually about 3 points.
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This cold weather must be the cause of my present poor reception; this morning the MUX 1 channels are only at quality 1 and the MUX 2 and MUX B channels are at 0 (zero) so no reception at all!
MUXs A C and D are at quality 2/3 so mainly watchable.
These numbers are out of a possible 10 on my Panasonic TV set-up menu.
I hope that after DSO the power levels will be such that in a cold spell like this I'll still get quality 2 at the worst... if not the aerial will have to be changed again (and this is with a 10db amplifier in the feeder)!
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What a difference!
When I retuned the set on Wednesday evening the new BBCA mux was 10/10 for strength AND quality.
On the very cold clear nights the BBCA mux reduced by 2 points.. I'll have to keep the amp in circuit for the moment though until the 22nd when the other mux's come on-stream.
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Well, the DSO has now been accomlished but whereas I could receive all the old MUX c & D transmissions without a problem I can now receive all except ARQB (the old MUX D!!).
why is this?
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Latest on my search for the elusive ARQB signal.
This morning I put back my aerial amplifier with its output gooing directly into the TV (Panasonic TX-L24E3B) instead of via anything else and tried manually tuning on channel 47 for ARQB... nothing!! The TV metering shows about 4 for signal strength and ZERO for quality!
I did the same for ARQA on channel 44 without the amplifier and all the appropriate stations were listed with about 2/3 for qualty and about 3 for strength.
As ARQA and ARQB are transmitted at the same power (10kW until 18th April) I just don't understand the problem.
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I've just noticed the post Patrick Midgley re storing of channels; I re-tuned my set using a variable attenuator in the back ot the TV adjusted by looking at the TV metering on the BBCA MUX on channel 39 so that only the stronger signals could be received and not any off the back of the aerial (the 8th Feb re-tune found lots like that relegated to the 800 channel numbers).
I did NOT use it for my search for ARQB!
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Thanks, jb38, I'll have to wait until 18th April... I guess that's because the Hannington COM Muxs are restricted until the London area transmitters change to full power.
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I think that I can see why SDN and ArqA an ArqB are low power from Hannington until 4th/18th April... it's because the adjacent very low power Guldford transmitter has the same 3 channels (41 / 44 / 47) allocated to its MuXs. On 4/18 April they will switch to Ch48 / 46 / 52 respectively.
The Guildford MuXs are SDN / D3&4 /ArqA respectively.
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I've only just seen the other recent posts about the low power channels from Hannington so I apologise for having duplicated information about them.
We now wait in anticipation for 18th April.
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Thursday 2 February 2012 10:18AM
This morning at 7am I cannot receive any of the MUX2 transmissions with MUX1 being at a lower power than usual(maybe some of the other MUXs as well but didn't have time to go through them all).
As a matter of interest I had a problem several weeks ago when I lost ALL signals for a few hours (this happened twice in a week). It turned out to be crows or pigeons sitting on the aerial tilting it down... I've since had the system tightened up!