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All posts by jb38

Below are all of jb38's postings, with the most recent are at the bottom of the page.


Ray Glen: Re latter mention of weather. Purely for information purposes, according to the Tropospheric ducting maps (AK: William R Hepburn) the Southern left hand side left hand side of UK is presently experiencing atmospheric conditions conducive to causing problems with reception, this only partially clearing away from your area (only) tomorrow before leaving the UK on Friday.

However the bad news is, that its forecast to return with a vengeance late Sunday / Monday at a much higher level, needless to say, triggering reports of problems with reception from far more areas than your own.


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Rowridge (Isle Of Wight, England) transmitter
Wednesday 11 May 2016 12:32AM

TIMOTHY GAUNTLETT : Pleased that you have managed to find the reason for your problem. But though as far as your DVD recorder / player is concerned, if it still works OK then there is no reason to change it, as you can resolve the problem referred to by purchasing a small two-way powered splitter, this device supplying the DVD and TV with identical input levels isolated from each other.


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TIMOTHY GAUNTLETT: Re The two way splitter referred to in my reply. Rather than using the powered version its best to initially try one of those simple low cost non powered "Y" types for the following reason.

Daisy chaining the aerial through "some" devices of the older variety can actually increase the signal level being fed into the TV, and if your DVD recorder comes into this category? the missing PSB channels problem might possibly be caused by the TV's tuner being overloaded for this very reason, as channels do not normally disappear by passing the aerial through DVD recorders etc prior being connected into a TV.

I would be interested to know the model number of the device in question, as some types had a switchable signal boosting facility.


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Aerial group performance | Rigger's zone
Wednesday 11 May 2016 7:06PM

Lou: The post code supplied refers to a location 13 miles from Rowridge, the terrain indicator showing a clear line of site to same, therefore a log periodic aerial should be more than adequate for your requirements.

A log periodic ideal for use in your (new) location can be seen by opening the undermentioned then scrolling down to LOG36, another being the shorter DM18.

Online FM DAB TV Aerial sales



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Ivan marriott: You must obviously reside in an area where the Belmont transmitter can be received as well as Waltham or one of its relay stations, your TV or box having stored channels from the former rather than the latter.

Try carrying out another retune "after" having first of all removed the aerial connector, this action blanking out everything stored in the tuner, reconnecting the aerial on completion followed by carrying out a second retune to load the programmes back into the tuner. A point to note being, if after having carried out the retune your TV / box offers region choice? (not all do) choose East Midlands and not Yorks & Lincs.

By the way, a post code is really required with queries of this nature, as your reception possibilities cannot be accurately assessed without same.


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dave: Having read over everything said, why don't you just leave everything exactly as it is and use the new TV purely as a monitor? in other words, using (as you intended) the scart to HDMI convertor in place of the scart cable and with TV being permanently set on its AUX / HDMI input, no aerial connection into the TV being required as Freeview is still being received via the Freeview box.

Doing things this way would (or should) make life easier for the elderly lady in question, as about the only thing she would have to keep a check on is that the TV is always set on auxiliary input via the remote control.



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TIMOTHY GAUNTLETT: In addition to that said in my previous reply, and although unlikely to apply, but if your DVD recorder / player is indeed one of the older variety? then it might be fitted with an RF modulator similar to that found in older Freeview boxes / VCR's etc, if it does? then make sure that the RF modulators output channel is set above C60 to avoid interference to Freeview reception, as C21 would wipe out reception of Rowridge's PSB3 / BBC B channels, i.e: 101 - 105.


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Marilyn shaw: Assistance can only be offered to queries of this nature if a persons location is known, this preferably being in the form of a post code or one from somewhere nearby, e.g: a shop inc post office, as only then can details of the transmitter covering the area, plus an assessment of the reception possibilities in said area be made.

Regarding the "gadget" you have been sent to place at the back of the set, are you referring to a 4G filter sent by a company called AT800?





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Brian Passingham: Although the EPG number used by "That's Solent" was changed to 7, the multiplex transmitter carrying the programme is exactly the same, and so any variation in strength is more likely down to atmospheric or weather related conditions rather than anything else.

On the subject of signal strength, it has to be appreciated that the LSO transmitter the programme is carried on is only rated at 10Kw (H polarity) compared to that of 200Kw used by the main PSB channels, this power applying to vertical as well as horizontal transmissions , COM 4/5/6 also radiating at 200Kw but only on vertical polarity, 50Kw on horizontal. Taking this into consideration its not terribly unusual for the LSO mux to be received at a lower level, although you might be able to increase the strength by moving your aerial slightly to the right or left of its present position.

However, another factor exists about reception from the LSO mux, insomuch that the signal is beamed out in a fan shape from the mast to cover Portsmouth and parts of Southampton, the centre line of the fan shape being Fareham / Hambleton, and so although you are receiving the LSO mux, the strength / quality its being received at all depends on where you are located within the coverage area.

A post code or one from nearby (e.g: shop inc Post office) enabling access to the reception predictor as well as the terrain indicator. Could you also confirm (or otherwise) that the indoor aerial you refer to is of the loft mounted variety?


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Peter: Not sure who you are addressing your question to, but as far as I can gather Salisbury's FM transmissions are vertically polarised.


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