All posts by jb38
Below are all of jb38's postings, with the most recent are at the bottom of the page.
Martyn: Well you have good reason to be baffled, as its virtually impossible for what you were moving around to have any affect on the signal level, this making me feel that the second last paragraph in my reply (i.e: out with your control) might well be the case, and with whatever was causing your problem having either corrected itself, or having been corrected.
Just to satisfy my curiosity though, when I had requested that you try a manual signal check on Sandy's Ch27 and you reported back that it was showing 16% strength, could you possibly try that again? as should by any chance you find that it has also come up in strength then that could indicate an intermittent connection problem on your aerial system.
Another thing being, that although you will most likely have already set this to "off", but if your aerial goes through the Humax and then into the TV, check to make sure that you have the "power saving on standby" switched off on the Humax, as that partially kills the aerials RF loop feed to the TV. (this setting under "miscellaneous")
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Martin Raven: And just to confirm that it is the "Freeview boxes" model number that has been requested and not the TV's, as you are obviously only using it as a monitor and so it plays no part in reception.
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Martyn: No problem Martyn! and pleased to have been of assistance, as although I mainly deal with non domestic RF equipments I find faults such as yours on the domestic side of things to be much more interesting.
And by the way, your findings on the Ch27 test not having altered any "is" as you will probably have gathered good news, as that indicates that your Ch53 problem "was" caused by external reasons.
Regarding Freesat, its something I have no hesitation about in recommending it to anyone, as its the only mode with a virtually guaranteed 99.9% level of reception reliability.
Quad block kits for a Sky dish can be obtained for as little as £10.00 from a number of e-bay outlets and are simplicity to fit by then virtually being a push fit onto the end of the arm "if" its a rectangular one, or alternatively if its an older dish with a round arm you loosen the 40mm collar clamp and swap the blocks over, then run another coax cable to the lounge or wherever.
Regards / jb.
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Briantist: Any idea what has happened with the page accessed via the twitter link? as it hasn't been updated for not far off 24 hours now, me having checked this on two different PC's earlier on this evening.
Below being the link used in the browser.
Of course now that I have mentioned this I fully expect Murphy's law to jump in and it start updating again.
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JVO: Multiplex channels are not necessarily all received at the same level and Ch48 is most likely to be sitting at just under the threshold for reception, you can find out what its at by selecting "manual tune" and entering Ch48 but not pressing scan, because in most equipment the strength its being received at will immediately be indicated, if you then enter 51 & 52 the difference will immediately be seen.
You should though change your aerial over to a wideband type as you are somewhat over stretching your group A aerial, a Log 40 type would be an ideal replacement for whatever you are using.
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Des Collier: You will likely have found this out by now anyway, but just in case that you havent the manual for this model does not indicate that its actually fitted with a DVB-T2 tuner but only an SD DVB-T type, meaning that if you try to manually tune in an HD channel it will respond with either a a "no signal" message or if a signal is indicated it will have zero quality.
Is this dongle you are referring to an actual HD tuner as such? because there is nothing that can be downloaded into the set to make it receive HD channels as its a hardware problem.
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Briantist: Re: Twitter link problem. Many thanks for sorting that out and pleased to report that all seems to be OK again now.
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Sarah C: Its not unusual for reception from a low powered multiplex such as Pick TV is presently using to go downhill slightly when the main PSB mux on the station has switched to high powered operation, the reason for this being that the signal from the high powered transmitter has the effect of slightly desensitizing your receivers tuner, this resulting in a signal that's already on the weak side appearing to be even more so.
This will automatically be rectified on the 27th when all six multiplexes are transmitting on the same power, rather than at present where Pick TV is only running at 3kw whereas the BBC is on 20Kw.
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Richard Kernick: Should you still not be able to receive any HD signals after having tried whats been suggested by argyle_mikey, then come back with the model number of the TV or box you are using and this can be checked out.
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Tuesday 12 June 2012 8:22AM
Martyn: Yes, 30% isn't really high enough to resolve a picture although zero quality guarantees that you wont, but as a second test I would like you to try that same manual signal check but this time on Oxfords Ch55 as that transmits on half the power of the BBC, and should it indicate around 50% or so strength with a reasonably high quality, should you by any chance be using any form of booster in-line with the aerial lead try by passing it then try BBC1 again.
If though you are not using any form of booster, then unfortunately that strongly suggests a problem out with your control, and about the only thing you can then do is to confirm this one way or another by making an enquiry with a not too far away neighbour.
By the way, your test on Sandy's Ch27 was about what was expected, as although signals can be picked up on the rear of most aerials at sometimes far higher levels than would be expected, your aerial would be receiving Sandy at not that far off half way towards the aerials (any horizontal aerial) dead spot of 90 degrees from the signal.
Give an update on the Ch55 test though.