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Tech Head - The Technology Section
The Work Bench and Soldering Station
UHF interference
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<blockquote data-quote="Simba27" data-source="post: 167546" data-attributes="member: 182734"><p>But the whole point of the exercise is to get all the devices using RF so I can distribute them around the house easily. I added a bandpass filter, but that made the picture worse, so I took it out again.</p><p></p><p>I think that most of the interference was being introduced by the freeview box and then amplified by the all the modulators in series. Rewiring as suggested above (thanks again) solved that. Actually, it works really well (so I've stopped messing with it for now). My remaining issue (grainy picture on Ch5) is down to signal strength I think. Probably I am losing at little at each connection.</p><p></p><p>I plan to remake the RF cables with some good quality plugs. I useds plugs from B&Q which are so cheap and nasty that the little screw which clamps the centre wire strips its thread as soon as you try to tighten it. Plus, the head of the screw shorts against the body of the plug unless you put tape over it. B&Q charge over a pound for this crap. </p><p></p><p>I'll do what you suggest with regard to the mains suppressor. If better plugs improve the signal strength I'll have another go with the filter.</p></blockquote><p></p>
[QUOTE="Simba27, post: 167546, member: 182734"] But the whole point of the exercise is to get all the devices using RF so I can distribute them around the house easily. I added a bandpass filter, but that made the picture worse, so I took it out again. I think that most of the interference was being introduced by the freeview box and then amplified by the all the modulators in series. Rewiring as suggested above (thanks again) solved that. Actually, it works really well (so I've stopped messing with it for now). My remaining issue (grainy picture on Ch5) is down to signal strength I think. Probably I am losing at little at each connection. I plan to remake the RF cables with some good quality plugs. I useds plugs from B&Q which are so cheap and nasty that the little screw which clamps the centre wire strips its thread as soon as you try to tighten it. Plus, the head of the screw shorts against the body of the plug unless you put tape over it. B&Q charge over a pound for this crap. I'll do what you suggest with regard to the mains suppressor. If better plugs improve the signal strength I'll have another go with the filter. [/QUOTE]
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The Work Bench and Soldering Station
UHF interference
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