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Terrestrial Broadcasting
Terrestrial Television, Digital and Analogue
Switch Mode Power Supply Woes - New Aerial/Mast head amplifier.
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<blockquote data-quote="RustySpoons" data-source="post: 1057709" data-attributes="member: 412012"><p>I decided to fit a new Log Periodic (My favourite aerial)</p><p>At the same time I fitted a Antiference 4 way mast amplifier so I can supply the signal to other rooms.</p><p></p><p>Testing just the Aerial on it's own I had excellent signal level/quality.</p><p></p><p>Then I connected up the 12v power supply inline, now Antiference have changed the design of their power supply, they used to come with a linear PSU (PF1)</p><p>they are now including a Switch Mode PSU (PS12F) which is a tiny little thing and also does not have the ability to wall mount.</p><p></p><p>As soon as I plugged this in, my signal was fluctuating, if I moved it I'd drop signal completely. If I turned on a HDMI device the signal would drop.</p><p>If I put this power supply anywhere near the TV it would cause interference.</p><p></p><p>I stripped it down and it's absolutely crap inside, cheap capacitors and no shielding what so ever! I was expecting to see a dry joint on the F connectors or something.</p><p></p><p>I went outside and removed the Antiference mast head amplifier, went back inside and looped the PSU through (with a modified tap to stop the DC voltage) and the picture was fine as it was with just the Aerial connected to the TV, then I plugged the PSU back in to the mains and the problem started again.</p><p></p><p>So just replaced it this morning with a Wolsey 4 Way Mast Amplifier which came with a Liner Power supply, signal is better than ever and no issues what so ever.</p><p>I used WF100 throughout and Cabelcon compression F's, was a frustrating process as I really did not want to do that cable run again!</p><p></p><p>Avoid this! I think they are supplying these now due to stupid energy efficiency ratings and all that EuP nonsense. Not like a Linear 100ma PSU costs anything to run!</p><p>[ATTACH=full]119490[/ATTACH]</p></blockquote><p></p>
[QUOTE="RustySpoons, post: 1057709, member: 412012"] I decided to fit a new Log Periodic (My favourite aerial) At the same time I fitted a Antiference 4 way mast amplifier so I can supply the signal to other rooms. Testing just the Aerial on it's own I had excellent signal level/quality. Then I connected up the 12v power supply inline, now Antiference have changed the design of their power supply, they used to come with a linear PSU (PF1) they are now including a Switch Mode PSU (PS12F) which is a tiny little thing and also does not have the ability to wall mount. As soon as I plugged this in, my signal was fluctuating, if I moved it I'd drop signal completely. If I turned on a HDMI device the signal would drop. If I put this power supply anywhere near the TV it would cause interference. I stripped it down and it's absolutely crap inside, cheap capacitors and no shielding what so ever! I was expecting to see a dry joint on the F connectors or something. I went outside and removed the Antiference mast head amplifier, went back inside and looped the PSU through (with a modified tap to stop the DC voltage) and the picture was fine as it was with just the Aerial connected to the TV, then I plugged the PSU back in to the mains and the problem started again. So just replaced it this morning with a Wolsey 4 Way Mast Amplifier which came with a Liner Power supply, signal is better than ever and no issues what so ever. I used WF100 throughout and Cabelcon compression F's, was a frustrating process as I really did not want to do that cable run again! Avoid this! I think they are supplying these now due to stupid energy efficiency ratings and all that EuP nonsense. Not like a Linear 100ma PSU costs anything to run! [ATTACH=full]119490[/ATTACH] [/QUOTE]
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Terrestrial Broadcasting
Terrestrial Television, Digital and Analogue
Switch Mode Power Supply Woes - New Aerial/Mast head amplifier.
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