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Message: <blockquote data-quote="mm1352000" data-source="post: 751666" data-attributes="member: 82144">No problem - thank you for the detailed response. It makes it easier to try to help. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile    :)" loading="lazy" data-shortname=":)" />That was certainly my first impression, yes.That is interesting - I'm not really familiar with cable, but generally tuners are rated for the signal levels and SNRs that they are able to cope with. I can't find those ratings for the 2250...Fair enough, but as I tried to explain earlier in the thread, it is not fair to compare between different kinds of devices as they have different sensitivities (resulting from the differences in chipsets used, circuit designs, electrical environments...).Signal levels and quality will not be uniform (constant) over the entire frequency range. 103.25 MHz is very close to the frequency of the PCIe bus in some computers. That might have an effect. It would be interesting to know what the frequency was before...That is something that I can't explain...I'm not sure. When I went looking for the 2250 specs just a moment ago I remembered something that I feel *reeeeaally* stupid for not remembering earlier. Hauppauge have a dedicated signal level/quality checking tool. You can download it from <a href="http://www.hauppauge.com/site/support/support_hvr2250.html" target="_blank">here</a> (accessories tab, first download). What does that report?That is the exact nature of interference. Tuner/demodulators are meant to be smart - they usually auto-acquire the best possible signal within a certain "window" of frequency. Interference can sometimes trick the tuner into picking the wrong optimum position within that window...Absolutely!As explained above: the "smarts" for auto-acquisition can be tricked in a noisy environment. I definitely agree that increased signal strength could help, although it could also serve to boost the interference -> make things no better or worse. You'd have to try it to find out. The other thing would be to know if TV Server is passing the right frequency in the first place (I'm thinking of the QAM standards). Have you heard back from your cable company?Both of those would be good things to try.I'd recommend that you hold off on that for the moment until you've tried the Hauppauge software and the splitter removal. My direct answer to the question would be this: I have owned a couple of tuners that use the same families of chips (NXP/Philips SAA716x, TDA8275A) and they really need good signal. I have a setup like this:Aerial --(7.5m)-->Kingray 15dB amplifier-->8 sat input + 1 aerial input EMP-Centauri multiswitchDish (3 twin output LNBs)---(7.5m)---------->From the multiswitch:1. To main TV STB (~1m flylead).2. To main TV VCR for recording (I know - old school <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite8" alt=":D" title="Big Grin    :D" loading="lazy" data-shortname=":D" />).3. To secondary TV via 15m under floor.4 + 5. To HTPC via 10 m under floor.6, 7, 8. (Terminated unused.)The HTPC outs go:1. To sat tuner. This tuner is not very sensitive.2. To passive 4 way splitter.The four way splitter outs go:1. To DVB-T/analog dual hybrid input on Pinnacle 7010ix number 1.2. To DVB-T/analog dual hybrid input on Pinnacle 7010ix number 2.3. To sat tuner - currently chopped and changed as I'm doing some hardware testing.4. Terminated.All cabling is RG6. The Pinnacle tuners have internal splits just like your 2250. They also use the same family of chips (SAA7162, TDA8275A). If I take the 15dB amp out then I have problems just like what you describe...</blockquote>

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