[mythtv-users] Network tuners vs. USB Tuners

[Barry Martin]

Hi Jim!

> I have a production remote backend with a Hauppauge WinTV-quadHD PCIe card
> tuner.  I'm very pleased with it. I also have a test FE/BE combo built with
> a NUC and it uses a HDHomeRun Connect Quatro.  Both tuners are connected to
> the same attic antenna via a splitter.  I'm so close to the TV broadcast
> towers that I usually get between 90 and 100% signal strength.

I agree with Stephen Worthington’s comments: too much signal is about as 
bad as too little signal and a 2-way splitter might might be sufficient 
– you might need more! At least you should be able to see if the 
drop-outs are lessened. I would suggest rather than leaving the unused 
terminal empty to add a 75-ohm terminating resistor: with analog signals 
and unterminated port caused a ‘ringing’ and I presume the same issue 
with digital signals. 
https://www.amazon.com/outstanding-Terminator-Adapters-Connectors-Satellite/dp/B07V3JBW3L/ 
<https://www.amazon.com/outstanding-Terminator-Adapters-Connectors-Satellite/dp/B07V3JBW3L/> 
(Good Lord! almost $2 each??!!)


You might be better with a proper attenuator: 
https://www.amazon.com/Skywalker-Signature-Signal-Attentuator-16dB/dp/B01MDV701F/ 
<https://www.amazon.com/Skywalker-Signature-Signal-Attentuator-16dB/dp/B01MDV701F/> 
This particular one is 16dB which is probably too much. What I did a 
while back was get a set of 3 db, 6db, 10 db (etc.; I don’t recall where 
I purchased). You can put in series, so a 10dB + 3 dB creates a 13 dB 
attenuator. I also have an old switch box attenuator which would be 
handy for testing other than the contacts have oxidized – need to clean 
some day.  Start with the 3dB (which is about the same as the 2-way 
splitter).


Personally here I found the Hauppauge 1609 (the quad tuner I think 
you’re talking about) ‘reacted’ better that the old 1600 and 2250 I had 
(though two different systems so other variables) to signal 
fluctuations; no experience with a USB quad tuner.

Barry

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.mythtv.org/pipermail/mythtv-users/attachments/20211115/a21743ff/attachment.htm>