Originally Posted by Calaveras
I have a TiVo Roamio also. The "Antenna Signal Strength" meter is not a signal strength meter. It is a Signal Quality meter. Actually you have no idea how strong KRON actually is. My guess is that KRON is plenty strong but you have a lot of multipath. Changing Signal Quality when moving the antenna position a bit would tend to confirm this. About all you can do is try the antenna in different positions until you find one that's better.
For whatever reason, the highest Signal Quality I've seen is 72/100. The TiVo meter in the Diagnostic screen is also a Signal Quality meter. Whey they didn't include a real signal strength meter is beyond me. It would really be helpful.
How interesting! For some reason, this sounds so familiar, and I think you may have shared that with me a few years ago on this thread... But obviously if I was informed years ago, I forgot!
The tuner on the Roamio seems to perform differently than my TCL and LG tuners (and I guess the morale to this story is that all tuners are not created equal). As an example, KOFY channel 20 looks fantastic on my TCL tuner, yet it is constantly and predictably pixelated with audio drop outs on my Roamio. Both are connected to the same antenna feed.
I am really hopeful that I can improve the signal quality of KRON with the new longer, larger 30-2476 antenna... I am academically concerned about how close I have to mount my Stellar Labs antenna to my DB4e, but I don't see an alternative to be honest. And I guess I shouldn't worry about the academics of this, and should be more focused on the functional aspects... If it works, it works, right?
I also find trying to tune/aim two antennas on one mast frustratingly difficult... Here is what I ended up doing:
- Took my mast down and layed it on the rooftop
- Mounted Stellar Labs VHF antenna below DB4e (24 inches below) - Didn't worry about the DB4e aim at this point
- Hand mounted mast back in place without tightening any brackets and rotated to get best signal
- Discovered that KRON was not coming in at all. Almost as though I didn't even add the VHF antenna at all.
- Moved mast to another location to clear the treetops. No change.
- Raised/hoisted mast manually by 2-3 feet and rotated around. KRON signal found (but not a good picture)
- Went back to original location at chimney and manually raised by 2-3 feet. Same behavior. KRON found, not a good picture.
- Took mast down and layed on rooftop and moved VHF antenna within a couple of inches from DB4e, some elements on rear of Stellar Labs overlapping with my DB4e. Replaced mast by hand mounting and discovered that I am getting KRON signal. Rotated and discovered that the strongest TiVo signal quality was 42-45 and noted direction.
- Took mast back down and started to adjust the relative direction between my DB4e and my 30-2475... Re-hand-mounted and adjusted to maximize VHF, and then roughly tested UHF channels.
- Rinse and repeat taking the mast up and down. For the most part, I aimed to maximize my VHF KRON signal, and pretty much accepted the fact that I was not going to be able to optimize my UHF aim. My UHF aim was "roughly right" and fortunately it is not a directional antenna, so it worked for me. Not sure what I would have done if I had to optimize two highly directional antennas on the same mast!!!
Long process...which I will have to repeat again when I receive my Stellar Labs 30-2476.
Thanks for taking this "journey" with me... Again, I hope that the 30-2476 makes a difference. Spec-wise, it is supposed to have an increase of 1-2db gain... I am not technical enough to know whether that is a big or an insignificant difference... I will absolutely report back!