I have several channels with 100% strength before I used the preamplifier. But even I used the preamplifier later, they were still working perfectly. So I do not think it was due to overload. Several channels are in the same direction as KTSF with higher NM, and are around 50-90% signal strength. I tried to unplug the preamplifier and just used bare cable, no help for KTSF, but some stations became unstable. Maybe the trees that blocked the LOS is the most important factor. I will try to move my antenna to the other locations and report back later.
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Originally Posted by No static at all
I suspect preamplifier overload. If a pre-amp is truly needed I would only consider the Winegard HDP-269. Make sure the system is well grounded as the 269 is sensitive to nearby lightning strikes.
The 91-XG can pull in stations down to around 0db with no amplification in most instances. This is even possible with 100 feet of coax & no splits. This may require a bit of height tweaking (in 6 inch increments) if the antenna is pointed directly into any obstacles.
Every antenna I have tried at my location requires a rotor even though the desired stations are in the same direction. Any trees, houses or hills in front of an antenna can create a tremendous amount of signal reflections (mutipath). An off axis aim may actually work better under these conditions with affected channels.
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