I have tried the 20-006A it has about the same performance as the RTI Hi Gain. Sounds like you have a coveted low interference residences, which makes you a good candidate for whole home operation with the IRF-6 (gen3) modification, which will only set you back another $15.00. Plus you can still use your 20-006A antenna. Actually I haven’t tried the latest mod with 20-006A antennas yet, Ill have to run down and get one, might just be a better match than the RTI Hi Gain.