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Yes you can Test the ANT-5006 and ANT-5011 with a combiner.
However the 2 antennas when connected together will have out of phase antenna cross talk that will most likely make reception worse with no way to adjust them to make reception better.
Also the power supply and amplifier situation of the 2 antennas will most likely cause problems.
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The Canada Digital Broadcast Tv Stations/Channels are Strong Signal Strength and Easy to receive.
The USA Digital Broadcast Tv Stations/Channels are Weak Signal Strength and Not Easy to receive.
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If you can install a antenna Above the Roof in such a manner that reception of the USA Tv stations are not , obstructed , impeded , blocked , by the , roof and building in the direction of , South East , North East , West.
Test reception of the USA Tv stations.
WNLO-DT , Real UHF channel 32 , CW.
WNED-DT , Real UHF channel 43 , PBS Networks.
WUTV-DT , Real UHF channel 14 , FOX.
Test reception with the , ANT-5006 and ANT-5011 , connected one at a time.
Aim the antenna at about 117 degree magnetic compass direction.
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Here is how to aim antennas.
http://www.kyes.com/antenna/pointing/pointing.html.
Use a Real and Actual magnetic compass to aim antenna , do not trust a , cell phone , tablet and etc. compass.
Most Digital Tv's have a Signal Strength Meter and some Digital Tv's also have a Signal Quality Meter.
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As a Test of reception.
A bigger antenna for better reception of the USA Tv stations is the.
Antennas Direct , DB8e , UHF channels 14 thru 51 antenna.
Install the DB8e antenna Above the Roof in such a manner that the roof and building are not , obstructing , impeding , blocking , reception in the directions of , South East , North East , West.
Aim the DB8e antenna at about 117 degree magnetic compass direction.
Can Test reception without and with a , Winegard , LNA-100 Boost antenna amplifier.
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Here are some above the roof antenna mounts.
http://www.ronard.com/909911.html. Install the , ronard(911) , 5 foot tripod antenna mount.
http://www.ronard.com/712.html. Install the , ronard(712-50-10) , 10 foot tripod antenna mount.
http://www.ronard.com/ychim.html. Measure around the chimney and use a , ronard(2212) , ronard(2218) , ronard(2224) .
http://www.ronard.com.
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Here are some places to buy antennas and etc.
http://www.saveandreplay.com.
http://www.trentondistributors.com.
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The following information is Important.
As always , trees and tree leaves , plants and plant leaves , have a Negative Effect on Broadcast Tv Reception and so do buildings and other obstructions including your apartment building.
Some and not all Negative Effects are.
Absorbing and Blocking Reception.
Multi-Path Reflecting Tv Signals Bouncing All Around.
The Best Practice for Reliable Reception is to install a antenna at a location that has the least amount to no amount of obstructions of any type or kind in the directions of reception.