Instruction: Generate an answer to the question by utilizing the information contained in the document.

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Question: What would happen if you hooked two of these together? Would you get 1000 mw, stay at 500mw or wreck the second one?
Document: I bought this booster to improve the signal from my D-Link router to the laptop. My main computer is in the basement office and reception around the house upstairs was marginal at best, to be expected with the concrete walls, floor joists, ceiling tiles and flooring that it must traverse. Usually I would get 1 or 2 bars on the signal strength. When I first hooked up this booster, the reception jumped to a full 5 bars. Wow, I thought, what a remarkable product. The next day the signal dropped to 2 to 3 bars at the 100mW setting and seemed to get worse at the 200 and 500 mW settings.
Screw provided antenna into HSB25. Plug in router and HSB2Optional: select switch on HSB2  for mW output, up to 500You are done.I have my router in the basement but get perfect signal two stories up and outside. Prior to installing I would drop signal in certain rooms and outside.My HSB2 has a slight "electrical" hum. No big deal to me because it's in the basement. It is so faint you need to get your ears about 2 feet away to hear.
The replacement came reasonably quickly and it is MUCH quieter but still makes some noise (acceptable if you are not within three feet of it).There are two reasons that I did not give the product 5 stars. First, the noise generated by the first one and, second, the amount of signal boost is a bit disappointing. My receiver is about 50 feet from the antenna and the improvement only got me to three bars (from two). Sufficient for my needs but I would have expected a bit more...
The unit has three power settings to manage the range.I tried the NETGEAR Universal WiFi Range Extender WN2000RPTNETGEAR Universal WiFi Range Extender WN2000RPTand prefer the Hawking for being able to stay connected wirelessly while moving around. The Netgear would be good to provide wifi access to a distant stationary location and provides four ports for additional wired devices as well. The Netgear detects your wifi network and adds "_ext" to the name to create its own network. It can be set up with the same network password, but is a gateway with a different name and IP address, so it is not one larger, seamless wifi network, but two overlapping wifi networks.Our various wireless devices as well as my work laptop (a Dell E6400) are much more stable.
I have used this amplifier in other applications previously and know the quality of the product. It provides variable signal amplification levels of 100mw, 200mw and 500mw. I have used one of these installed in an unheated shop for two years and haven't had a single problem in sending a signal to a high gain outside omnidictional antenna to provide internet service to multiple locations. Previous to buying this Hawking amplifier I bought a cheap "made in China" product that didn't last through installation. Better to pay a little more and get a quality product.
Increased my signal from 20 to 41% on a 500 foot connection thorugh a few trees using a pair of 14 dbi antannas (building to building). This is using wireless mixed b/g modeThe previous power output of linksys router and linksys access point on each side is about 90 mw. Used the 500 mw setting on the signal booster. (the second antanenna on the wireless router is a 7 db ominidirectional antenna and this works well for connections in the house)So far have only used one on the base station --14db directional antenna and it seems to work well.I cannot give the same recomendation for the linksys wireless router and access point, which every once in a while looses the plot and has to be manually reset.
there it is. Then i tried it with my alfa  500 and well the 500 kinda sux where I live and though the amp worked better it still sucked. (I think the output of the alfa 500 is to great for the input of this amp). By the way the alfa 500 was way better then the faulty 1000 initally until I hooked up the amp. I did not dare try the hawking with the GOOD alfa 1000 because the output is to high for the hawking (at least thats what I am being led to believe) so until I get the 1000mW amp I dont wanna risk damage to the hawking trying to hook it up to the GOOD alfa.
As described by many, I immediately saw results, in a two bedroom townhouse, we were not getting good signals on the second floor. This product solved the problem without having to install software, get help or re-configure anything. We now get strong signal everywhere in the town home. Two things that don't make this experience perfect. 1) When I received the product, had to obtain an adapter that will work with our Lynksis router, I feel this should have come already with the product. 2) some described a pitchy noise.
This works extremely well. My signal strength was full bars after installation. But... there's a slightly audible high pitched whine that it emits, which carries throughout my house.Also, I have been reading that at max power (500mW), the radiation levels from the unit can be harmful to your health. But even at 100mW, I still get full bars. If only Hawking can somehow kill the noise, I would have given it 4 stars.
attach the supplied SMA cable to the RPSMA port on the router (white end), the other end (grey end) to the (input) connector of the HSB2.3. You can use on the HSB2 either the enclosed rubber duck 2 dbi antenna to the HSB2 or any detachable RPSMA antenna. I used the Hawking 15 dbi Corner antenna to attach to the HSB2.4. Attach the DC plug to the HSB2 and plug it into an outlet.5. Indicator light will show either 100 mW, 200mW or 500mW.
Answer: The dual antenna configuration would interfere with each other and make matters worse.