R5SHPN‏-low power indoos

I have used two R5SHPN in RB433UAH.When I test them indoors,the power is much lower than R52HN in the same environment;Can anyone tell me the reasons or settings that makes power higher?Thanks a lot.

Read about SWR (assuming you have config all perfectly, as you assume)
http://en.wikipedia.org/wiki/Standing_wave_ratio

R5SHPN indoor?
Do not put your head in the microwave owen