his lab is right at the entrance of sandgem town.its a big blue building.
Once you beat the Pokemon league, go to Sandgem town and go into the lab and talk to Professor Rowan.
if you mean the Pokemon professor he is at the cipher lab
Professor Oak's lab is Pallet Town. - Conoogle
First see all the Pokemon in The Sinnoh Dex. Then go to Sandgem Town and talk to Professor Rowan. Professor Oak will come and upgrade your Dex to National Dex.
Diamond
You can get an eevee if you go up to the man who is outside professor rowens lab and talk to him he will then say My friend is ... and he will tell you where to go you talk to the lady and make sure you only have 5 Pokemon in your handthingy she will ask you if you would like the eevee.
In her house, southeast from professor's lab.
she is outside professer rowens lab unless you havent got the national dex
if you already have the national dex you can be able to go to his lab
in sandgem cityin front of the rowans lab which is on Pokemon hospital's left
i think you mean vs.seeker and Dawn/Lucus gives it to you in front of rowens lab and they will also give you the pokeradar
Once you beat the Pokemon league, go to Sandgem town and go into the lab and talk to Professor Rowan.
well i you are a girl them your is bigger of the two houses on the right of twinleaf town if you are a boy then when you are in front of pro rowens lab you go down and dawns house is the bigger house
The PokeRadar is rewarded to you after obtaining the National Pokedex from Professor Oak in the Sandgem Town Lab.
After you finish the game platinum pearl diamond you will go to the town where the Pokemon lab and talk to the professor.
Oak's lab isn't in Pokemon diamond unless it's hidden. But you might be able to use action replay to make it appear. Hope i could help! Sorry the font changed.
you need to finish the sinnoh pokedex then go to professor Rowans lab and professor Oak will give you it