Does a bigger radio room translate into higher chances for a rare or legendary dweller?

Okay, first things first: can you actually get a rare/legendary dweller from the radio room?
First I built a 2-wide radio room with high-charisma dwellers working it and average dwellers were arriving nicely enough, okay. But, if I want rare/legendary dwellers, can I expect them to show up from broadcasting?
If I build a bigger radio room, will that attract rare dwellers? (I don't really see the point in manning a larger room if all it does is tweak the timer... am I wrong?)
Best Answer
From the Bethesda Blog, developers confirm that Legendary Dwellers only comes from Lunchboxes :(
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Can radio station attract legendary dwellers?
I can confirm that you may attract unique dwellers on the radio as I got Butch just yesterday.How do you attract a legendary dweller in fallout shelter?
Legendary Dwellers can be obtained via Cards found in Lunchboxes you unlock. These Dwellers will start at a high level and have 40 SPECIAL stat points distributed between all of their stats. Legendary Dwellers come equipped with an Outfit and/or a Weapon, which you can also equip onto other Dwellers within your Vault.How do you get rare and legendary dwellers in fallout shelter?
Legendary dwellers are found randomly through opening lunchboxes. Rare dwellers have a total sum of 29 SPECIAL points, with the exception of 3 preset dwellers. Legendary dwellers have a total sum of 40 SPECIAL points. Rare and legendary dwellers are not unique.How big can the radio room get in fallout shelter?
The Radio Studio room requires you have 20 Dwellers in your Vault before it can be unlocked....Radio Studio.Room NameRadio StudioRoom SPECIALCharisma3 more rows•Jun 14, 2015Fallout Shelter Legendary Baby Guide: Vault Log #11
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Answer 2
The community is fairly sure you can only get legendary dwellers from lunchboxes, but I couldn't find anything concrete, but it's extremely hard to definitely prove a negative.
Rare dwellers can come from a radio room, but the only thing a larger room contributes bringing dwellers in faster. Upgrading the room doesn't directly increase the chance of rare dwellers showing up.
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