We argue that in case of a nuclear conflict, a normal house, home or residence, (probably) in a safer location or place is safe, but that a bunker (attached to a house, home or residence) in a less safe location is UNSAFE or much less safe.
One of the reasons is that surviving after the first impact (blast) of a nuclear impact, accident or conflict will present much more challenges, than surviving the first hours or days of that (first) impact, accident or conflict.
In the case of a nuclear impact, probably the best for the (your) government to do, would be moving residents away from a region that is impacted (that probably is the most plausible reason they recommend a radio), to a place that guarantees better your survival.
If one impact occurred other impacts are more probable and could follow, possibly for years.
The doubt is if there are such other safer places and if the government etc is able to do this in a safe and orderly manner.
a lot of protection material and logistics would be needed.
Another reason certain parties recommend a radio, could be to inform you (by radio) that it is safe to come out (difficult for them to know when or if it will be safe), or to somehow inform you that your best option is to conscript you in the army and to leave your young children in some care refuge.
i (we) say this, because it is most probably not safe to stay in and also not safe to stay out of your bunker and house (even so with more impacts in the region and on later moments (in time).
Unless it was a one time accident (very low probability for this), no one can guarantee you that you and your family or peers will be safe and will be able to sustain (also probable nuclear winter).
Science also tells us that there will be fallout and even delayed (weeks, months, years … please see article) fallout, and of course multiple other impacts can be expected (decreased or depletes ozone layer causing additional radiation).
From the moment on you retire to your bunker or refuge, your house and your bunker will be a target for the “enemy” and crime (Think about what happened after other much less impacting disasters like regional floods).
The “use” of and commercial bunkers and refuges are designed for (hope to cope with) the unrealistic case of one impact, accident, and even the good result of that design is never proven and cannot be guaranteed.
if there would be an impact that affects your region, most probably your whole country will be affected to some point or degree, and the moving of residents (for their survival, also of eventual nuclear winter) most probably will be no option at all in this case (impact on national level), and possibly or probably impossible.
As an example, you are safer (possibly totally safe), even in the long term of years, in a beach house with a pool in a place that has no upwind targets and especially so if that is located in a region that will not be affected by direct impact nor by nuclear winter (most probably a nuclear winter occur. please see article) (that will be in the southern hemisphere in a “Hadley Cell” region (0-30 south).
This is where we are talking about in this page and site.
all other regions (of the world) are prone to multiple impacts and or the consequential nuclear winter.
The same (as above) is the case for a public bunker or refuge.
Adding or attaching a bunker to your house (lot) or heading for a refuge exposes you to a number (whole range) certain new risks (you are not well trained nor prepared for):
1) not getting into it, and getting it properly sealed in time at the moment of impact (wiring off)(asleep and without proper alarm).
getting into it in time, but or and it not being prepared for the demand or requirements (time).
2) the entry getting blocked.
3) toxic (and radioactive which means a deadly combination if not removed in time) smoke (moves down and or up depending on the component) slowly pouring into your bunker or refuge.
4) infections.