How do you say "geek" or "nerd" with an affectionate feel in Russian?

[Alex]

> Dear List members,
>
> Please excuse this not very serious query in the midst of recent events.
>
> One of my students has asked me the following question:
>
> How do you say "geek" or "nerd" with an affectionate feel in Russian?  He
> says that at MIT, "nerd" is a badge of honor for students, not an insult.
> For example, how would you translate these statements:  "My husband is a
> real computer geek.  He's always dreaming up some new program."  OR  "My
> son is a real space nerd.  He reads up on every rocket launch that is done
> anywhere in the world."  Any approximations are appreciated.
>
> Thank you in advance.

фанатик? одержимый? У меня встречный вопрос - как передать
американцу или англичанину значение выражения "подрывная радиостанция"?

заранее спасибо

Дядя Саша   (а космическими полетами мы с братом увлекаемся с детства :)

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