電でん話わリクエスト

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Meanings

1

noun

phone-in request

Used when a listener or viewer calls a radio or TV station to request a song, topic, or similar.

話tale, talk

リクエスト
A general request, not necessarily by phone. 電話リクエスト specifies the method.
電でん話わ
A telephone or phone call. 電話リクエスト is a compound noun for a specific type of call.

Compound of 電話 (telephone) and リクエスト (request), a straightforward modern loanword blend.