The form to do this is here:
https://www.serafe.ch/uploads/media/...Opting-out.pdf
Google translation of the conditions (mentions upto 5,000chf fine for falsely opting out, so go ahead be my guest...):
Information on private households without reception
Article 109c RTVG private households without reception facilities
1 All members of a household in which there is no device suitable for receiving radio or television programs be available or operated, shall be exempted from the levy for a period of
2 The Federal Council regulates which equipment categories are deemed suitable for reception.
3 OFCOM may enter the premises of a household exempted under paragraph
1 in order to verify that the Conditions for the exemption are given.
4 Anyone exempted from the levy in accordance with paragraph 1 and, before the expiry of the period of discharge in the household, a device suitable for reception provides or puts into operation, this must be reported in advance to the collection agency.
5 A fine of up to CHF 5'000.00 shall be imposed on anyone who is a member of a household exempted from the levy in accordance with paragraph 1 and in which a ready-to-receive device is ready or operated, without prior to the collection agency in accordance with paragraph 4 before to have reported.
Art. 94 RTVA Request for exemption from the duty to pay
1 An application for exemption from the levy may be made at any time upon receipt of the invoice in writing to the collection agency
become.
2 Any person listed on the tax bill can submit an application. This applies to all members of the concerned
Household.
3 The survey office makes an application available. The application can only be made on this form. OFCOM specifies the content of the form.
4 If the application is submitted within 30 days from the date of the invoice or the first three-month invoice Submission period, the exemption shall take effect upon approval of the application with retroactive effect from the beginning of the relevant application Delivery period until its expiration. If the application is submitted later, the exemption will take effect from the following month until Expiry of the relevant discharge period. The collection agency will provide written information to adults of the household
Confirmation to.
5 No fee will be charged for the treatment of the request.
7 If a household is dissolved, the exemption of its existing members from the duty to pay will expire.
Art. 95 RTVV Devices suitable for reception
Devices suitable for receiving radio or television programs are:
a. Devices intended for program reception or contain only components intended for reception.
b. Multifunctional devices, if they have the variety of receivable program offerings and reception quality
Equipment according to (a) are equivalent.
Information:
The ownership and ownership of the equipment does not matter.