What the thread found

• A video sender operating in the 900MHz range was reported to cause problems when used with a BFD follow focus system.
• Wireless microphones from sound departments can cause BFD motors to stutter or move erratically, though experiences vary among users.
• Low battery voltage in a BFD can cause the motor to oscillate or behave erratically, which may be mistaken for interference.
• The Modulus wireless transmitter should be kept below channel 40 when operating alongside a BFD to minimize potential interference.
• Some users have operated BFD systems simultaneously with multiple wireless microphones and transmitters without experiencing interference issues.
• The behavior and susceptibility to interference can vary between individual BFD units.

Depends on

• The 900MHz interference claim references an unverified earlier discussion from 2001-2002.
• Some accounts describe interference while others deny experiencing any problems under similar conditions.
• It remains unclear whether interference affects video signal, focus control, both, or is actually caused by low batteries or channel conflicts rather than RF interference.
• No definitive testing or resolution is documented in this thread.
• Experiences reported are anecdotal and equipment-specific.

Gear in this thread

Moduluscatalog, BFD

Parts

Follow Focus

Same gear or parts

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