On Thu, Sep 15, 2016 at 12:14 PM, Dennis DuVall <duvallddennis at gmail.com> wrote: > With reasonable care sweep tubes can last a long time. The original pair of 6JS6C sweeps in my Yaesu FT-101B are still going strong after 40 years. Does your FT-101B have stock forced air cooling? Or was that an option? Rob K5UJ