开云体育

ctrl + shift + ? for shortcuts
© 2025 开云体育
  1. BITX20
  2. Messages
Single Messages Topics Expanded Polls

Re: Needed - relay voltage versus frequency for each of the band-pass filter relay drivers #ubitx-help

 

Yes, when you measured 5V, the 2N3904 is turned "on" and that specific relay is "picked". For example on 80m all the relays are "picked". On 10m none of the relays are "picked".

73 Kees K5BCQ
?
Join [email protected] to automatically receive all group messages.