Results 1 to 3 of 3

Thread: what about the mode you're in?

  1. #1

    what about the mode you're in?

    my boat anchor has different modes; LSB, USB, AM, FM, FSK, and CW mode. i must select a mode before i transmit. i push a button to get into each mode. my 767gx does not allow code to be sent (with a straight key) on any mode other than CW, unless i'm using a computer interface. but, when just listening in to other people transmitting, i've noticed that i can receive transmissions from some people on all modes, meaning, when these people transmit, i can receive them on all modes, some modes are clearer than others but i can hear them on all modes. how is this possible?

  2. #2
    Administrator N8YX's Avatar
    Join Date
    Feb 2007
    Location
    Akron, OH
    Posts
    25,730
    Filters.

    A station being received in CW "mode" (actually, USB with a narrower filter and a different BFO offset) will sound different than the same station being received in USB - even though the signals fall on the same side of zero-beat.

    Ditto receiving a station on FSK instead of LSB.

    I don't have a link handy, but if you do a search for "SSB receiver design theory" you should find a good starting point for the basics.
    "Everyone wants to be an AM Gangsta until it's time to start doing AM Gangsta shit."

  3. #3
    word up, dawg, thank ya'

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •