It used to be that you needed an AM filter for AM (6KHz
bandwidth) and an FM filter for FM (c15KHz bandwidth). A while
ago, a firmware update made it possible to transmit AM using the
FM filter.
Because you can now run AM through the FM filter, there isn't a
lot of use for it. If you run ESSB it may be useful for blocking
nearby strong stations. It also may improve your AM signal or
ESSB signal over using the FM filter, but I haven't seen any
real tests of this possibility.
73 Bill AE6JV
On 1/29/16 at 5:53 PM, w...@hotmail.com (Doug Hensley) wrote:
Can someone unravel this for me? IF the FM filter works for
AM, does the AM filter work for FM ? If not, why not ?
Elecraft says:
** AM and FM bandwidth filters are required on the main K3
TX/RX board for TX in AM and FM modes. (Only one AM filter is
required for AM TX/RX, and one FM filter for FM TX/RX.) All
filters can be used for RX in any mode.
So,, just what do those of us new to the K3 line need to know
when choosing an AM filter ? Are they saying "Pick your
transmit mode and don't worry about the receive mode?"
-------------------------------------------------------------------------
Bill Frantz | Airline peanut bag: "Produced | Periwinkle
(408)356-8506 | in a facility that processes | 16345
Englewood Ave
www.pwpconsult.com | peanuts and other nuts." - Duh | Los Gatos,
CA 95032
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