The coils for matching
the filter is made of a
4C65 ring with 9,5 trifilar windings, placed under the pcb, and could
not bee seen.
KWG: 9 MHz for SSB and CW
|
Diagram |
|
The
Filters
with relay shifts.
The coils for matching
the filter is made of a |
|
The signal is scaled down 6 db, so the loss is less than 3 db. |
|
CW-filter-loss is 4 db. |