SWR AND TUNER
We all need a Tuner and SWR
Meter for our QRP rigs!
Here are some projects . They are simple and easy.
The Tuner: http://www.qsl.net/wb3gck/tuner.htm
L1- 40 turns 22g enamelled wire, tapped every 8 turns
on a 35 mm platic film canister,
or wood dowel.
C1- 365 pF air variable, shaft isolated from chassis
The SWR meter is from Doug DeMaw's
W1FB 's Design Notebook page 173. The original design
appeared in 1989 / 1990 SPRAT by GM4ZNX