|<<||ARDFrx2 Band spread switch. pa0nhc 20140511 NL => EN 20140721|
This switch divides the tuning range in 9 smaller parts of + and - 70kHz, or sets for the full range (ca. 875kHz). It makes tuning easier.
The switch is a 2x12 pos. one with 2 decks, f.i. Conrad.nl 709397
Only 10 positions are used. The 4k7 resistors are soldered directly between the decks. Connections between decks are made with short pieces of wire. With a piece of 4-wire cable it is connected to the tuning pot meter and PCB.