Steve,

The K1 4 band board has only 2 low pass filters, so the band combinations are limited. 40 and 30 meters can share the same low pass, and 20, 17 and 15 can also share a low pass filter - so with the 4 band board, it is 40 and 30 meters plus your choice of 2 bands from the 20, 17, 15 meter combination.

The K1 can remember settings for 6 bands, so you can use the 2 band board to fill in any gaps that your 4 band board does not cover. If you have the same band on both boards, it will work, but the operating frequency calibration setting will only be remembered for one of them, so it is best to have the 2 band board setup for bands not covered with the 4 band board.

Band kits for the 2 band board are available from Elecraft, so you can change the bands covered, you are not slaved to the bands currently installed on that board.

73,
Don W3FPR

W2SES wrote:
I have just bought a K1-2 from eBay. It works well and I am quite pleased with it. It is configured for 40 and 20. My question is, can I buy the 4 band board, and configure it for 80, 40, 30, 20? It looks like the 4 band must start at 40, unless I am reading something wrong.


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