[Elecraft] Low power out on 10M

James T. "Jim" Rogers, W4ATK rogers9466 at bellsouth.net
Fri Jun 9 10:15:05 EDT 2006


	Yeah, I know this subject has been kicked around for a while, but none the
less..... When I built the K2, I had no trouble getting the 10W out on 10M.

	1) I have rewound T2 and elevated it above the board 1/16 inch.

	2) Band 	Power at W6		Measured output.
	     20	-33 DBM		2.0 WATTS
	     10	-29.3 DBM		2.0 WATTS

	From the above measurements it seems that at this level the drive at W6 and
the power out of the Low Pass filter at the antenna connection are tracking
fairly well.

	3) Band	Power at W6		Measured output.
	     20     -26.3 DBM		10W
	     10     -26.7 DBM		5W

	The drive is still up there, but whoa nellie! What happened to the output?
This is where 10M flattens out. You can ask for more power, but it just
isn't there. Back in the old days, I would start replacing empty state
devices<G>.

	I have checked the components around the 10/12M Low Pass Filter and all
seem correct.

	Anybody seen this and got a suggestion.....?

Jim, W4ATK



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