[K3] [Elecraft] FLx GN Adding Db gain

[Dick Dievendorff]

The value in the table in the K3 Utility Help for the Crystal Filter
Configuration for the 400 Hz filter is 7 dB. This is a starting point. Your
individual filter may vary from that.

The values in this table came from the Elecraft manufacturing lab. These are
the starting gain compensation values that Elecraft uses when it prepares a
factory-built K3. 

After these starting values are set, then the filter gain compensation is
further adjusted (using a voltmeter across the speaker and a signal
generator, I think) to deal with filter sample variations.

7 db from the table in K3 Utility Help seems pretty close to the 6-7 db you
mentioned in your findings.

I agree that the value in the Owner's Manual isn't consistent with this.

Dick, K6KR


-----Original Message-----
From: KE2N at cs.com [mailto:KE2N at cs.com] 
Sent: Tuesday, November 11, 2008 7:40 AM
To: "Dick Dievendorff"; elecraft at mailman.qth.net
Subject: RE: [K3] [Elecraft] FLx GN Adding Db gain

hmmm let me try again

the value in the table for the 400 Hz filter is clearly wrong.
or the spec for the filter has changed since the manunal was written

Ken