[Elecraft] K3 RF Gain control reduced range after RF gain

[Dick Dievendorff]

Richard:

The RF Gain calibration procedure orchestrated by the K3 Utility turns the
preamp and attenuator on and off at specified points in a procedure devised
by KK7P.  The settings of PRE and ATTN when you start calibration should not
affect the calibration accuracy.  If you look at the text window during the
calibration (or review it afterward), you'll see that there are steps with
both preamp and attenuator off, a step with just PRE, a step with just ATTN,
and a step with both PRE and ATTN on.

The calibration is often better if you can arrange to use a signal source
that provides both -73 and -33 dB (S9 and S9+40 dB) signals and run both
"low" and "high" level calibrations.

73 de Dick, K6KR


-----Original Message-----
From: elecraft-bounces at mailman.qth.net
[mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Richard Fjeld
Sent: Wednesday, December 21, 2011 7:42 PM
To: elecraft posting
Subject: [Elecraft] K3 RF Gain control reduced range after RF gain

Nate, 
You will get better advice from others than from me, but I am wondering if
you had the pre-amp on when you did the calibration routine?

FYI, I calibrated my S-meter using the XG2 sig gen, and it was right on with
the factory settings.


Richard Fjeld, n0ce
rpfjeld at embarqmail.com
E=IR, it's the law.