I have the same setup here and drive the amp with 5-7 W from K3 to 1 Kw
with MEDIUM setting of the amp.
The amp shows input power very close to that set on K3. My amp is EU
version and it would switch overdrive protection ON if input exceeds 20W.
Check if TUNE POWER of your K3 set to NORMAL
There is the story, probably apocryphal, of a famous rock star who said
the secret to his success was that the volume knob on his amplifier went
to 11 instead of just 10 like all the others.
73,
Fred ["Skip"] K6DGW
Sparks NV DM09dn
Washoe County
On 9/10/2017 8:09 PM, Jim Brown wrote:
On
On 9/10/2017 2:10 PM, Bill Frantz wrote:
I have just set up an Expert 1.3K-FA amplifier with my K3 (with most
of the upgrades to become a K3S). My question is, when I drive it with
10W set on the K3 output power, it shows a drive level of about 30W
and and output level of 950W. What is going
Thanks Don. I got out my old Phillips 25 MHz scope and looked at
the calibration sticker dated 1983. I decided to check the
readout with a fresh alkaline battery and both the battery,
checked with the DVM, and the scope looked OK.
I did the measurements on both 20M and 40M, since 40M is less
Brings up an interesting question.
My recollection from numerous amps that they may read OK (within 10
-15%) near full power, at low power they typically were way off. I
suspect whatever calibration was done, if any, was at the high end of
the scale. The load was probably pure resistive and
Bill,
I would say something is not calibrated correctly - either the K3
wattmeter or the power determining device in the amp. It is difficult
to say which one without doing some measurements.
I would connect the K3 to a dummy load for the 1st test. Get a 'scope
out with a 10x probe. The
as well.
73 Darrell AB2E
Sent via the Samsung GALAXY S® 5, an AT 4G LTE smartphone
Original message
From: Bill Frantz <fra...@pwpconsult.com>
Date: 9/10/17 5:10 PM (GMT-04:00)
To: elecraft@mailman.qth.net
Subject: [Elecraft] K3 and Expert 1.3K-FA amplifier power
I hav
I have just set up an Expert 1.3K-FA amplifier with my K3 (with
most of the upgrades to become a K3S). My question is, when I
drive it with 10W set on the K3 output power, it shows a drive
level of about 30W and and output level of 950W. What is going on?
Details: The two boxes are connected
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