OK, I'm sure I am overlooking something simple but I can not find
(or remember) how to calibrate the voltage display in the K3.
I had to repair one of my Astron RS-35A power supplies for the first
time in 30 years (one of the diodes shorted) and when I put it back on
line I decided to double che
Joe,
How long is your power cable from the RS-35A to your K3, and what gauge wire is
used? You could easily drop 0.2 volts in the cable depending how long it is
and the gauge of the wire.
73,
Bob Nobis - N7RJN
n7...@nobis.net
> On Nov 24, 2015, at 08:06, Joe Subich, W4TV wrote:
>
>
> OK
Joe, is there not at least one diode junction or solid state switch in series
with the input power inside the K3?
Michael Blake - K9JRI
> On Nov 24, 2015, at 10:06 AM, Joe Subich, W4TV wrote:
>
>
> OK, I'm sure I am overlooking something simple but I can not find
> (or remember) how to cal
It matters not if there is a series diode. The Voltmeter should
be calibrated to the input power. I remember that being the case
when I assembled my first K3.
73,
... Joe, W4TV
On 11/24/2015 11:02 AM, Michael Blake wrote:
Joe, is there not at least one diode junction or solid state swit
You could easily drop 0.2 volts in the cable depending how long it
isand the gauge of the wire.
Not in six feet of #10 wire at 1.5A. Even if it were #12 the voltage
drop should be less than 0.03V (1.62 Ohms/1000 feet for #12).
73,
... Joe, W4TV
On 11/24/2015 10:39 AM, Robert Nobis wrot
, November 24, 2015 9:31 AM
To: Robert Nobis; Elecraft
Subject: Re: [Elecraft] K3 Voltmeter calibration ...
> You could easily drop 0.2 volts in the cable depending how long it
> isand the gauge of the wire.
Not in six feet of #10 wire at 1.5A. Even if it were #12 the voltage drop
should be les
Joe, if you just want to make the K3's voltmeter match your "known good"
reference meter, you need to adjust the "ADC REF" value.
Go into the CONFIG menu, set Tech mode "On", then go to the "ADC REF"
setting. Note what it is before changing anything, in case this
adjustment affects anything e
, W4TV
Sent: Tuesday, November 24, 2015 9:31 AM
To: Robert Nobis; Elecraft
Subject: Re: [Elecraft] K3 Voltmeter calibration ...
You could easily drop 0.2 volts in the cable depending how long it
isand the gauge of the wire.
Not in six feet of #10 wire at 1.5A. Even if it were #12 the voltage
Just checked my K3/10 and it displays 13.7 with 13.73v measured where
the power cable is attached to my power distribution. Negligible
voltage drop in Elecraft supplied power cord when in Rx which displays 1.01a.
73, Ed - KL7UW
http://www.kl7uw.com
"Kits made by KL7UW"
Dubus Mag business:
I've already set ADC REF as documented in the manual. The Voltage is
still off. There should be a procedure to set the voltage as there was
when I assembled this K3 (s/n 1450) several years ago. Unfortunately,
I can no longer find it in the current Owner's Manual or Assembly
Manual.
73,
..
r the 0.2VDC drop across the
reverse protection diode.
73, Ron AC7AC
-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Joe
Subich, W4TV
Sent: Tuesday, November 24, 2015 9:31 AM
To: Robert Nobis; Elecraft
Subject: Re: [Elecraft] K3 Voltmeter calibr
verse protection diode.
>
> 73, Ron AC7AC
>
> -Original Message-
> From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Joe
> Subich, W4TV
> Sent: Tuesday, November 24, 2015 9:31 AM
> To: Robert Nobis; Elecraft
> Subject: Re: [Elecraft] K3 Voltm
And the info below is what I found in Fred Cady's book on the K3. There
is no other "calibration" for voltage in that book.
Until Don Wilhelm or Wayne Burdick chimes in, I suspect there may not
be any other adjustment available.
73,
Brian, W6FVI
On 11/24/2015 1:49 PM, Joe Subich, W4TV wrote
board.
73,
Mark Musick, WB9CIF
-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Brian
& Cyndi
Sent: Tuesday, November 24, 2015 11:19 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3 Voltmeter calibration ...
And the info below is w
-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Brian
& Cyndi
Sent: Tuesday, November 24, 2015 11:19 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3 Voltmeter calibration ...
And the info below is what I found in Fred Cady's book on the K3. There
hat
>> is at the APP connection on the RF board.
>>
>> 73,
>>
>> Mark Musick, WB9CIF
>>
>> -Original Message-
>> From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Brian
>> & Cyndi
>> Sent: Tuesday, November
,
Mark Musick, WB9CIF
-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Brian
& Cyndi
Sent: Tuesday, November 24, 2015 11:19 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3 Voltmeter calibration ...
And the info below is what I found
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