[Elecraft] Transverter calibration

[Dave]

Alan

Does your k3 have the KTCXO3-1 upgraded reference oscillator or the original
KREF3 oscillator? The KTCXO3-1 is recommended by Elecraft when locking

I had a similar issue to you on my 1st K144XV installation locking it with
the KREF3, as it was outside the range of the software offset
calculator/corrector. When I did the upgrade the problem was solved

Dave
G4FRE


Message: 2
Date: Fri, 22 Jun 2018 20:22:46 +0100
From: "G4GNX" <g4gnx at g4gnx.com>
To: "Elecraft Reflector" <elecraft at mailman.qth.net>
Subject: Re: [Elecraft] Transverter calibration
Message-ID: <CCD010CE7B2341E2AF516C8BE18794D7 at G4GNXLaptop>
Content-Type: text/plain; format=flowed; charset="utf-8";
	reply-type=response

Hi Don.
I just got back from 'experimenting'!

I turned the Reflock off and manually set the offsets according to the 
figures on the Xverter top.

With the Reflock still turned off, the discrepancy is several KHz (I did not

note the exact figures).

With the Reflock turned back on, the discrepancy is back to around 200 Hz 
and there's no way to manually adjust that in software.

I wonder if the K144XV itself is a tad off? I bought it from another amateur

so I don't know its 'tweak' history, other than I have never adjusted any of

it internally.

73,

Alan. G4GNX