Re: Transverter calibration

Posted by Oliver Dröse on Jun 22, 2018; 9:20pm
URL: http://elecraft.85.s1.nabble.com/Seems-That-6-Meters-is-Some-What-Open-tp7642198p7642269.html

Hi Alan,

that's true. What I did (was off a few hundred Hertz, too) was to
calibrate the main reference oscillator with REFLOCK enabled from a
stable 2 m source. Worked well.

73, Olli - DH8BQA

Contest, DX & radio projects: https://www.dh8bqa.de/


Am 22.06.2018 um 20:02 schrieb G4GNX:

> Hi Don.
>
> I am aware of the manual method of configuring the offsets and I
> originally used that before I installed the K144XV Ref lock option.
> The Ref lock option manual infers that all offset calculation is
> automatic when the menu is set to REFLOCK and user calibration can't
> be undertaken. Is this not the case?
>
> 73,
>
> Alan. G4GNX
>
> -----Original Message----- From: Don Wilhelm
> Sent: Friday, June 22, 2018 3:32 PM
> To: G4GNX ; Elecraft Reflector
> Subject: Re: [Elecraft] Transverter calibration
>
> Alan,
>
> Did you check the Frequency Calibration section of the K144XV option
> manual?
> Look on page 19.
> You can adjust the offset with the K3 menu XV1 OFS.  The offsets for
> each band segment should be indicated on the XV144 top cover.  If you
> have accurate frequency beacons available, you can refine those offsets
> as needed.
>
> 73,
> Don W3FPR
>
> On 6/21/2018 6:35 PM, G4GNX wrote:
>> I built a K3S a few months ago and I've installed the K144XV 2 metre
>> transverter into it, along with the K144XV Ref lock option.
>>
>> Although all of the main K3S calibration is OK, I find that the
>> K144XV is about 200Hz off nominal frequency, certainly in the 144-146
>> MHz segment.
>>
>> The manuals mention calibration being automatic, so I can't find any
>> reference to adjustment where the frequency is incorrect.
>>
>> Anyone any ideas how I can get the transverter on frequency across
>> the band?
>
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