Re: GB3MCB on 23 cms


Ralph
 


Hello John,
 
As far as I know, they do not use common frequency reference.
Each beacon is a completely seperate unit.
 
Couple of photos taken at the site in 2010
 
73
Ralph G4ALY
 
 

----- Original Message -----
From: john@...
Sent: Saturday, July 13, 2013 9:14 AM
Subject: Re: [ukmicrowaves] GB3MCB on 23 cms

 


I haven't made an accurate measurement but the 6m beacon seemed slightly off frequency last night. Do they all use the
same frequency reference? G8SEQ/P lsles of Scilly.

> -------Original Message-------
> From: Lawrence <lawrence@...>
> To: ukmicrowaves@...
> Subject: [ukmicrowaves] GB3MCB on 23 cms
> Sent: Jul 12 '13 14:40
>
> Has anyone checked the frequency of GB3MCB on 23 cms recently?
>
> For some time I have been looking for it without any luck. I assumed it
> was
> because it beams NE, which is sideways on to me, and that I use a rather
> low
> gain log periodic antenna. This morning I found it but it was not where I
> thought it would be. The web sites that list it give the frequency as
> 1296.860
> MHz but my radio indicated 1296.845 MHz which was much lower than I had
> anticipated.
>
> My radio is the IC-910X and earlier this year I had replaced the crystal
> oscillator with the optional high stability CR-293 (photos of this and of
> the
> antenna are on my QRZ entry). I have not calibrated it yet but hope to be
> able
> to do soon. I have acquired a Jupiter T GPS receiver and could use the
> ratio
> function on my counter to compare the 30.2 MHz with 10 kHz until I build a
> PLL
> circuit to give me 10 MHz.
>
> When I have compared my indicated frequency on 23 cms with others it is
> usually
> similar and within 1 kHz so I assume I am not too far out. The CR-293 has
> greatly improved the stability and so got rid of the drift which had been
> annoying. That was the most important improvement that I had been looking
> for.
>
> 73, Lawrence GJ3RAX
>
>
>

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