Received-SPF: neutral (gmail.com: 193.82.116.20 is neither permitted nor denied by best guess record for domain of owner-rsgb_lf_group@blacksheep.org)
Message-ID: <00dd01c6c49b$46139020$0fc428c3@captbrian>
From: "captbrian" <captbrian@ukonline.co.uk>
To: <rsgb_lf_group@blacksheep.org>
References: <NKEMLGOEKANPNJOBFBAFIEJHCOAA.g4wgt@tiscali.co.uk>
Date: Sun, 20 Aug 2006 20:21:41 +0100
MIME-Version: 1.0
Subject: Re: LF: TIP: modifiying X-tals
Content-Type: text/plain;
	charset="iso-8859-1"
Content-Transfer-Encoding: 7bit
Sender: owner-rsgb_lf_group@blacksheep.org
Precedence: bulk
Reply-To: rsgb_lf_group@blacksheep.org
Status: O

Figure of 8 is quite right ,The trick was to cut a shallow shape in the face
of a large cork to hold the crystal and to to cushion it . Also to finish
with what used to be called "Jewellers Rouge". A fine 'powder' being called
a 'flour' I believe.

Bryan [ older than one might think   ;-((   ] G3GVB


----- Original Message -----
From: "Gary - G4WGT" <g4wgt@tiscali.co.uk>
To: <rsgb_lf_group@blacksheep.org>
Sent: 20 August 2006 10:52
Subject: RE: LF: TIP: modifiying X-tals


> Hi All,
>
> When I built my first xtal controlled Tx (2 Metres) I changed the
> frequencies of xtals for the oscillator using very fine carborundum paste
&
> rubbed the quartz slice in a figure of 8 movement on a flat surface, this
> was successful exept when putting too much pressure & breaking the tiny
> slice. The quartz slice probably can't be removed from the encapsulations
> today to use this method.
>
> 73
>
> Gary - G4WGT.
>
> -----Original Message-----
> From: owner-rsgb_lf_group@blacksheep.org
> [mailto:owner-rsgb_lf_group@blacksheep.org]On Behalf Of
riese-k3djc@juno.com
> Sent: 19 August 2006 21:39
> To: rsgb_lf_group@blacksheep.org
> Subject: Re: LF: TIP: modifiying X-tals
>
>
> In the ol days we would use a pencil or rub a bit of solder on the face
> real hams used ? acid to etch and raise the frequency,, I dont remember
> what the acid was but the local chemical company would sell a bit
>
> drill a hole in the mount face, tap it and use a screw to apply
> pressure and move the frequency around
>
> Bob K3DJC
>
>
> On Sat, 19 Aug 2006 21:16:13 +0200 "Dick" <knaap159@zonnet.nl> writes:
>   For those who didn't know, use following 'trick' to tune your own X-tal.
> (found it in a magazine from the VERON)
>
>   Take an permant marker pen ("Edding, or similar) and put a little
> stripe/line on the X-tal plate.
>   You will notice that the frequency goes down a bit.
>