[ARC5] 40m ft-243

[wb3fau55 at neo.rr.com]

yes, i did the  hand grind- figure 8 routine.  moving it up 100kc  was  fun for sure.  
i had  trouble  when i got  near  my target freq-7290.  I  took it apart 3 times and cleaned it
as it  did not want to osc.  works  FB.  73 Russ.
---- Dennis Monticelli <dennis.monticelli at gmail.com> wrote: 
> It is way hard to keep parallelism.  Many years ago I tried the best I
> could and still couldn't move them very far before I messed 'em up forever.
>  I used a flat glass plate.  I pressed the opposing corners.  I did my
> figure eights and counted them.  I switched to the other opposing corners.
>  I was patient.  Still not much joy.  That's why I ended up etching.
> 
> Dennis AE6C
> 
> On Fri, Mar 15, 2013 at 8:10 PM, Kenneth G. Gordon <kgordon2006 at frontier.com
> > wrote:
> 
> > Hand grinding crystals to practically any frequency is not the problem: the
> > BIG problem is maintaining the sides and ends of the crystal PARALLEL.
> >
> > Once they get out of parallel, with hand grinding it is nearly impossible
> > to get
> > them back parallel.
> >
> > When the sides are not parallel the activity goes WAY down.
> >
> > Commericial outfits used simple laps made of steel plates on what amounted
> > to a mill or a lathe.
> >
> > Most hams don't have such a device.
> >
> > Kenneth G. Gordon W7EKB
> >
> > "Courage is being scared to death but saddling up anyway."--- John   Wayne
> >
> > ______________________________________________________________
> > ARC5 mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/arc5
> > Help: http://mailman.qth.net/mmfaq.htm
> > Post: mailto:ARC5 at mailman.qth.net
> >
> > This list hosted by: http://www.qsl.net
> > Please help support this email list: http://www.qsl.net/donate.html
> >
> ______________________________________________________________
> ARC5 mailing list
> Home: http://mailman.qth.net/mailman/listinfo/arc5
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:ARC5 at mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html