I found a set of plates and an old xtal. Available if wanted. WL ----- Original Message ----- > From: "infomet" <[email protected]> > To: "Boatanchors" <[email protected]> > Sent: Tuesday, January 1, 2019 5:34:33 PM > Subject: [Boatanchors] Crystal Grinding
> I ground many FT-243 surplus xtals into the 80 and 40 novice bands when I was > a > kid. > Dad had a small balance weight, maybe 5-10gm, that was used for test. > One just laid the xtal on the xmtr chassis, sat the weight on it, and read the > freq. from a RX. No need for a holder. > One could, of course, use another xtal as a reference point. > I bought xtals for a dime and sold them for 50 cents...but it took some time > and > a little skill. > Dad brought home two grades of carborundum dust, fine and finer... > Your blanks are much larger, so I can imagine getting up to 25-20gm weights. > A > few trials will tell. > I doubt you have balance weights, so solder up a stack of coins, maybe > quarters. > > Add one at a time, until you get good performance. > Grind the bottom flat before the first try. > I've thrown away quite a few loose plates from old large xtals. > They would be good as the bottom surface. > > Wilson > W4BOH > _______________________________________________ > Boatanchors mailing list > [email protected] > https://puck.nether.net/mailman/listinfo/boatanchors _______________________________________________ Boatanchors mailing list [email protected] https://puck.nether.net/mailman/listinfo/boatanchors
