"Terrell Hamilton" <[EMAIL PROTECTED]> made an utterance to the drakelist gang ---------------------------------------------------------------------- Howdy, Jim -
Good to hear that I was wrong about making the crystals go lower - that's a very clever trick, thanks! I guess you CAN add material to them! 73 Terry K7WLD -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Jim Gerke Sent: Sunday, February 17, 2008 7:30 AM To: [EMAIL PROTECTED] Subject: Re: [drakelist] Crystals To Swap...? Jim Gerke <[EMAIL PROTECTED]> made an utterance to the drakelist gang ---------------------------------------------------------------------- I did the same thing with crystals in the FT-243 holders when I was a Novice in the early sixties. I used toothpaste as the abrasive for moving them up in frequency. To go lower, I'd mark a corner with a lead pencil. That made 'em a little heavier and they'd go lower in frequency. The crystals used by the Drake rigs are in all metal holders with the top part of the can soldered to the base. It's tough to get them open without damaging the quartz. 73, Jim K5JG Terrell Hamilton wrote: > Hi, Eddy - > > Do you think you could "sand down" the frequency on a > crystal close to the one you want? I don't know what kind of crystals > are in your receivers, or even +how it would work for receivers, but it > worked for me for transmitting on my old homebrew rig. > > Way back in the day(late 50's), when I was a teenage novice with not > much money, I remember sanding down crystals that were given to me by > other hams. It worked pretty good and gave me different frequencies to > use on my crystal controlled 6146 xmtr. > > The crystals had to be the kind that are in a plastic case that opens up > and It only worked one way, of course - can't add material to them, > unfortunately - and I forget if sanding them made freqs go up or down - > it seems to me that it would make the freq higher the more you sand, but > that's just an educated (?) guess. I remember opening up the little > plastic case, sanding them down, putting them back in the case and then > transmitting and monitoring to see what new frequency they were. > > Sometimes I broke them, or went too far out of the novice band, but > eventually I had a few crystals that I could switch out if the band got > crowded on my single frequency xmtr. > > It was kind of tedious, but it gave me a pretty good "poor man's VFO". > If you've got lots of crystals that you don't mind experimenting with, > it might be a possibility that could work. > > What do you think, folks? Rcvr crystals are probably different, don't > open up, and there's probably some technical reason that makes this a > ridiculous suggestion. > > > > Terry > > K7WLD ---------------------------------------------------------------------- Submissions: [EMAIL PROTECTED] Unsubscribe: [EMAIL PROTECTED] - unsubscribe drakelist in body Hopelessly Lost: [EMAIL PROTECTED] - help in body of message Zerobeat Web Page: www.zerobeat.net - sponsored by www.tlchost.net ---------------------------------------------------------------------- ---------------------------------------------------------------------- Submissions: [EMAIL PROTECTED] Unsubscribe: [EMAIL PROTECTED] - unsubscribe drakelist in body Hopelessly Lost: [EMAIL PROTECTED] - help in body of message Zerobeat Web Page: www.zerobeat.net - sponsored by www.tlchost.net ----------------------------------------------------------------------
