RE: Static - SAFETY WARNING
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Don,
Yes, you're absolutely right. My suggestion to use some conductive surface (alum.) assumes it is used only for construction (no power applied). During testing, you'd have to change the setup to prevent the rig from shorting! I'm glad you mentioned it! As I think about it, I can see that the metal top is a poor substitute for a real static mat and can do only 1/2 of what a true high-impedance / conductive mat can do. I honestly don't know the price of a static mat. I got mine free from work as it was soon to be tossed out. I've seen 'em in Mouser and I think they were $50 or so but I bet they can be had for less. 73! - Keith- -----Original Message----- From: Don Wilhelm [mailto:[hidden email]] I agree with all your ESD comments, but I would hesitate to suggest that anyone do electronics work on a completely conductive surface such as a sheet of aluminum. The possibility of a short to the work surface while testing or working on powered equipment is high. Even with low voltages, the current can be high and therefore dangerous. The surface should be conductive, but not of a low resistance. _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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Hi Don;
I wouldn't build without a Mat. See the Jameco site www.jameco.com part# 10575ck = 11.3x22" mat for $9.95. Get a wrist strap too; there were some for under $7. No connection to Jameco. pete, kn6bi -----Original Message----- From: [hidden email] [mailto:[hidden email]]On Behalf Of Darwin, Keith Sent: Tuesday, June 06, 2006 7:04 AM To: [hidden email] Subject: RE: [Elecraft] Static - SAFETY WARNING Don, Yes, you're absolutely right. My suggestion to use some conductive surface (alum.) assumes it is used only for construction (no power applied). During testing, you'd have to change the setup to prevent the rig from shorting! I'm glad you mentioned it! As I think about it, I can see that the metal top is a poor substitute for a real static mat and can do only 1/2 of what a true high-impedance / conductive mat can do. I honestly don't know the price of a static mat. I got mine free from work as it was soon to be tossed out. I've seen 'em in Mouser and I think they were $50 or so but I bet they can be had for less. 73! - Keith- -----Original Message----- From: Don Wilhelm [mailto:[hidden email]] I agree with all your ESD comments, but I would hesitate to suggest that anyone do electronics work on a completely conductive surface such as a sheet of aluminum. The possibility of a short to the work surface while testing or working on powered equipment is high. Even with low voltages, the current can be high and therefore dangerous. The surface should be conductive, but not of a low resistance. _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com __________ NOD32 1.1581 (20060606) Information __________ This message was checked by NOD32 antivirus system. http://www.eset.com _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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In reply to this post by Darwin, Keith
Hi Paul;
I called Jameco. They told me that the part number that I quoted will no longer be "reordered", but they currently have 50 in stock. The larger sizes will be restocked and part of normal inventory. pete -----Original Message----- From: Paul Gates, KD3JF [mailto:[hidden email]] Sent: Tuesday, June 06, 2006 8:32 AM To: peter gerba Subject: Re: [Elecraft] Static - SAFETY WARNING Mat no longer available with Jameco. Paul, KD3JF Glen Burnie, MD FM19qd (Map Grid Square) ----- Original Message ---- From: peter gerba <[hidden email]> To: "Darwin, Keith" <[hidden email]>; [hidden email] Sent: Tuesday, June 6, 2006 11:26:10 AM Subject: RE: [Elecraft] Static - SAFETY WARNING Hi Don; I wouldn't build without a Mat. See the Jameco site www.jameco.com part# 10575ck = 11.3x22" mat for $9.95. Get a wrist strap too; there were some for under $7. No connection to Jameco. pete, kn6bi -----Original Message----- From: [hidden email] [mailto:[hidden email]]On Behalf Of Darwin, Keith Sent: Tuesday, June 06, 2006 7:04 AM To: [hidden email] Subject: RE: [Elecraft] Static - SAFETY WARNING Don, Yes, you're absolutely right. My suggestion to use some conductive surface (alum.) assumes it is used only for construction (no power applied). During testing, you'd have to change the setup to prevent the rig from shorting! I'm glad you mentioned it! As I think about it, I can see that the metal top is a poor substitute for a real static mat and can do only 1/2 of what a true high-impedance / conductive mat can do. I honestly don't know the price of a static mat. I got mine free from work as it was soon to be tossed out. I've seen 'em in Mouser and I think they were $50 or so but I bet they can be had for less. 73! - Keith- -----Original Message----- From: Don Wilhelm [mailto:[hidden email]] I agree with all your ESD comments, but I would hesitate to suggest that anyone do electronics work on a completely conductive surface such as a sheet of aluminum. The possibility of a short to the work surface while testing or working on powered equipment is high. Even with low voltages, the current can be high and therefore dangerous. The surface should be conductive, but not of a low resistance. _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com __________ NOD32 1.1581 (20060606) Information __________ This message was checked by NOD32 antivirus system. http://www.eset.com _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com __________ NOD32 1.1581 (20060606) Information __________ This message was checked by NOD32 antivirus system. http://www.eset.com _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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Pete,
I checked the website and see that part number 10575 is not ROHS compatible, but they have a new one the same size with "ROHS yes" and that is likely their replacement - the part number is 10576, priced at $9.95 each. Again the website is www.jameco.com - since I have no connection with Jameco, this is only my best guess. 73, Don W3FPR > -----Original Message----- > > Hi Paul; > > I called Jameco. They told me that the part number that I quoted will no > longer be "reordered", but they currently have 50 in stock. The > larger sizes > will be restocked and part of normal inventory. > > pete > > -----Original Message----- > From: Paul Gates, KD3JF [mailto:[hidden email]] > Sent: Tuesday, June 06, 2006 8:32 AM > To: peter gerba > Subject: Re: [Elecraft] Static - SAFETY WARNING > > > Mat no longer available with Jameco. > > Paul, KD3JF > Glen Burnie, MD > FM19qd (Map Grid Square) > > > ----- Original Message ---- > From: peter gerba <[hidden email]> > To: "Darwin, Keith" <[hidden email]>; [hidden email] > Sent: Tuesday, June 6, 2006 11:26:10 AM > Subject: RE: [Elecraft] Static - SAFETY WARNING > > Hi Don; > > I wouldn't build without a Mat. > > See the Jameco site www.jameco.com part# 10575ck = 11.3x22" mat > for $9.95. > Get a wrist strap too; there were some for under $7. > > No connection to Jameco. > > pete, kn6bi > > > _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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