Leigh@WA5ZNU.org said: > For reference, Ridge Equipment has a photo of one of this year's crop > of FE-5680A mounted to a large aluminum plate. > http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=330233071735 > http://i43.tinypic.com/126cpcp.jpg Is that an aluminum plate or the top side of a PCB used as a heat sink? To me, the first picture looks green/FR4 around the edges. (and a stripe on the left) -- These are my opinions, not necessarily my employer's. I hate spam.

Hal Murray wrote: >Leigh@WA5ZNU.org said: > > >>For reference, Ridge Equipment has a photo of one of this year's crop >>of FE-5680A mounted to a large aluminum plate. >>http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=330233071735 >>http://i43.tinypic.com/126cpcp.jpg >> >> > >Is that an aluminum plate or the top side of a PCB used as a heat sink? > >To me, the first picture looks green/FR4 around the edges. (and a stripe on >the left) > > > Yes, that is a portion of the board I described in an earlier message. The board is thick fiberglass plated heavily on both the top and bottom. The board in the picture has been cut both above and below the 5680A. The plating ended about where the lower cut is, but the plating continued farther above the top of the unit in the picture. My earlier message gave the dimensions. One minor note about this board. The screws holding the 5680 to the borad were an unusual type. I can't remember, I think they may have been a square drive. They were difficult to remove as I had no proper tool to unscrew them. I think I made something from steel rod to start them losening.

They look like Torx Screws. Not so? Thanks, Joe -----Original Message----- From: time-nuts-bounces@febo.com [mailto:time-nuts-bounces@febo.com] On Behalf Of Rex Sent: Monday, June 15, 2009 2:33 AM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] FE-5680A thermal management Hal Murray wrote: >Leigh@WA5ZNU.org said: > > >>For reference, Ridge Equipment has a photo of one of this year's crop >>of FE-5680A mounted to a large aluminum plate. >>http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=330233071735 >>http://i43.tinypic.com/126cpcp.jpg >> >> > >Is that an aluminum plate or the top side of a PCB used as a heat sink? > >To me, the first picture looks green/FR4 around the edges. (and a >stripe on >the left) > > > Yes, that is a portion of the board I described in an earlier message. The board is thick fiberglass plated heavily on both the top and bottom. The board in the picture has been cut both above and below the 5680A. The plating ended about where the lower cut is, but the plating continued farther above the top of the unit in the picture. My earlier message gave the dimensions. One minor note about this board. The screws holding the 5680 to the borad were an unusual type. I can't remember, I think they may have been a square drive. They were difficult to remove as I had no proper tool to unscrew them. I think I made something from steel rod to start them losening. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.

No. I have one and it's very appropriate for a piece of Time-Nut equipment. They're Allen screws. :-) Ed J. L. Trantham wrote: > They look like Torx Screws. Not so? > > Thanks, > > Joe > > -----Original Message----- > From: time-nuts-bounces@febo.com [mailto:time-nuts-bounces@febo.com] On > Behalf Of Rex > Sent: Monday, June 15, 2009 2:33 AM > To: Discussion of precise time and frequency measurement > Subject: Re: [time-nuts] FE-5680A thermal management > > > Hal Murray wrote: > > >> Leigh@WA5ZNU.org said: >> >> >> >>> For reference, Ridge Equipment has a photo of one of this year's crop >>> of FE-5680A mounted to a large aluminum plate. >>> http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=330233071735 >>> http://i43.tinypic.com/126cpcp.jpg >>> >>> >>> >> Is that an aluminum plate or the top side of a PCB used as a heat sink? >> >> To me, the first picture looks green/FR4 around the edges. (and a >> stripe on >> the left) >> >> >> >> > Yes, that is a portion of the board I described in an earlier message. > The board is thick fiberglass plated heavily on both the top and bottom. > The board in the picture has been cut both above and below the 5680A. > The plating ended about where the lower cut is, but the plating > continued farther above the top of the unit in the picture. My earlier > message gave the dimensions. > > One minor note about this board. The screws holding the 5680 to the > borad were an unusual type. I can't remember, I think they may have been > a square drive. They were difficult to remove as I had no proper tool to > unscrew them. I think I made something from steel rod to start them > losening. > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. >

Nevermind. I went back and looked again. The screws are a bit odd and sloppy tolerences, but a 1/16 inch allen wrench seems to work. I guess my memory from a couple years back was a bit off. -Rex Ed Palmer wrote: > No. I have one and it's very appropriate for a piece of Time-Nut > equipment. They're Allen screws. :-) > > Ed > > J. L. Trantham wrote: > >> They look like Torx Screws. Not so? >> >> Thanks, >> >> Joe >> >> -----Original Message----- >> From: time-nuts-bounces@febo.com [mailto:time-nuts-bounces@febo.com] On >> Behalf Of Rex >> Sent: Monday, June 15, 2009 2:33 AM >> To: Discussion of precise time and frequency measurement >> Subject: Re: [time-nuts] FE-5680A thermal management >> >> >> Hal Murray wrote: >> >> >> >>> Leigh@WA5ZNU.org said: >>> >>> >>> >>> >>>> For reference, Ridge Equipment has a photo of one of this year's >>>> crop of FE-5680A mounted to a large aluminum plate. >>>> http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=330233071735 >>>> http://i43.tinypic.com/126cpcp.jpg >>>> >>>> >>> >>> Is that an aluminum plate or the top side of a PCB used as a heat sink? >>> >>> To me, the first picture looks green/FR4 around the edges. (and a >>> stripe on >>> the left) >>> >>> >>> >>> >> >> Yes, that is a portion of the board I described in an earlier >> message. The board is thick fiberglass plated heavily on both the top >> and bottom. The board in the picture has been cut both above and >> below the 5680A. The plating ended about where the lower cut is, but >> the plating continued farther above the top of the unit in the >> picture. My earlier message gave the dimensions. >> >> One minor note about this board. The screws holding the 5680 to the >> borad were an unusual type. I can't remember, I think they may have >> been a square drive. They were difficult to remove as I had no proper >> tool to unscrew them. I think I made something from steel rod to >> start them losening. >> >> >> _______________________________________________ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to >> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. >> >> >> _______________________________________________ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to >> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. >> > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > >