Date: Mon, 3 Jan 94 04:30:31 PST From: Ham-Homebrew Mailing List and Newsgroup Errors-To: Ham-Homebrew-Errors@UCSD.Edu Reply-To: Ham-Homebrew@UCSD.Edu Precedence: Bulk Subject: Ham-Homebrew Digest V93 #152 To: Ham-Homebrew Ham-Homebrew Digest Mon, 3 Jan 94 Volume 93 : Issue 152 Today's Topics: Charging Deep-Cycle Batteries from Automobile TrakBox panel layout Wanted : RF Selfs design formulae Send Replies or notes for publication to: Send subscription requests to: Problems you can't solve otherwise to brian@ucsd.edu. Archives of past issues of the Ham-Homebrew Digest are available (by FTP only) from UCSD.Edu in directory "mailarchives/ham-homebrew". We trust that readers are intelligent enough to realize that all text herein consists of personal comments and does not represent the official policies or positions of any party. Your mileage may vary. So there. ---------------------------------------------------------------------- Date: Sun, 2 Jan 1994 23:29:58 GMT From: usc!howland.reston.ans.net!wupost!csus.edu!netcom.com!smj@network.ucsd.edu Subject: Charging Deep-Cycle Batteries from Automobile To: ham-homebrew@ucsd.edu Gary Coffman (gary@ke4zv.atl.ga.us) wrote: : or leak. The *really* good batteries are the traction gel cells, : but they are still seriously expensive. The 26 used in the GM KMART sells the (exide) Nautilus Mega Cycle, a deep-cycle Marine battery with fully gelled electrolite, for $99. It is designed to be charged by a normal (NOT deep-cycle) charger of not more than 14.5v. It claimes that it can be fully discharged and left that way for up to one month, and still be fully recharged. They even claim that it will operate fully submerged. -smj ------------------------------ Date: Mon, 3 Jan 1994 04:57:27 GMT From: netcomsv!netcom.com!fmitch@decwrl.dec.com Subject: TrakBox panel layout To: ham-homebrew@ucsd.edu this is a generic reply to all email in response to my trakbox panel layout post to the usenet and i am also posting this msg on compuserve... the panel layout is enclosure specific for the Bud LB-1663 Contempo box... this box is a 'ten-tec' type box, gray in color with black plastic side panels, with the following dimensions: 3 1/4" high 7 1/32" wide 7 3/16" deep the box is a mite too small for the pcb to fit into the pcb grooves molded in the plastic side panels, therefore you have to *trim* the printed circuit board by about 3/16 ths of an inch... this is easily done with a hand file... it is *much* easier to do if you haven't populated the board... if you don't want to trim your pcb you can still use the layout as an example of "how to do it"... the current layout is for the switches furnished with the first batch of kits... the second batch of kits is currently being 'kitted'... the satellite selector switch for the second batch of kits will be a thumbwheel type... i am being loaned one of the new type switches and will modify the panel layout to accomodate either switch... i will be posting the corel draw file and also a gif file to compuserve as soon as we have the layout modified for the new type selector switch... (if anyone needs a different file type please let me know... i can furnish any file type supported as an export file from corel draw 3) ... look for a filed named tboxpanl.zip or something similar... a warning on the gif file --- it looses much detail, and is only useful for you to grab a quick peek at the layout... i am looking for a ftp site to upload the files for internet access, any suggestions for a public accessable location will be appreciated... if you need the files directly, you can download the zip file from my data line, see below, or send me a blank, *formatted* disk of any flavor, along with return postage... i will dump the files on your disk and mail them back to you... thanks, mitch, wa4osr usnail: felton mitchell, 11 midtown park, e., mobile, al 36606 usa packet: WA4OSR@W4IAX.#MOBAL.AL.USA.NA internet: fmitch@netcom.com landline: 205-342-7259 home, 205-476-4100 work, 205-476-0465 fax 205-342-4073 data -- ------------------------------------------------------------------------------- fmitch@netcom.com Felton "Mitch" Mitchell, WA4OSR in Mobile, Alabama USA 205-342-7259 home, 205-476-4100 work, 205-476-0465 FAX co-sysop for W4IAX bbs running fbb ... sysop for WA4OSR DXCluster in Mobile.. ------------------------------------------------------------------------------ ------------------------------ Date: 3 Jan 1994 09:27:08 GMT From: library.ucla.edu!europa.eng.gtefsd.com!howland.reston.ans.net!xlink.net!scsing.switch.ch!swidir.switch.ch!univ-lyon1.fr!elendir@network.ucsd.edu Subject: Wanted : RF Selfs design formulae To: ham-homebrew@ucsd.edu Hello. I am looking for RF selfs design formulae. While I have some, like the Nagaoka (?), they are not useful in the UHF range. I am especially interested in knowing how to compute the self of a lone silver-layered copper wire, like those found in RF tuners. Can someone help me ? Thanks. Vince (Still waiting for my ticket, one month and a day...) -- ------------------------------ End of Ham-Homebrew Digest V93 #152 ****************************** ******************************