Re: [Repeater-Builder] Cavity filters from aluminium beer barrels ?
Thanks to all that sent sensible info about the subjectCheers Dave Ian Ashford [EMAIL PROTECTED] wrote: Dave.I have a couple of beer barrel resonators made in England by Aerialfacilities ltd (Now gridcom) :A brand new barrel is silver plated then painted in grey etch primer/ glossThe old stainless -steel pickup tube and mounting plate is removed andreplaced by a silver-plated variable length plunger of diameter 2 1/2"(It has to be this size because a beer barrel is quite "fat" and the Zo hasto be about 70 ohm)The plunger is made of moving and fixed sections connected via a ring offingerstock.An invar rod couples the moving plunger to the top locking collar which ispart of the toplate.Two "n" connectors with 10 guage silver plated copper loops are fittedeither side of the plunger.I have 70dB notch and 1dB insertion at 145.6/145.0 per cavity inantiresonant mode.My conclusion on Beerbarrels is that they perform well but are difficult tomount into a rack anda four barrel duplexer is too bulky.However they are cheap and fun to work with...Try "Nu-Swift" fire extinguishers on 70cm also.IanG8PWEwww.gb3dx.comSubject: [Repeater-Builder] Cavity filters from aluminium beer barrels ? Hi, Has anyone used beer barrels to make cavity filters ? Any info/designs would be useful.Cheers DaveYahoo! Groups Links* To visit your group on the web, go to:http://groups.yahoo.com/group/Repeater-Builder/* To unsubscribe from this group, send an email to:[EMAIL PROTECTED]* Your use of Yahoo! Groups is subject to:http://docs.yahoo.com/info/terms/ ALL-NEW Yahoo! Messenger - all new features - even more fun! Yahoo! Groups Links To visit your group on the web, go to:http://groups.yahoo.com/group/Repeater-Builder/ To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] Re: Cavity filters from aluminium beer barrels ?
I should have known better than to ask you lot about beer! hi. Whilst some beer barrels are stainless steel, some in the UK are plastic coated aluminium (I'm suprised no one mentioned making cavities out of the old wooden kegs!) Seriously though I have seen duplexers made from beer barrels (not 6m one's !) and I don't know if the barrels would have enough height for 2m one's ? Any serious designs/comments please ? Cheers Dave Laryn Lohman [EMAIL PROTECTED] wrote: --- In Repeater-Builder@yahoogroups.com, Kevin Custer <[EMAIL PROTECTED]>wrote:Is there a difference? I never seen a difference. KevinProbably look pretty much the same while EMPTYING the cavity...Laryn K8TVZYahoo! Groups Links* To visit your group on the web, go to:http://groups.yahoo.com/group/Repeater-Builder/* To unsubscribe from this group, send an email to:[EMAIL PROTECTED]* Your use of Yahoo! Groups is subject to:http://docs.yahoo.com/info/terms/ ALL-NEW Yahoo! Messenger - all new features - even more fun! Yahoo! Groups Links To visit your group on the web, go to:http://groups.yahoo.com/group/Repeater-Builder/ To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] Controller identification ?
Hi Charles, Any joy ? Cheers Dave UZN Charles Miller [EMAIL PROTECTED] wrote: Dave,Looked in my Centracom books and could not find anything on this board. Iwill look in my books at work and see what I can find.Charles MillerWD5EEHSr. ET - City of Dallas - Communications- Original Message - From: "Dave Dawson" <[EMAIL PROTECTED]>To: <REPEATER-BUILDER@YAHOOGROUPS.COM>Sent: Monday, April 12, 2004 4:57 AMSubject: [Repeater-Builder] Controller identification ? Hi All, Can anyone please give me any info on the attached logic boardplease i.e. pinouts and any other gems ? Any help appreciated...Cheers Dave UZN - Yahoo! Messenger - Communicate instantly..."Ping" your friends today!Download Messenger NowYahoo! Groups Links* To visit your group on the web, go to:http://groups.yahoo.com/group/Repeater-Builder/* To unsubscribe from this group, send an email to:[EMAIL PROTECTED]* Your use of Yahoo! Groups is subject to:http://docs.yahoo.com/info/terms/ Yahoo! Messenger - Communicate instantly..."Ping" your friends today! Download Messenger Now Yahoo! Groups Links To visit your group on the web, go to:http://groups.yahoo.com/group/Repeater-Builder/ To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
[Repeater-Builder] Thanks for info on 6M duplexers using C02 bottles ?
Hi All, A very big thank you to all in the group that have responded to my plea for help...On reflection I think that I will try and source some 6" ali tubing from somewhere in the UK and leave the CO2 bottles where they are ! In the mean time I have some LDF550 to hack about into 1/4 wave stubs ! Thanks again and cheers from London Dave G7UZN Mike Morris [EMAIL PROTECTED] wrote: I know where there was about 40 feet of some 6 and 3/8" heliaxa while back... but shipping it would be a major PITA.MikeAt 09:01 AM 3/16/04 -0500, you wrote:Yep,I built a set, and they work well.. getting the first one right is thetrick. The other 7 came easy. I would suggest you look to my website.. but it is down for maintenance at the moment.3.5" hardline would be an interesting project... haven't tried that one yet.73'sMikeAt 06:38 AM 03/16/2004 +, you wrote: Check out WB5WPA's page @ http://www.dallas.net/~jvpoll/dup6m/dup6m.html--- In Repeater-Builder@yahoogroups.com, "NØATH" <[EMAIL PROTECTED]> wrote: Subject: Re: [Repeater-Builder] Re: 6M duplexers using C02 bottles ? There is info on adding a pass notch out of cable to the inside somewhere on the web, I wanted to try this and the following year that tower was destroyed by mom nature. I would be interested in this site if any one knows where I could find it. Have some pass only cans that could use some help. I also have some pcs. of 3 1/2 inch hardline if anyone would like to build some 6 meter cans from it. You pay shipping and its free. Dave / NØATHYahoo! Groups Links - Mike Perryman Cavell, Mertz Davis, Inc. [EMAIL PROTECTED] Consulting Engineers http://www.cmdconsulting.com 7839 Ashton Avenue K5JMP Manassas, VA 20109 USA (703) 392-9090; (703) 392-9559 fax; DC Line (202) 332-0110-Yahoo! Groups LinksYahoo! Groups Links* To visit your group on the web, go to:http://groups.yahoo.com/group/Repeater-Builder/* To unsubscribe from this group, send an email to:[EMAIL PROTECTED]* Your use of Yahoo! Groups is subject to:http://docs.yahoo.com/info/terms/ Yahoo! Messenger - Communicate instantly..."Ping" your friends today! Download Messenger Now Yahoo! Groups Links To visit your group on the web, go to:http://groups.yahoo.com/group/Repeater-Builder/ To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
