[Repeater-Builder] Re: 6M cans made from other metals

engineering requires serious disclipline... don't deviate from the > laws of physics or you will get your ass kicked. This ain't HF... > > 'nuf said. > Just my [IMG]http://deephousepage.com/smilies/twocents.gif[/IMG] and it is > 3:03 in the morning... need to sleep..

Re: [Repeater-Builder] Re: 6M cans made from other metals

skipp025 wrote: >> <[EMAIL PROTECTED]> wrote: >> The name of the allow used in tuning rods is 'INVAR' >> sb >> > > Mary Jane the shop cat just sent you all a hello via my last > post... jumping up on the keyboard and sending the message > out early with dancing paws on the keyboard. ROFLMAO!

[Repeater-Builder] Re: 6M cans made from other metals

> <[EMAIL PROTECTED]> wrote: > The name of the allow used in tuning rods is 'INVAR' > sb Well... maybe the Mary Jane sent post didn't make it after all. Anyway, let me resend this.. The name of the threaded rod material in many cavities might be Invar but the tune plungers are often made of C

[Repeater-Builder] Re: 6M cans made from other metals

> <[EMAIL PROTECTED]> wrote: > The name of the allow used in tuning rods is 'INVAR' > sb > Mary Jane the shop cat just sent you all a hello via my last post... jumping up on the keyboard and sending the message out early with dancing paws on the keyboard. Anyway... Stainless is sometimes us

Re: [Repeater-Builder] Re: 6M cans made from other metals

I had a set of 220Mhz homebrew duplexers made out of copper pipe that worked better when I did NOT lock down the rod after adjustment. This avoided the problem of the threaded rod pulling the plunger up and down during heating and expansion. As long as you didn't subject the cans to any sharp

Re: [Repeater-Builder] Re: 6M cans made from other metals

Hello Dave, If you really want tears in your eyes, I was in Wacom's Plant a few years ago visiting - they were about 75 km from my home, and they had the entire packaging and testing area filled with 70mhz duplexers - They had a contract to provide duplexers to a European Lottery operator, and the

[Repeater-Builder] Re: 6M cans made from other metals

Hi Steve, I would be very happy to empty the beer barrels of there contents! Seriously though there is a company in the UK that make filters out of barrels but they only work down to about 68MHz due to the lengh. I have a set and they would make an excellent 70MHz duplexer but we don't have 4M

RE: [Repeater-Builder] Re: 6M cans made from other metals

Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] Behalf Of skipp025 Sent: Monday, December 25, 2006 9:21 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: 6M cans made from other metals > "" <[EMAIL PROTECTED]> wrote: > I have bui

RE: [Repeater-Builder] Re: 6M cans made from other metals

ipp025 To: Repeater-Builder@yahoogroups.com Sent: 12/25/2006 8:23:30 PM Subject: [Repeater-Builder] Re: 6M cans made from other metals > "" <[EMAIL PROTECTED]> wrote: > I have built cans in the past and would NEVER do it again. It > is a waste of time. Some people don

Re: [Repeater-Builder] Re: 6M cans made from other metals

http://asuwlink.uwyo.edu/~metal/invar.html

Re: [Repeater-Builder] Re: 6M cans made from other metals

The name of the allow used in tuning rods is 'INVAR' sb

[Repeater-Builder] Re: 6M cans made from other metals

> "" <[EMAIL PROTECTED]> wrote: > I have built cans in the past and would NEVER do it again. It > is a waste of time. Some people don't have great results... > As the metals expand and contract, so does the tuning. The > main tuning rod shafts are the biggest problem. The metal > needs t

Re: [Repeater-Builder] Re: 6M cans made from other metals

n metal is vital. I can assure you, you will never be happy with a home made duplexer. - Original Message - From: Steven Samuel Bosshard \(NU5D\) To: Repeater-Builder@yahoogroups.com Sent: 12/25/2006 7:02:35 PM Subject: Re: [Repeater-Builder] Re: 6M cans made from other metals Jack,

RE: [Repeater-Builder] Re: 6M cans made from other metals

A valid point however most anything that will accept a silver plate is usually aceptable , copper tube is excellent >From: "Eric Lemmon" <[EMAIL PROTECTED]> >Reply-To: Repeater-Builder@yahoogroups.com >To: >Subject: RE: [Repeater-Builder] Re: 6M cans made from oth

RE: [Repeater-Builder] Re: 6M cans made from other metals

Before we get too far into a discussion of what metals *can* be used to fabricate a duplexer, on 6m or on any other band, we should perhaps consider what metals *should* be used for that purpose. If we examine the basic differences between cheap duplexers that drift all over the place and become n

Re: [Repeater-Builder] Re: 6M cans made from other metals

Jack, I believe the British Beer Kegs lack sufficient temperature stability and dynamic range because Budweiser is best at around 34 to 36 deg F, and I understand Guinness never gets much below room temperature, hence the lack of dynamic range may pose an impediment. Maybe an oxygen cylinder us

Re: [Repeater-Builder] Re: 6M cans made from other metals

Other possible cavity materials would be beer kegs or 55 gallon barrels. 73 de Jack - N7OO - Original Message - From: Mike Morris WA6ILQ To: Repeater-Builder@yahoogroups.com Sent: Monday, December 25, 2006 4:43 PM Subject: Re: [Repeater-Builder] Re: 6M cans made from other

Re: [Repeater-Builder] Re: 6M cans made from other metals

You mean something like this? No, I have no details on this. Mike WA6ILQ At 10:15 AM 12/25/06, you wrote: >You're not stuck with using Al-tube... > >Harken back to the day when people did a lot more by hand... > >Some (stil

Re: [Repeater-Builder] Re: 6M cans made from other metals

electric cable out of copper pipe. Chuck WB2EDV - Original Message - From: "skipp025" <[EMAIL PROTECTED]> To: Sent: Monday, December 25, 2006 1:15 PM Subject: [Repeater-Builder] Re: 6M cans made from other metals You're not stuck with using Al-tube... Harken b

[Repeater-Builder] Re: 6M cans made from other metals

You're not stuck with using Al-tube... Harken back to the day when people did a lot more by hand... Some (still unknown to me) Government Agency here in California made a whole bunch of Low-Band Cavities from scratch. Our Highway Patrol and much of the early Government Radio was set up in th