You mean something like this? <http://www.repeater-builder.com/antenna/fire-extinguisher-duplexer.jpg>
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 (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 the >42-46 MHz range. I've seen probably 50 plus of the mentioned home >brew "stove pipe" cavities in various locations. Someone figured >out that standard galvanized stove pipe 1-ft diameter would work >for the ap... and it does quite well. >I have a number of these masse-built home-brew cavities bought >surplus and they perform similar to same size commercial units. >The cavity end sections were soldered on and braced with sections >of angle iron. So you are not stuck using Al-tube... > >We now have a dual-wall stove pipe regulation so finding the >older style single-wall stove pipe is a bit more fun... but I've >eyed heating and air conditioning contractor materials in various >supply stores... even a metal garbage can might work for your >needs as done in the past magazine articles. > >If you don't have the money... get creative... > >cheers, >skipp > > > "dave_g7uzn" <[EMAIL PROTECTED]> wrote: > > Hi Chuck, I did make some enquiries about the price of the > > ali tubing but gave up when 4 lenghs of 8" diameter tubing > > alone was £750 (about $1500) Then there is all the insides > > and engineering costs! I'm prepared to pay $1000 for a good > > set of cans. > > Cheers Dave UZN > > > > > > > "Barry C'" <atec77@> wrote: > > > I wish you would price the making of , as said previously I > > > have done it at a fraction of used or new and for 6m I doubt > > > you will have any luck to hop to it and start building . > > > > > > >From: "dave_g7uzn" <dave_g7uzn@> > > > >Thanks for the link Chuck...I have seen it before but the > > > > irrigation pipe is plastic in the UK! and to buy the raw > > > > materials new would cost more than a second hand set > > > > INCLUDING shipping. > > > > Cheers Dave UZN > > > > > > >Yahoo! Groups Links > > >
