I had some very nice 3/4" catv 75 ohm line some years ago. It was foam dielectric with a jelly filled outer jacket - nice stuff. I took a hack saw and split the outer shield kind of like peeling a banana, then cleaned out the dielectric, and took a small hammer and drove a PL258 over the center pin after using a small amount of passivating compound on both the center conductor and the outside of the PL258. Then I took a small stainless steel water hose clamp to secure the shield, and skotch coated and taped the mess.
I used this line on a 150 ft water tank UHF repeater behind the M&W Cafe / City of Harker Heights, Texas water tank for over 10 years. The standing wave was not perfect, but the system - UHF Pro with a Wacom Duplexer and ARR Preamp worked very well for many years, until the City decided to de-commission the water tank. Also I used water hose clamps to attach grounding braid top and bottom - again skotch coat and tape and noalox compound sparingly applied. Yep, its better to match impedances, and it makes it easier to avoid desense when you do things 'right', but in reality, I doubt you will see much difference one way or the other - your mileage may vary - back to bed with visions of left over of sugar plumbs going through my head, etc. Steve NU5D [EMAIL PROTECTED] wrote: > At 12/23/2007 23:52, you wrote: > > >> Bob, those 1/12 wave lenths are prety short, I figuerd (in my head) >>
