and just to make things interesting, I'm thinking of using 75 ohm coax
for my dipoles.
Shaun
web sites:
http://www.myspace.com/blindmanshaunoliver
http://blindman.homelinux.org/~blindman/
skype: brailledude
On 28/03/2008 12:55 PM, the old scribe known as Shaun Oliver was able to
impart this pearl of wisdom:
> the problem with running a long wire is that my back fence is colorbond
> or however you spell it. it's that metal stuff anyways, and that eoulc
> either be a hinderence or a help depending on how I work things.
> I want to put up a dipole but I'm thinking of making two feed off the
> same coax although I'm not quite sure how to do it. I'm going to make
> one for 40 and 80 meters and one that will serve on 15 and 10 meters.
> I shall probably use galvinised pipe to hold the whole thing up. whether
> I want an inverted v configuration or not is the next question I need to
> ask myself.
>
> Shaun
> web sites:
> http://www.myspace.com/blindmanshaunoliver
> http://blindman.homelinux.org/~blindman/
> skype: brailledude
>
>
> On 28/03/2008 12:50 PM, the old scribe known as Colin McDonald was able
> to impart this pearl of wisdom:
>> are you going to run a random wire/long wire, or dipole configuration?
>> You'll need a tuner, or at least, something to test SWR if you run a random
>> wire. If you use the dipole configuration, you can get close enough to
>> resonance by careful measurement of the wire halves.
>> I'm sure you've probably gone over all this since I didn't closely follow
>> all the threads of late.
>> On the top of your house, do you have a chimney, or furnace exhaust outlet,
>> or even a fan vent? If so, you can use rope as an insulator and run the
>> wire from the top of the house down to the furthest point on the fence.
>> Use some 2 inch PVC if you want to get the fence end of the wire up a little
>> higher off the ground.
>> You can use rope, or heavy duty zip ties to secure the PVC to the fence
>> line.
>> If you use a random wire, or long wire, make sure you have some sort of
>> counter poise.....as much wire thrown down on the roof of the house, if that
>> is where you end up running the wire from, as possible.
>> I'm not sure if you have a fully fenced front and back yard or not, but
>> putting a 25 foot chunk of galvanized pipe up at the front corner, and
>> another pipe of similar length up in the back opposite corner would give you
>> a nice run and make it easier to run a dipole instead of an end fend long
>> wire.
>> And, if you have a long enough fence line, a long wire around the entire
>> fence line would probably work not to badly on 75/80 either.
>>
>> 73
>> Colin, V A6BKX
>>
>>
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>
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