[Antennas] Follow up to RE: length of random wire

Mon, 07 Jul 2003 08:52:51 -0700

My experiments awhile back with end feds ended up with this arrangement as 
best for me.

 From the tuner run coax out to where you can put in a ground rod.  Put the 
shield to the rod the wire to another wire.  Go up as high as possible, 
then when going horizontal go the longest distance over ground, make this 2 
wires about 6 inches apart, go as far as possible, then join the 2 wires 
still 6 in apart.  IF about 33ft thats enough,if not take a single wire and 
just go any way but try not back.  Now for a little bit different, put a 
wire on the ground rod, run it under the ground as directly under the 
horizontal wire as possible and about the same length.

Did a good job for me in that limited envirnoment.

Chris opr VE7HCB

At 09:41 AM 2003-07-07 -0400, you wrote:
>As little as 33 feet will be suitable for 40-10M.  The total length of the 
>wire is measured from the end of the tuner.  I would get as much wire up 
>as high as you can.  If you have to make a few angled turns, that will 
>generally be zOK, i.e. it doesn't have to be in a perfectly straight line 
>in one plane.  Don't forget a good ground!  Usually a ground rod or the 
>cold water system is satisfactory (assuming you have metal piping).  You 
>may also need some simple 1/4 wave counterpoises for some or all bands 
>that you're using, if you find that you're having problems with RF in the 
>shack nipping at your lips when you use the microphone or your fingers 
>when you adjust the tuner.  But you should start out without the 
>counterpoises and use them only if it's necessary.
>
>I use end fed random wires routinely when I travel and have had remarkable 
>success with installations that I thought would never "get out."  The 
>better the ground the better things will work.
>
>73, Joe
>
>Hart Engel wrote:
>
>>Sorry about that.
>>
>>I failed to mention its for HF bands [10-80M] on phone operations.
>>
>>>Lets say for now I have a antenna tuner that I can connect a random wire 
>>>too. How long should the wire be if I'm just throwing it on the roof of 
>>>the house? Can't put a dipole up, or wrap a wire around the water troff, 
>>>I live in a semi-detached house. I live in the city and the houses are a 
>>>spit apart. But the roof is 12ft wide by 20ft long any ideas?
>>>
>>>Hart
>>>
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