[TowerTalk] Temporary 160 meter antenna question
RadioIR at charter.net
Fri Aug 4 22:01:46 EDT 2006
For your 1 day option of running an 80 meter dipole on 160, here is a
piece of data for you. Assuming an antenna height of 50 ft, if you are
feeding the dipole with 100 ft of RG8X, loss in the coax on 160 meters
will be approximately 18 dB. For 100 watts in, you get 1.6 watts radiated.
Feeding it as a tee without a good ground will work better, but you will
light up all your equipment. I wouldn't run phone, you may need your
lips for something later.
RLVZ at aol.com wrote:
>For a temporary, 1-night, 160-meter antenna... please advise if there would
>be much difference in performance between the following 2 options:
>1) Load up a 80-m dipole on 160-m by running the RG-8 feedline through an
>antenna tuner. (unbalanced?)
>2) Tie the rig end of the RG-8 coax together (center and shield tied
>together) and run it through the antenna tuner. The only ground available for the an
>tenna tuner/rig will be a couple of ground rods tied to the electric meter
>which is 5' away from the rig.
>It would be quicker for us to go with Option 1 for this 1-night radio
>affair. Neither option is very good but would Option 2 radiate better... perhaps
>some vertical radiation off of the coax?
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