on the 70' tower
I'll assume a minimum of a 10' mast exposed
at 70.5' 3 or 4 element 20m yagi
at 77.5' 2 element short 40m
at 35 to 40 ft 3 or 4 element 20m yagi same make as above fixed on europe
on the 54' tower again a 10' mast
at 50.5' 3-5 element 10m yagi
at 57' 3-4 element 15m yagi same make as above fixed on europe
at 30' 10m yagi same as above fixed on europe
at 35 to 37' a 15m yagi fixed on europe same make as above
Tower spacing is based on what you want to do.
you could place them in line w/ europe for 80/160m shunt/phasing
but would have max interference from 40-10
or place them broadside to europe at
~1/2 wv on 80m or about 125'. Less will work more is better
Don't over look the option on the 54' tower of using a tribander.
A Pair of TH6DXX stacked would really help w/ multipliers
place them at 60 and 30'
Keep the mono banders on the big tower and fix a second 15M antenna on
side mounted to the tower. at say 60'
Dave the option are plentiful.
you could also place soome small tribander south
good for M2 setup or ms
David Jordan, Pr. Antenna Engineer
> Automotive Telematics and Commercial Antenna
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> -----Original Message-----
> From: email@example.com [SMTP:firstname.lastname@example.org]
> Sent: Thursday, June 12, 2003 10:31 AM
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> Subject: [YCCC] Tower Spacing?
> Hello All,
> I am planning to put up two towers at my new QTH.
> They will be a Tri-Ex LM 354 and a Tri-Ex LM 470.
> I am setting up a M/S contest station
> I'm not sure just what antenna I will be using as yet
> however the LM 470 will have a 2 element 40 meter beam
> and probably a 4 element 20 meter yagi.
> Any suggestions as to good/bad tower spacing??
> Any thoughts on antenna configurations would also be
> very much appreciated.
> Many Thanks in advance and 73, Ted K2QMF
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