Monday, August 21, 2006

70mhz

Since the ft-847 has 4m it seemed a shame not to utilise that band also.
EI9GQ designed a 4m aerial for me , I used it a litle in 2005 but this year decided to be a little bit more serious, too late for most of the ES but in time for some I guessed
Measurements for the 70 mhz
4ele aerial are as follows and credit to EI9GQ for this
four-ele
Ref: 2168mm
DE: 2028mm
Dir1:1926mm
Dir2:1926mm
All spacings increased to 0.2WL (854mm).
Gain at 70.2 = 10.14 dBi (about 8 dBd) F/B ratio 17dB

73 Charles



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