On 9/7/2011 6:28 AM, Nand Kishore wrote: > Hi All, > This my first post here. I live on the top floor of a 14 storey > building. > Got a 3el Steppir with 30/40m addon approx. 40' above my roof. There is > a 80m dipole center suspended from rotor base . > > This 80m dipole is broad sided in NW/SE direction. I have managed to work > ZL8X ,VP8ORK on cw and VE7CC on RTTY. The 80m dipole is approx.fullsize. > > Nandu,
Since you already have a full size 80 meter dipole and since your height above ground is good I would suggest you insert a pair of Unadilla KW-80 traps in that dipole. You will need to lengthen the ends to make it work on 160 but if that is a problem you can zig zag or right angle fold the far ends a bit to make it fit on your roof. These traps have a resonant frequency of 3.625 Mhz so there should not be any negative impact on the 80 meter performance you currently have. I would presume you are in an urban environment so receiving is always a challenge on 160. But the dipole would be a much better bet than any vertical under those circumstance. Good luck...I still need VU2 on 160 even though I have VU7! 73, Herb, KV4FZ _______________________________________________ UR RST IS ... ... ..9 QSB QSB - hw? BK
