K1SIX 11 El. 6M NORTH ANTENNA PICTURES
    The ("North Antenna") six meter array is strong,  simple and effective.  It consists of an eleven element Telrex Model 6M1136 on a 36 foot boom.   This is an older design and has performed very well over the years,  allowing me to work 140 countries (as of 31 May 2001) on six meters.  The spacing and boom length are far from optimum but the mechanical design is excellent and it has survived a very harsh climate of ice and wind as the first photo will reveal.  All elements are 1/2" OD tubing mounted through the boom using 5/8" OD sleeving.  The tapered three section boom utilizes a twelve foot long 2 1/2" OD center section.  All elements are equally spaced at 43 inches.  The 42 pound antenna is mounted approximately 57 feet above ground level on a three section crank-up tower and provides approximately 10.37 dBd gain.  Feedline is 1/2" Andrews Heliax.  A "Tailtwister" T2X rotor provides azimuth control.

 Click here to view information on the SOUTH Antenna

    On 26 January 2002 the 6m system was upgraded  to a FT1000MP Mark V with a Yaesu FTV1000 transverter.  This combination produces 200 watts output in Class AB CW and SSB and 50 watts output Class A SSB when operated barefoot.  When higher power is required,  a step attenuator, which provides better power control,  is used to reduce the 28 MHz IF output of the Mark V by up to 26 dB to provide approximately 50 watts of  drive from the Mark V in Class AB modes (0 dB attenuation is used for Class A ssb) to a pair of 3CX800A7 triodes for up to 1500 watts output Class A SSB/ Class AB CW/SSB and 750 watts output for high duty cycle Class AB WSJT.  The transmitted Class A SSB signal should achieve state of the art bandwidth via greatly reduced odd order distortion products during those periods when my signal may be very strong.  Calibrated (using an RF Millivoltmeter) 6m QRP operations are achieved using the appropriate step attenuation settings with calibration at 3 dB increments down to 100 microwatts (-10 dBm) into the antenna.  A secondary Icom R9000 receiver,  which includes a spectrum scope,  is used as a monitor for propagation indicators, in-band activity, etc.

Click here for Receiver Distribution System and FTV1000 MDS sensitivity tests on 45-50 Mhz
 

    The above photo shows the aftermath of the Great January 1998 ice storm.  This storm caused extensive damage in the Northeastern USA and Canada.  Approximately one inch of solid ice coated everything.  Fortunately,  there were no significant winds and after a little "bending"  the six meter array was back to normal.

Fall 1998 photo showing the repaired North 6M array rising above and to the rear of the garage
 

Dave (K1DAM) on the way down for a cool "Sam Adams"
 

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