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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.
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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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