Have been using HDR-300 types for years - presently using 6. I thought
I had seen everything break that could but here is a new one...
The upper cast aluminum housing became a hunk of junk! Antenna it was
turning is a 3 ele homebrew full sized 40m-- elements start at 3" and
boom is 5 inch --- so it was turning a bunch. What happened is the
antenna torque was so great that the four bolts holding the rotor to
the rotor plate broke from the housing. The upper housing is cast
aluminum and the first one I have ever seen broken. Anyone else with
I have had all the normal failures electrical and mechanical but this
was a first. Removed and repaired it today.... hope to get it going
tomorrow wx permitting.
This whole thing was caused by pinning the mast to the mast clamp!!!
My opinion is it is better to allow a bit of slippage in high winds than
to have something break!
Antenna is about 25 ft/sq es weight is abt 400 lbs. Just passing this
along to keep anyone from having the same trouble.
FAQ on WWW: http://www.contesting.com/towertalkfaq.html
Administrative requests: towertalk-REQUEST@contesting.com
Sponsored by Akorn Access, Inc & KM9P