In article ,
"Lynn Coffelt" wrote:

Oh, for gosh sakes, I thought as an "Old Timer", I'd seen or heard of
everything!
I've never seen that bearing froze up!
Thanks for reporting back.

Old Chief Lynn


That really makes no sense Lynn. If the Bearing was froze, the antenna
wouldn't Rotate, and it wuld be evident externally. Now if the Rotory
Joint was froze, the Alignment Keeper on the top of the T/R Pan, would
have to be missing, or broken to allow for the miss-alignment of the two
Flanges. It should only give a very narrow widow of passable RF. Just
a couple of degrees, plus or minus, at each correct alignment.

If the later, is the case, then I am with you, very strange occurance,
indeed.....


Bruce in alaska that would be one for the Books.......




"Sun Dragon" wrote in message
...
Thanks for the replies, I took the scanner unit apart and found the
problem
to be the waveguide coupling bearing was siezed up. Because the waveguide
is
rectangular in shape and oriented with the long dimension fore and aft
produced the target display problem of not seeing targets port and stbd!

thanks again.


"Sun Dragon" wrote in message
...
I have a small Furuno radar where the echo return image is missing on the
left and right portion of the screen. The fore and aft images are fine.

I suspect the "brushes" or slip rings in the scanner unit are worn in
the
2 o clock thru 4 o clock and the 8 o clock thru 10 o clock regions.
Am i correct in this assumption and if so, are kits available to renew
the
contacts in the scanner?

Thanks,

Capt J. Vincent Collins
Master Oceans
F/V Sun Dragon





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