[Yaesu] ft890 birdies?

[Cecil]

Disconnect the antenna....do they go away?  If so they are real...if not they are internal birdies.

Could be external intermod products...signals mixing in the air at a non-linear junction...such as a rusty tower bolt or the like.  Very difficult to find.

Cecil
K5DL

Sent from my iPad

On Jul 22, 2013, at 8:40 PM, Michael Tortorella <w2iy at verizon.net> wrote:

> Gang,
> I am consistently hearing a carrier on approximately 7.030, 14.030, 21.022, and a couple of others. I don' have access to another receiver now so I can't check if these are real or mixing products in the 890. Does anyone know if these are known mixing products or real signals? The one on 20 mtrs sounds like it's pulse modulated, another of those OTH radars?
> Thanks and 73
> Mike W2IY
> 
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