[Yaesu] FT-900 RFI

Thu, 24 Jan 2002 10:03:21 -0500

Had the same problem when using a random wire ant. directly out the back of
the ant. coupler years ago.  Microphone had coiled wire.  Shoved large
ferrite rod from old AM radio antenna into coiled cord and problem
disappeared.  Perhaps the clamp on ferrites you can get from Radio Shack et
al might work.  Can't hurt to try it.

----- Original Message -----
From: "Hans Olofsson" <[email protected]>
To: <[email protected]>
Sent: Thursday, January 24, 2002 9:46 AM
Subject: [Yaesu] FT-900 RFI

> Hello all Yaesu fans,
> My FT-900 is very sensitive to RF feed back through the mic. When I use
> my Antenna coupler obviosly RF radiates "uncontrolled" sometimes...
> Connecting a mic to the connector on the front will then reslut in RF
> problems. If I disconnect the mic and transmit CW or PSK31 connected to
> the AFSK input connectors on the back panel the RFI is gone. I am
> currently unable to work SSB so I wonder if this is a common and well
> known problem for the FT-900 and most importantly does anybody know of
> a (simple) way of fixing it or seen it described somewhere?
>
> 73's
>
> SM0OMO -Hans
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