[1000mp] 1000MP chirp on CW

[Rod Elliott]

Hello Antero...

I had the exact same problem with my MP.  I eventually diagnosed it as rf 
feedback. The problem improved a bit by using clip-on ferrite chokes on the 
leads in and out of the rig.

The problem disappeared completely when I moved to a different QTH where my 
antennas are now much farther away from the shack (50 meters).

I always run my rig on mains power, but I have heard that the MP is more 
sensitive to this problem when DC powered.

Good luck
73
Rod Elliott VE3UW / VE3IRF


At 14:18 11/01/03 +0200, you wrote:

>Hi,
>
>Having a chirp problem with FT1000MP.
>When transmitting with a short hold delay and allowing the
>TX to trip, the beginning of next dash or dit represents a clear chirp.
>However, increasing hold delay time, and having the rig "on the air" allows
>chirp-free signal.
>Since mains voltage is very stable, I first thought there is a voltage drop
>in the DC cables between the rig and power supply, and shortened these to
>minimum. No improvement.
>I suspect one of the oscillators might have a "local energy bank" capacitor
>which doesn't recharge fast enough or cannot hold its charge level. But
>which ????
>
>Has anyone experience a similar problem / how was it fixed ?
>
>Thanks in advance for help.
>
>73,  Antero, OH2BEM
>
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