[1000mp] Mk V Field, strange behaviour!

[Art Searle W2NRA]

Hi Andy,

For what it's worth I have not notice the behavior you described.  I 
just tested to make sure and in QSK mode I get an instant 0 S meter 
reading in between code elements.  I do get very slight noise between 
code elements through headphones and even less through the speaker but 
I've heard that is normal with these rigs.  I even tried with CW filters 
turned off.  The serial # is 2H070406 and I got it on 12/30/2003 and 
only 2,211 Qs on the clock.

73,
Art
W2NRA

Andy Hamon wrote:
> Can anyone shed some light on a problem I have with my MkV Field???
> As I am on my second Field in six months and both behaved the same, is it a
> design "issue" or am I unlucky to have had two Duds?
>  
> Here's the situation:
>  
> When I use CW, 90% of the time, the S meter fires across to 60 over 9 when
> the radio switches from TX to RX. Not a lot of fun if I am using full
> break-in.
> After various discussions with Yaesu, the message seemed to be "that is just
> the way it is".
>  
> As a "lab" test I hooked up a dummy load and pressed the MOX switch without
> sending any code. No CW and no power out on the meter. When I  pressed the
> MOX switch again the radio went back to receive and the S meter showed S9,
> dropping to zero over time, typically half a second with fast AGC and two to
> three seconds on slow AGC. On slow AGC the background noise seemed a bit
> attenuated immediately the radio switched to RX and came back to full
> strength as the S meter dropped to zero.
>  
> I even tried a full CPU reset, but all that did was to give me half an
> hour's work setting the radio up again!
>  
> Any idea what is going on and if there is a mod to fix it?????
>  
> I have spoken to various users of the Field who say the Inrad roofing filter
> did wonders for the clicks & pops etc. I have one but have not fitted it in
> case I get the Yaesu line " the problem has been created by modifying the
> radio, warranty void".
>  
> Can anyone help.
>  
> Incidentally, if the AGC is switched OFF the problem does not exist, but
> strong signals sound BAD (as you would expect) and on SSB the problem does
> not exist.
>  
> Thanks
>  
> Andy, GU4WTN
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