[1000mp] Mk V Field, strange behaviour!

[J. C. Mc Laughlin]

Dear Crew:

    A speculation:
One of the significant features of the 1000MP MkV (and almost surely the
Field) is the capability to adjust a fixed time delay between key closure
and RF output.  The major use of this pure delay is to make sure that all
relays in a power amplifier have switched before RF arrives.

    To add to KG7MZ's hypothesis, if one were to add some pure delay the
receiver would have more time to go cold and the problem might go away.
Look for the menu item that sets this delay.  I use more delay than the
factory setting.

    Let us know if this helps.

        73    Mac   N8TT
J.  Mc Laughlin;   Michigan  U.S.A.
Home:  JCM at Power-Net.Net
----- Original Message -----
From: "Dean Fewkes" <kg7mz at mytargets.com>
To: "All about Yaesu 1000mp" <1000mp at mailman.qth.net>
Sent: Sunday, April 10, 2005 6:57 PM
Subject: Re: [1000mp] Mk V Field, strange behaviour!


> Andy,
>
> I have operated 2 Fields and they both did this. The problem was worse
when
> the rigs were cold and just turned on. The problem is that some RF is
still
> present when the rig switches to receive and that triggers the AGC. I
think
> that this is common on most fields in the CW mode and I do not believe
that
> is has been associated with any failures. On my own Field, the problem
went
> away when I installed the roofing filter and the Inrad key click mod. I
did
> the mods at the same time so I cannot say which one corrected the problem.
>
> Dean Fewkes
> KG7MZ
>
>