[1000mp] MP-1000 Mark-V Field (Thumps/Clicks on Break-In CW) Help here

Sat, 29 Jun 2002 07:07:17 -0700

I haven't been following this thread as my Mark-V doesn't seem to have the
problem, but I do have a question or a suggestion.

I'm assuming that you're hearing these thumps when listening to the sidetone
on headphones though maybe not.  With my previous MP, a DC model, I had
terrible thumps when the power output was more than a few watts, with lots
of thumping at full power.  Since I only experienced it with a pair of Radio
Shack PRO-50MX headphones (with boom microphone and a Heil element) and not
others, I assumed then and now it was RF getting into them.  RF torroids
didn't help.

I didn't have the problem with the same headphones when I had an IC-746 as a
backup radio and don't now have the problem (if I understand it correctly)
with my Mark-V.

Maybe this is far fetched, but I wanted to pass on my experience in case the
fix is as simple as using different headphones.

Jim N7US

----- Original Message -----
From: "Gary Ferdinand W2CS" <[email protected]>
To: <[email protected]>
Sent: Saturday, June 29, 2002 5:46 AM
Subject: RE: [1000mp] MP-1000 Mark-V Field (Thumps/Clicks on Break-In CW)
Help here

> So, I started putzing around with menu settings. In menu setting 7-0
> Abic 2 I heard the thumps louder. I made sure I stayed in Abic 1. Then I
> went to menu 7-4 which is defaulted at 5(ms). The higher I went the
> softer the clicks/thumps were. I ended up at 30 (ms) and now I hardly
> hear any thumps or clicks. I hope this works for you also. I have the
> 400 hz filter in NAR1 and the 250 Hz in NAR 2.
> I would be interested to hear from others to see if this works in
> different models.

Isn't this the transmit delay setting?  (My cheat sheet and I are separated
right now)  If, so, haven't you solved the QSK thump problem by essentially
eliminating whatever QSK the MP has?  At least at higher speeds.  I have an
MP (not MkV). Perhaps 7-4 is different, but the units and their values seem
about right for TX Delay.

73,

Gary W2CS

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