[1000mp] Key clicks

Thu, 2 Jan 2003 21:24:39 -0000

Surely there is a local op near Newington who has done the mod or would be
willing to have it done.

> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]]On Behalf Of Hare,Ed, W1RFI
> Sent: Thursday, January 02, 2003 18:30
> To: [email protected]
> Subject: RE: [1000mp] Key clicks
>
>
> If it would be helpful, I could arrange for the ARRL Lab to test
> a modified radio.  I wonder if W8JI could send his here. :-)
>
> 73,
> Ed Hare, W1RFI
> ARRL Lab
> 225 Main St
> Newington, CT 06111
> Tel: 860-594-0318
> Internet: [email protected]
> Web: http://www.arrl.org/tis
>
> > -----Original Message-----
> > From: Pete Smith [mailto:[email protected]]
> > Sent: Thursday, January 02, 2003 7:50 AM
> > To: [email protected]
> > Subject: Re: [1000mp] Key clicks
> >
> >
> > At 07:00 AM 1/2/03 -0500, John L Merrill wrote:
> > >This is from the expanded Mk5 Field ARRL review. The graphs,
> > which I cannot
> > >show you in plain text mode show cw sidebands down 60db 3khz
> > either side of
> > >center freq. The 756 pro did a little better at 70db down.
> >
> > Assuming the ARRL's test is sound, it seems to me that it is
> > critical to
> > know, under the same test conditions, how the various modifications
> > perform.  I was amused to read, in both the MP and Mark 5
> > expanded reports,
> > the judgment that "this radio has excellent keying characteristics,"
> > although the spectrum analyzer test was apparently not done.  No such
> > judgment appears in the Field report, nor is there anything
> > critical said.
> >
> > The test conditions in the Field report seem to be specified
> > in sufficient
> > detail to duplicate them for other radios in the MP series, stock and
> > modified, and for other radios in the same class.  I'll deliver my
> > unmodified Mark 5, if someone nearby (DC/Philadelphia area)
> > wants to do the
> > test, and will arrange to put the spectrum analyzer traces on the
> > web.  Who'll do the same with other radios?
> >
> > 73, Pete N4ZR
> > Happy Holidays
> >
> >
> >
> >
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