[1000mp] Couple of Quadra Questions

[Adam Farson]

Hi Bill,

Here is the link to the new page "Connecting the Yaesu VL-1000 (Quadra) to
the FT-1000MP/MkV":

<http://www.qsl.net/ab4oj/quadra/interface_mp.html>

Cheers for now, 73,
Adam VA7OJ/AB4OJ


-----Original Message-----
From: FireBrick [mailto:w9ol@billnjudy.com]
Sent: November 16, 2002 14:12
To: Adam Farson
Subject: Re: [1000mp] Couple of Quadra Questions


I'm w9ol
Your welcome to use it as you wish.
Wish I had more to offer.


----- Original Message -----
From: "Adam Farson" <farson@shaw.ca>
To: "FireBrick" <w9ol@billnjudy.com>
Sent: Saturday, November 16, 2002 3:18 PM
Subject: RE: [1000mp] Couple of Quadra Questions


> Hi Bill,
>
> Glad you caught that!
>
> I am planning to convert our reflector correspondence on the Quadra setup
> into a web page entitled "Configuring the Yaesu Quadra for use with an
> FT-1000MP or MkV exciter". Could you e-mail me your callsign? I shall then
> be able to mention you on the page as a contributor.
>
> Cheers for now, 73,
> Adam VA7OJ/AB4OJ
>
>
> -----Original Message-----
> From: FireBrick [mailto:w9ol@billnjudy.com]
> Sent: Saturday, November 16, 2002 11:28
> To: Adam Farson
> Subject: Re: [1000mp] Couple of Quadra Questions
>
>
> Oh boy, Glad you mentioned not to use the Quadra's tuner if using a
outboard
> tuner. I'll need the tuner for 80/40.
>
> Never knew that.
>
> I did perform the ALC adjustments as per the manual.
> Instead of cutting off the phono jack off the BandData2 plug and
installing
> a 1/8" mono jack, I used a female phone to male 1/8" and moved the wire
> inside the Dsub to the proper pin for the MP. This way if I ever sell the
> amp, the cable can be quickly returned to original.
>
> Thanks for your help.
>
>
> ----- Original Message -----
> From: "Adam Farson" <farson@shaw.ca>
> To: "FireBrick" <w9ol@billnjudy.com>
> Sent: Saturday, November 16, 2002 11:44 AM
> Subject: RE: [1000mp] Couple of Quadra Questions
>
>
> > Hi Bill,
> >
> > Glad my input helped you.
> >
> > There are two caveats: 1. The auto-tuner must be disengaged when using
an
> > external tuner. Cascading tuners can reflect high reactance values back
> into
> > the auto-tuner and/or LPF. As a result, dangerously high RF voltages can
> > appear across capacitors in these networks, leading to component
failure.
> >
> > 2. Proper connection and adjustment of the ALC is absolutely mandatory
> when
> > using a solid-state amplifier. The ALC line is the amplifier's first
line
> of
> > defence. Failure to properly configure ALC will place the costly RF
power
> > devices (and other components) at risk of destruction.
> >
> > There is a detailed general discussion of solid-state HF amplifiers on
my
> > site:
> >
> > http://www.qsl.net/ab4oj/quadra/sshfamp.html
> >
> > Cheers for now, 73,
> > Adam VA7OJ/AB4OJ
> >
> >
> >
> >
> > -----Original Message-----
> > From: FireBrick [mailto:w9ol@billnjudy.com]
> > Sent: Saturday, November 16, 2002 02:59
> > To: farson@shaw.ca
> > Subject: Re: [1000mp] Couple of Quadra Questions
> >
> >
> > Thank you, that explained a lot, and did it much clearer than the manual
> > did. Although I read all that in the manual, they should have had a
> section
> > for the MP specifically.
> > The confusion lay with the BandData2 cable mostly.
> > I had already made the changes to the cable, which now obsoletes my
tuner
> > control. Guess I can put that in a drawer. :-)
> >
> > I find it funny that the MP will report a lower swr and tune easily
while
> > the Quadra reports a higher swr for the same freq and may not tune.
> > I have a outboard tuner which I'll use in those extreme cases.
> >
> > ----- Original Message -----
> > From: "Adam Farson" <farson@shaw.ca>
> > To: <1000mp@mailman.qth.net>
> > Sent: Friday, November 15, 2002 11:21 PM
> > Subject: RE: [1000mp] Couple of Quadra Questions
> >
> >
> > > Hi Bill,
> > >
> > > Although the exciter in my HF station is an IC-756Pro, there are some
> > close
> > > parallels. I shall try to address your questions, although I am
> unfamiliar
> > > with the FT-1000MP line.
> > >
> > > 1. The VL-1000 requires at least 80W of drive for correct auto-tuning
or
> > > bandswitching. In the MP, Menu item 4-3 Exciter Drive Power - must be
> set
> > to
> > > MAX. Also, the reflectometer at the auto-tuner output will report a HI
> SWR
> > > error for load SWR > 3:1. There appears to be a slight non-linearity
in
> > the
> > > power/SWR relationship of this reflectometer, so at full power the
> > amplifier
> > > may report a HI SWR error for load SWR > 2.75:1.
> > >
> > > If the tuner appears to run for a few seconds and then stops with an
> ERROR
> > > indication, this is a sign that the exciter is not sending the
amplifier
> a
> > > carrier for tuning. With a Yaesu FT-100MP or MkV as exciter, the
tuning
> > > cycle consists of two processes:
> > >
> > > A.  The "Band Data 1" (4-bit DIN) cable is connected between the
exciter
> > and
> > > amplifier BAND-DATA 1 jacks. The 4-bit code sent to the VL-1000 on the
> > "Band
> > > Data 1" cable sets the bandswitching relays to the band selected on
the
> > > transceiver.
> > >
> > > B. The "Band Data 2" cable (DB15 to RCA) must be connected between the
> > > VL-1000 BAND-DATA 2 jack and the MP's "REMOTE" jack to allow the next
> step
> > > to take place. In addition, Menu item 7-9 on the exciter must be set
to
> > "EL"
> > > (the default value). When you press the [F SET] or [TUNE] button, the
> > > amplifier keys the MP, which in transmits a CW carrier to the
amplifier.
> > The
> > > VL-1000's CPU counts the excitation frequency, and initiates band
> > selection
> > > [F SET] or tuning [TUNE]. When the band-selection or tuning cycle is
> > > complete, the VL-1000 unkeys the MP. The TUNER screen of the VL-1000
> > > displays 'COMPLETE' if tuning is successful.
> > >
> > > When the autotuner has been tuned on a given frequency, the VL-1000
will
> > > memorise the tuner settings. When you tune the exciter to that
frequency
> > > range again, pressing [F SET] will set the tuner to the closest
> memorised
> > > tuning point. This takes less time than a full tuning cycle. (VL-1000
> user
> > > manual, page 7).
> > >
> > > If the "Band Data 2" cable is not connected, pressing [F SET] will
have
> no
> > > effect. Pressing [TUNE] will start the autotuner, but in the absence
of
> a
> > > carrier the tuner will stop almost immediately with an 'ERROR'
display.
> > >
> > > 3. The instructions for connecting the "Band Data 2" cable are on page
4
> > of
> > > the user manual. The reason for the RCA plug is to accommodate non-MP
> > > exciters. For use with an MP, cut off the RCA plug and connect a 3mm
> mono
> > > mini-phone plug as follows:
> > >
> > > Tip to Band Data 2 Pin 9
> > > Sleeve to Band Data 2 Pin 10
> > >
> > > Plug the 3mm plug into the "REMOTE" jack on the MP.
> > >
> > > This will correct the problem of the tuner not responding, as
described
> > > above.
> > >
> > > Incidentally, if the rear-panel "REMOTE" switch is in the ON position,
> the
> > > exciter's POWER switch will power the VL-1000 up and down.  (User
> manual,
> > > page 8).
> > >
> > > 4. The fans in the RF cabinet can cycle on and off, or run
continuously
> at
> > > low speed, depending on ambient. They will speed up when the VL-1000
is
> > > keyed. The fans in the PSU cabinet cycle on and off. (User manual,
page
> > 10).
> > >
> > > 5. I would recommend at least 4 in. of clear space around the top,
sides
> > and
> > > rear panel (if possible), to ensure adequate air-flow. The feet should
> > also
> > > be locked in the elevated position.
> > >
> > > Hope this is helpful.
> > >
> > > Best 73,
> > > Adam, VA7OJ/AB4OJ
> > > North Vancouver, BC, Canada
> > > http://www.qsl.net/ab4oj/
> > > Icom FAQ site:
> > > http://www.qsl.net/icom/
> > >
> > > _______________________________________________
> > > List Moderator: Richard Lubash N1VXW
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