Robert:
I've always found Molly W0MOM, presidcent of Alpha and her staff to be very
helpful in solving Alpha problems.
Tom, WW5L
--- On Sun, 5/24/09, Robert Pack <nx5m@txcyber.com> wrote:
> From: Robert Pack <nx5m@txcyber.com>
> Subject: Re: [Yaesu] Anyone using MK-V with Alpha 89?
> To: "Robert Carroll" <w2wg@comcast.net>, w2pky@optonline.net, "'Pat Lees'"
> <pclees@charter.net>
> Cc: Yaesu@contesting.com
> Date: Sunday, May 24, 2009, 5:23 PM
> Well, I have discovered that the amp
> tripping issue is not related to the
> FT1000mkV.
> I swapped Alpha 89 amps between the stations that I use on
> 10 and 20 and on
> the mkV there are now no issues with the amp
> tripping.....however, with the
> amp that was connected to the mkV and currently on another
> radio, the same
> issues exist so I will have to call Alpha since this does
> appear to be an
> amp problem.
>
> Thanks for the input guys......still pretty crazy that the
> alc on the mkV
> goes from practically no deflection to top-of/over the alc
> scale with just a
> hairs movement of the mic gain.
>
> Bob
>
> ----- Original Message -----
> From: "Robert Carroll" <w2wg@comcast.net>
> To: <w2pky@optonline.net>;
> "'Pat Lees'" <pclees@charter.net>
> Cc: <Yaesu@contesting.com>
> Sent: Sunday, May 24, 2009 1:18 PM
> Subject: Re: [Yaesu] Anyone using MK-V with Alpha 89?
>
>
> > There was a similar problem in the 1000 MP I
> had. As mentioned here it
> > was
> > a problem on mike keying. I used it with an
> Alpha 89, Alpha 86, and an
> > AL1500 and managed to trip all of them when keying the
> mike. The
> > solution--sort of--was to set the MP max power out
> (via menu) to 50W max.
> > There was still some overshoot on keying the mike, but
> not enough to trip
> > an
> > amp. I had a very early MP and had thought Yaesu
> cleared up the problem
> > in
> > later runs (there was a fix for the problem documented
> by Yaesu). But you
> > may want to try setting the MKV to a lwer limit by
> menu if there is such
> > an
> > item on the MKV.
> >
> > 73
> > Bob W2WG
> >
> > -----Original Message-----
> > From: yaesu-bounces@contesting.com
> [mailto:yaesu-bounces@contesting.com]
>
> > On
> > Behalf Of w2pky@optonline.net
> > Sent: Sunday, May 24, 2009 1:23 PM
> > To: Pat Lees
> > Cc: <Yaesu@contesting.com>
> > Subject: Re: [Yaesu] Anyone using MK-V with Alpha 89?
> >
> > The Mk V has alc action in the IF stages that has a
> slow attack so there
> > is
> > a possibility of spikes especially when the mike is
> keyed with push to
> > talk.
> > I blew out an Ameritron solid state amp with my MK V
> mysteriously. The fix
> > is to lower the IF gain on each band so that there is
> just enough gain in
> > the IF stages to drive the finals to the desired
> output. The down side of
> > this is that the speech processor will not provide
> super punch on the
> > audio;
> > if you like contest audio.
> >
> >>From W8JI website:
> >
> > Transmit Gain Menus
> > The FT-1000
> > MK V has hidden transmit gain menus. They are
> accessed by pushing and
> > holding FAST and LOCK while turning the POWER switch
> on. Both of my MK V's
> > and every MK V serviced here has had the TX IF gain
> set too high. This
> > causes first character clicks on CW and spits and
> splatter on SSB. Here
> > is
> > how to correct the IF gain to prevent ALC clipping on
> leading edges of CW
> > and voice:
> > Press and hold FAST and LOCK before and during initial
> POWER on.
> > Press FAST and
> > ENT at the same time. You are now in the MENU's and
> the display should say
> > "0-1 GrPI-cH".
> > Turn the
> > VRF/MEM CH counter-clockwise to 9-2. The display
> should say "t iF - GA in"
> > This is the transmit IF gain menu.
> > Turn the SUB
> > VFO knob clockwise one position to " t iF -
> 018". This is the 1.8MHz
> > transmit IF gain.
> > Press the
> > ALC/COMP meter selector until the bar graph says
> "ALC". Set RF PWR knob
> > to
> > full power.
> > With the radio on
> > CW and a 50 ohm dummy load connected, close the key
> and adjust the MAIN
> > VFO-A knob until the ALC display is about 75-85% of
> full scale on the
> > illuminated bar marked "ALC".
> > Press the next band button (3.5), make sure the radio
> is still on
> > CW, and turn the SUB VFO-B knob clockwise one band to
> "t iF - 035".
> > Again adjust MAIN
> > VFO-A until ALC is at 75-85% of full scale.
> > Repeat this process through all bands.
> > Most radios I have tested require a setting of 2 to 4
> on TX IF gain, with
> > 3
> > being the most common setting.
> > This change will reduce
> > SSB bandwidth and distortion. It will also reduce
> keyclicks and annoying
> > thumps on the leading edge of each Morse character.
> >
> > Good luck;
> > Bill
> > W2
> > PKY
> >
> >
> >
> >
> > ----- Original Message -----
> > From: Pat Lees
> > Date: Sunday, May 24, 2009 7:32 am
> > Subject: Re: [Yaesu] Anyone using MK-V with Alpha 89?
> > To: Robert Pack
> > Cc: ""
> >
> >> Bob
> >>
> >> In the menu system set the max rf output for the
> mark v for 75
> >> watts
> >> that may stop the amp from tripping. Your probably
> getting a
> >> spike of
> >> high out put when it is first keyed, see if
> lowering the max out
> >> put
> >> per the menu helps.
> >>
> >> Pat
> >>
> >>
> >> On May 23, 2009, at 11:12 PM, "Robert Pack"
> wrote:
> >>
> >> > I am having issues......not sure at this
> point if it is a
> >> radio or
> >> > amp issue but tomorrow I plan to connect this
> particular Alpha
> >> 89 to
> >> > a different radio (990 or 1000D).
> >> >
> >> > The radio mic gain seems to be ultra
> sensitive. At the 9
> >> o'clock
> >> > position the alc is just above the alc
> scale....move it just a
> >> hair
> >> > down and there is practically no alc
> deflection. I have
> >> worked with
> >> > compression as well and cannot seem to find a
> happy medium.
> >> >
> >> > The main problem is that when the alc is
> higher the amp is
> >> faulting
> >> > (Alpha amps will fault into standby for
> several reasons). It
> >> seems
> >> > to fault on certain voice peaks. I do not
> have alc from the
> >> radio
> >> > connected to the amp....tried it and nothing
> good came from it.
> >> >
> >> > I do not know if this is a radio issue or an
> amp issue but
> >> just
> >> > thought I would ask here in the event anyone
> else has had this
> >>
> >> > problem with this particular combination.
> Once I use a
> >> different
> >> > radio tomorrow I should be able to rule out
> one or the other.
> >> >
> >> > Any input is appreciated.
> >> >
> >> > 73,
> >> > Bob NX5M
> >> >
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