[1000mp] Mark V high SWR with amp

[Jeff Maass]

Don't forget:

  "and, if the tuner in the MK5 is turned OFF...

73,

Jeff Maass  K8ND
 

> -----Original Message-----
> From: 1000mp-bounces at mailman.qth.net
> [mailto:1000mp-bounces at mailman.qth.net]On Behalf Of Gene Davies AA6NP
> Sent: Sunday, February 06, 2005 12:13 PM
> To: All about Yaesu 1000mp
> Subject: Re: [1000mp] Mark V high SWR with amp
> 
> 
> Well it seems that
> 
> If the output swr at the amp or tuner output is ok
> and....
> 
> If the MK5 shows a normal swr when the amp is in
> standby or bypassed...
> 
> Then the problem has to be in the amplifier input.
> 
> 
> Try switching radios if you can, and check if
> another rig also sees this high swr.
> 
> 
> 
> GL 73,
> Gene
> 
> 
> 
> 
> 
> 
> ----- Original Message -----
> From: Michael W Elliott <kq0b at sbcglobal.net>
> To: All about Yaesu 1000mp
> <1000mp at mailman.qth.net>
> Sent: Sunday, February 06, 2005 8:41 AM
> Subject: Re: [1000mp] Mark V high SWR with amp
> 
> 
> > Well let me replay the descriptiomn.
> >
> > The amps are Alpha 99 and Alpha 89.
> >
> > These are modern amps.
> >
> > Next:
> >
> > The swr on the out meters of a Bird and Nye
> Viking Tuner show output swr fine.
> >
> > Swr on amplifier says ok
> >
> > SWR when running barefoot no problem on the rig.
> > Once I switch on the amp the problem occurs.
> Seems like there is a mismatch back to the input
> side althought the output side says everything is
> ok.
> >
> > I will call Yaesu on Monday and describe the
> situation.
> >
> > Only other thing  I can think of is NKE Viking
> tuner being in line.  Gonna take it out of line
> and run and see what happens.  Would sound strange
> if the tuner but could be possible.
> >
> > Mike
> >
> > Gene Davies AA6NP <aa6np at mind.net> wrote:
> > It sounds like you are saying that your set-up
> WAS
> > working fine, but now you have a high swr when
> > running with your amp. Try inserting an swr
> meter
> > between the two to verify the reading on your
> MK5.
> > If the reading is high, there is a problem with
> > the amp. It could be a problem with the amp's
> > input circuit (tuned or broadband), this is not
> > likely though.. It could also be a bad tube in
> the
> > amp. Also check the transmit/rcv relay in the
> amp.
> >
> > 73,
> > Gene
> >
> >
> >
> > ----- Original Message -----
> > From:
> > To: <1000mp at mailman.qth.net>
> > Sent: Sunday, February 06, 2005 7:37 AM
> > Subject: Re: [1000mp] Mark V high SWR with amp
> >
> >
> > > In a message dated 2/5/2005 7:33:35 PM Central
> > Standard Time,
> > > kq0b at sbcglobal.net writes:
> > > I have started to notice a high swr reading on
> > the
> > > input side (transceiver) while running with
> amp.
> > > Hello,
> > >
> > > Your problem is due to the fact that your
> > amplifier does not have a tuned
> > > input circuit. A modern amplifier that is
> > designed to work with modern solid
> > > state trasnceivers has a tuned input circuit
> for
> > each band the amplifier
> > > functions on.
> > >
> > > You can simply use the internal antenna tuner
> to
> > match the radio to the
> > > amplifier, you may need to retune the
> amplifier
> > slightly after you auto tune the
> > > radio.
> > >
> > > Enjoy and 73
> > > Douglas
> > >
> >
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> > >
> >
> >
> >
> >
> >
> >
> >
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> >
> > Michael W. Elliott
> > THE INSIDE ADVANTAGE -
> > RETIREMENT - LEISURE, REST and ONLY ELECTRONIC
> MAIL PAYMENTS
> > Servant to Bridgett, Collin and all my Creditors
> > St. Louis County Missouri
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> 
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