[Standard] C5608DA High Power on 2M Problem

[Paul H. Dluehosh]

Bryce,
The problem isn't fixed. It only transmits on low power. Any attempt to
transmit on High power kicks the transmitter off the air after a second or
so. Further pushes of the PTT will not transmit. If the rig is turned off and
then back on, it will transmit again for a second or so on high power and
then it quits again. It is not intermittent, it is very repeatable.

I guess that no one has seen this exact problem so I will have to continue
the troubleshooting.

Thanks, 73,
Paul

Bryce P Rumery wrote:

> Howdy Paul;
>
> Well, it never hurts to ask...  I had a problem with another brand of rig
> brought to me with "intermittent transmit".  Put the rig on the bench
> (basically same setup as yours) and could find no problem.  I even did a
> good slap or two on the mic and the rig to see if I jar anything loose.
> No luck, solid as a rock.  I then returned the rig and asked to inspect
> the vehicle installation.  I found the problem almost immediately.
> First, the power connection was slightly corroded, the PL-259 was badly
> corroded.  The installation was "hook up the wires and lay the rig on the
> floor of the vehicle (great in Maine winters).  I told the owner to clean
> the power connection, install a new coax and PL-259 and get the rig off
> the floor (mount it properly)...  The problem was solved.
>
> Glad to hear your problem is solved.  I've never run into that problem
> with my 5608 (yet), but I'll store away your e-mail for future reference.
>
> 73, Bryce, K1GAX
>
> On Sun, 30 Jan 2005 15:50:39 -0500 "Paul H. Dluehosh" <n4pd at ieee.org>
> writes:
> > Bryce,
> >
> > Thanks for the reply. The rig is on the bench and being fed into a
> > Bird
> > dummy load with a Bird 43 in-line indicating no reflected power.
> >
> > However, just to add some more information as to why the rig is on
> > the
> > bench in the first place, the original problem while the rig was in
> > my car
> > was that on 2m it suddenly would not transmit and it also seemed
> > that the
> > receive level was down. I had this problem before and replaced a pin
> > diode
> > in the output circuitry about a year ago. I have again replaced the
> > pin
> > diode and it is transmitting again, albeit with the problem
> > described in
> > my previous email.
> >
> > It is also my suspicion that the high swr protection circuitry may
> > be
> > contributing to the problem,  which is why I was asking if anyone
> > else had
> > a similar problem and might know how to fix it.
> >
> > I am sending my reply to the reflector in case others reading this
> > may
> > have the same question.
> >
> > Thanks, 73,
> > Paul -- N4PD
> >
> > Bryce P Rumery wrote:
> >
> > > Howdy Paul;
> > >
> > > Just a question.  Does this occur on both an antenna and a dummy
> > load?
> > > Almost sounds like the 5608 is trying to shut down on high power
> > (the
> > > high SWR protective circuit kicking in).
> > >
> > > 73, Bryce, K1GAX
> > >
> > > On Sat, 29 Jan 2005 15:58:54 -0500 "Paul H. Dluehosh"
> > <n4pd at ieee.org>
> > > writes:
> > > > I have a Standard C5608DA 2m/440 FM transceiver that has a
> > problem
> > > > with
> > > > transmitting on the high power position. The rig seems to work
> > ok on
> > > > at
> > > > other power levels 2m and all powers on 440. The symptoms are
> > that
> > > > it
> > > > will transmit for a few seconds at high power and them suddenly
> > > > drop
> > > > out. Turning the transceiver off and waiting for a minute and
> > then
> > > > turning it back on allows it to transmit again on high power,
> > but
> > > > again
> > > > for only a few seconds. Any help will be welcome.
> > > >
> > > > In addition, if anyone has a working C5608DA that they would
> > want
> > > > to
> > > > part with, let me know. I also think that Standard made a 6m,
> > 2m,
> > > > 440
> > > > mobile rig for VHF FM that I might be interested in if anyone
> > had
> > > > one
> > > > they wanted to part with.
> > > >
> > > > Thanks,
> > > > Paul -- N4PD
> > > >
> > > >
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> >
> >
> >
> >