[1000mp] Bad Antenna Relay?

Fri, 31 Oct 2003 15:33:48 +0100

I had exactly the same experience as John on my MP. That was also a cold
joint in my MP also. Repaired in 5 minutes problem gone. 

Unlike the PIN diodes the relays in the MP are of good quality. I doubt that
they could develop faults.

73!

Zoli HA1AG

> -----Original Message-----
> From: John Tait [mailto:[email protected]]
> Sent: Wednesday, October 15, 2003 00:24
> To: [email protected]
> Subject: Re: [1000mp] Bad Antenna Relay?
> 
> 
> 
> 
> Subject: RE: [1000mp] Bad Antenna Relay?
> 
> Perhaps... I was getting an  "hi-SWR" message 
> occasionally...Press the ptt
> and all OK again..
> On RX, it varied from no RX, to low sig strength to (mostly) perfectly
> OK..When it did go quiet, I'd just hit the PTT again, and all would be
> fine...'till the next time..
> I kept blaming bad antenna connections, bad coax links etc..
> 
> John EI7BA
> 
> 
> > Thanks for the hint, John---but would you not expect to see 
> even bigger
> > problems on Transmit with a flaky connection to the output 
> connector? I
> have
> > seen no reports of that!
> >
> > Garry, NI6T
> >
> > -----Original Message-----
> > >From: [email protected]
> > [mailto:[email protected]]On Behalf Of John Tait
> > Sent: Tuesday, October 14, 2003 11:19 AM
> > To: [email protected]
> > Subject: Re: [1000mp] Bad Antenna Relay?
> >
> >
> >
> >
> > Subject: Re: [1000mp] Bad Antenna Relay?
> >
> > I don't know if the MK V antenna connections are like the 
> MP... If so,
> > check the wire connection from your SO239 antenna sockets 
> to the PCB..
> > They have a nasty habit of breaking the solder joint on the 
> PCB, creating
> >  an intermittant connection, just like a "sticky" relay.
> > The SO239 mounting plate is not screwed to  the main back panel, and
> > flexes inwards when you push home the PL259 plugs.
> > This can break the solder joint....It's a good idea to 
> replace the stiff
> > wire
> > from the SO239 with a multistrand(and therefore flexible) wire.
> >  This is a very common problem on FT1000MPs..
> >      GL es 73
> >                       John EI7BA  http://www.iol.ie/~bravo/
> >
> >
> > > Paul Franson wrote:
> > >
> > > > I've got an MP MARK-V - for a while when using antenna 
> A the receiver
> > > > sensitivity would be way down when switching from xmit 
> to receive.
> > > > Hitting the MOX button once or twice would fix it.  Now 
> it's doing it
> > > > on antenna B also - guess I'll have to fix it.  I'd 
> guess it's a relay
> > > > with dirty contacts - right?  Where is it?
> > > >
> > > > Thanks for any tips
> > > >
> > > > Paul  W2LE
> > >
> > > Oddly enough, I have experienced a similar problem over 
> the past few
> > > days and was just resigning myself to having to dig into 
> the rig when I
> > > discovered I had mistakenly twiddled the squelch control 
> when I planned
> > > to adjust the monitor level.  Now I have restored the 
> squelch control to
> > > its fully CCW position the problem has gone away.
> > >
> > > I'm sure that won't be what you fellows have done but I'm 
> happy to bare
> > > my backside just in case!
> > >
> > > 73
> > >
> > > Bob, 5B4AGN
> > >
> > >
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> >
> >
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> 
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