I will look into that when we get a chance. Thanks for the thought.
Randy
--- In [email protected], "Steve Smith" <[EMAIL PROTECTED]>
wrote:
>
> Randy,
>
> I've experienced problems similar to what you describe on several
MII and found it to be harmonic noise on the ptt (osc 10v) line.
Installing a >10 uh inductor where the line enters the exciter pcb
did wonders for mine. You may also want to install a pair of
inductors on the 12v lines in the PA (at the feed through caps). The
original GE design has this on a number of their PAs.
>
> While, once I did have a spur that required me to move the entire
mobile radio away from another mobile cased unit, I've never had a
desense problem internally between the tx and rx in a mobile. NO6B
may want to revisit his problem MII and look at the ptt line. He may
be pleasantly surprised.
>
> -Steve
> ----- Original Message -----
> From: wb8art
> To: [email protected]
> Sent: Thursday, December 13, 2007 4:44 AM
> Subject: [Repeater-Builder] Re: MastrII Mobil repeater spur
>
>
> Thanks Bob & Paul for the response. Yes it is the unit with the
> compensation line running between all ICOMS. This is kind of
where I
> have been leaning to.. Course the consternation is that its been
> working for a long time without an issue or at least one on that
> freq. It may have just moved to a location to be noticed. I will
> purse it some more and Bob I suspect you maybe ahead of us on
this.
> I have a station I am working on to replace the mobiles so may
not
> worry about this to long.
> Question while on the topic. How do you guys generally connect
the
> controller to a station? Do you get the Molex connectors and
pins or
> what exactly? If so, you have a easy source on and nos. for the
pins
> and plugs?
>
> Thanks Randy
>
>
>
>
> --- In [email protected], "Paul Plack" <pwplack@>
> wrote:
> >
> > Randy,
> >
> > I'm trying to recall...is this a rig where one ICOM has the
> temperature compensation network, and develops a control voltage
> which is then distributed and shared by all the other ICOMs in
the
> radio? If so, and the problem just showed up one day, perhaps
there's
> some RF bypass cap or other component that's failed within the
ICOM
> itself, allowing RF to travel that DC temperature control line.
> >
> > It's been 10 years since my last MII mobile conversion, so the
> memories are somewhat dusty, but I'd try another ICOM to see.
> >
> > 73,
> > Paul, AE4KR
> >
> > ----- Original Message -----
> > From: wb8art
> > To: [email protected]
> > Sent: Wednesday, December 12, 2007 6:06 AM
> > Subject: [Repeater-Builder] MastrII Mobil repeater spur
> >
> >
> > One for the wonderfull experts here. I have been working to
many
> > nights this week to be able to think straight.
> >
> > Our MastrII converted mobil developed a spur problem last
nite.
> Were
> > on 145.43 and the spur was on 145.11. Very strong and subbing
in
> a
> > standy unit produced the same results. The only components
used
> in
> > both are the ICOMs and the stock tone card (used to encode
tone
> > only). The fix was to pull the reciever ICOM (144.83)killing
the
> > local rx. Guys what are your thoughts on this and the
possible
> fix.
> >
> > Randy
> >
>
>
>
>
>
>
>
> Yahoo! Groups Links
>
