Well, I found one band data plug in my spare plugs and wired up the one that
went really bad last week to key from the band data jack, works just fine
with the hf-2500. now I could use 4 more plugs, the pin arrangement looks
unique on those, not really circular. Is there a standard din replacement
somewhere, or does Yaesu or someone else stock them?
David Robbins K1TTT
e-mail: mailto:k1ttt@arrl.net
web: http://www.k1ttt.net
AR-Cluster node: 145.69MHz or telnet://dxc.k1ttt.net
> -----Original Message-----
> From: yaesu-bounces@contesting.com [mailto:yaesu-bounces@contesting.com]
> On Behalf Of David Robbins K1TTT
> Sent: Tuesday, November 18, 2008 22:24
> To: Yaesu@contesting.com
> Subject: Re: [Yaesu] mp amp keying?
>
> I can understand it when driving a 100v keying line, but these hf-2500
> amps
> use either 12v or 24v depending on vintage and about 75ma drain. Not a
> very
> hefty current even for those little relays.
>
> What does that arb-704 plug into? The relay output or the band data jack
> or
> something else??
>
>
> David Robbins K1TTT
> e-mail: mailto:k1ttt@arrl.net
> web: http://www.k1ttt.net
> AR-Cluster node: 145.69MHz or telnet://dxc.k1ttt.net
>
>
> > -----Original Message-----
> > From: yaesu-bounces@contesting.com [mailto:yaesu-bounces@contesting.com]
> > On Behalf Of G4GED Dave
> > Sent: Tuesday, November 18, 2008 06:32
> > To: Yaesu@contesting.com
> > Subject: Re: [Yaesu] mp amp keying?
> >
> > Yes, and a cheaper alternative is the N0XAS "Universal Keying Adapter 2"
> > kit, which gives optical isolation between rig and amp on the keying
> line.
> > My IC-750Pro used to suffer from "sticky" c/o relays when driving my old
> > TL-922 amp 'cos that has 100V on the interface c/o line!
> > I use the UKA-2 now for all my Rig-to-Amp interfaces for peace of mind.
> >
> > Google for HamGadgets.com or N0XAS
> > BTW, I have no connection with this firm, just singing praises where I
> > think
> > due!
> >
> > 73 Dave
> >
> > ----- Original Message -----
> > From: "Scott Manthe" <n9aa@arrl.net>
> > To: <Yaesu@contesting.com>
> > Sent: Tuesday, November 18, 2008 5:35 AM
> > Subject: Re: [Yaesu] mp amp keying?
> >
> >
> > >I use an Ameritron ARB-704 amp interface. It costs less than shipping
> > > the FT-1000MP in for service, which is pretty cheap protection for any
> > > number of amp/radio interfacing problems. Not nearly as sexy as the
> band
> > > data jack, but I don't worry about popping any transistors or getting
> > > sticky relays.
> > >
> > > Scott, N9AA
> > >
> > >
> > > K1TTT wrote:
> > >> I have had several mp's develop sticky amp keying relays. This is
> now
> > my
> > >> most common reason to have them serviced and would like to avoid this
> > if
> > >> possible. I see the band data jack has a tx ground through a 2n3444
> > >> transistor which is rated at 60v and 1a, with my hf-2500 amps and a
> > >> small
> > >> relay that locks out the antenna switching I measure either 12v or
> 20v
> > at
> > >> about 75ma, so it seems that transistor should be more than enough.
> > Does
> > >> anyone use that band data output for amp keying?
> > >>
> > >>
> > >> David Robbins K1TTT
> > >> e-mail: mailto:k1ttt@arrl.net
> > >> web: http://www.k1ttt.net
> > >> AR-Cluster node: 145.69MHz or telnet://dxc.k1ttt.ne
> > >>
> > > _______________________________________________
> > > Yaesu mailing list
> > > Yaesu@contesting.com
> > > http://lists.contesting.com/mailman/listinfo/yaesu
> > >
> >
> > _______________________________________________
> > Yaesu mailing list
> > Yaesu@contesting.com
> > http://lists.contesting.com/mailman/listinfo/yaesu
>
>
>
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