[Boatanchors] SB-200 info needed

[Mark K3MSB]

The IC-737 manual can be found at:

http://www.radioamateur.eu/schemi/IC737A_user.pdf

Page 14:  The SEND relay is rated at 16V,  2A.  "If this level is exceeded,
a large external relay must be used".

There is 120 V across the SB-200 relay port;  I'm looking at the schematics.

Do NOT directly hook the SB-200 up to the IC-737;  use a soft start or
external relay as mentioned by others.

Mark K3MSB

On Mon, Sep 13, 2010 at 7:51 PM, Bob Peters <rwpeters at swbell.net> wrote:

> I have not seen an ICOM radio yet that can take the keying on an older
> amp... I always use an AMP keyer even on my Alpha... Not ready to take any
> chances
> On burning out those mini relays and it does happen guys...The MFJ or
> Ameritron Amp Keyers are cheap compared to ICOM service Good insurance...
>
> Bob W1PE
>
> -----Original Message-----
> From: boatanchors-bounces at mailman.qth.net
> [mailto:boatanchors-bounces at mailman.qth.net] On Behalf Of Jim Wiley
> Sent: Monday, September 13, 2010 3:30 PM
> To: Carl
> Cc: boatanchors at mailman.qth.net
> Subject: Re: [Boatanchors] SB-200 info needed
>
> Yes. We're only talking a few tens of milliamperes here.
>
> - Jim
>
>
>
> Carl wrote:
> > Can it handle the current without welding the contacts?
> >
> > Carl
> > KM1H
> >
> >
> > ----- Original Message ----- From: "Jim Wiley" <jwiley at alaska.net>
> > Cc: <boatanchors at mailman.qth.net>
> > Sent: Monday, September 13, 2010 3:30 PM
> > Subject: Re: [Boatanchors] SB-200 info needed
> >
> >
> >>
> >> The ICOM IC-737 uses a relay to supply keying for an external amp.
> >> No special precautions are needed.
> >>
> >>
> >> - Jim, KL7CC
> >>
> >>
> >>
> >> Carl wrote:
> >>> <snip>
> >>
> >>> The relay is 115VDC, absolutely not compatible with most SS xcvrs,
> >>> get an amp keyer interface or install a Soft Key kit from Harbach.
> >>>
> >>> <snip>
> >>
> >>
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