[VHFcontesting] Transverter interfacing with FT290RII

[Zack Widup]

I have been using mine in a similar manner, but I thought someone might
offer a better way to do it.

I don't use the FT290RII as an IF rig too often. But as I have it wired,
when working CW I have to hold down the mic button with one hand while
sending CW with the other hand. It's a bit unwieldy.

73, Zack W9SZ


On Tue, Feb 13, 2018 at 11:23 PM, Sean Waite <waisean at gmail.com> wrote:

> Thanks for the responses! I got a few good ideas here. I'm not entirely
> certain why it never occurred to me to pull the Push To Talk signal off of
> the thing you push...to talk. Way easier than trying to tap the board.
>
> I have some reading and building to do. Hopefully I'll be up on 7 bands
> (Dare I say...hopefully 8? If I can pull together the scratch for 13cm) by
> June.
>
> Either way, looking forward to getting this all working smoothly.
>
> 73,
> Sean WA1TE
>
> On Tue, Feb 13, 2018 at 11:52 AM Michael Kana <aa9il at sbcglobal.net> wrote:
>
> > Hi Sean
> > I use an FT290mk2 with a sequencer. I use the 4th relay to close the PTT
> > and key line and plug the key and mic into a “control box” where the
> > sequencer relay is in line. I have the key and mic cables run to the
> radio.
> > I flip a switch to sequence and when the fourth relay closes, the key and
> > PTT lines are closed so I can then key or transmit.
> > When done, flip the switch off, and the key and PTT lines are
> > disconnected. I will never Key the radio until the sequencer is switched
> > unless I intentionally bypass this scheme and plug into the radio direct.
> > 73 Mike
> >
> > Warning!  This is transmitted over a non secure medium
> >
> > > On Feb 13, 2018, at 10:38 AM, Sean Waite <waisean at gmail.com> wrote:
> > >
> > > I've got one of the old FT290RII 2m all modes that I'm using as the IF
> on
> > > my transverters. With the SG Lab devices, I can select between RF sense
> > > switching and PTT switching, but I now have a DEMI 3cm transverter that
> > > requries a real PTT line. The radio has the 25W amp that I'm not using
> > for
> > > these purposes, I just set the radio to low power (2.5W). What I'd like
> > to
> > > know is if anyone has a clever method of getting the PTT off of the
> > radio.
> > > The plug for the amp has PTT on it, I believe, and the amp isn't
> required
> > > for operation. The problem with leaving the amp off to access this plug
> > is
> > > that then there are just 2 little spring tabs for power on the back,
> > which
> > > makes it difficult to get power to the radio.
> > >
> > > I could just tap the IF circuit for the amp inside the radio, but I
> > wasn't
> > > sure if there was a less invasive option.
> > >
> > > At some point I'd like to dig up the FBA-8 battery boxes for my 290 and
> > > 790riis, but they appear to be kind of hard to find. It would make it
> > less
> > > likely to accidentally dump 25W into a transverter.
> > >
> > > Thanks and 73,
> > > Sean WA1TE
> > > _______________________________________________
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> > > VHFcontesting at contesting.com
> > > http://lists.contesting.com/mailman/listinfo/vhfcontesting
> >
> >
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