I used it for several years with no issue to the Corsair, the SB-220
and all my reports were of clean easy copy CW using a Ham Keyer (not
the Corsair II built in keyer)
The Measures QSK design is to me, perfect.
Gary
KA1J
> The Measures relay speed-up circuit will certainly make the relays close
> faster, but how does that affect the settling time? Won;t that still be
> an issue?
>
> Kim N5OP
>
> On 3/20/2014 10:51 AM, Rick - DJ0IP / NJ0IP wrote:
> > It's not quite that simple, at least not always.
> >
> > "IF" your amplifier has a very fast T/R relay, such as a vacuum relay, then
> > you are correct; a few simple switching transistors and a tiny relay will do
> > the trick. But that only works when the main T/R relay is fast enough to
> > follow CW keying.
> >
> > If instead you have an amplifier whose T/R relay needs 20 mS to switch, AND
> > you connect the hand-shaking just as the Ten-Tec keying loop normally works,
> > the CW is not going to be very smooth. Timing will get screwed up. The
> > open-frame relays are just too slow to do that. The only way to make them
> > work is to have hang delay such that they don't need to follow the keying.
> > The Ten-Tec hand-shaking does not do this.
> >
> > And then if you have to work with hang delay, you don't need the complexity
> > of the hand-shaking. You just need sufficient pre-dit delay and adjustable
> > hang delay - but you sacrifice true QSK.
> > TRUE QSK?
> > You never had it in the first place because you did not buy a QSK amplifier!
> >
> > No matter what you feed a mule or how you treat it, it will never be a race
> > horse!
> >
> > (On the other hand, not everybody needs or wants a race horse and mules are
> > wonderful animals!)
> >
> > 73 - Rick, DJ0IP
> > (Nr. Frankfurt am Main)
> >
> > -------------------------
> > -----Original Message-----
> > From: TenTec [mailto:tentec-bounces@contesting.com] On Behalf Of
> > bcarling@cfl.rr.com
> > Subject: Re: [TenTec] QSK or not?
> >
> > I have to wonder why some guys will spend $500 for an external accessory to
> > do QSK with their linear amplifier. The system in my TT 422 is so simple. A
> > couple of simple boards and a relay.
> >
> >
> >
> > _______________________________________________
> > TenTec mailing list
> > TenTec@contesting.com
> > http://lists.contesting.com/mailman/listinfo/tentec
> >
>
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