[600MRG] QRSS CW Keyer

[Dick Bingham]

Hi Frank

Check out the QRP-LABS kits especially the U3S and GPS receiver. This unit
should be in EVERY Hams tool-kit of goodies. ( http://shop.qrp-labs.com/U3S
)

I own three of these units (with GPS.) One unit has allowed me to resurrect
a dead Icom IC-551D that has a unavailable part in the LO circuitry. I use
the U3S to generate the appropriate LO to transmit a WSPR signal at
50.29450MHz and followed immediately by a CW beacon signal at 50.071MHz.
All automatic w/o needing a computer. It recovers from
a power outage w/o any attention from me - pretty neat . . .

The U3S will send QRSS/CW/WSPR/ and many more modes with frequency
uncertainty of less than 1Hz when the GPS
receiver is used. The GPS receiver also allows Grid-Square info to be
automatically inserted in the TX-message for WSPR.

Also check out this website for an interesting design detailing a current
current sampler for antenna work . . .

===> http://w8ji.com/building_a_current_meter.htm

73 Dick w7wkr and wd2xsh-26 at CN98pi   and w7wkr/7 at CN97uj

On Tue, Jan 24, 2017 at 12:41 PM, Frank Lotito <k3dz at live.com> wrote:

> ref:  http://www.kent-engineers.com/codespeed.htm
>
> I am looking for a few Internet references on home brewed circuits, or
> kits which are designed for sending CW at QRSS speeds, e.g., 1,3,10,etc
> seconds per dot.
>
> I do own the Unified Microsystems XT-4B CW Beacon Keyer and MFJ 452
> keyboard keyer.  They are both definitely suitable and reliable for beacon
> keying at speeds of 5 WPM and greater. For my QRSS sending interests I use
> a very old Windows XP laptop running ON7YD's QRS program.  The XT-4B and
> MFJ-452 manufacturers indicate that there is no practical way to S-L-O-W
> D-O-W-N  their products to QRSS speeds.
>
> To streamline my system, I'd like to replace the laptop with a keying
> device suitable for QRSS speeds, whose memory is reprogrammable, but
> non-volatile when the power is turned off, and will auto-start when power
> is turned back on.
>
> Besides a computer running ON7YD's program (and similar QRSS programs)
> what else might be available?  Going back to my college years when digital
> logic circuits were still made from discrete components using mostly
> "hollow-state" devices, I vaguely recall   something called a "ring
> counter" where you could trap a message.  I believe the incremental
> circuits were RST flip-flops...?  That's obscured by the fog of time -
>
> Thanks and 73 Frank K3DZ / WH2XHA
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