[600MRG] QRSS CW Keyer

Tue Jan 24 21:45:34 CST 2017

I agree with Dick the Ultimate series is a great tool for sug generation etc - sporting a  U2, U3 and U3s here for either standalones, or as drivers for 475 or 137kHz Pa's - the latest GPS kit is super quick at lock up and 3 leds mesmorizing :-) - just check the filtering if using the switched lpf bank...

laurence KL7L

Sent from my iPhone

> On Jan 24, 2017, at 4:55 PM, Dick Bingham <dick.bingham at gmail.com> wrote:
> 
> 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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