[NLRS] Working memory keyer for sale?

[Dr. Gerald N. Johnson]

Tehre was a paper at CSVHF probably a decade ago about using a PIC chip 
custom programmed for a beacon keyer. Makes the message relatively 
fixed, but cheap and simple.The circuit board was about 3/4" x 1" with 
through hole parts.

In any case protect the keyer with a sturdy zener diode on the supply 
wire and on the keying output so it can't see over voltage or reversed 
polarity for longer life at the beacon site.

73, Jerry, K0CQ

On 10/5/2015 10:30 AM, Jon Platt wrote:
>
>
>
> Carl,
>
> Check out the XT-4 beacon keyer for $30 at
> http://www.unifiedmicro.com/beacon.html
>
> Also K1EL makes good stuff.   Check out their K16 for around $8 for the chip or $20 for the kit at
> http://k1el.tripod.com/K16.html
>
>
> 73, Jon
> W0ZQ
>
>
>
> -----Original Message-----
> From: Karl Heil<towers at mhtc.net>
> To: nlrs<nlrs at mailman.qth.net>
> Sent: Mon, Oct 5, 2015 10:23 am
> Subject: [NLRS] Working memory keyer for sale?
>
>
>
>
>
> Does anyone have a working MFJ memory keyer that they would like to sell?  My
> old MFJ-492 memory keyer, used for my 2 mtr beacon, was taken out by lightning
> several months ago.  Since that time I purchased one used 492 (didn’t work), and
> I am now returning my 3rd (and final) new 492 to DX engineering.  All three of
> them are defective.  I talked to DX Customer Support and sounds like they
> probably are no longer going to be carrying the 492 since they have experienced
> a very high rate of return/defective on the units.
>
> My 15 (?) year old one
> worked fine, but apparently the QC is now non-existent.  So, if you have a
> memory keyer that works  and you no longer are using it, I’d love to purchase it
> so I can get my beacon back on the air.
>
> 73,
> Karl
> WD9BGA
> EN53
>
> 608-924-1447
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