[Elecraft] KPA500 Issue

[Fred Jensen]

Or perhaps OOKPWM?  That was the only available modulating technique for 
spark transmitters.  For all it's apparent simplicity, it is still 
possible to create a rotten signal, and it is notoriously difficult to 
decode ... unless you're a human being.

My modest home station is comprised of only a K3, P3, RemoteRig 
RRC-1258, Winkey, 3 paddles, and one hand key, and the "behind the desk" 
part certainly does not look like "wireless." 😉

73,

Fred ["Skip"] K6DGW
Sparks NV DM09dn
Washoe County

Jim Brown wrote on 4/1/2022 3:06 PM:
> On 4/1/2022 2:35 PM, kevin wrote:
>> It is more accurately referenced as Discontinuous Wave.
>
> Actually, it is 100% amplitude modulation of a carrier by a 
> rectangular wave train. That modulation excites non-linearity in the 
> transmitter signal chain and produce intermodulation distortion that 
> is heard as clicks.
>
> 73, Jim K9YC



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