[Elecraft] KPA500 clicking
Richard Solomon
w1ksz at earthlink.net
Mon Dec 29 17:21:57 EST 2014
I looked a copy of the Manual and found only a block diagram. I cannot
imagine
them not supplying a schematic. Maybe it's an oversight ??
73 es HNY, Dick, W1KSZ
On 12/29/2014 2:58 PM, Wes (N7WS) wrote:
> I'm a relatively new owner of a KPA500. I'm also, thanks to the new
> K3 firmware, using QSK for the first time in my ham career.
>
> These two facts have led to me hearing a slight clicking noise
> emanating from the amp that follows the keying. This is unrelated to
> drive or output power, since it happens in the TX Test mode too. I
> understand that PIN diodes are used for RF switching but it still
> sounds like a reed relay to me.
>
> Any explanation? (Hint) Having a schematic would probably make this
> self explanatory.
>
> Wes N7WS
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