[Elecraft] K2 / ESD / Diodes D16 7 D17 replaced

[Ray]

Put them right across the 50 Ohm input.
Break-down was 95 volts. 

If you need Receive protection,
Maybe back to back 1n5711’s 
Conduction at ~0.25 volts………. WA6VAB    


From: Don Wilhelm
Sent: Tuesday, June 29, 2021 11:38 AM
To: Ray; Frank Krozel
Cc: Elecraft Reflector
Subject: Re: [Elecraft] K2 / ESD / Diodes D16 7 D17 replaced

Those NE-2s have a high breakdown level.  OK for vacuum tube equipment, 
but too high for semi-conductors.

73,
Don W3FPR

On 6/29/2021 2:16 PM, Ray wrote:
>
> In the Early days we used a NE-2 for  front end Protection…..
>
> Ray WA6VAB  K3
>
> *From: *Frank Krozel <mailto:kg9hfrank at gmail.com>
> *Sent: *Tuesday, June 29, 2021 9:33 AM
> *To: *don at w3fpr.com <mailto:don at w3fpr.com>
> *Cc: *Elecraft Reflector <mailto:Elecraft at mailman.qth.net>
> *Subject: *Re: [Elecraft] K2 / ESD / Diodes D16 7 D17 replaced
>
> Don as usual “Thank you”
>
>