[Elecraft] K4 RX overload protection

[E.H. Russell]

Excellent.

Thanks,
ED / W2RF




-----Original Message-----
From: Wayne Burdick <n6kr at elecraft.com> 
Sent: Thursday, October 22, 2020 11:01 AM
To: E.H. Russell <ehr at qrv.com>
Cc: Elecraft Reflector <Elecraft at mailman.qth.net>
Subject: Re: [Elecraft] K4 RX overload protection

Hi Ed,

Each of the K4's receivers has a fast-acting Carrier Operated Relay (COR)
that activates between +20 and +25 dBm. When the COR triggers, it
disconnects all active circuitry of the associated receiver from the
antenna. COR hold time is programmable.

For signals that are below COR level but still extremely strong, the K4 can
automatically (at the user's option) adjust receiver front-end gain to
optimize dynamic range.

73,
Wayne
N6KR


> On Oct 22, 2020, at 4:51 AM, E.H. Russell <ehr at qrv.com> wrote:
> 
> Does the K4 have internal RX overload protection. If not, what RF 
> level can it tolerate?
> 
> TKS,
> 73 ED W2RF
> 
> 
> 
> 
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