[Elecraft] Aux rcv protection, more

[Charles Harpole]

So if the COR activates, it provides very much more

protection, yes or no???  It activates automatically, yes?

In ordinary SSB chat, the COR delay u mention will be a real

problem or a minor problem?

I once burned the contacts off a relay inside my

IC-730 with RF from near by antenna.  So I worry.


Charles Harpole


k4vud at hotmail.com





> CC: elecraft at mailman.qth.net
> From: n6kr at elecraft.com
> Subject: Re: K3 KRX3 - BNC or KAT3?
> Date: Wed, 13 Aug 2008 20:48:39 -0700
> To: k4vud at hotmail.com
>
> Charles Harpole wrote:
>
>> Can I run power with a good receive antenna connected to
>> rcve only input bnc socket without damage anywhere?
>
>
> Yes. We've pumped several watts into the KRX3's aux antenna input
> without any sign of damage. (But anything above about 1 to 2 watts
> measured at the sub's AUX input will activate the carrier-operated
> relay, or COR, which should be avoided because it slows down break-in
> keying receive recovery.)
>
> As long as the receive antenna is a reasonable distance from the
> transmit antenna, the COR won't be activated, and you'll be at a safe
> level. The AUX BNC jack provides somewhat better isolation than the
> KAT3 connector, so it may be the better choice if you're not sure if
> the antennas are far enough apart at the intended power level.
>
> 73,
> Wayne
> N6KR
>
> ---
>
> http://www.elecraft.com
>