[Elecraft] Using A 6 Meter LNA & Amplifier with the K3S

[Don Wilhelm]

John,

I do not understand how the amplifier or the ALC could protect the LNA.
I assume the LNA is only used on receive, so if you have good sequencing 
between receive and transmit, no damage could occur.
ALC is only applicable to transmit, and Elecraft does not recommend 
using ALC to limit the drive to the amplifier.  Set the power to the amp 
properly and all will be well.
Using ALC to control the exciter power is a bad way to do things, it 
will only lead to distortion and spurious emissions from the amplifier.

73,
Don W3FPR

On 9/23/2018 10:58 AM, John Stengrevics wrote:
> My apologies - I should have added that I am using a Downeast Microwave DTR relay to take the LNA out of the line when voltage applied to the relay drops as a result of transmission.
>