[Elecraft] [K3] Noise blanker insertion loss

[Wes Stewart]

Thanks Lyle,

I put my stepped attenuator in the line between the K3 and the XG2 and checked the S-meter.  The way I had it calibrated, a 3dB step took it from S9 down to S8.  I re-calibrated the S-meter offset until the meter read S9 and a 6dB step was required to take it to S8.  (Offset value went from 22 down to 20)

Now I don't see an S-unit of change with the blanker in and out and using your method, I read 2.8 dB of insertion loss.  Higher than yours but not quite as troublesome.

Regards,

Wes  N7WS

--- On Sun, 1/31/10, Lyle Johnson <kk7p at wavecable.com> wrote:

From: Lyle Johnson <kk7p at wavecable.com>
Subject: Re: [Elecraft] [K3] Noise blanker insertion loss
To: "Wes Stewart" <n7ws at yahoo.com>
Cc: elecraft at mailman.qth.net, "IIIEdward Dickinson" <softblue at windstream.net>
Date: Sunday, January 31, 2010, 5:31 PM


> I just noted that my noise blanker has an S-unit of insertion loss.

I measure 2.0 dB (AGC OFF, using AFV/dBV internal functions and monitoring a steady nominal S5 carrier on 6 meters).

73,

Lyle KK7P