RE: LF: VLF/ULF activity weekend 21th/22th

[<hvanesce@comcast.net>]

Hello Paul,

Does your sferic blanker fill the gap with zeros, or with interpolated values, 
or does it eliminate the gap? Or other? 

I have been planning to make a Matlab impulse post-processor that fills with 
interpolated values for use in noisy locations; wondered if the SpecLab sferic 
blanker already interpolates.

73,

Jim AA5BW
  

-----Original Message-----
From: owner-rsgb_lf_group@blacksheep.org 
[mailto:owner-rsgb_lf_group@blacksheep.org] On Behalf Of Paul Nicholson
Sent: Thursday, January 19, 2017 4:54 PM
To: rsgb_lf_group@blacksheep.org
Subject: Re: LF: VLF/ULF activity weekend 21th/22th


Looks good Stefan.  I'll be looking for your signals.

I assume the daily 100 character 5170 transmissions will be off until Monday.

Currently I'm testing some changes to the sferic blanker.
I can't really improve on the settings I've been using for years at 8270 but at 
lower frequencies it is possible to gain up to an extra 2dB.  I mentioned the 
other day about the use of a separate channel for triggering. Also I've altered 
the noise floor tracking, using an asymmetric time constant to good effect.

--
Paul Nicholson
--