[Lowfer] Audio Noise Floor Measurements on my TS450S

[Jordan Arndt]

The 450S has an attenuator that kicks in below 500khz....

73...Jordan...VE6ZT

----- Original Message ----- 
From: "Andy - KU4XR" <ku4xr at yahoo.com>
To: "1750 Meter List" <lowfer at mailman.qth.net>
Sent: Wednesday, March 12, 2014 4:55 PM
Subject: [Lowfer] Audio Noise Floor Measurements on my TS450S


> Hi all:
>
> I " heard  " an increase in volume level  with no antenna connected while 
> changing
> frequency from 188 KHz down to 30 KHz.. The increase was so noticable that 
> it
> caused me to wonder what is really going on with my radio at the edge of 
> its range.
> After being highly disappointed with my efforets to receive Bob - XBA/1 on 
> 29.499 KHz,
> even though it seemed that I was able to receive, The thing that really 
> made me
> suspicious was not seeing a signal trace from Dex - XBA/4 at just over 200 
> miles..
> I did a crude, and very non-labratory standard test today, and found out 
> that my
> radio in essence " goes dead " below 100 KHz.. It gave verifiable reason 
> as to why
> I am unable to receive the weak Experimental signals on VLF. The details 
> of my
> test today are in the attachment for anyone who is interested in reading 
> it..
>
> 73 to all:
>
> Andy - KU4XR


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