[1000mp] S Meter linearity and rx sensitivity

[W3JXP]

Hi all:

I'm doing the exact same thing with my M5 field. It's interesting that I see 
the exact same readings on my radio.

John Passaneau W3JXP
State College Pa.
W3JXP at adelphia.net

----- Original Message ----- 
From: "Ron Kenwood" <rakenwood at comcast.net>
To: "All about Yaesu 1000mp" <1000mp at mailman.qth.net>
Sent: Friday, February 04, 2005 3:05 PM
Subject: [1000mp] S Meter linearity and rx sensitivity


I am playing with my new Elecaft XG1 on my original MP. The 50 microvolt 
signal produces S9+one red bar.
The 1 microvolt signal is clearly discernable with no S meter reading. Is 
this typical for an MP?

I used the front panel attenuator to crank in 18 db of attenuation. Dropped 
the 50 microvolt signal to S3. That would make it less than 3 db per S unit 
if my shaky math is right. Again, is this typical for an MP?

I then switched to the 1 microvolt signal and again cranked in 18 db of 
attenuation. Signal is faint but definitely there. Does this represent 
reasonable sensitivity for an MP?

 Can I trust the attenuator levels?

Or am I trying to draw unwarranted conclusions from insufficient 
information?


Ron K.
W3ZV
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