My FT950 already comes with a TCXO.  I doubt it will make much difference 
for CW.  You might try measuring the frequency of WWV on 10 to 25 MHz and 
see if it changes much with warmup or a cold start.  One way to get down to 
1 or 2 HZ is to misadjust the passband tuning so that you can hear the 500 
or 600 HZ tone on upper and lower sideband simultaneously and have them beat 
against each other.



Lloyd Rasmussen, Kensington, MD
http://lras.home.sprynet.com
-----Original Message----- 
From: Tom Behler
Sent: Saturday, September 27, 2014 11:50 AM
To: [log in to unmask]
Subject: TCXO Module For TS590

Hello, everyone.

I know this will be a matter of opinion, but is the TCXO crucial for someone
like me who does a lot of CW operating?  I realize that is probably more
essential for other HF digital modes, but those modes are not of interest to
me.

The question is simply on my mind lately, due to some recent discussion on
both this list, and the TS590 Yahoo groups list.

Tom Behler: KB8TYJ