[R-390] Stability

[djed1 at aol.com]

I've measured mine and it drifted 400 Hz over 3 hours from a cold start (heaters turned off).  As noted, whether that's good depends on what you need, but I was comparing it to a WWII Super Pro which drifted 70 KHz in the same 3 hours.  Quite an improvement over 20 years.
Ed  W2EMN

 

 

 

-----Original Message-----
From: Gordon <gordon at n6wk.com>
To: R-390 <R-390 at mailman.qth.net>
Sent: Fri, May 31, 2013 12:28 am
Subject: [R-390] Stability


Since I am fairly new to my R-390A, I have a question.
How long does it normally take from cold turn on, until the Radio is 
stable and no longer drifts?
10 minutes, 30 Minutes, an hour ?
What is considered normal and how much can I expect it to drift during 
that time?
Thanks,
Gordon
N6WK

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