[R-390] Stability

[Bob Camp]

Hi

A lot depends on the environment your radio is in and how long it's been off. If you are trying to run narrow shift RTTY unattended with sharp demos filters, the answer may be days. If you are trying to listen to a local AM broadcast, the answer may be a few minutes with occasional intervention. In normal operation these radios were not used like the R-1051 in set / forget mode. It was expected that you would have to tweak them from time to time. 

All that said, a good radio running continuously, in the right conditions, will hold < +/-40 Hz all day long. I certainly would not toss one out because it doesn't. It's also tough to fix if it does not, since the conversion crystals are as much part of the problem as anything else. 

Bob

On May 31, 2013, at 12:27 AM, Gordon <gordon at n6wk.com> wrote:

> 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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