[1000mp] Why?? Difference between TCXO-4 & TCXO-6???

[Ed Gosch]

Last year I purchased a TCXO-6 from HRO and installed it in
place of the stock TCXO-4 in my Mark V.  I noticed that it was
visually identical to the TCXO-4.  There would be no way to tell
the two apart if they were compared side by side.  Has anyone
else noticed this?  Is the TCXO-6 really just a TCXO-4 that has
been hand selected for stability?

73,
W2UV


-----Original Message-----
From: 1000mp-bounces at mailman.qth.net
[mailto:1000mp-bounces at mailman.qth.net]On Behalf Of Earl W Cunningham
Sent: Thursday, August 05, 2004 11:06 AM
To: dalej2 at mac.com; 1000mp at mailman.qth.net
Subject: Re: [1000mp] Why??


Dale <dalej2 at mac.com> wrote:

"You will see, that the Mark V, with its standard TCXO, has the same
accuracy as the older TCXO-6 in the MP.  The newly available TCXO-6 for
the Mark V, is twice as accurate as the standard TCXO-4 that the factory
places in the Mark V radio."
==========
The specs (i.e., "2.0 ppm", "0.5 ppm", etc.) are not measures of accuracy
as Dale states.  They are measures of stability (amount of frequency
drift of the oscillator with a change in temperature of one degree C).

The accuracy of any oscillator TCXO-4, -6, or whatever) is determined by
how closely you adjust its frequency.

73, de Earl, K6SE
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