[NLRS] cr-282 for 706IIG

Mon, 12 Jan 2004 20:32:23 -0600

To answer Brent's question...the higher stability oscillator would probably
still have to be adjusted to get 'on' frequency, though once adjusted,
should have less tendency to drift given aging, temperature transitions,
voltage variations, etc. and remain within 216 Hz or so (0.5 ppm at 432 MHz)
over all of these variables.

It SHOULD, however, be possible to adjust the 'standard' reference
oscillator in your IC-706 to get closer to the indicated frequency on
432...700 Hz works out to about 1.6 ppm which is well within the 5-7 ppm
that is 'standard'.

As a side story about the 'competition' for the IC-706...reportedly, it was
very difficult to install the 'equivalent' high stability oscillator in the
original Yaesu FT-100 (without the 'D') and so many of the radios got mucked
up and sent back to Yaesu, that was a factor in Yaesu deciding to make the
higher stability oscillator 'standard' in the FT-100D. When I bought my
FT-817, I also bought the higher stability TCXO-9 and it was almost TOO
simple to install (and I believe the same is true for the FT-897 and
FT-857).

JK

----- Original Message ----- 
From: "Brent Casavant" <[email protected]>
To: "Donn Baker" <[email protected]>
Cc: "Mike" <[email protected]>; "nlrs" <[email protected]>
Sent: Monday, January 12, 2004 17:26
Subject: Re: [NLRS] cr-282 for 706IIG

On Mon, 12 Jan 2004, Donn Baker wrote:

> Its a GOOD idea.  0.5 pmm vs. 5-7pmm w/standard.

So, with the CR-282 would I just experience less frequency drift (i.e.
precision), or would my frequency accuracy also be better?

The reason I ask is that it seems my 706MkIIg is off frequency by about
700Hz on 432MHz.  It may also be off-frequency on other bands as well,
but if so it's not enough to cause operating problems.

Brent

-- 
Brent Casavant http://www.angeltread.org/
KD5EMB -.- -.. ..... . -- -...
44 54'24"N 93 03'21"W 907FASL EN34lv
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