[Fwd: Re: [Elecraft] High Accuracy TCXO]

[Ken Wagner]

Oops... meant to send this to the reflector... sorry

-------- Original Message --------
Subject: 	Re: [Elecraft] High Accuracy TCXO
Date: 	Tue, 04 Mar 2008 08:14:00 -0500
From: 	Ken Wagner <kenk3iu at cox.net>
To: 	S Sacco <nn4x.steve at gmail.com>
References: 	<1204617020.24653.36.camel at lappy> 
<ff4d109a0803040430s621e42d7s7e582e0a3ab1df1c at mail.gmail.com>



Unless I misunderstand what is published, the firmware for the 1 ppm 
TCXO is only to allow it to be tightened up to 0.5 ppm, and does not 
affect the basic 1 ppm TCXO. I have the 1 ppm TCXO and even though I 
haven't done any scientific calibrations, I'd say it has a 1 ppm 
capability... or pretty darn close to that.

73,
Ken K3IU


S Sacco wrote:
> Brett -
>
> I'm not sure anyone knows the answer to your question: Elecraft still
> isn't shipping firmware to support the 1ppm TCXO...although they ARE
> happily taking our money for the units.  (I have one installed).
>
> 73,
> Steve NN4X
>
>
> On 3/4/08, Brett Howard <brett at livecomputers.com> wrote:
>   
>> Does the higher accuracy TCXO result in lower phase noise?  If so in dB
>> how much lower would one expect out of a delta in 4 ppm and 4.5 ppm.
>> This is assuming the 4ppm which one will get with out implementation of
>> firmware correction and 4.5 ppm delta which one will obtain once this
>> feature is implemented in firmware.
>>
>> ~Brett (KC7OTG)
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