Hi Tim:
Thanks for your very rapid reply on a Sunday and a Holiday to
boot! I also got a reply from Ken, N9VV. He basically agrees with
you, and I gladly accept the turn on drift, no problem. I stand
informed and educated by you both, thanks!
What does bother me though is the drift that occurs for about 2
seconds after going from TX to RX. This same amount of drift happens no
matter what power level is run, and no matter for what time period the
transmission occurs. Makes for tough operating in a digital mode
contest, which is my main operation here. I have never seen this
mentioned on the Flex reflector. Owing to the fact that the drift
amount and time to stabilize remains the same, it doesn't seem like any
temperature related phenomena. If this is inherent to normal operation
of the SDR-1000, then it would appear that either the K2WS mod, or the
GPS mod may be in order. I really want to be sure though before I spend
the big bucks, that there is no other alternative.
Brian K7RE
Tim Ellison wrote:
>It takes a while for the XO to stabilize once the SDR-1000 is turned on,
>so what you are seeing is normal behavior. Mine does not have the
>therminstor and it takes about 30 minutes to stabilize. Taking 10
>minutes to stabilize is not that bad since it is three times faster than
>mine. Remember it isn't a VCXO or an OCXO.
>
>
>-Tim
>----
>Integrated Technical Services
>www.itsco.com
>
>"Si fractum non sit, id reficere"
>-Unknown Roman consultant
>
>-----Original Message-----
>From: [EMAIL PROTECTED]
>[mailto:[EMAIL PROTECTED] On Behalf Of Brian Kassel
>Sent: Sunday, December 31, 2006 1:35 PM
>To: flexradio@flex-radio.biz; [EMAIL PROTECTED]
>Subject: [Flexradio] More Strange Frequency Drift Problem
>
>Folks:
>
> I have been told that with the newer SDR's (mine is only a few weeks
>old), no turn on drift should be experienced with the thermistor
>modification. However I see drift of probably 100 HZ or so immediately
>after turn on, for about 10 minutes or so. I have the feeling that the
>thermistor feature is not working in hardware. Am I correct? Is there
>any way to fix this? I am a retired electronic technician, and have a
>pretty good lab set up here, but don't want to void the warranty. Any
>and all help will be appreciated.
>
>Brian K7RE
>
>
>
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>
>
>
>
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