On Fri, 13 May 2022 03:30:35 -0400, time-nuts-requ...@lists.febo.com
wrote:
time-nuts Digest, Vol 217, Issue 25
>
> Message: 2
> Date: Thu, 12 May 2022 07:01:11 -0600
> From: Bob kb8tq
> Subject: [time-nuts] Re: Effect of temperature on cheap puck style
> GNSS antennas
Hi
> On May 12, 2022, at 3:21 AM, Lux, Jim wrote:
>
> On 5/11/22 11:50 PM, Matthias Welwarsky wrote:
>> Dear list members,
>>
>> My DIY GPSDO has a rather well defined dependence to the environmental
>> temperature, which correlates almost linearly with a frequency shift of the
>> OCXO.
On 5/11/22 11:50 PM, Matthias Welwarsky wrote:
Dear list members,
My DIY GPSDO has a rather well defined dependence to the environmental
temperature, which correlates almost linearly with a frequency shift of the
OCXO. However, at times I see the error against the GNSS reference increasing
with
"During sunrise"
Isn't it more likely to be due to changes in the ionosphere during
sunrise/set that causes the timing discrepancies. Any changes to the
antenna / LNA due to temperature will affect the reception of all
satellites so should cancel out.
Andy
www.g4jnt.com
On Thu, 12 May 2022
