The good receivers do seem to use I+Q. Usually the signal is I and in the
8170 I believe is used to generate the time code. Its not specifically a
Freq rcvr, though I think you can get to everything you need to pull a
reference out for comparison. The Q is generally used for the AGC. So I
might gue
Hello Paul,
Yes I forgot to mention that I have a ferrite resonant antenna with
very good SNR.
The receiver also displays code in the left digit of the display like the
manual says but with about 20% errors which is the digit 4
I don't think the antenna is the problem, I have built nearly 100
Dan,
I have been watching these for awhile, for a potential propagation
beacon on 6M.
My project has not reached critical mass yet.
Some speculation:
The +12VDC DC power connection and GND are the input power for the
oscillator and the oven.
One coaxial connector is the output at RF, 50 M
Paul
I do not own one of these but perhaps soon.
Many of the vlf receivers required a pre amplified antenna. Typically a
loop. Not saying that yours does. But if it were missing that could make
things difficult.
Paul WB8TSL near Boston
On Sat, May 28, 2011 at 2:38 PM, Paul A. Cianciolo wrote:
>
I am glad someone finally said this, as after I read a few explanations, I
could see that the temperature reading would be off somewhat, especially in
the resolution used.
Thanks,
Will
*** REPLY SEPARATOR ***
On 5/28/2011 at 11:53 AM Tom Van Baak wrote:
>The problem is actuall
The problem is actually with all three parts: the 1620 sensor, TBolt
firmware, and with Heather. Let me explain.
1) While the root cause is an anomaly in the DS1620 chip, Dallas
identified (not solved) it and described a work-around after Weather
Station users noticed glitches in the late 90's.
Hello Folks,
This is my first post to the list and I appreciate being able to do so.
I recently acquired a Spectracom 8170 WWVB receiver.
The manual is available at the Spec. site and I have downloaded it, and been
reading through it.
One of the problems is the lock light comes on alm
I found today at the swap meet some nice looking Wenzel OCXOs. Pictures
can be found at item 180511097522 on eBay, although his description is
incorrect, they certainly are not Voltage controlled, and do they have
any means of adjusting the frequency.
They have a strong similarity in appearan
On 5/27/2011 10:58 PM, WarrenS wrote:
The Tbolt uses a special method to get high resolution data from its
temperature sensor by combining three things.
The first is the sensor's standard data output which is used for the most
significant bits. This gives about 1 deg resolution.
2nd an internal r
On 5/27/2011 10:58 PM, WarrenS wrote:
The Tbolt uses a special method to get high resolution data from its
temperature sensor by combining three things.
The first is the sensor's standard data output which is used for the most
significant bits. This gives about 1 deg resolution.
2nd an internal
On 05/28/2011 04:12 AM, Mark Sims wrote:
The spikes are due to an artifact in the way the Tbolt firmware reads the
temperature sensor chip. It reads two registers and combine the values to get
a high-res temp reading. But if the firmware accesses the registers in-between
the time that the t
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