You're right, Max, I didn't think about subsampling for this - that
would give a more efficient implementation - no LPF, say two 74HC390s
to divide by 10,000, a 74HC74 with one half as a divide by two to get
to 20,000, the other half as the sampler/downconverter, and a
74HC4046A PLL. So, four c
Max Robinson wrote:
If you use a D flip flop as a mixer it will produce the difference
only. You have to get the D and clock signals right I forget which one
has to be the highest frequency to make that work.
Regards.
Max. K 4 O D S.
Why?
A D flipflop works well as a mixer when either the
On 10/08/11 00:14, Bruce Griffiths wrote:
Paul A. Cianciolo wrote:
Hello Folks,
In my collection of stuff, I found an FTS 1050a in good condition.
It has been sitting for 5 years, and I decided to fire it up last night.
It works.
Opened it up and took a look inside. The main reference is a larg
...@yahoogroups.com
- Original Message -
From: "ed breya"
To:
Sent: Tuesday, August 09, 2011 4:05 PM
Subject: [time-nuts] FTS 1050A
If you just want to get it to an integer value, I recommend, for example,
that you find or make a 6.000 MHz VCXO using a common 6 MHz crystal,
and mix i
Paul A. Cianciolo wrote:
Hello Folks,
In my collection of stuff, I found an FTS 1050a in good condition.
It has been sitting for 5 years, and I decided to fire it up last night.
It works.
Opened it up and took a look inside. The main reference is a large box
which I assumed was filled with foam
If you just want to get it to an integer value, I recommend, for
example, that you find or make a 6.000 MHz VCXO using a common 6
MHz crystal, and mix it with the 6.000300 MHz using a 74HC86 XOR,
then the 300 Hz IF can easily be low-pass filtered out and used as
the feedback to a PLL (like
Greenman
Sent: Tuesday, August 09, 2011 2:19 PM
To: time-nuts@febo.com
Subject: [time-nuts] FTS 1050A
The FTS 1050A sounds like a very nice toy. I agree with one of the other
suggestions - use the device as a reference for a DDS generator, so you can
have any frequency you like, with high stability
The FTS 1050A sounds like a very nice toy. I agree with one of the
other suggestions - use the device as a reference for a DDS generator,
so you can have any frequency you like, with high stability.
Many of the newer DDS chips have excellent performance, and in addition
include a clock multiplier
ement
Subject: Re: [time-nuts] FTS 1050A What to do??
Any chance you can trim the frequency to 6 Mhz with the thumb wheels ?
(Probably not but I'd be inclined to try.)
If you can get 6Mhz then dividing down to 1 Mhz should be easy.
On a side note I've been very pleased with the FTS 1050 I
ago. It's stability seems to be getting better and
better every month.
--- On Tue, 8/9/11, Paul A. Cianciolo wrote:
> From: Paul A. Cianciolo
> Subject: Re: [time-nuts] FTS 1050A What to do??
> To: "'Discussion of precise time and frequency measurement'"
>
wer.
> Converting Photons to Electrons for over 20 years
>
>
>
>
> -Original Message-
> From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
> Behalf Of paul swed
> Sent: Tuesday, August 09, 2011 12:27 PM
> To: Discussion of precise time and freque
ul A. Cianciolo
Sent: Tuesday, August 09, 2011 12:06 PM
To: 'Discussion of precise time and frequency measurement'
Subject: [time-nuts] FTS 1050A What to do??
Hello Folks,
In my collection of stuff, I found an FTS 1050a in good condition.
It has been sitting for 5 years, and I decided to f
PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] FTS 1050A What to do??
so send a pix of the widget curious to see what it looks like.
On Tue, Aug 9, 2011 at 12:26 PM, paul swed wrote:
> Paul,
> That is nice oscillator and as you noted semi-useless.
> S
On Tue, Aug 9, 2011 at 9:06 AM, Paul A. Cianciolo wrote:
> The output is 6.0003 Mhz that fed a comb generator creating harmonics that
> were the local oscillator reference for each ascending cable TV channel.
> So as nice as this thing is and I would like to use it. What do you do
> with a
so send a pix of the widget curious to see what it looks like.
On Tue, Aug 9, 2011 at 12:26 PM, paul swed wrote:
> Paul,
> That is nice oscillator and as you noted semi-useless.
> So with that in mind you could multiply by 6 and get to 36 Mhz.
> Use that as a clock for a DDS to divide to somethi
Paul,
That is nice oscillator and as you noted semi-useless.
So with that in mind you could multiply by 6 and get to 36 Mhz.
Use that as a clock for a DDS to divide to something usable at 5 MC granted
some jitter but might be quite good.
Ok now that's really not exciting but then again. You were j
Hello Folks,
In my collection of stuff, I found an FTS 1050a in good condition.
It has been sitting for 5 years, and I decided to fire it up last night.
It works.
Opened it up and took a look inside. The main reference is a large box
which I assumed was filled with foam insulation.
Everything is
tem design
> then please use series two 8V and one 12V batteries for FTS-1050A and
> FTS-1050A/015.
>
> Best regards,
>
> Tsuchiya, JA2GXU
>
> - Original Message - From: "John Ackermann N8UR" <[EMAIL PROTECTED]>
> To: "Discussion of precise t
nd frequency measurement"
Sent: Sunday, February 11, 2007 7:50 AM
Subject: [time-nuts] FTS-1050A battery pack?
>I have a nice FTS-1050A that came without its battery pack. I'd like to
> put one together for it.
>
> Can anyone tell me the battery layout -- number and type o
Thanks! I'd forgotten that the manual had that blurb near the end. At
least that tells me how many, and what kind of cells to use. Then it's
just a matter of making them fit. :-)
Thanks,
John
Colin Bradley said the following on 02/11/2007 04:07 PM:
> John:
> Here is a link to Symmetricon
John:
Here is a link to Symmetricon that describes the internal battery, option 002,
for your unit. You may already have this manual.
Colin
http://www.symmetricom.com/support/download_manual.aspx?DocID=723
Do
Jason Rabel said the following on 02/10/2007 10:07 PM:
> Probably not the answer you are looking for, but I figured I would give my
> two cents.
>
> Another solution would be just to plug it into a modern UPS. Less headaches
> and worries.
>
> Jason
That's what I normally do, but one nice use fo
Probably not the answer you are looking for, but I figured I would give my
two cents.
Another solution would be just to plug it into a modern UPS. Less headaches
and worries.
Jason
___
time-nuts mailing list
time-nuts@febo.com
https://www.febo.com/cgi
Brian Kirby wrote:
> If the unit powers up, you may probe it and see what kind of charging
> voltage you can measure.
>
> John Ackermann N8UR wrote:
>
>> I have a nice FTS-1050A that came without its battery pack. I'd like to
>> put one together for it.
>>
>> Can anyone tell me the battery lay
Hi John:
The FTS4060 uses a power supply brick to convert the AC line to 30 VDC.
That is in turn converted to a bunch of voltages by a switching mode
power supply in the physics package sub assembly. Note that 30 VDC is a
convenient value to make a charger for a "24 volt" lead acid gel cell
If the unit powers up, you may probe it and see what kind of charging
voltage you can measure.
John Ackermann N8UR wrote:
> I have a nice FTS-1050A that came without its battery pack. I'd like to
> put one together for it.
>
> Can anyone tell me the battery layout -- number and type of cell, an
I have a nice FTS-1050A that came without its battery pack. I'd like to
put one together for it.
Can anyone tell me the battery layout -- number and type of cell, and
physical arrangement -- so I can try to reconstruct it?
Thanks!
John
___
time-nuts
27 matches
Mail list logo
