The dds chip is the same as used in the Ubitx in my Signal Generator. Signal is very clean and accurate enough for me. Not Oven controlled of course. See the Spec an images of how clean it is On Mon, Mar 18, 2019 at 1:14 PM Laurence Oberman via Groups.Io <oberman.l@...> wrote:
They have a new one now SMT
Mine is this
On Mon, Mar 18, 2019 at 12:54 PM Joel Caulkins/N6ALT <caulktel@...> wrote:
On Mon, Mar 18, 2019 at 09:51 AM, Laurence Oberman wrote:
white board with the atmega328p
Where did you find this? Very compact.
Joel
N6ALT
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Nano has all the pins of the Uno and two more.? THe nano has AD6 and AD7 not on the Uno.
Allison
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They have a new one now SMT
Mine is this
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On Mon, Mar 18, 2019 at 12:54 PM Joel Caulkins/N6ALT <caulktel@...> wrote:
On Mon, Mar 18, 2019 at 09:51 AM, Laurence Oberman wrote:
white board with the atmega328p
Where did you find this? Very compact.
Joel
N6ALT
|
Ripped my electric drill apart one time to replace brushes and later when I went to reassemble all the hardware was missing including the new brushes and springs. Blamed the wife (grin). A few days later found them in a floor heat register in another room....... kids!
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On Mon, Mar 18, 2019 at 09:51 AM, Laurence Oberman wrote:
white board with the atmega328p
Where did you find this? Very compact. Joel N6ALT
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This is the HF signal GEN I built after reading Jack's book. There is a little white board with the atmega328p, the dds chip is separate and front panel. The board I have exposes all the pins. Was very cheap, comes in a kit and could be used instead of the nano On Mon, Mar 18, 2019 at 12:42 PM Laurence Oberman via Groups.Io <oberman.l@...> wrote:
Hello, same atmega328p but yes extra pins, would need to make sure you
change the code for pin numbering and the daughter card would have to
be modified, i.e. remove the nano and create an interface cable for
the mapping of current pins, then the additional pins can come from
the Uno direct to the extra screens etc.
On Mon, Mar 18, 2019 at 12:10 PM Mike Short <ai4ns.mike.spam@...> wrote:
Showing my ignorance here. What would be involved with compiling the nano over to the UNO? it would expose more pins, etc. and the possibility of a different display.
Mike
AI4NS
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Re: New V5 with poor carrier suppression.
The output side of the CLK 0 pad ...700mV p/p? =~+1dbm? ..should be enough
Jim
On Monday, March 18, 2019, 12:09:39 AM PDT, Evan Hand <elhandjr@...> wrote:
I measured at TP18.? It is convenient and what is applied to the T7 coil.? TP18 is the junction of R112, R113, and the ungrounded side of one of the T7 coils on my version 4 schematic.? Since T7 has the same number of turns for each winding, I assumed I should see the same on the output side (which I did).
73
Evan
AC9TU
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Hello, same atmega328p but yes extra pins, would need to make sure you
change the code for pin numbering and the daughter card would have to
be modified, i.e. remove the nano and create an interface cable for
the mapping of current pins, then the additional pins can come from
the Uno direct to the extra screens etc.
toggle quoted message
Show quoted text
On Mon, Mar 18, 2019 at 12:10 PM Mike Short <ai4ns.mike.spam@...> wrote:
Showing my ignorance here. What would be involved with compiling the nano over to the UNO? it would expose more pins, etc. and the possibility of a different display.
Mike
AI4NS
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Showing my ignorance here. What would be involved with compiling the nano over to the UNO? it would expose more pins, etc. ?and the possibility of a different display.?
Mike
AI4NS
|
Hello,???
????????? I have a clip on heatsink on my regulator and its been running warm coming up to 16 months now prior to adding it got very hot.Dave G0AYD.
On Mon, 18 Mar 2019 at 14:29, Don - KM4UDX < dontAy155@...> wrote: Heat sink it. Hack saw away anything near a toroid.?
It it likely makes zero difference to the successful operation of the rig. But it sure feels good.?
Don
km4udx
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Heat sink it. Hack saw away anything near a toroid.? It it likely makes zero difference to the successful operation of the rig. But it sure feels good.? Don km4udx 
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It's still available.? I've stored a copy that I can share.? Would have to put it on dropbox.? Too big to email.
Bruce, K4TQL
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Yes it seem to? be a general trait among young male kids. Fiddeling with stuff.
RV1, 2, and 3 were all incorrect. WAY off from original settings. I think some curious little fingers in the house were tinkering. I can't even get upset... when I was a kid, I fully disassembled my dad's Swan 350. Ahem...I can still remember the horror!
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RV1, 2, and 3 were all incorrect. WAY off from original settings. I think some curious little fingers in the house were tinkering. I can't even get upset... when I was a kid, I fully disassembled my dad's Swan 350. Ahem...I can still remember the horror!
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Re: Interesting article contrasting different ways to design an antenna analyzer
I had a look. It points out, among other things and if I understood it right, that many analyzers cannot give the sign of reactance. The Mini60 (Sark100) would be among them. But how can it display the graphics of the Smith Charts on the PC then?
Il 18/mar/2019 11:26, "Gordon Gibby" < ggibby@...> ha scritto:
Thanks Tom, that¡¯s a very nice review of antenna analyzers?
On Mar 18, 2019, at 03:43, Tom, wb6b < wb6b@...> wrote:
Hi,
As impedance matching and getting the most out of our low power transceivers is a common interest amongst us, I thought this article I happened upon is of interest.
It contrasts a wide variety of different designs that accomplish basically the same goal. This is also analogous?to the many ways to build transceivers, and to a lesser extent to us wanting to cobble together viable spectrum analyzers on a hobbyist budget.
Especially the superheterodyne and direct conversion antenna analyzers described.?
The article does not to seem to be overly biased toward the company hosting the article.
Being a digital person, I like to see things changed to ones and zero just as fast as possible. But the descriptions remind one of how effective analog and hybrid technologies are.
Tom, wb6b
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Re: Interesting article contrasting different ways to design an antenna analyzer
Thanks Tom, that¡¯s a very nice review of antenna analyzers?
On Mar 18, 2019, at 03:43, Tom, wb6b < wb6b@...> wrote:
toggle quoted message
Show quoted text
Hi,
As impedance matching and getting the most out of our low power transceivers is a common interest amongst us, I thought this article I happened upon is of interest.
It contrasts a wide variety of different designs that accomplish basically the same goal. This is also analogous?to the many ways to build transceivers, and to a lesser extent to us wanting to cobble together viable spectrum analyzers on a hobbyist budget.
Especially the superheterodyne and direct conversion antenna analyzers described.?
The article does not to seem to be overly biased toward the company hosting the article.
Being a digital person, I like to see things changed to ones and zero just as fast as possible. But the descriptions remind one of how effective analog and hybrid technologies are.
Tom, wb6b
|
I just added a 7809 equiped with a small heatsink? and its usual capacitors beetween the 12 V connection and the 7805. It's very simple and works fine.
Very 73 de Jean F5PCX.
|
Interesting article contrasting different ways to design an antenna analyzer
Hi,
As impedance matching and getting the most out of our low power transceivers is a common interest amongst us, I thought this article I happened upon is of interest.
It contrasts a wide variety of different designs that accomplish basically the same goal. This is also analogous?to the many ways to build transceivers, and to a lesser extent to us wanting to cobble together viable spectrum analyzers on a hobbyist budget. Especially the superheterodyne and direct conversion antenna analyzers described.?
The article does not to seem to be overly biased toward the company hosting the article.
Being a digital person, I like to see things changed to ones and zero just as fast as possible. But the descriptions remind one of how effective analog and hybrid technologies are.
Tom, wb6b
|
Re: New V5 with poor carrier suppression.
I measured at TP18.? It is convenient and what is applied to the T7 coil.? TP18 is the junction of R112, R113, and the ungrounded side of one of the T7 coils on my version 4 schematic.? Since T7 has the same number of turns for each winding, I assumed I should see the same on the output side (which I did).
73
Evan
AC9TU
|
Re: New V5 with poor carrier suppression.
T7 may be shorted, I have come across one that was shorted.
Raj
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At 18-03-19, you wrote: Jerry, as always, thank-you for your information.
One point, the Clock#0 Vpp is 760mV as I measured it with the Siglent 100 mHz scope that I have. As you stated, I cannot find the signal on pin 3 of D5 matched diodes. To me that is at least a gross test that the diodes are working, as I would have expected a signal if one or the other side was bad. That is with the rig able to receive signals. I believe that it would still be able to decode a signal if only one diode is working, as the receive section would filter the 12 mHz rf.
73
Evan
AC9TU
|
Jim
Joel Caulkins/N6ALT
Kobus ZS6CHK
Raj vu2zap