Re: Antuino update parts kit
we did shipt them all out almost a month ago. I don't think anyone received them. Part of the problem is that the parts are very tiny and the indian customs where confused. I guess they tried licking it to see if they feel anything fun. We will have to reship them all, all over again. The best way would be to have one of our frequently travelling friends hand carry them to the USA and post them from there.
- f?
On Mon, Sep 9, 2019 at 5:36 AM David Wilcox via Groups.Io <Djwilcox01= [email protected]> wrote: Farhan,
When will the update parts kits be shipped to fix the FDIM Antuino issues?? I purchased the latest version recently and am very satisfied with it but want to update the FDIM Antuino so I can pass it on to one of my QRP friends.? I did request a kit when you announced that was your plan for the FDIM unit purchasers.
Thanks.
Dave K8WPE
David J. Wilcox K8WPE¡¯s iPad
|
On Sun, 8 Sep 2019 at 19:01, Ken Hansen < ken@...> wrote:
> On Sep 8, 2019, at 8:40 PM, Adrian Chadd <adrian@...> wrote:
>
> Hey, I set fire to the first radio I repaired. So...
Intentionally?
No, I bought a ts-430s cheap because it was broken on transmit and it turned out the finals were shot - one of the finals transistors was a dead short -? and a resistor got 13.8V 20A through it. It didn't blow any fuse cause it had JUST enough resistance to current limit itself but it definitely caught fire.
Said radio is fine now on all bands. :-)
-adrian
Ken, N2VIP
|
On Sep 8, 2019, at 8:40 PM, Adrian Chadd <adrian@...> wrote:
Hey, I set fire to the first radio I repaired. So... Intentionally? Ken, N2VIP
|
Re: SolderSmoke Podcast 213 WE'RE BACK!
These radio podcasts are very entertaining.
Click on the SolderSmoke link below and it will play in your PC or mobile. Regards,
Allan Mason, JP
Mobile: +61 401 324 058
On Sun, Sep 8, 2019 at 1:11 AM Bill Meara via Groups.Io <n2cqr= [email protected]> wrote:
|
Hey, I set fire to the first radio I repaired. So...
-adrian (kk6vqk)
|
Hi Gus,
I think most people haven't had experience with this kind of purchase protection available from credit card companies.? I hope they cover it so you can start fresh on a new board!
Anyway, you're not an idiot -- no one but you ever makes that kind of mistake (Not!)
Cheers and 73,
Mark.
|
Farhan,
When will the update parts kits be shipped to fix the FDIM Antuino issues? I purchased the latest version recently and am very satisfied with it but want to update the FDIM Antuino so I can pass it on to one of my QRP friends. I did request a kit when you announced that was your plan for the FDIM unit purchasers.
Thanks.
Dave K8WPE
David J. Wilcox K8WPE¡¯s iPad
|
Re: BitX HW-16: full break-in high power ri
On Sun, Sep 8, 2019 at 07:15 AM, Jerry Gaffke wrote:
Yes, you could compromise receiver sensitivity without much downside if atmospheric noise still exceeds front end noise.
Though it is nice to be able to at least listen in when using a crummy antenna, such as a few feet of magnet wire
thrown across the floor.
Good point. I guess that depends on how much you are willing to trade off in transmit power wasted in the series resistor to the diodes. However, the other T/R switches, in the various linked articles, are not that much more complicated that trying to make a broadband shunt diode T/R switch (or anti receiver fryer circuit) worth the effort, other than a fun experiment. ? Although a marketing department could tout the transceiver's amazing ability to transmit without any antenna attached and not fry the finals, and in case of an EMP strike the receiver would (with many legal disclaimers in the brochure) survive. Tom, wb6b
|
Re: BitX HW-16: full break-in high power ri
On Sun, Sep 8, 2019 at 07:15 AM, Jerry Gaffke wrote:
In that 2018 paper on his website, W7ZOI simulates what a VNA would see using LTSpice.
The spice simulation I was interested in, because it was so basic, was schematic Figure 12 and graph Figure 13. I created a schematic in Eagle and ran the simulation last night and was able to see the results, not surprisingly, were the same as the article. Then I added more probes to plot more points in the circuit. So, I learned more about the T/R switch as well as Eagle and Spice (and every thing nice [sorry]). The T/R switch operation is mostly discernible by looking at the schematic, yet not trivial. Another reason that made this a good learning exercise. I can now play with trying more power, off resonance frequencies, removing the diodes. I can imagine what will happen in those cases, but fun to see the results using a calculator that not only, in many cases, can grind the math faster than I can on my hand calculator, but grinding out so many additional calculations and plotting them for me.? Even when I've done things with doing the math by hand, a physical prototype and some final adjustments on the final design is needed, as you pointed out. Of course in Ham Radio home brew, most often, the production model is the prototype. That VNA you linked is really nice and at a reasonable cost. I may add one to my test equipment assortment. I think the?Antuino can be configured to work as a VNA as well, if I remember from one of the early posts about it.? Somehow the whole world is connected. From Heathkits, to going to the moon, to full break-in T/R switches that can stand 100 watts.? Tom, wb6b
|
I don¡¯t understand, this is exactly what I was saying. If I can claim the loss under the purchase protection provisions of the credit card on which I made the purchase, which I can (not is it unethical to do so as this is exactly what the insurance is intended to cover), why would I not do that and buy another? From the supplier¡¯s side, they only see two purchase transaction. This insurance benefit has no impact on the vendor other than doubling its sales to me. This is part of the reason I pay $450 per year for this particular credit card.
|
Gus
I will join the chorus of those suggesting this is a different kind of transaction. A large portion of the kit is parts, some to ladies who wound the toroids, and others who guided automated assembly. They need this work to make ends meet. Meanwhile a worldwide crew can help if you have a DVM available.? Most of us have experienced build issues, just hang in there.
Or see if your insurance will buy another one.
Curt
|
Thank you Lawrence and noted. ?I don¡¯t think it will resolve the issue of no signals at all which is what was troubling me the most.
Regards?
toggle quoted message
Show quoted text
On 8 Sep 2019, at 8:56 pm, Lawrence Galea < 9h1avlaw@...> wrote: P.s. there are a lot of wires bunched up and crossing over the pcb As they presently are you will get a lot of RF pick up and feedback to the components and earlier stages on the pcb.??
They should be run on the bottom and the front/back panel as near to the metal as possible and clamped so as not to move. Also not running/crossing under the pcb but near the edges.
Regards Lawrence On Sun, Sep 8, 2019 at 5:33 PM Lawrence Galea via Groups.Io <9h1avlaw= [email protected]> wrote: Use your signal generator to inject the appropriate frequency into the mixer instead of the DDS and see whether you receive a signal. If you receive any signal that eliminates a faulty DDS.
After that start checking from the AF amplifier working your way to the antenna. Regards Lawrence
Thank you Raj. I really need to get some signal to know that the DDS board is ok. As it stands, I think its duff.?
Roger
Roger,
Take the two antenna wires black and brown and twist them to minimize
radiation and solder the black to the SO239 ground tab and
brown as you done. Keep those wires as short as possible.
Do the same for the Raduino RF out to the mother board.
All the long wires will add to the tuning click problem.
Raj
At 08-09-19, you wrote:
Thank you Vic.? The antenna
is a 30¡¯ vertical connected with RG213.? I have tried several
aerials without hearing anything other than the clack clack of the
tuning, whether the aerial is connected or not.? The display does
indicate a frequency as you tune, although the range varies which you say
is a design feature.
All the loose ends are taped as suggested in the online walk
through.? I should have waited before buying the metal case which
ended up costing more that the boards!? There are few connections
necessary to get a signal that I¡¯m thinking that the DDS board is
faulty.
Picture of unit below.
Roger
On 8 Sep 2019, at 10:39 am, Vic
WA4THR via Groups.Io
<
vhklein@...> wrote:
The frequency starting to step up or down at the ends of the tuning pot
rotation is normal and part of the design to allow moving the tuning
range. If you remember old SW receivers, it is kind of like the tuning is
the bandspread control and at the ends you are adjusting the main tuning.
Also, with no antenna connected the "clicks" when tuning are
typical. If you upgrade to the Allard Munter sketch, those will be
largely eliminated and you can further adjust the tuning range to your
liking.
So, some more information is needed to understand the issue. What antenna
do you have on the radio? Does the display indicate frequencies as you
tune? Can you post a picture of the board and wiring?
=Vic=
![[]](/g/BITX20/attachment/71772/)
?
|
Hi!
I think some credit cards offer protection for things like, "Oops I dropped my phone and it broke!" type accidents, and they don't seek money from the vendor, but just cover the cost with profit from their card fees.? So maybe something like Gus' accident would be covered too!
But don't toss it Gus as I'm sure someone in the group would offer you something for it!
73,
Mark.
|
It¡¯s totally ethical. If you understand the purchase benefit of certain credit cards, this is exactly the type of incident that purchase protection covers. It would be idiotic to not take advantage of the benefits available. That¡¯s like saying it¡¯s unethical to reject insurance coverage for an accident for which you are at fault. Insurance is EXACTLY intended and designed to cover precisely that scenario.?
|
P.s. there are a lot of wires bunched up and crossing over the pcb As they presently are you will get a lot of RF pick up and feedback to the components and earlier stages on the pcb.??
They should be run on the bottom and the front/back panel as near to the metal as possible and clamped so as not to move. Also not running/crossing under the pcb but near the edges.
Regards Lawrence
On Sun, Sep 8, 2019 at 5:33 PM Lawrence Galea via Groups.Io <9h1avlaw= [email protected]> wrote: Use your signal generator to inject the appropriate frequency into the mixer instead of the DDS and see whether you receive a signal. If you receive any signal that eliminates a faulty DDS.
After that start checking from the AF amplifier working your way to the antenna. Regards Lawrence
Thank you Raj. I really need to get some signal to know that the DDS board is ok. As it stands, I think its duff.?
Roger
Roger,
Take the two antenna wires black and brown and twist them to minimize
radiation and solder the black to the SO239 ground tab and
brown as you done. Keep those wires as short as possible.
Do the same for the Raduino RF out to the mother board.
All the long wires will add to the tuning click problem.
Raj
At 08-09-19, you wrote:
Thank you Vic.? The antenna
is a 30¡¯ vertical connected with RG213.? I have tried several
aerials without hearing anything other than the clack clack of the
tuning, whether the aerial is connected or not.? The display does
indicate a frequency as you tune, although the range varies which you say
is a design feature.
All the loose ends are taped as suggested in the online walk
through.? I should have waited before buying the metal case which
ended up costing more that the boards!? There are few connections
necessary to get a signal that I¡¯m thinking that the DDS board is
faulty.
Picture of unit below.
Roger
On 8 Sep 2019, at 10:39 am, Vic
WA4THR via Groups.Io
<
vhklein@...> wrote:
The frequency starting to step up or down at the ends of the tuning pot
rotation is normal and part of the design to allow moving the tuning
range. If you remember old SW receivers, it is kind of like the tuning is
the bandspread control and at the ends you are adjusting the main tuning.
Also, with no antenna connected the "clicks" when tuning are
typical. If you upgrade to the Allard Munter sketch, those will be
largely eliminated and you can further adjust the tuning range to your
liking.
So, some more information is needed to understand the issue. What antenna
do you have on the radio? Does the display indicate frequencies as you
tune? Can you post a picture of the board and wiring?
=Vic=
![[]](/g/BITX20/attachment/71769/)
?
|
Evan, I am testing with a dummy. It sounds like there is a lose ground somewhere but I just can¡¯t figure out where.
The issue started when finnishing the enclosure. I did test the board on arrival and can¡¯t recall this issue.?
73 Werner?
|
You might be getting RF back into the radio.? Does it happen into a dummy load?
73
Evan
AC9TU
|
Forgot to say, I check my signal with my other rig.
|
I have the V5 uBITX. All seems to be okay but in TX I get a big hum. The issue is even worse when keying. I disconnected the mic so that can't be an issue. Replaced the powersuppy also, that doesn't help. When I touch the heatsinks of the irf510 it get worse.
It looks like a ground loop issue but even with nothing connected the hum is there.
RX is perfect.
Any ideas?
Thanks, Werner pa3gyv
|
There are lots of SSB transceiver kits out there.
The uBitx has its warts, but it works well enough and packs a lot of features for the price.
If it was possible to stay in business at a significantly lower price, there would be a dozen
such products available on ebay/alibaba/...
It's a totally open design.
Anybody who thinks they can make money by kitting these up for less
can go ahead and give it a try.? Don't have to know anything about design,
just how to copy.? And how to deal with the occasional ornery customer.
Good luck with that!
Jerry, KE7ER
toggle quoted message
Show quoted text
On Sun, Sep 8, 2019 at 10:32 AM, Sudanthiram N wrote:
At these prices hfsignals is not making much of a profit per unit.
I can not agree this. No seller can not do business without much profit. Please note HF signal never refund? .(I think)
Thanks and regards
Sudanthiram
VU2NSK
|
Allan Mason
David Wilcox K8WPE
PA3GYV - Werner