That may work, but I would prefer to not have to add additional hardware.
73,
Mark, N8ME
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Bonjour is installed and working.? All the online info I've found online indicates that the Pi Zero should create a RNDIS USB / Ethernet gadget, but it looks like Windows has removed the drivers. Some of the posts mention alternate drivers, but I can't get any of these to work with current Windows 10.
73,
Mark, N8ME
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On Thu, Jan 14, 2021 at 06:20 PM, Mark Erbaugh wrote:
It seems Windows 10 doesn't like RNDIS / Ethernet Gadget.
I think for windows to see the Pi over USB you need to install Apple bonjour.? ? --
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You can attach a enc28j60 and enable true ethernet port on
raspberry pi zero
Rick LU9DA
El 15/1/2021 a las 00:20, Mark Erbaugh
escribi¨®:
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I spent the day trying to access my Raspberry Pi Zero via SSH over
USB with no luck. It seems Windows 10 doesn't like RNDIS /
Ethernet Gadget.
FWIW, the $5 Pi Zero doesn't have wireless, you need to spend $9
for a Pi Zero W.
73,
Mark, N8ME
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Re: Weird CAT behavior in SSB mode change
Thanks for your fork, I think I'll re-base my fork on top of yours. The
interface is sooo smooth. I'll test everything again with your fork.
; )
Rafael
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On 1/14/21 9:49 PM, Reed N wrote: Yep, that's it. If you find issues with CAT stuff on it, definitely
send a PR my way!
Reed
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MPJA Items on Sale (includes LM-386 pkg of 10)
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Re: Weird CAT behavior in SSB mode change
Yep, that's it. If you find issues with CAT stuff on it, definitely send a PR my way!
Reed
|
I spent the day trying to access my Raspberry Pi Zero via SSH over USB with no luck. It seems Windows 10 doesn't like RNDIS / Ethernet Gadget.
FWIW, the $5 Pi Zero doesn't have wireless, you need to spend $9 for a Pi Zero W.
73,
Mark, N8ME
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Re: Weird CAT behavior in SSB mode change
Reed, this is your fork, right?
Rafael
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On 1/14/21 4:31 AM, Reed N wrote: What software version are you running?
Reed
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Here's a Pi-Zero for $5:? ? Looks ideal. As demonstrated by the recent thread here about the Nano Every: ? ?? /g/BITX20/message/85303there is some work involved in porting code to a different processor. The Nano Every board is far closer to our Nano CH340 clones than the Arm processor found on the Raspberry Pi Zero. However, it shouldn't be that tough. In fact, there are Arduino compatible libraries available for the Raspberry Pi, so this port will mostly be a matter of dealing with the usual differences in hardware around?timers and interrupts. Jerry, KE7ER
On Thu, Jan 14, 2021 at 01:03 PM, gector wrote:
Definitely. I don't know how you'd get one for $5, but it would make a very extensible controller. You could have wireless CAT controls, probably run a better display, and do some digital signal processing. Could probably show a waterfall AND run the radio. One of the best benefits would be linux development instead of using the Arduino IDE, there are a ton of standard and very useful C and C++ libraries available on linux. I'm sure there would be hurdles, but you could do a lot with that processor.
?
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Definitely. I don't know how you'd get one for $5, but it would make a very extensible controller. You could have wireless CAT controls, probably run a better display, and do some digital signal processing. Could probably show a waterfall AND run the radio. One of the best benefits would be linux development instead of using the Arduino IDE, there are a ton of standard and very useful C and C++ libraries available on linux. I'm sure there would be hurdles, but you could do a lot with that processor.
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Yup, as stated in post 85296:
##########
? ? The above is not always true.
? ? It could well be that a competitor pops up in the next few months that has a better product.
##########
However, I have yet to hear of a tinySA clone that is anything but a (possibly poor) copy of the original.
Until somebody does improve it, I suggest rewarding the creators.
Though if there is a clone out there somewhere at half the price,
some might consider that sufficient improvement.
Jerry, KE7ER
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On Thu, Jan 14, 2021 at 12:18 PM, Arv Evans wrote:
Hmmm...some clones are because the original was faulty and the clone
manufacturer has fixed the problem.? 8-)
_._
?
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Re: QUESTION for All - EASY BITX - HP 2800 series Schottky Diodes for Mixer
Loris,
Should be fine to just substitute an ADE-1 or SBL-1 on any *bitx* design.
Diode ring mixers present an impedance at the input roughly equal to what is
found at the output port, since when two of the diodes are conducting
(as they are most of the time) there is pretty much a direct RF connection from
input to output.? But these mixers tend to work best in a 50 ohm environment.
Here's a brief description of the bidi amps as presented by Farhan in 2004 for
the original Bitx20 (the phonestack.com page is no longer available):
? ??
The Easy Bitx and the bitx40 are very similar:
? ?
? ?
Unfortunately the Easy Bitx has no complete schematic, pages 28,31,34,38,42 are?of interest.?
These early bidi amps are designed such that a 200 ohm impedance at one end (the filter)
will cause a 50 ohm impedance at the input.? This may not be ideal, as there is not much
in the Bitx20/Bitx40 that ever establishes that impedance, only the impedance ratios.
Here's a description of the bidi amps by w7zoi:
? ?
That paper starts out describing the bidi amps used on the Bitx20, Bitx40 and on the Easy Bitx.
As W7ZOI explains, impedance matching is not ideal, and later presents a design
with two emitter followers after the voltage gain to create a consistently 50 ohm bidi amp.
Farhan has used that new 50 ohm design in the uBitx, stirring things around some
to save a few parts and some power supply current.
The transformers around the 11.059mhz crystal filter transform the 50 ohm impedances
of the bidi amp and the demodulator by the square of the 2:1 winding ratio,
so the filter sees 4*50=200 ohms at both ends.
I would recommend building the Easy Bitx as designed, it will probably work just fine.
Then, if you wish to experiment with getting better performance, try adding impedance
matching transformers and the ubitx/w7zoi 50 ohm bidi amp design.
Substituting in an ADE-1/SBL-1 mixer will likely have less impact.
Jerry, KE7ER
?
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On Thu, Jan 14, 2021 at 09:53 AM, Loris IW4AJR wrote:
Thanks Jerry
?
I think I'll try (on the EASY BITX) with a Minicircuits mixer, instead of the two toroids and the diodes ring.
?
A Question if you want to answer me:?
?
Do you think that in the EASY BITX the impedance matching is correct using an ADE-1 or SBL-1 instead of the original mixer circuit?
?
Thanks for the answers and a dear greeting ... de
--
IW4AJR Loris
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Hmmm...some clones are because the original was faulty and the clone
manufacturer has fixed the problem.? 8-) _._
On Thu, Jan 14, 2021 at 12:20 PM Gerard < kabupos@...> wrote: Ok Jerry
What bothers me a little is that it is 79 € or 96$ at passion radio official distributor of Tinysa
Double the price in the US ($49)
I inquired, if purchase in the US, 30€ of shipping , so it is the same + customs etc
I wouldn¡¯t take a clone because bad quality
So I¡¯m waiting for the falls sales in case...of a good price.
Wait and see. lol
cdt
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Re: QUESTION for All - EASY BITX - HP 2800 series Schottky Diodes for Mixer
|
Ok Jerry
What bothers me a little is that it is 79 € or 96$ at passion radio official distributor of Tinysa
Double the price in the US ($49)
I inquired, if purchase in the US, 30€ of shipping , so it is the same + customs etc
I wouldn¡¯t take a clone because bad quality
So I¡¯m waiting for the falls sales in case...of a good price.
Wait and see. lol
cdt
|
Re: QUESTION for All - EASY BITX - HP 2800 series Schottky Diodes for Mixer
Thanks Jerry
?
I think I'll try (on the EASY BITX) with a Minicircuits mixer, instead of the two toroids and the diodes ring.
?
A Question if you want to answer me:?
?
Do you think that in the EASY BITX the impedance matching is correct using an ADE-1 or SBL-1 instead of the original mixer circuit?
?
Thanks for the answers and a dear greeting ... de
-- IW4AJR Loris
|
Re: QUESTION for All - EASY BITX - HP 2800 series Schottky Diodes for Mixer
HFSignals has never sold individual parts.
The cost to ship from India makes that a bad idea.
There is no special trick to winding those torroids.
I doubt that how tightly they are twisted or how tightly they are wound on the torroid
makes much difference at all.
If you are worried about mixer performance, I'd recommend substituting an ADE-1 or SBL-1
level 7 diode ring mixer, see if that makes any difference.
If you buy a genuine part from Minicircuits, the performance to expect is documented.
It would be interesting to compare results between a hand built mixer such as found on
the uBitx and a manufactured mixer.? I'd guess that the primary difference we would see
in the frequency range we are interested in would be in the rejection of undesired products
due to not having all four diodes on the same die for best matching.
Jerry, KE7ER
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On Thu, Jan 14, 2021 at 06:05 AM, Loris IW4AJR wrote:
Hi Ashhar
?
you probably have not read the chat title correctly, I am not referring to the ?BITX of your production, but to the EASY BITX (40m) that I am mounting, your mixers are fine as they are, in the EASY version the inputs and outputs are instead , toroidal transformers, are wound and twisted by hand, this is my concern! ... I don't think it's possible to get high IP3 performance from hand-wound toorids (by a hobbyist) and a 1N4148 quad diode.
So I was looking for information on possible improvements of these mixers! ... Can you tell me where I can get the pre-wound toroid you use in the ?BITX-V6 card?
By the way, the ?BITX-V6 that I have already assembled is fine as it is, in fact I have decided to also remove the AGG (which I have tried but it works very badly) and to use ?BITX-V6 as you have built it, any change only risks getting worse instead of bringing some benefit.
Thanks for the reply 73 de
--
IW4AJR Loris
|
Gerard,
I suggest you look for a tinySA, good from?0.1MHZ-350MHz
About the same price.
All the cheap spectrum analyzers are using chips designed as complete receivers
for VHF and above.? The tinySA includes a diode ring mixer up front
to convert the incoming signal to a 415mhz IF frequency
that one of those receiver chips can see.
Many people looking for a spectrum analyzer are interested in the frequencies
used by cell phones, wifi, and bluetooth devices.
For them the product you show is ideal.
Jerry, KE7ER
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On Thu, Jan 14, 2021 at 02:27 AM, Gerard wrote:
Why can only 33 4400 mhz cards be found?
This does not exist on the frequencies we are interested in. Ex 0-100Mhz?
Another question, has anyone ever modified this type of PCB to adjust a lower frequency range (Would need the schematic?)
In addition, is the software that goes with it planned for our frequency range?
It¡¯s winWNT something like that I believe
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Re: Weird CAT behavior in SSB mode change
I was trying to fix in my branch (fork from Farhan latest version), but
I don't know if at 3am I was already misbehaving (and I made other
changes too):
Prior, I took 2h to realize why I was not able to talk to ubitxv6 serial
just after I opened the device-file on Linux... had to put a sleep(2)
between the open and the actual first write:
But all good, I think I understand now how the firmware works.
Rafael
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On 1/14/21 4:31 AM, Reed N wrote: What software version are you running?
Reed
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Mark Erbaugh
Bob Lunsford
Gerard
Loris Bollina