whats the latest on the new w8tee lcd vfo for the ubitx ?
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Re: Pulling Arduino data apart
Here's a starting point on web resources regarding this big/little endian stuff in case you're curious.
? ??
But for most of us this is a non-issue, and you needn't worry about it.
And you certainly don't have to suffer anybody arguing about it.
Code on the Nano (and likely in most any Arduino environment) is little endian.
Though on an 8 bit machine like the Nano, endian-ness is mostly a matter of what the compiler wants to do.
? ??
? ??
Jerry, KE7ER
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On Fri, Mar 9, 2018 at 11:46 am, Dr Fred Hambrecht wrote:
Anytime knowledge is imparted it cannot be viewed as ¡°wasted bandwidth¡±. I for one enjoyed the conversation.
?
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I found a much better place to connect the drain of the MOSFET. First I replaced R70 with a 510 ohm resistor that I happened to have in the same footprint.
Then I connected the MOSFET drain to the relay side of that resistor, i.e. to the point M2 on the schematic. This setup still shorts the incoming audio to ground and kills the pops, but leaves a voltage divider of R253 and R70 connecting the sidetone to the volume control. Depending on your value of R253, this may be perfect as is. My R253 was 220 k and I needed more volume, so I put a 50 k trimpot across R253. It is just about right for me at maximum resistance, but I can adjust it downward if I should want more volume still. If your R253 is a smaller value and the sidetone is too loud, just replace it with something of higher resistance.
The volume control will now have final control over the level and can be tweaked in operation if needed.
73,
John AD0RW
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Re: RD16HHF1 power curve flattening...some
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Re: uBITX Firmware CEC Version Added WSPR function, I am looking for a beta tester.
#ubitx
So simple.... TKS Philip Carlos
Carlos.
Just enter it in the box, it is in hz. Not Mhz, so no decimal point.
Philip.
-- Carlos Wenzel ik2yra@...+39-3284684518
Skype: IK2YRA
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Re: uBITX Firmware CEC Version Added WSPR function, I am looking for a beta tester.
#ubitx
Carlos.
Just enter it in the box, it is in hz. Not Mhz, so no decimal point.
Philip.
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Re: Pulling Arduino data apart
Anytime knowledge is imparted it cannot be viewed as ¡°wasted bandwidth¡±. I for one enjoyed the conversation. ? v/r Fred W4JLE ?
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From: [email protected] [mailto:[email protected]] On Behalf Of Jerry Gaffke via Groups.Io
Sent: Thursday, March 8, 2018 17:15
To: [email protected]
Subject: Re: [BITX20] Pulling Arduino data apart ? Agreed, we've wasted too much time on something not at the top of our priorities here.
Anyone wishing to continue this discussion is welcome to send me a private message.
In parting, I believe that once the data is in the CPU, in this case stored as a 32 bit integer
in a register, endian-ness is not a factor.? This code?looks correct to me:
Here's C code for machine A to send a 32 bit integer as a sequence of four bytes in little endian order::
? ? sendbyte(data32);? sendbyte(data32>>8);? sendbyte(data32>>16);? sendbyte(data32>>24);
And code for machine B to receive that 32 bit integer (assumes getbyte() returnes an unsigned 8 bit integer):
? ? data32=getbyte();? data32|=getbyte()<<8;? data32|=getbyte()<<16; data32|=getbyte<<24;
This C code doesn't care if the machine it is on is big endian or little endian.
?
An as I understand it, Jack disagrees, here's his argument: My comment about putting bits on the floor meant that you had to know something about
the byte order, otherwise why are you interested only in the high byte. Your code: ? ? sendbyte((data32>>24)&0xff); to send a byte works great if the data is big endian:? ????????01010101?00000000 00000000 00000000. ??????? // Yellow is the byte of interest However, if you don't know the byte order and it is:? ????????00000000 00000000 00000000?01010101 Your code would throw the relevant data on the floor. Your code is only safe if you know
the order. A?union?is a simple way to determine that order. On Thu, Mar 8, 2018 at 12:53 pm, Jack Purdum wrote: We've wasted enough bandwidth on this. I think unions are a great way to learn how data are organized for a given compiler and are well-worth knowing about. Anyone who doesn't think so can easily ignore them.
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Re: uBITX Firmware CEC Version Added WSPR function, I am looking for a beta tester.
#ubitx
Hello Phillip, How can you enter 14.094850 on Band 2 Box??? tks Carlos
Hi Ian.
The frequency error is down to the way uBITX manager calculates the RF frequency. If I enter into the Band 2 box 14094850 Hz, then the audio comes out of my radio at 1.5 KHz, when it is tuned to 14.09560 MHz.
Now my WSPR is going all around the world.
I do find that I get a bit confused by all the calculations, when trying to work out all this stuff.
Anyway thanks for putting WSPR in to the uBITX, a great bonus.
Philip G7JUR?
-- Carlos Wenzel ik2yra@...+39-3284684518
Skype: IK2YRA
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I ordered mine Dec 19 and had shipped India Post.? Arrived March 6 in VE3 Land.
Rod
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Hi,
Ordered ?Bitx on december 26 ($ 109)
Shipped on february 26? (India Post).
Received on march 8.??
It only took 10 days with India Post?!
But ...? before I could even see the package, had to pay additional $ 55? (€ 43,87), Belgian taxes and handling !
Robbery ...? :)
By the way,? U1 is WX.? I will replace it.
73
Herman
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Re: uBITX Firmware CEC Version Added WSPR function, I am looking for a beta tester.
#ubitx
Ian
The problem has gone. It was a wrong/thin/broken cable. I changet it. I also found a missing power output if you operate wspr function far away from the original ubitx frequency. I agree with Phillips abt this issue, BPF maybe remains locked on the original band.
"
?the display shows 14.097100?MHz which is the frequency I selected in uBITX manager, but the RF being transmitted is in fact 14.099330?MHz..??"?
cero beat on 14.099330 mHz when ubitx displays 14.097100 mHz (is not right?.... 2.2kHz)
Carlos
Philip
Thank you very much Your feedback is a great help to me because I am not in an environment where I can test now.
I will update the program within a day or two and upload it again and announce it through the group.
Note that the BPF selection uses some tricks as a constraint on program memory.
I will check that again.
Once again, I sincerely appreciate your test.
Ian KD8CEC
--
Best 73
KD8CEC / Ph.D ian lee
kd8cec@...
(my blog)
-- Carlos Wenzel ik2yra@...+39-3284684518
Skype: IK2YRA
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I have implemented Greg W3NW's circuit using the same values BS170, 300K, 1N4148, 440nF and it does eliminate the pops.
However it's also almost completely quieted the sidetone even with R253 shorted. I can hear the sidetone at full volume but that's way, way too loud a setting for received signals.
Any suggestions?
Pete WK8S
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Hi All,
Just to let you know that thanks to your help, I confirmed my first QSO yesterday evening with FY5KE in CW (439/439). Cndx: uBitx around 10W, trap dipole in attic.
Bet 73, Philippe
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Le 6 mars 2018 ¨¤ 22:32, Jerry Gaffke via Groups.Io < jgaffke@...> a ¨¦crit :
Ah, good.? ?I assume you now hear the sidetone when transmitting CW.
There have been many many discussions about that pop in this forum going back years.
Here's a recent solution from VA7AT, documented by ND6T, looks promising:
? ??/g/BITX20/message/43322
? Jerry, KE7ER
On Tue, Mar 6, 2018 at 01:16 pm, F8BXI wrote:
Please, forgive me, I just forgot to open the audio potentiometer ;-) But There is a big pop sound in the speaker. Will see how to correct this.
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Re: Raduino oscilators. 33mhz and 57mhz " . Documentation says one thing, but this is what I measured.
Yes, 2000 is pretty much unbelievable. I'll try a couple of things, 1 measure with a scope looking at the flutter for more accuracy
2 try to check my counter using wwv ft Collins or wherever it comes from now in the same way,(possibly this should be the first step, I've put it off long enough)?
3 after I've determined a semi warm measurement where its been running continuously (I can actually measure the temp with my little orange non contact for fun, and measure the supply and 5v's just in case) , I'll turn off ONLY the uBITX and measure it in the AM . Also, I'll put a little video on for those who might want to see how I'm doing these things.
Remembering that this is a Raduino that is working quite well. This is an exercise so that I'll be VERY familiar,? for my work with an Raduino that doesn't sound so good when used.. ?
On Fri, Mar 9, 2018 at 9:28 AM, Michael Shreeve <shreevester@...> wrote: Yes, I'll need to hook a scope to hear the 3 or 4 hz flutter when your spot on. Thanks Jerry. Hopefully doing more today, as its raining here finally.
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Great question..? what TDA 2820s are they shipping in the current batch? 73 - Gary ?
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From: [email protected] <[email protected]> On Behalf Of Noel f6bgc
Sent: Friday, March 9, 2018 8:53 AM
To: [email protected]
Subject: Re: [BITX20] Fw: uBitx delivery ? who knows if March 9th delivery batch has good?or tested??TDA 2822 ? ? 2018-03-09 17:47 GMT+01:00 Nelson <ngtdlt@...>: Hoowdy All, I ordered my uBITX on January 11th, 2018 and was notified by PayPal that my order shipped today (March 9th, 2018).? I had it shipped by India Post so expect another month for it to arrive... ? On Thu, Mar 8, 2018 at 1:38 PM, John KG9DK <jab3739@...> wrote: Nick,
I ordered mine on Jan. 8th,got a heads up from PayPal?yesterday that it has been shipped.? Based on that I would say about 2 months from the day you order to ship date. ?
john kg9dk
-- I always thought the Universe was a wonderfully strange place until I?studied Particle Physics - I now know the Universe is, in fact, profoundly odd in nature
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Re: Raduino oscilators. 33mhz and 57mhz " . Documentation says one thing, but this is what I measured.
Yes, I'll need to hook a scope to hear the 3 or 4 hz flutter when your spot on. Thanks Jerry. Hopefully doing more today, as its raining here finally.
On Thu, Mar 8, 2018 at 8:32 PM, Jerry Gaffke via Groups.Io <jgaffke@...> wrote: That's an excellent method to measure the frequency of the 25mhz oscillator.
If the receiver has sufficient low frequency audio response, you could monitor the speaker wires with a scope
and get sub hz accuracy when zero-beating.
I'll check my uBitx (tomorrow?), see how much warmup drift I can detect.
The 2.3khz drift (at 25mhz) you reported seems too large by a couple orders of magnitude.?
Jerry
On Thu, Mar 8, 2018 at 07:55 pm, Michael Shreeve wrote:
I don't know if I responded to this. I thought I explained but then maybe not. What I have always done when there is no buffered output is 1 use a receiver and an "antenna" if you will, one that is near the raduino but not touching anything. 2 turn on a somewhat stable generator and, in my case right now, measure the generator frequency directly with a counter. I can hear that generator in the same receiver.. Zero beat the generator , which is being measured, with the 25 MHz signal emanating from the raduino. Turns out it did change as I indicated, merely from heating up. No direct coupling at all for this measurement. At least to the raduino. If I had a communications monitor I wouldn't need to measure the freq of the generator. Or some other stable generator source. Also, I need to try to determine just how accurate my counter is.?
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Hi uBITX group,
who knows if March 9th delivery batch has good?or tested??TDA 2822 ?
73 - noel f6bgc
Hoowdy All,
I ordered my uBITX on January 11th, 2018 and was notified by PayPal that my order shipped today (March 9th, 2018).? I had it shipped by India Post so expect another month for it to arrive...
Nelson
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Hoowdy All,
I ordered my uBITX on January 11th, 2018 and was notified by PayPal that my order shipped today (March 9th, 2018).? I had it shipped by India Post so expect another month for it to arrive...
Nelson
On Thu, Mar 8, 2018 at 1:38 PM, John KG9DK <jab3739@...> wrote: Nick,
I ordered mine on Jan. 8th,got a heads up from PayPal?yesterday that it has been shipped.? Based on that I would say about 2 months from the day you order to ship date. ?
john kg9dk
-- I always thought the Universe was a wonderfully strange place until I?studied Particle Physics - I now know the Universe is, in fact, profoundly odd in nature
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Ordered on January 13th. ?Received shipping notice via PayPal today. ?Estimated delivery is Tuesday 3/13 via DHL. ??
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On Mar 9, 2018, at 7:28 AM, Xcott Craver < xcottcraver@...> wrote: I know people are tracking the shipping dates, so I offer this as a data point.? ?Hooray!
Thanks, Xcott K2CAJ
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Nick VK4PP
Michael Shreeve