BITX QSO Afternoon/Evening, Sunday, June 3, 3PM & 7PM Local Time, 7277 kHz in North America, 7177 kHz elsewhere.
BITX QSO Afternoon/Evening, Sunday, June 3, 3PM & 7PM Local Time, 7277 kHz in North America, 7177 kHz elsewhere.
Join us as we make contacts with our BitX-40s or uBitXs or anything else on 7.277 MHz in 40 meters!
This is a worldwide event for BitX40 (and other QRP)?stations starting at 3PM and 7pm in each time zone. To participate, call CQ BitX on Sunday, starting at?3PM and/or 7PM?your local time. The BitX QSO Night continues through the evening and conditions usually improve after sunset, so it is worthwhile to participate later in the evening.
Suggested Best Operating Practices:
Work at QRP power levels unless conditions require more power.
Call and listen for CQ BITX on the hour and every quarter hour.
It is helpful if you call CQ BITX with your callsign, name and location.?
Repeat your callsign a number of times during your CQ BITX and during QSO's.
Start a QSO by confirming the callsign, location, name and signal report of the other operator.
Say the callsign, name and location of the other operator so others can hear.
If the frequency is busy, avoid long conversations.
After your initial QSO is complete, ask if there are any other stations who would like to contact.
Report your QSO's, discuss propagation, noise, signal reports, audio reports, antenna type, etc. in this thread.
This is an undirected, scheduled event.? The BITX QSO Night relies on you to call CQ BITX to initiate contacts with other stations, so warm up that final and transmit a few calls on Sunday evening.? Talk to you then!
--
John - WA2FZW
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Does anybody know, in case one updates the firmware, whether the bfo settings are left unchanged or not?
Il 01/giu/2018 01:10, "Richie Chambless" < rchambless7@...> ha scritto: I agree with Daniel. You need to set your BFO. I had mine get out of alignment when the encoder button got stuck. It makes the receiver sound very tinny and harsh if your BFO is set too high. Lower the frequency 100 hertz at a time until it sounds good to you.
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Re: boosting the power on 28 MHz
#ubitx
And the on4kst chat for skeds
Il 01/giu/2018 10:11, "Allard PE1NWL" < pe1nwl@...> ha scritto: For 6m (and up) you can use the DXrobot to monitor the band condition and
to efficiently work DX:
Band status alerts are also sent via Twitter:
And if you have an Android device you can use this free alerting app:
73 Allard PE1NWL
On Fri, June 1, 2018 08:36, iz oos wrote:
> Maybe in Europe works a little bit better. In May and June we know bands
may be open and some people try to call. Also are very important the
beacons. TEP is another story as I found it open in February to South
Africa and no beacon can help. Dxmaps Site may help with its e-sporadic
clouds maps but these are theoretical values based on actual qsos and if
no
> one calls no e-cloud can be mapped. SELFSPOTTING in these cases should
not
> be blamed.
> Il 01/giu/2018 03:45, "ajparent1/KB1GMX" <kb1gmx@...> ha scritto:
>> 6M has been the magic band for many decades before me.? ;)
>> As a hard core VHF/UHF op I spend a lot of time on 6M.? How hard core?
My first three HB radios were for 6, they remain in service since.? 6M
is
>> not high power, its good antennas, yagis and they are not hard to
build.
>> The entry level is horizontal 3 elements on a 6ft boom and a few watts.
10M is a second favorite.? Its open more than closed.? The problem is
everyone
>> is listening, no talking.? End of last cycle I got tired of hearing "10 is
>> dead" so with a
>> tribander, end fed halfwave wire and qrp power [4W SSB] I worked 85
countries in
>> 5 months.? There was TEP and Eskip enough that it included spots like
MacMurdo
>> and the Falklands from W1 land.? Then a living got in the way... ;) I
hear its dead from many, they all answer the question, When did you
call
>> CQ there?",
>> they didn't.? ?If no one is talking someone has to make the first
noise.
>>? ?Generally true
>> most bands but generally 10 and 15 (and 17) will be daylite bands for a
while and
>> occasional night skip.? Oh, and 6M is entering the E-skip season (least
here in USA)
>> and EU too and that happens any time for a few minutes or hours.? The only
>> way
>> to know is to be there.
>> Allison
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Re: Ideas for AM, NB FM Demod and CW filter board
Hello?
Maybe a simple solution with a NE567 as a PLL FM demodulator / synchronus AM detector will be ok in order to keep the cost and the complexity of the circuits down.
http://www.amalgamate2000.com/radio-hobbies/radio/ne567_tone_decoder_as_am_fm___de.htm
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Re: A steal for Arduino Experimenters
That seems to be the
standard response from Chinese suppliers, Vince. I encounter
it on just every occasion. It seems to be spreading too. I had
an Australian supplier ask for a photograph of incorrect
alcohol stove parts I received yesterday.
Bill VK7MX
On 30/05/2018 3:18 AM, Vince Vielhaber
wrote:
toggle quoted message
Show quoted text
Banggood's
customer service isn't exactly top notch.? I ordered something
that came without a power cord and contacted their CS dept. The
response was to send them pictures.? Pictures of what?? An empty
spot on my desk where a cord would've been?? A power strip with an
empty outlet??? Fortunately I had a cord here that worked (it
wasn't a standard PC style cord) so I just dropped it but I'm a
lot more careful of what I buy from them.
For the price I just don't expect it to be 100%.? I ordered a
crimper in a plastic case.? The case was all busted up when it
arrived.? Didn't even bother contacting them, just taped it up and
left it at that.
Vince.
On 05/29/2018 04:38 AM, David Wilcox via Groups.Io wrote:
I bought the Elegoo starter kit for $30.00
and it came with a little CD
with all the files on it.? Was well worth the money.? You can go
to the
Elegoo site too and download their starter files.? I am sure
most of the
starter programs are similar.
Here is the beginning page:
The kit I have is the basic one for the Mega 2560.? I couldn't
download
the file on my old iPad for some reason but you can with a real
computer.
I am surprised you aren't getting better service from Bangood.?
I
haven't had any problems with their stuff so far.? I prefer
Adafruit
though as their service is fantastic.
As long as you have the kit any beginning book about beginning
Arduino
should give you the lessons on how to use it.? The Arduino
website
itself has lots of information.? Looking over many of the
starter kits
available they all have the same or similar parts.? You just
need the
lessons.
FWIW, your mileage may vary.
Dave K8WPE
On May 28, 2018, at 9:25 PM, AG?H <[email protected]
<mailto:[email protected]>>
wrote:
I ordered and received the Basic Starter
Kit from Bangood.? The kit,
however, has no 'help' manual but a later post included a web
address
from Bangood to send for the free PDF starter guide.? That
link did
not work.? I wrote Bangood and, after two requests, received a
75mb
zipped file.? I tried to unzip it and was given the message
that the
file couldn't be unzipped as it was corrupted.
Several requests to Bangood to send re-send the file have
fallen on
deaf ears.
So......has anyone received the PDF that could forward me a
copy?? It
would be greatly appreciated as this nubee needs all the help
he can
get in experimenting with the Arduino.
Thanks,
Keith AG?H
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Re: boosting the power on 28 MHz
#ubitx
For 6m (and up) you can use the DXrobot to monitor the band condition and to efficiently work DX: Band status alerts are also sent via Twitter: And if you have an Android device you can use this free alerting app: 73 Allard PE1NWL On Fri, June 1, 2018 08:36, iz oos wrote: Maybe in Europe works a little bit better. In May and June we know bands may be open and some people try to call. Also are very important the beacons. TEP is another story as I found it open in February to South Africa and no beacon can help. Dxmaps Site may help with its e-sporadic clouds maps but these are theoretical values based on actual qsos and if no one calls no e-cloud can be mapped. SELFSPOTTING in these cases should not be blamed.
Il 01/giu/2018 03:45, "ajparent1/KB1GMX" <kb1gmx@...> ha scritto:
6M has been the magic band for many decades before me. ;)
As a hard core VHF/UHF op I spend a lot of time on 6M. How hard core? My first three HB radios were for 6, they remain in service since. 6M is not high power, its good antennas, yagis and they are not hard to
build. The entry level is horizontal 3 elements on a 6ft boom and a few watts.
10M is a second favorite. Its open more than closed. The problem is everyone is listening, no talking. End of last cycle I got tired of hearing "10 is
dead" so with a
tribander, end fed halfwave wire and qrp power [4W SSB] I worked 85
countries in 5 months. There was TEP and Eskip enough that it included spots like
MacMurdo and the Falklands from W1 land. Then a living got in the way... ;) I
hear its dead from many, they all answer the question, When did you call CQ there?",
they didn't. If no one is talking someone has to make the first
noise. Generally true
most bands but generally 10 and 15 (and 17) will be daylite bands for a
while and occasional night skip. Oh, and 6M is entering the E-skip season (least
here in USA) and EU too and that happens any time for a few minutes or hours. The only
way
to know is to be there.
Allison
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uBITX -Regarding the PA transistor heatsinks.
?
I can see the insulation argument to why these are installed hanging on to the IRF510s but this puts a large mechanical load on the transistor legs and increases the risks of damage especially if one tried to use the uBITX as a portable, even as a SOTA rig.
?
One could fit a larger heatsink that was fixed to the chassis/casing or PCB and one would then have to add rectangular insulating washers between the transistors and the heatsink.
These changes would increase the parallel drain(s) capacitance to ground
?
What sort of negative results should/could one expect from these measures?
?And could one fix'em?
?
I envisage these positive results:-
-?????? better mechanical strength
-?????? easier to provide controlled cooling of the heatsink.
-?????? a slight increase of weight
?
Someone has suggested use of? very beefy 6400BG heatsink, this has two solderable pins installed in the one end of the profile. However the uBITX board has no room for these.
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Re: boosting the power on 28 MHz
#ubitx
Maybe in Europe works a little bit better. In May and June we know bands may be open and some people try to call. Also are very important the beacons. TEP is another story as I found it open in February to South Africa and no beacon can help. Dxmaps Site may help with its e-sporadic clouds maps but these are theoretical values based on actual qsos and if no one calls no e-cloud can be mapped. SELFSPOTTING in these cases should not be blamed.
Il 01/giu/2018 03:45, "ajparent1/KB1GMX" < kb1gmx@...> ha scritto: 6M has been the magic band for many decades before me.? ;)
As a hard core VHF/UHF op I spend a lot of time on 6M.? How hard core?
My first three HB radios were for 6, they remain in service since.? 6M is
not high power, its good antennas, yagis and they are not hard to build.
The entry level is horizontal 3 elements on a 6ft boom and a few watts.
10M is a second favorite.? Its open more than closed.? The problem is everyone
is listening, no talking.? End of last cycle I got tired of hearing "10 is dead" so with a
tribander, end fed halfwave wire and qrp power [4W SSB] I worked 85 countries in
5 months.? There was TEP and Eskip enough that it included spots like MacMurdo
and the Falklands from W1 land.? Then a living got in the way... ;)
I hear its dead from many, they all answer the question, When did you call CQ there?",
they didn't.? ?If no one is talking someone has to make the first noise.? ? Generally true
most bands but generally 10 and 15 (and 17) will be daylite bands for a while and
occasional night skip.? Oh, and 6M is entering the E-skip season (least here in USA)
and EU too and that happens any time for a few minutes or hours.? The only way
to know is to be there.
Allison
|
Re: Teensy I2c on wire2 (SDA2/SCL2)
#ubitx
Those pullups to 3.3v for SDA,SCL are already on the Raduino board so the Nano can talk to the si5351. All that is needed is to remove the 5v pullups from your i2c display. If it's an LCD display with backpack, see this post for more info: ? ? /g/BITX20/message/39966? Jerry
On Thu, May 31, 2018 at 09:31 pm, AA9GG wrote:
Haven't tried it, but remember that the si part is running at 3v and the display is at 5v.?? Therfore you will need to use 4.7k resistors to pull the SDA and SCL lines to 3v (NOT 5v).? Make sure you remove the pull-ups off of the lcd if they are present and just use the ones in the si circuit.
?
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Amazon doesn't do PayPal....... -- Paul Mateer, AA9GG
Elan Engineering Corp.
NAQCC 3123, SKCC 4628
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Re: Teensy I2c on wire2 (SDA2/SCL2)
#ubitx
Haven't tried it, but remember that the si part is running at 3v and the display is at 5v.?? Therfore you will need to use 4.7k resistors to pull the SDA and SCL lines to 3v (NOT 5v).? Make sure you remove the pull-ups off of the lcd if they are present and just use the ones in the si circuit. -- Paul Mateer, AA9GG
Elan Engineering Corp.
NAQCC 3123, SKCC 4628
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Re: What does zero-beat sound like?
#ubitx
If there's still a digital pin free on the Nano into a counter-timer, that could be used as the frequency counter
But I grew up on bad receivers that were good at letting me hear both sidebands and zero-beat.
Hearing zero-beat and then not having it immediately wander off a few hundred hertz fills me with joy.
?
toggle quoted message
Show quoted text
On Thu, May 31, 2018 at 03:14 pm, Ralph Mowery wrote:
The tuning is close for those that do not have test equipment.
?
What I usually do is set a sideband rig readout either 1000 hz higher or lower than the desired frequency depending on the sideband .? Then feed it a signal that is on frequency and put a counter on the speaker.? When the speaker output is 1000 hz, then the receiver is set.? No guessing about trying to hear the zero beat below around 100 hz or less.
?
While I bought used test equipment and do not have that much in it, here I set with a $ 120 rig and use about? $ 5000 worth of test equipment to set it with.
Would have been much less expensive to buy a transceiver already to go..But I would not have nearly as much fun working with this little rig.?
?
As I see it, Mr. Farhan did an excellent job of making an inexpensive rig for those that can not afford a more expensive rig, and for those of us that like to tinker with items that we do not have the skill or way to make the circuit boards and such from scratch.?
+
de ku4pt
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Re: What does zero-beat sound like?
#ubitx
Ralph, This is how many people suggest doing the ARRL frequency measurement test. tim ab0wr On Thu, 31 May 2018 18:14:42 -0400 "Ralph Mowery" <rmowery42@...> wrote: The tuning is close for those that do not have test equipment.
What I usually do is set a sideband rig readout either 1000 hz higher
or lower than the desired frequency depending on the sideband . Then
feed it a signal that is on frequency and put a counter on the
speaker. When the speaker output is 1000 hz, then the receiver is
set. No guessing about trying to hear the zero beat below around 100
hz or less.
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Re: Need Clarification on uBitx v. 4 Schematic
JackAl has both IF and audio AGC. This photo:
was taken at the FDIM conference. If you look closely, the graph above the speech compressor shot (sort of column 3, row 2, going from left to right, top to bottom) shows the rolloff for the AGC. Unfortunately, Al's got the JPG's for the plots. Put it this way: It's pretty good.
Jack, W8TEE
On Thursday, May 31, 2018, 9:45:14 PM EDT, Michael Shreeve <shreevester@...> wrote:
Its looking like the 2n7000 mosfet board completely shuts off the tx to clear the pop. But, I cannot find a modification that would account for Ashhar's description of a AGC which has something to do with the IF. The little board isn't removed from the circuit and is in operation when strong signals audio go through, so perhaps it limits them ? Or perhaps the schematic at doesn't include the AGC ??
On Thu, May 31, 2018 at 3:51 PM, Michael Shreeve <shreevester@...> wrote: Oh, and the pop eliminator looks like a 2n7000 board controlled by the T-R line. On a separate little board, much more simple than others I've seen. Five components total includes the mosfet. And a new test point TP1 ! And new jumpers where the little board connects. I haven't put the two 10X17 sheets side by side yet , and these still stand out.? A 1uf with a diode and resistor give the mute timing just enough time.?
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Nextion LCD must conform to the communication protocol specified. I applied the protocol specified in Nextion LCD and connected it with uBITX
Ian
Ian, correct me if I am wrong, is saying use the serial port to send FT-817 commands to control the uBITX.
rOn
On May 31, 2018 at 5:09 PM Joe <joeman2116@...> wrote:
This looks great to see progress for ubitx and nextion integration.
I am looking at purchasing:
Nextion Enhanced 3.2" HMI Touch display
Product Code : RB-Ite-174
Would this work ok for working with your development?
Thanks Joe VE1BWV
-- Best 73 KD8CEC / Ph.D ian lee kd8cec@...
(my blog)
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Re: boosting the power on 28 MHz
#ubitx
6M has been the magic band for many decades before me.? ;)
As a hard core VHF/UHF op I spend a lot of time on 6M.? How hard core?
My first three HB radios were for 6, they remain in service since.? 6M is
not high power, its good antennas, yagis and they are not hard to build.
The entry level is horizontal 3 elements on a 6ft boom and a few watts.
10M is a second favorite.? Its open more than closed.? The problem is everyone
is listening, no talking.? End of last cycle I got tired of hearing "10 is dead" so with a
tribander, end fed halfwave wire and qrp power [4W SSB] I worked 85 countries in
5 months.? There was TEP and Eskip enough that it included spots like MacMurdo
and the Falklands from W1 land.? Then a living got in the way... ;)
I hear its dead from many, they all answer the question, When did you call CQ there?",
they didn't.? ?If no one is talking someone has to make the first noise.? ? Generally true
most bands but generally 10 and 15 (and 17) will be daylite bands for a while and
occasional night skip.? Oh, and 6M is entering the E-skip season (least here in USA)
and EU too and that happens any time for a few minutes or hours.? The only way
to know is to be there.
Allison
|
Re: Need Clarification on uBitx v. 4 Schematic
Its looking like the 2n7000 mosfet board completely shuts off the tx to clear the pop. But, I cannot find a modification that would account for Ashhar's description of a AGC which has something to do with the IF. The little board isn't removed from the circuit and is in operation when strong signals audio go through, so perhaps it limits them ? Or perhaps the schematic at doesn't include the AGC ??
On Thu, May 31, 2018 at 3:51 PM, Michael Shreeve <shreevester@...> wrote: Oh, and the pop eliminator looks like a 2n7000 board controlled by the T-R line. On a separate little board, much more simple than others I've seen. Five components total includes the mosfet. And a new test point TP1 ! And new jumpers where the little board connects. I haven't put the two 10X17 sheets side by side yet , and these still stand out.? A 1uf with a diode and resistor give the mute timing just enough time.?
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Re: boosting the power on 28 MHz
#ubitx
If you want to know if 10 is open listen to CH5 and 6 on CB. All the multi KW folks use those for ¡°Skip Talking¡±. ? ?
toggle quoted message
Show quoted text
From: [email protected] [mailto:[email protected]] On Behalf Of KENT HUFFORD
Sent: Thursday, May 31, 2018 17:04
To: [email protected]
Subject: Re: [BITX20] boosting the power on 28 MHz #ubitx? Like Bob Heil said. If everybody TRANSMITTED on 10m, then you may hear someone. <sic>. ? Kent ? ? ? 
On 5/31/2018 4:53 PM, Richard Spohn wrote: It's all due to marketing!? 10 meters is called the "Magic Band".? And everybody loves magic. - Rich WB2GXM ? On 5/30/18, Bo Barry <bobarr@...> wrote: I'm constantly surprised at the interest in 10 meters. I always check 15. If its dead I go to 20. If it has anything on it I check 10 and hear nothing here in NC with a simple EFHW.. ? But 10 was a blast back in 1954!!? ?:) ? 73, Bo W4GHV since '54 ?
? ? ?
?
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Re: Heat proofing the ubitx.
Hi Lee
I have an Anet A8. About 160 dollars from gearbest.com. Had it for about 18 months and have about 2400 print hours on it. Had to replace a few things but have used it steadily.
The electronics on the printer have been flawless although I did put fans on it too. The fan on the printer motherboard is held on with zip ties. Guess it deserves a shroud.
For me the most interesting part is learning how to create 3d shapes. I use Fusion 360 for that.
I went bigger on the case using the case off of a 50 year old stereo receiver. Have room for a lot more than in the case now.?
My fan just runs continously.
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Allard PE1NWL
AA9GG
Michael Shreeve
_Dave_ AD0B