Re: Order - How to find details
I ordered my BITX40 on Dec. 26, received notice that it was shipped on Jan. 02, and received it here in Israel on Jan. 27, exactly four weeks after the order.
Now to get it working on the bench, and then into a suitable enclosure. BTW, it arrived in perfect condition - no damage.
73,
Shlomo 4X4LF
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After a couple of searches and some reading from the archives, I got a thought. ?Normally that's a dangerous thing, but I'll toss it out for the real experts just in case. hi hi Would it be possible (or useful?) to add another relay and a slight delay so that when the PTT is pressed, the RX circuit is broken and there's a pause before the TX circuit is made? I'm not concerned about the speaker noise, but rather the carrier pulse when PTT is pressed. ?Maybe giving the caps a couple of miliseconds to discharge when changing states would fix all the symptoms? ?Or maybe not? Thanks, Andy KG5RKP
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Re: Posts not showing up in forum
They are now showing
up, Jason. From memory, the first post by a new member is
always moderated, so it wont appear until that has occurred.
That said, if you tried to make several posts before the
moderation had occurred, I guess they would also be slow to
appear.
On 26/01/2017 9:56 PM, Jason N3YUG
wrote:
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Hello all, I have been reading a good amount in the BITX forum,
and tried to reply with a few comments, but nothing shows up.
SO I am going to try starting a new topic. Any ideas on what is
going on?
Thanks and sorry to clutter the forum with this.
Jason
N3YUG
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I am deeply saddened by all the negative, and hateful comments. I appreciate What ?Farhan is doing. I like the product as a whole. But the community kept asking for more clarification of the problem and it escalated out of control. And as for the technical, ???Joel Caulkins?pointed out an error about the brown wire for calibration actually being the red one. As per the schematic. This is a helpful comment.
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Re: Info a out buying BITX40
Sara
On your first
question, once you have a Paypal account, Paypal knows your
shipping address and will use that as the default, although
you have the opportunity to change that address for every
order. You can also send the seller a message when completing
the Paypal transaction.
On your second
question, HFsigs will send you an email once your order is on
the way via India Post. They will also give you an India Post
tracking number.
The price declared
for customs purposes was the purchase price, USD $59, in my
case.
73
Bill, VK7MX
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Hi
all,
I want
to buy a Bitx40.
I live
in Italy and i have seen that the site offers a direct check-out
button for PayPal.?
There
are no other way to insert address for expedition or other
datas.?
How do
you manage the sales? Do you communicate a tracking number or
other info? (For example infos about the expedition date,
carrier, etc..)
What
is the price indicated in the package for the customs?
Waiting
for a feedback.
Thanks
a lot!
Kinds
Sara
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Re: Low power, RV1 unresponsive
Thank you. The current at the PA input does not change, the Voltage on the gate changes with VR1 change. ?This is the DC voltage. ?Is this correct? Thank you again for the help. Chuck/AC7QN
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Finally, a decent and helpful comment. . Thank you.
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Re: My BITX40 On The Air Experience
I have another enclosure to use when I'm done tinkering.?
Randy
On Thu, Jan 26, 2017 at 11:42 AM JP McGinley < j.p.mcg@...> wrote: Randy, Looks Great. Proves that anything can be used to house these BITX in or On.? Can¡¯t wait for the video ? From: [email protected] [mailto:[email protected]] On Behalf Of Randy Hall
Sent: Thursday, January 26, 2017 10:59 AM
To: [email protected]
Subject: [BITX20] My BITX40 On The Air Experience ? Hi With so many technical messages flowing on the list I thought I would describe my BITX40 experience. I now have it put together and operating. My BITX worked the?first time I turned it on. No problems. I finished up the wiring Saturday afternoon. I was tuning around the band, and it sounded like a contest was in full swing. Working QRP during a contest can be a challenge. It was the North American QSO party. One of the nice things about this contest is that 100 watts is pretty much the power limit. This helps our QRP signals have a chance on the band. Being a QRP station during a contest means, you will be giving your call our many times. Many repeats on callsign and exchange. But, the other station will usually work with you as he wants the point. I tuned around for looking for the strong stations to contact. Over a couple of hours I worked: K0IP John ID W1RH Bob CA K7LVJ John WA N7MZ John WA K0SN Tom MT K9CT Craig IL WN6K Paul CA I was really amazed that I worked all these stations from this little board sitting on my bench. Using 13.6 V DC I was getting about 4.5 watts out, as shown on my LP-100A meter. My antenna is a PAR end fed quad band 40/20/15/10 at about 15/20 feet. My location is Gold Beach Or CN72. The Raduino?tuning kind of drove me crazy. I would be tuning for a station. I would not know that I was reaching the end of the pot, and it would take off tuning automatically. I really had to watch the display to see where I was so that I could tune back the other direction to try and find the station again. I understand that this is the normal operation.I may try tweaking the sketch for the frequency change amount and speed. After all, experimenting is what the BITX is all about. I should have a video of a bit of the wiring and operating the radio in the contest next week, Feb 1, on Ham Nation. And then on my YouTube channel. Farhan, thanks for the hours of fun. Have fun and be radio active, Randy, K7AGE ?
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Re: My BITX40 On The Air Experience
Randy, Looks Great. Proves that anything can be used to house these BITX in or On.? Can¡¯t wait for the video ?
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Show quoted text
From: [email protected] [mailto:[email protected]] On Behalf Of Randy Hall
Sent: Thursday, January 26, 2017 10:59 AM
To: [email protected]
Subject: [BITX20] My BITX40 On The Air Experience ? Hi With so many technical messages flowing on the list I thought I would describe my BITX40 experience. I now have it put together and operating. My BITX worked the?first time I turned it on. No problems. I finished up the wiring Saturday afternoon. I was tuning around the band, and it sounded like a contest was in full swing. Working QRP during a contest can be a challenge. It was the North American QSO party. One of the nice things about this contest is that 100 watts is pretty much the power limit. This helps our QRP signals have a chance on the band. Being a QRP station during a contest means, you will be giving your call our many times. Many repeats on callsign and exchange. But, the other station will usually work with you as he wants the point. I tuned around for looking for the strong stations to contact. Over a couple of hours I worked: K0IP John ID W1RH Bob CA K7LVJ John WA N7MZ John WA K0SN Tom MT K9CT Craig IL WN6K Paul CA I was really amazed that I worked all these stations from this little board sitting on my bench. Using 13.6 V DC I was getting about 4.5 watts out, as shown on my LP-100A meter. My antenna is a PAR end fed quad band 40/20/15/10 at about 15/20 feet. My location is Gold Beach Or CN72. The Raduino?tuning kind of drove me crazy. I would be tuning for a station. I would not know that I was reaching the end of the pot, and it would take off tuning automatically. I really had to watch the display to see where I was so that I could tune back the other direction to try and find the station again. I understand that this is the normal operation.I may try tweaking the sketch for the frequency change amount and speed. After all, experimenting is what the BITX is all about. I should have a video of a bit of the wiring and operating the radio in the contest next week, Feb 1, on Ham Nation. And then on my YouTube channel. Farhan, thanks for the hours of fun. Have fun and be radio active, Randy, K7AGE ?
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Re: Click on xmit keying of mike
I7IWN (Gio) supplied me with some information.
Think it is best he shares it with the community. Seems fairly simple. But would prefer the transistor setup to be closer to the last LM386 amp power supply lead. The 470uF might also be lowered, not sure why this is this value anyway.
?
Ron ¨C PA3FAT
?
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Van: [email protected] [mailto:[email protected]]
Namens Randy Hall
Verzonden: 26 January, 2017 20:17
Aan: [email protected]
Onderwerp: Re: [BITX20] Click on xmit keying of mike
?
Ron,
Farhan mentioned this during his interview with Tom, .?
He felt it was due to the cap C114 around the audio preamp Q16, holding the amp on for a bit when that rig is switched into transmit. I wouldn't be surprised that C110 might also be holding U1 on as well.
He thought about placing a transistor across the cap to discharge it when going into transmit. Drive the transistor from the xmit?voltage.
I have a very large audio transient on my rig when switching between receive and transmit. I even hear a bit of my own transmit audio for about 1 second when switching into transmit out of the speaker.
I haven't gotten around to digging out the scope yet to see what is going with C114 and C110. Maybe others have looked into this.
Everyone, please keep experimenting and reporting,
?
On Thu, Jan 26, 2017 at 10:03 AM, <r.rking41@...> wrote:
?It's not the relay. It's rally loud.
On 01/25/17, ron van doremalen<ronvandoremalen@...> wrote:
Ralph,
You mean the click of the relay¡¯s or the delay in going into tx? The first is as it is, the last is also something I need to work at. Did not time it exactly but could be half a second¡reducing the uF caps around the AF Amp might give some resolution as it
might keep the audio on to long due to extensive capacity.
Keep us posted on your experiments please.
Ron ¨C PA3FAT
?
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Re: Click on xmit keying of mike
Randy,
I hear a split second of my audio also when going into TX, I am going to look into solving this as well.
Joel KB6QVI
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Show quoted text
On Jan 26, 2017, at 11:17 AM, Randy Hall < listk7age@...> wrote: Ron,
Farhan mentioned this during his interview with Tom, .?
He felt it was due to the cap C114 around the audio preamp Q16, holding the amp on for a bit when that rig is switched into transmit. I wouldn't be surprised that C110 might also be holding U1 on as well.
He thought about placing a transistor across the cap to discharge it when going into transmit. Drive the transistor from the xmit?voltage.
I have a very large audio transient on my rig when switching between receive and transmit. I even hear a bit of my own transmit audio for about 1 second when switching into transmit out of the speaker.
I haven't gotten around to digging out the scope yet to see what is going with C114 and C110. Maybe others have looked into this.
Everyone, please keep experimenting and reporting,
Randy, K7AGE
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Re: Click on xmit keying of mike
Ron,
Farhan mentioned this during his interview with Tom, .?
He felt it was due to the cap C114 around the audio preamp Q16, holding the amp on for a bit when that rig is switched into transmit. I wouldn't be surprised that C110 might also be holding U1 on as well.
He thought about placing a transistor across the cap to discharge it when going into transmit. Drive the transistor from the xmit?voltage.
I have a very large audio transient on my rig when switching between receive and transmit. I even hear a bit of my own transmit audio for about 1 second when switching into transmit out of the speaker.
I haven't gotten around to digging out the scope yet to see what is going with C114 and C110. Maybe others have looked into this.
Everyone, please keep experimenting and reporting,
Randy, K7AGE
On Thu, Jan 26, 2017 at 10:03 AM, <r.rking41@...> wrote: ?It's not the relay. It's rally loud. ? ? On 01/25/17, ron van doremalen<ronvandoremalen@hotmail.com> wrote:? Ralph,
You mean the click of the relay¡¯s or the delay in going into tx? The first is as it is, the last is also something I need to work at. Did not time it exactly but could be half a second¡reducing the uF caps around the AF Amp might give some resolution as it might keep the audio on to long due to extensive capacity.
Keep us posted on your experiments please.
Ron ¨C PA3FAT
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Re: Calibrate Lead Confirmation
My brown wire did not put mine into calibration. I saw the post
yesterday and used the red wire and it went into calibration
properly. Both wires are inputs, so grounding either one will not
cause any problem.
I have had mine up for about 10 days now and have been well
pleased with it. You do have to work harder to get a qso bit it is
very satisfying when you get in with 6 watts.
On 1/26/2017 11:59 AM, Ion Petroianu
wrote:
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It is the red one, A2 on Arduino.
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Re: Click on xmit keying of mike
?It's not the relay. It's rally loud. ? ? On 01/25/17, ron van doremalen<ronvandoremalen@...> wrote:? Ralph,
You mean the click of the relay¡¯s or the delay in going into tx? The first is as it is, the last is also something I need to work at. Did not time it exactly but could be half a second¡reducing the uF caps around the AF Amp might give some resolution as it might keep the audio on to long due to extensive capacity.
Keep us posted on your experiments please.
Ron ¨C PA3FAT
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Re: Calibrate Lead Confirmation
It is the red one, A2 on Arduino.
On Jan 26, 2017 4:13 PM, "Jim Schliestett" < aekjrs@...> wrote: ? According to the BitX40 web pages, the brown lead of the Raduino 8 pin connector is the calibrate lead. I thought I saw a post that referred to the red lead as the calibrate lead. I want to be sure before I wire it out. Is it brown or red and which pin on the Arduino_Uno is the calibrate pin, A2? Thanks.
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Calibrate Lead Confirmation
? According to the BitX40 web pages, the brown lead of the Raduino 8 pin connector is the calibrate lead. I thought I saw a post that referred to the red lead as the calibrate lead. I want to be sure before I wire it out. Is it brown or red and which pin on the Arduino_Uno is the calibrate pin, A2? Thanks.
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Re: Dot notation for transformers
Great little video, thanks for sharing!
Roy WA0YMH
On Jan 26, 2017 6:37 AM, "Ken KM4NFQ" < km4nfq@...> wrote: Try this one: #209: Basics of Phase Dots on Transformer Windings
Published on Aug 11, 2015 This
video describes what the "phase dots" are that you often see adjacent
to windings of a transformer. It discusses how these dots are used in
certain circuits to establish a desired phase relationship between the
signals on the various windings. A couple of tips are given regarding
how to determine the phasing relationship on homebrew transformers.
Finally, measurements are made with an oscilloscope on a trifilar wound
transformer to see the phase relationship between the signals on each of
the windings with respect to the phasing dots. 73
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My BITX40 On The Air Experience
Hi With so many technical messages flowing on the list I thought I would describe my BITX40 experience. I now have it put together and operating. My BITX worked the?first time I turned it on. No problems. I finished up the wiring Saturday afternoon. I was tuning around the band, and it sounded like a contest was in full swing. Working QRP during a contest can be a challenge. It was the North American QSO party. One of the nice things about this contest is that 100 watts is pretty much the power limit. This helps our QRP signals have a chance on the band. Being a QRP station during a contest means, you will be giving your call our many times. Many repeats on callsign and exchange. But, the other station will usually work with you as he wants the point. I tuned around for looking for the strong stations to contact. Over a couple of hours I worked: K0IP John ID W1RH Bob CA K7LVJ John WA N7MZ John WA K0SN Tom MT K9CT Craig IL WN6K Paul CA I was really amazed that I worked all these stations from this little board sitting on my bench. Using 13.6 V DC I was getting about 4.5 watts out, as shown on my LP-100A meter. My antenna is a PAR end fed quad band 40/20/15/10 at about 15/20 feet. My location is Gold Beach Or CN72. The Raduino?tuning kind of drove me crazy. I would be tuning for a station. I would not know that I was reaching the end of the pot, and it would take off tuning automatically. I really had to watch the display to see where I was so that I could tune back the other direction to try and find the station again. I understand that this is the normal operation.I may try tweaking the sketch for the frequency change amount and speed. After all, experimenting is what the BITX is all about. I should have a video of a bit of the wiring and operating the radio in the contest next week, Feb 1, on Ham Nation. And then on my YouTube channel. Farhan, thanks for the hours of fun. Have fun and be radio active, Randy, K7AGE
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Re: Thoughts & Questions de W8LM - 2st POST
Thank you for taking the time to post your photos of the case you're using. Ordered a couple!?
Roy WA0YMH
On Jan 25, 2017 10:44 PM, "Lawrence Macionski via Groups.Io" <am_fm_radio= [email protected]> wrote: My BITX40 Arrived INDIA to KANSAS 20 days 1/3 to 1/23. The BITX40 was my Show & Tell at the W0VFW club meeting last night. I played W5KUB's video of his BITX40 QSO- Tennessee to South Africa. In my 1st post, I mentioned these 2 items WORTH LOOKING IN TO:
Electronic Plastic Shell Cartridge Handle Project Case Desk Instrument 200x175x70mm
$9.99 USD free shipping Ordered 1/3 arrived 1/20 China to Kansas
HM100N-Microphone-for-Mobile-Radio-F121-F221-F521-F621-F5011-F5021-F1721
Shipped was an ICOM HM-118N microphone with up-down buttons.
$9.95 USD free shipping. Ordered 1/3 arrived 1/14 China to Kansas
I have posted pictures of the PROJECT CASE with BITX40 preliminary placed inside case for sizing? and the ICOM $9.95 Microphone. I now have $79 in my project. MY PICTURE ALBUM IS----- W8LM BITX40 + RADUINO? Click on PHOTOS on the left to view 6 pictures.
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JP McGinley KA3BWP
Joel Caulkins/N6ALT
Ion Petroianu, VA3NOI
