Re: add yourself to the new BITX operators map
Both good points Craig.? A few general notes to the group: As to needing to sign in, I have the editing permissions as open as possible.? If anyone wants on the map and can not do it for any reason email me at KD9CYF@... with add to map in the subject or reply to this topic with your call and address and I will add you manually. I like the idea of differentiating stations with colors or different icons or both.? What do you guys like?? Craig has some good one already. I am going to try to keep the map clean and consistent so I may edit some of the entries manually if I can figure out what the operator's intention was.? However, there are a few points already that have no call or address and are therefore useless to the group.? I am going to delete those.? Again, if you need help or want me to add you manually just say so. Thanks to everyone that has already added themselves.? I hope this turns into something useful. #map
|
Re: add yourself to the new BITX operators map
Great idea Doug,?
1. need to sign in to Google first to add address.
2. to use as a differentiator of stations¡.some ideas
use the color feature to show something different about your station? Stock BitX40 vs Mods vs 12v or 24v on PA, ?Region, Lic Class (make a difference on contact freq), or anything else that would be nice to know about each other. ?
also, the identifier line could include First Name, or 1 or two other unique ID¡¯s¡.
thinking to make it a pictorial database
Craig KM4YEC
toggle quoted message
Show quoted text
Seeing the topics for regional operator lists got me thinking.? If words are good, pictures are better.? I set up a google map that you can add yourself too to help visualize where everyone is located.? I was going to add people that responded to the other topics but out of respect for privacy (and my laziness) this should be entirely opt in only.? The map is only accessible with the link below.? The interface is reasonably intuitive but I will do my best to explain how to add yourself.
go to type your address in the search bar on the top of the map (the box with the magnifying glass to the right)
hit enter or click the magnifying glass
verify the location displayed
click add to map at the bottom of the box that pops up
now click the pencil/edit icon at the bottom right of the box
change the highlighted address to your call sign and click save at the bottom left of the box
you can also add more information to your spot if you choose to
bookmark the link and check back as more people add themselves
I am making this sound much more complicated than it is.? If anyone can describe the process better please do.
|
Re: Calling all Midwesterners.
John,
I did just that with mine. ?I added a jack on the back of the rig to plug in a 24-volt supply when I¡¯m operating at home.? The 24 volt connection pulls in a relay that moves the PA power from the 12 volt bus to the 24 volt input.? I¡¯m getting
over 10 watts out on voice peaks, and you are right about the heat dissipation.? I¡¯ll be adding a bigger heat sink to the IRF520 this weekend.
Hoping to connect with more BitX¡¯ers on Sunday night !
Kevin N8DLP
This email is intended only for the use of the party to which it is addressed and may contain information that is privileged, confidential, or protected by law. If you are not the intended recipient you are hereby notified that any dissemination, copying or
distribution of the email or its contents is strictly prohibited. If you have received this message in error, please notify us immediately, by replying to the message and deleting it from your computer. WARNING: Internet communications are not assured to be
secure or clear of inaccuracies as information could be intercepted, corrupted, lost, destroyed, arrive late or incomplete, or contain viruses. Therefore, we do not accept responsibility for any errors or omissions that are present in this email, or any attachment,
that have arisen as a result of e-mail transmission.
|
add yourself to the new BITX operators map
Seeing the topics for regional operator lists got me thinking.? If words are good, pictures are better.? I set up a google map that you can add yourself too to help visualize where everyone is located.? I was going to add people that responded to the other topics but out of respect for privacy (and my laziness) this should be entirely opt in only.? The map is only accessible with the link below.? The interface is reasonably intuitive but I will do my best to explain how to add yourself.
go to type your address in the search bar on the top of the map (the box with the magnifying glass to the right)
hit enter or click the magnifying glass
verify the location displayed
click add to map at the bottom of the box that pops up
now click the pencil/edit icon at the bottom right of the box
change the highlighted address to your call sign and click save at the bottom left of the box
you can also add more information to your spot if you choose to
bookmark the link and check back as more people add themselves
I am making this sound much more complicated than it is.? If anyone can describe the process better please do.
|
Re: Calling all Midwesterners.
For Nick, and Sean. Number one thing I can suggest is push 24 Volts in to the final. It's very easy to add in another supply jack for powering the final separately.? Double power in = triple power out, greatly improves your QRP signal strength. And you don't have to do the alignment process again. It's not going to change that much. Be sure you have enough heat dissipation. Combine this with a high antenna and you could topple W1LY as QRP king of the mountain.
My problem is they hear me, but I can't hear them. I wish all BITX'ers would include 24 Volts as a switch in option for when it's needed. I used the extra hook up wires with one set on each DC Jack, and just open the box and swap connectors on the board. You'll need a higher voltage supply and a buck converter to step it down to 24V.?
Sean, I think you are one of the closest stations to me and we should be able to hear each other even with 12 Volts barefoot.
|
Re: Making PSK31 Contacts
Clark thanks for the advice. I kinda already did that with the original heatsink. I modified it to fit flat to the chassis and have the transistor mounting screw thru the chassis and into the heatsink. I was surprised that the heatsink got warm as well. I expected the chassis to absorb most of the heat. If it gets too warm my thought was to replace it with a microprocessor heatsink and small fan 
|
Re: Other 2 line displays
Have found matching knobs for audio control etc, and a similar styled one for tuning, but still looking for other displays.
Phil - G7BZD
On Sun, May 28, 2017 at 4:20 PM, philip yates <phil@...> wrote: What spec am I looking for regarding the display, have seen a red on a black background somewhere.
But do not really know anything about them.?
Must be 2 line as the menu, comes up on the lower line, and would rather just a plug in replacement.
On the search for hardware, seems to be a bit of a short supply, mainly knobs. Need a decent sized knob for the tuning control.
Just trying to work out the front panel layout, and either front or back may have a USB socket for updating the Raduino.
Phil - G7BZD
|
Re: Calling all Midwesterners.
KB0OVD, Sean, East-Central Missouri, 60 miles West of St. Louis. Using a multi-band trap dipole in my attic.? I have yet to make a contact.? Tried calling CQ a few times and have gotten no response. I keep missing the Sunday night QSO sessions but I'll see if I can try it this Sunday.
|
Re: My built Bitx40 raduino for sale
hi
sorry i do not wish to buy cos i already have one but can you tell about the enclosure.? where did you get it from, how much was it and what are its dimensions
a picture would help and it my also help your sale
73 de terry gm4dso
|
Re: Calling West Coast BITX operators
|
Re: Calling all Midwesterners.
AC9LF, Nick, S.E. Wisconsin.?
Haven't been able to make any contacts yet. Tried with a home brew end fed wire with home brew L-match. Also tried with a home brew magnetic loop. No one ever comes back. Seems like everyone I try to call is running something like 800 watts and may have attenuators on. :( Same thing with calling CQ.
Meter shows power and no reflected when tuned. I may try a dipole next but I do not have the space for it.
|
Re: The $19 DIY DSP audio filter
Very cool! ?
Keep us posted on what you come up with.
Jerry, KE7ER
toggle quoted message
Show quoted text
On Fri, Jun 9, 2017 at 08:06 am, <bruce@...> wrote:
The processing power needed for controlling the display, Si5351, encoder, AGC, CAT, etc. is minimal and that part of the code is pretty simple anyhow. ?Things get interesting when you move into audio processing, support for RTTY/PSK31, and CW decode. ?The extra juice from the Cortex M4 is helpful. ?The thing that got me going on the Teensy 3.5 upgrade was JT65 decode, which involves some more complicated algorithms and can benefit from the faster clock and the added memory. ?I've not got that working yet, but I think it will work eventually ...
?
|
Re: The $19 DIY DSP audio filter
Adding a word of praise for the PJRC Teensy boards. ?I bought my BITX40 prior to the Radiuno so I did my own VFO/controls. ?Originally I used the Teensy 3.2 because of the excellent audio/DSP support. ?I'm in the process of moving up to the Teensy 3.5 (additional $5.00 USD) because it has a faster processor and a second DAC.?
The processing power needed for controlling the display, Si5351, encoder, AGC, CAT, etc. is minimal and that part of the code is pretty simple anyhow. ?Things get interesting when you move into audio processing, support for RTTY/PSK31, and CW decode. ?The extra juice from the Cortex M4 is helpful. ?The thing that got me going on the Teensy 3.5 upgrade was JT65 decode, which involves some more complicated algorithms and can benefit from the faster clock and the added memory. ?I've not got that working yet, but I think it will work eventually ...
The Teensy parts are more expensive than the Arduino, but you end up with a more portable PC-less solution when you're done.
73s,
Bruce KC1FSZ?
|
Re: Calling all Midwesterners.
That's good, but it will still be a while before I get all the mods done. Dennis is redoing the Beta boards and I'll probably have the B40 in pieces for a while yet. Still...looking forward to getting it on the air!
Jack, W8TEE
From: John Smith via Groups.Io <johnlinux77@...>
To: [email protected]
Sent: Friday, June 9, 2017 1:21 AM
Subject: Re: [BITX20] Calling all Midwesterners.
It just came to me. it's something like "CQ Texas BITX40, or whatever state you want. Just like specific DX countries. Sometimes you gotta ask the question out loud to someone to figure it out for yourself.?
Right, next Bitx40 QSO night I am gonna try calling the states around me, and some of this list we have so far. Watch out Jack, I noticed you were on that list too. I'm calling for ya pal. Hi,Hi.
|
I managed to get a set of folding feet from an old Yaesu VR5000, ideal and its the only part of the case finished as yet apart from rear sockets and heatsink are mounted.
Phil - G7BZD
On Fri, Jun 9, 2017 at 1:24 PM, <jim@...> wrote: Or if you have access to a 3d printer....;.
|
Re: Making PSK31 Contacts
I would try to improve the heatsinking. The case provides a lot of area to dissipate the heat but it has to funnel all that heat through fairly thin sheet metal. I would attach a largish finned heatsink on the outside. This will give it a thicker chunk of metal to conduct the heat away and much more surface area, close to the source, to dissipate the heat. It needs to have good metal to metal contact (with a thin layer of thermal grease between) with the metal case. Ideally the PA transistor would be attached directly to the heatsink through a hole in the case.
Clark Martin
KK6ISP
toggle quoted message
Show quoted text
On Jun 8, 2017, at 8:25 PM, Jeff <jeff@...> wrote:
Ok finally got the Vox board adjusted and hooked up the laptop power supply. I have about 19v on the PA and am getting about 9-10 watts out. Plugged in the computer this evening and was able to make several contacts on PSK31. Seems to be working fine my only concern is the PA is getting pretty warm even though it is heatsinked to the rear case. I will have to watch it closely and see what happens.A fan may be in order. Thanks to all for the guidance.
|
It appears to be the same part as the 1n4148w diodes used in the diode ring mixer, in an SOD-123 package: ? However, if you reversed the power supply leads into your Bitx40, you could have blown just about all of the semiconductors on the board. You might wind up having to buy a new Bitx40, use this one for spare parts. Another issue is giving a few volts over 12v, since Q13 and R141 are already a bit beyond their maximum dissipation limits. Adding an LM2940T-12 as per ?? /g/BITX20/message/26492
would protect from both reversed supply leads and voltages beyond 12v. ?It also limits current to something manageable. Perhaps something like this should be included in the board layout if it rolls (or in the uBitx). Jerry, KE7ER
On Fri, Jun 9, 2017 at 03:55 am, <mattcarus@...> wrote:
Powered up my BITX40 last night and some smoke escaped from D6 :( - I assume it'll need replacing which is fine, can anyone tell me what package size it is?
?
|
Or if you have access to a 3d printer....;.
https://www.thingiverse.com/thing:1012950
|
See if this works, I found some hard to parts and even a complete front panel for a damaged icom rig!
See under new parts for June - you need only the plastic bits and you can bend a brazing rod to fit your box size.
Cheers
Raj
toggle quoted message
Show quoted text
At 09-06-2017, you wrote: i m looking for a nice way to tilt on my radio boxes in order to make it more confortable to use.
maybe a bracket or folding legs to put under the box
Any hint? I have tried a lot of different searches on ebay and amazon. No joy
|
Re: Dhl customs cost to the usa
I was robbed 41 eur by DHL in OH.
They charge 20eur, if you handle the customs declaration by yourself, and 24 eur, if you decide let them handle it.
Makes no sense.
Timo OH7LMQ
|
Craig Thibodeaux
Jeff
Raj vu2zap