Also received mine, will be moving the pot to the other side of the PCB as well. Think I would prefer a blue display as well, will then match my QRP Labs U3.
Now to find a case to put it all in. Jury rigged on bench at the moment.
Phil G7BZD
On Tue, Jan 24, 2017 at 6:20 PM, Joel Caulkins <caulktel@...> wrote: I received my Raduino today, Yippee! The two things I did first was to change the green display to a blue one, and move the contrast pot to the back of the board so I can actually adjust it while looking at the display. It works perfect and is only off frequency by about 200Hz which I will calibrate once it's in the case. Well worth the additional $14. Joel? KB6QVI
On Jan 24, 2017, at 9:57 AM, kq2q2000 <kq2q@...> wrote:
thank you Jared. Will do! Bob? KQ2Q
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If I am correct phone qrp 40m is 7.090 let¡¯s use this for Europe.
?
Ron ¨C PA3FAT
?
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Van: [email protected] [mailto:[email protected]]
Namens Jim Schliestett
Verzonden: 24 January, 2017 19:05
Aan: [email protected]
Onderwerp: Re: [BITX20] BitX40 Frequency?
?
You are right Jerry, something below 7200 may be better but we can try 7280
?
Jim, K4AEK
?
From:
[email protected] [mailto:[email protected]]
On Behalf Of W0PWE
Sent: Tuesday, January 24, 2017 12:33 PM
To: [email protected]
Subject: Re: [BITX20] BitX40 Frequency?
?
A BitX calling frequency is a great idea. ?I find the upper end of 40M to be a little crowded with AM SW broadcast stations but I will give 7.280 a try this evening.
Congrats on the BitX 40 DX!
Jerry, W0PWE
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Re: (Raduino) A Duhhh.... Moment
The 50 turn toroid is part of the "stock" distribution for folks that purchase a BITX40 board and a Raduino DDS. ?On ?new shipments, the ?50 turn toroid is not installed on the borad, but can be soldered in by the user if they want to try the on board VFO.
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Re: ending raduino upgrades
Send an email to hfsignals at gmail dot com? stating that you would like to buy a Raduino and why. The were selling them at a loss to encourage upgrades, so likely won't sell you two if you only bought one Bitx40.
And may not sell you any at all, as you may be beyond their deadline. But plenty of discussion in the last few weeks of alternative Si5351 PLL breakout boards and DDS vfo kits.
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I received my Raduino today, Yippee! The two things I did first was to change the green display to a blue one, and move the contrast pot to the back of the board so I can actually adjust it while looking at the display. It works perfect and is only off frequency by about 200Hz which I will calibrate once it's in the case. Well worth the additional $14. Joel? KB6QVI
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Show quoted text
On Jan 24, 2017, at 9:57 AM, kq2q2000 < kq2q@...> wrote: thank you Jared. Will do! Bob? KQ2Q
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Re: ending raduino upgrades
The URL:
works for me.
Jack, W8TEE
From: kq2q2000 <kq2q@...>
To: [email protected]
Sent: Tuesday, January 24, 2017 1:14 PM
Subject: Re: [BITX20] ending raduino upgrades
Hello, I got a Bitx40 in late December. I would like to order (2) two Raduino boards via PayPal. I tried the email address and it was not complete. Please advise!
Thanks Bob? KQ2Q???? kq2q? AT? Windstream? DOT? Net Danielsville, GA?? 30633? USA
|
Re: ending raduino upgrades
Hello, I got a Bitx40 in late December. I would like to order (2) two Raduino boards via PayPal. I tried the email address and it was not complete. Please advise!
Thanks Bob? KQ2Q???? kq2q? AT? Windstream? DOT? Net Danielsville, GA?? 30633? USA
|
You are right Jerry, something below 7200 may be better but we can try 7280 ? Jim, K4AEK ?
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Show quoted text
From: [email protected] [mailto:[email protected]] On Behalf Of W0PWE
Sent: Tuesday, January 24, 2017 12:33 PM
To: [email protected]
Subject: Re: [BITX20] BitX40 Frequency? ? A BitX calling frequency is a great idea. ?I find the upper end of 40M to be a little crowded with AM SW broadcast stations but I will give 7.280 a try this evening. Congrats on the BitX 40 DX! Jerry, W0PWE
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Will give 7280 a try plus or minus a couple kHz. I¡¯ll be monitoring. ?
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From: [email protected] [mailto:[email protected]] On Behalf Of Jeff Thomas
Sent: Tuesday, January 24, 2017 11:16 AM
To: [email protected]
Subject: Re: [BITX20] BitX40 Frequency?? I did not see an answer so I will suggest 7.28 mhz and try for 6:00 PM eastern. ? On 1/23/2017 10:32 PM, Jim Schliestett wrote: Is there a frequency on 40M where BitX folks hang out? I would like to make some BitX40 to BitX40 contacts. By the way, I worked 4M1K and ZS6CCY with my BitX40 running 5W from Georgia during the NAQP contest last weekend. It works! ? Jim, K4AEK
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thank you Jared. Will do! Bob? KQ2Q
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A BitX calling frequency is a great idea. ?I find the upper end of 40M to be a little crowded with AM SW broadcast stations but I will give 7.280 a try this evening. Congrats on the BitX 40 DX! Jerry, W0PWE
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I use the battery from my Black and Decker drill.? 18 v. to a 12 v. regulator built into an Altoids tin? Works great for all my 12 volt needs.
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Re: power for qrp-labs dds
You can use a 7809 or 7808 before the 7805 to spread the dissipation in each regulator. Lawrence
|
Re: power for qrp-labs dds
Frank
Building one today - thanks for your help 73 Art
Sent from my iPhone
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On Jan 24, 2017, at 10:44 AM, Frank Dinger,GM0CSZ < gm0csz@...> wrote: You don't need a buck converter just a 7805 regulator or its lower current sibling 78L05 with input 12V ,output 5V with both up- and down-stream capacitors (electrolytic and ceramic)? to prevent possible oscillation.
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quote ===== This looks like a good portable power supply if you need more capacity 12v and 12 amp hour
On Tue, Jan 24, 2017 at 10:38 PM, Jeff Thomas <wb4sca@...> wrote: I have been using a Lipo battery that I use on my RC airplanes. it is
11.1 volt and 1.8 amp hour. I get a good 4 hours of operation with
them. the charger that I use works on 12 volt so it could be set up to
recharge with a solar panel.
I also have a 14.8 volt battery that i will try later. The chargers
monitor each cell and charges them individually and stops charging when
it is 100%
This looks like a good portable power supply if you meed more capacity 12v and 12 amp hour
I got mi BITX40 working a week ago and have been pleased with what 6 watts will do. Jeff WB4SCA, Jacksonville, Fla
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I did not see an answer so I will suggest 7.28 mhz and try for
6:00 PM eastern.
On 1/23/2017 10:32 PM, Jim Schliestett
wrote:
toggle quoted message
Show quoted text
Is there a
frequency on 40M where BitX folks hang out? I would like to
make some BitX40 to BitX40 contacts. By the way, I worked
4M1K and ZS6CCY with my BitX40 running 5W from Georgia
during the NAQP contest last weekend. It works!
?
Jim, K4AEK
|
Good to be skeptical. Low end lithium ion batteries tend to get sold with inflated specs. ?Sometimes the datasheet simply lies, lots of 3000 mah 18650 cells out there that might give half that if you actually test it. ? Here's a forum discussion of a similar product: ? ? "Unfortunately, this smells a lot like the other Chinese power packs that have been discussed here many, many times in the past. The advertised capacity of 12,000 mAH is too high for the energy capability given the physical size quoted. This device likely contains 8 AA size cells. These are usually rated at 1500 to 2000 mAH each at 3.6 to 3.7 volts. The 12,000 mAH number comes from summing up all the individual cells in the unit. That is typical for the way the vendors advertise these sort of devices. So, you may really get 12,000 mAH but that is at 3.7 volts rather than the rated voltage at the output terminals." On this KKmoon device, the tomtom webpage explicitly says 44.4 watt-hours. ?If it was really 12000mah at 12v, that would be 144 watt-hours. ?Also says it comes with a 1000ma charger that can charge it in 4 hours, which suggests it's at best a 4000mah battery at 12v. ? On the other hand, it appears to get positive reviews with regard to starting a car. ?So it likely does give a couple hundred amps if you ask it, which is 2400 watts. ?Even if it only gives 100 amps for 30 seconds, that's enough to send out a real blowtorch of a signal from a backpack. ?Which I find interesting, a few friends monitoring on frequency for my PSK31 signal would be able to see my message of ?"Help, send Lassie".? If you get one, put a 10 ohm 20 watt resistor of some sort (a hundred feet of magnet wire?) on it and let us know how long it takes to discharge. ?Then put up reviews on tomtom and amazon explaining the lie to the masses.
Other concerns: ?How fast does it self discharge? ?How many discharge cycles? ?Does it ever explode? ?
At $28.99, it's probably worth getting. ?But it ain't 12000mah at 12v.
Jerry, KE7ER
On Tue, Jan 24, 2017 at 06:54 am, Jack Purdum wrote:
This looks very interesting:
http://www.tomtop.com/batteries-1426/p-k4267us.html?aid=TTEDM170124&utm_source=EDM&utm_medium=EDM&utm_content=TT-EDM-TTEDM170124
I've read the ad several times and it appears that the battery pack is included. For the price, is that correct or am I reading it wrong?
?
|
Re: power for qrp-labs dds
You don't need a buck converter just a 7805 regulator or its lower current sibling 78L05 with input 12V ,output 5V with both up- and down-stream capacitors (electrolytic and ceramic)? to prevent possible oscillation.
On Tue, Jan 24, 2017 at 8:15 AM, Art Olson via Groups.Io <olsonaj6927@...> wrote: the Bitx40 uses 12v natively however the qrp-labs DDs vfo requires 5 volts. I have tried several buck converters but there is a lot of hashing (noisy) when the converter is powered on. Anyone have a suggestion as to anything I might try. If I use an external 5 volt wall wart then the problem (noise)?goes away. I don't want to have a 12 v power connection and have to run a wall wart also. 73 art
|
Jeff:
This looks very interesting:
http://www.tomtop.com/batteries-1426/p-k4267us.html?aid=TTEDM170124&utm_source=EDM&utm_medium=EDM&utm_content=TT-EDM-TTEDM170124
I've read the ad several times and it appears that the battery pack is included. For the price, is that correct or am I reading it wrong?
Jack, W8TEE
From: Jeff Thomas <wb4sca@...>
To: [email protected]
Sent: Tuesday, January 24, 2017 9:38 AM
Subject: [BITX20] Battery choices
I have been using a Lipo battery that I use on my RC airplanes. it is
11.1 volt and 1.8 amp hour. I get a good 4 hours of operation with
them. the charger that I use works on 12 volt so it could be set up to
recharge with a solar panel.
http://www.headsuphobby.com/111v-1800mah-30C-DBY-Power-Lipo-Battery-with-T-Plug_p_1038.html
I also have a 14.8 volt battery that i will try later. The chargers
monitor each cell and charges them individually and stops charging when
it is 100%
http://www.tomtop.com/rc-quadcopter-1192/p-rm7482us.html
This looks like a good portable power supply if you meed more capacity 12v and 12 amp hour
http://www.tomtop.com/batteries-1426/p-k4267us.html?aid=TTEDM170124&utm_source=EDM&utm_medium=EDM&utm_content=TT-EDM-TTEDM170124 I got mi BITX40 working a week ago and have been pleased with what 6 watts will do. Jeff WB4SCA, Jacksonville, Fla
|
I have been using a Lipo battery that I use on my RC airplanes. it is
11.1 volt and 1.8 amp hour. I get a good 4 hours of operation with
them. the charger that I use works on 12 volt so it could be set up to
recharge with a solar panel.
http://www.headsuphobby.com/111v-1800mah-30C-DBY-Power-Lipo-Battery-with-T-Plug_p_1038.html
I also have a 14.8 volt battery that i will try later. The chargers
monitor each cell and charges them individually and stops charging when
it is 100%
http://www.tomtop.com/rc-quadcopter-1192/p-rm7482us.html
This looks like a good portable power supply if you meed more capacity 12v and 12 amp hour
http://www.tomtop.com/batteries-1426/p-k4267us.html?aid=TTEDM170124&utm_source=EDM&utm_medium=EDM&utm_content=TT-EDM-TTEDM170124 I got mi BITX40 working a week ago and have been pleased with what 6 watts will do. Jeff WB4SCA, Jacksonville, Fla
|
Tom Clifton
Joel Caulkins/N6ALT